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Sample records for distal biceps brachii

  1. FUNCTIONAL OUTCOMES AFTER DISTAL BICEPS BRACHII REPAIR: A CASE SERIES

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    Morris, Tim; Otto, Charissa; Zerella, Tanisha; Semmler, John G; Human, Taaibos; Phadnis, Joideep; Bain, Gregory I

    2016-01-01

    Objectives To investigate outcomes after surgical repair of distal biceps tendon rupture and the influence of arm dominance on isokinetic flexion and supination results. Background/Purpose While relatively uncommon, rupture of the distal biceps tendon can result in significant strength deficits, for which surgical repair is recommended. The purpose of this study was to assess patient reported functional outcomes and muscle performance following surgery. Methods A sample of 23 participants (22 males, 1 female), who had previously undergone surgical repair of the distal biceps tendon, were re-examined at a minimum of one year after surgery. Biodex isokinetic elbow flexion and supination testing was performed to assess strength (as measured by peak torque) and endurance (as measured by total work and work fatigue). The Quick Disabilities of the Arm, Shoulder and Hand (QuickDASH) and Mayo Elbow Performance Scale (MEPS) were used to assess participants' subjectively reported functional recovery. Results At a mean of 7.6 years after surgical repair, there were no differences between the repaired and uninvolved elbows in peak torque (p = 0.47) or total work (p = 0.60) for flexion or supination. There was also no difference in elbow flexion work fatigue (p = 0.22). However, there was significantly less work fatigue in supination, which was likely influenced by arm dominance, as most repairs were to the dominant arm, F(1,22)=5.67, p = 0.03. Conclusion The long-term strength of the repaired elbow was similar to the uninvolved elbow after surgery to the distal biceps tendon. Endurance of the repaired elbow was similar in flexion but greater in supination, probably influenced by arm dominance. Study design Retrospective case series Level of Evidence Level 4 PMID:27904798

  2. Unusual late sequel of ruptured distal tendon of biceps brachii mimicking a soft-tissue tumor

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    Qureshi, Sajid S.; Puri, Ajay; Agarwal, Manish [Department of Bone and Soft Tissue, Tata Memorial Hospital, E. Borges Road, Parel, Bombay (India); Merchant, N.H.; Sheth, Tanuja; Jambhekar, Nirmala [Department of Radiology, Tata Memorial Hospital, Bombay (India)

    2004-07-01

    We report a rare case of chronic, neglected rupture of the distal biceps brachii which presented with gradually increasing swelling over the left lower arm. Fine-needle aspiration cytology was reported as indicative of a soft-tissue neoplasm. Computed tomography and magnetic resonance imaging were unable to rule out a neoplastic mass. Final histopathology after surgical excision revealed a reparative process. Such a presentation of ruptured biceps brachii wherein the clinicoradiological features are misleading and suggestive of a soft-tissue tumor is quite unusual. (orig.)

  3. Supernumerary head of biceps brachii

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    Balasubramanian A

    2010-01-01

    The biceps brachii muscle and the musculocutaneous nerve of arm are frequent in their variations. A third head of biceps brachii was noted unilaterally during routine anatomy dissection. Variation in musculocutaneous nerve was also seen on the same arm. The evolutionary and functional basis of such variations are discussed. Such variations become relevant during surgical intervention of the arm, especially after humeral fracture with subsequent unusual bone displacements.

  4. Supernumerary head of biceps brachii

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    Balasubramanian A

    2010-12-01

    Full Text Available The biceps brachii muscle and the musculocutaneous nerve of arm are frequent in their variations. A third head of biceps brachii was noted unilaterally during routine anatomy dissection. Variation in musculocutaneous nerve was also seen on the same arm. The evolutionary and functional basis of such variations are discussed. Such variations become relevant during surgical intervention of the arm, especially after humeral fracture with subsequent unusual bone displacements.

  5. Avulsion of the distal tendon of the biceps brachii: reattachment to the radial tuberosity via 1-incision technique.

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    Gifuni, P; Strada, U

    2001-01-01

    Between 1995 and 1997 a total of 5 patients with injury of the distal tendon of the biceps brachii were treated by reattachment to the radial tuberosity using Henry anterior access to the elbow. The results obtained through a clinical and instrumental evaluation, and the answers to a questionnaire, were good or excellent. What was particular about our work was that we treated all of the patients by a single Henry anterior access and not a double Boyd and Anderson one, which is more commonly used. Our decision was based on the minor amount of surgical invasiveness, the simpler method of reinsertion of the tendon and the minor incidence of possible radio-ulnar synostoses. This surgical approach requires particular care with regard to possible injuries of the radial nerve, that, moreover, are easily avoidable if surgery is performed by experts, with accurate and limited preparation of the site of reattachment.

  6. ADDITIONAL TENDINOUS INSERTION OF BICEPS BRACHII: A CASE REPORT

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    Daimi S.R

    2010-03-01

    Full Text Available In view of the variable presentations of biceps brachii, a proper understanding of the anatomy of the muscle, and possible anatomical variants is a pre-requisite in managing distal biceps injury. We present the case of a 65 years old male cadaver showing variationin the insertion pattern of biceps brachii muscle unilaterally on the left arm. Although the origin of the muscle was normal, its insertion was by two separate tendons; a common and an accessory; both inserting on diverse regions of the radial tuberosity. The common tendon was formed by the tendons from short head and long head. The accessory tendon was the extension of the fleshy belly on the lateral side of the main muscle (Accessory Muscle Belly towards its lower third. Knowledge of the accessory tendon of the biceps iscrucial while performing tendon reconstruction and repair and it may also lead to unusual displacement of the bone fragment, subsequent to fracture.

  7. Distal Biceps Tendon Rupture

    Science.gov (United States)

    2010-06-01

    distal tendon . Although these findings overlap with those seen in tendinopathy , the presence of bone marrow edema at the radial tuberosity and fluid in...the bicipitoradial bursa suggests a partial tear rather than tendinopathy .3 When the distal biceps tendon tear is complete, MR imaging shows...Distal Biceps Tendon Rupture Military Medicine Radiology Corner, 2006 Radiology Corner Distal Biceps Tendon Rupture Contributors: CPT Michael

  8. Biomechanical comparison of interference screw and cortical button with screw hybrid technique for distal biceps brachii tendon repair.

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    Arianjam, Afshin; Camisa, William; Leasure, Jeremi M; Montgomery, William H

    2013-11-01

    Various fixation techniques have been described for ruptured distal biceps tendons. The authors hypothesized that no significant differences would be found between the mean failure strength, maximum strength, and stiffness of the interference screw and hybrid technique. Fourteen fresh-frozen human cadaveric elbows were prepared. Specimens were randomized to either interference screw or hybrid cortical button with screw fixation. The tendon was pulled at a rate of 4 mm/s until failure. Failure strength, maximum strength, and stiffness were measured and compared. Failure strength, maximum strength, and stiffness were 294±81.9 N, 294±82.1 N, and 64.4±40.5 N/mm, respectively, for the interference screw technique and 333±129 N, 383±121 N, and 56.2±40.5 N/mm, respectively, for the hybrid technique. No statistically significant difference existed between the screw and hybrid technique in failure strength, maximum strength, or stiffness (P>.05). The interference screws primarily failed by pullout of the screw and tendon, whereas in the hybrid technique, failure occurred with screw pullout followed by tearing of the biceps tendon. The results suggest that this hybrid technique is nearly as strong and stiff as the interference screw alone. Although the hybrid technique facilitates tensioning of the reconstructed tendon, the addition of the cortical button did not significantly improve the failure strength of the interference screw alone. Copyright 2013, SLACK Incorporated.

  9. Kinesio taping effect on biceps brachii muscle strength

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    Králová Dagmar; Novotný Jan; Řezaninová Jana

    2013-01-01

    This work aimed at presenting the idea of inventor Dr. Kenzo Kase that kinesio tape application with proximal base leads to muscle contraction facilitation and application with distal base leads to muscle contraction inhibition. Twenty male volleyball players with the dominant shoulder girdle muscle imbalance between the ages of 25 and 30 participated in this study. There were compared two techniques which were placed on biceps brachii muscle in shoulder and elbow joint extension. Isokinetic ...

  10. Repair of distal biceps brachii tendon assessed with 3-T magnetic resonance imaging and correlation with functional outcome

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    Alemann, Guillaume; Dietsch, Emmanuel [University Hospital of Besancon, Department of Musculoskeletal Imaging, Besancon (France); Gallinet, David; Obert, Laurent [University Hospital of Besancon, Department of Orthopedic Surgery, Besancon (France); Kastler, Bruno; Aubry, Sebastien [University Hospital of Besancon, Department of Musculoskeletal Imaging, Besancon (France); Franche Comte University, I4S Laboratory-EA 4268-IFR 133, Besancon (France)

    2015-05-01

    Objectives were to study the MRI appearance of the repaired distal biceps tendon (DBT), anatomically reinserted, and to search for a correlation between tendon measurements and functional results. Twenty-five patients (mean age, 49 ± 4.9 years old) who benefited from 3-T MRI follow-up of the elbow after surgical reinsertion of the DBT were retrospectively included and compared to a control group (n = 25; mean age, 48 ± 10 years old). MRI was performed during the month of clinical follow-up and on average 22 months after surgery. Delayed complications (secondary avulsion, new rupture), intratendinous osteoma, tendinous signal on T1-weighted (T1{sub w}) and fat-suppressed proton density-weighted (FS-PD{sub w}) images as well as DBT measurements were recorded. The maximum isometric elbow flexion strength (MEFS) and range of motion of the elbow were assessed. Repaired DBT demonstrated a heterogeneous but normally fibrillar structure. Its low T1{sub w} signal was less pronounced than that of normal tendons, and the FS-PD{sub W} image signal was similar to that of T1{sub w} images. MRI detected seven osteomas (Se = 53 % vs. plain radiography), one textiloma and one secondary avulsion. Repaired DBT measurements were significantly correlated with MEFS (dominant arm R2: 0.38; nondominant arm R2: 0.54); this correlation involved the insertion surface (Δ = -75.7 mm{sup 2}, p = 0.046), transverse diameter (Δ = -2.6 mm, p = 0.018), anteroposterior diameter at the level of the radial head (Δ = -3.9 mm, p = 0.001) and DBT cross-sectional area (Δ = -50.2 mm{sup 2}, p = 0.003). The quality of functional outcome after anatomical elbow rehabilitation of DBT correlates with the extent of tendinous hypertrophy during the healing process. (orig.)

  11. Closed proximal muscle rupture of the biceps brachii in wakeboarders.

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    Pascual-Garrido, Cecilia; Swanson, Britta L; Bannar, Stephen M

    2012-06-01

    Closed proximal muscle rupture of the biceps brachii is a rare injury. In this report, two cases of closed proximal muscle rupture of the biceps brachii after wakeboard traumas are described. Both patients presented with a swollen arm, weakness during flexion, and a mass in the affected forearm. Magnetic resonance imaging showed displacement of the biceps brachii into the forearm. The rupture was successfully treated with muscle removal in one case and muscle repair in the other. In patients with a wakeboard trauma and similar presentations, closed proximal muscle rupture of the biceps brachii should be suspected.

  12. Muscular coordination of biceps brachii and brachioradialis in elbow flexion with respect to hand position

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    Tim eKleiber

    2015-08-01

    Full Text Available Contribution of synergistic muscles towards specific movements over multi joint systems may change with varying position of distal or proximal joints. Purpose of this study is to reveal the relationship of muscular coordination of brachioradialis and biceps brachii during elbow flexion with respect to hand position and biomechanical advantages and disadvantages of biceps brachii. A group of 16 healthy subjects has been advised to perform 20 repetitions of single elbow flexion movements in different hand positions (pronated, neutral and supinated. With a speed of 20°/s, simultaneously sEMG of biceps brachii and brachioradialis and kinematics of the movement were recorded in a motion analysis laboratory. Normalized to MVC the sEMG amplitudes of both muscles contributing to elbow flexion movements were compared in pronated, supinated and neutral hand position over elbow joint angle. Significant differences in the contribution of brachioradialis were found in pronated hand position compared to supinated and neutral hand position while the muscular activity of biceps brachii shows no significant changes in any hand position.In conclusion, a statistical significant dependency of the inter-muscular coordination between biceps brachii and brachioradialis during elbow flexion with respect to hand position has been observed depending on a biomechanical disadvantage of biceps brachii.

  13. Rupture of the distal biceps brachii tendon: isokinetic power analysis and complications after anatomic reinsertion compared with fixation to the brachialis muscle.

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    Klonz, Andreas; Loitz, Dietmar; Wöhler, Peter; Reilmann, Heinrich

    2003-01-01

    Anatomic reattachment of the distal biceps tendon is well established but bears the risk of complications including loss of motion and nerve damage. We questioned whether nonanatomic repair by tenodesis to the brachialis muscle is able to accomplish similar results with less risk. We compared the results of anatomic repair with suture anchors (n = 6) with the results of nonanatomic repair (n = 8). Anatomic reattachment of the biceps tendon can restore full power of flexion in most cases as determined by isokinetic muscle tests (mean, 96.8% compared with the contralateral side). Nonanatomic repair also restores flexion strength to a mean of 96%. Supination power averaged 91% after anatomic repair. Supination strength after nonanatomic repair did not improve in 4 of 8 patients (42%-56% of the uninjured arm). The other 4 patients were able to produce 80% to 150% of the strength of the contralateral side. Major complications such as radioulnar synostosis or motor nerve damage were not encountered in either group. Heterotopic ossification was seen in 4 cases after reinsertion to the tuberosity. One of these patients was not satisfied with the procedure because of anterior elbow pain, even at rest. After tenodesis to the brachialis, one patient was unsatisfied because of considerable weakness. We concluded that major complications after anatomic repair are rare but must not be ignored. Tenodesis of the distal biceps tendon is a safe alternative procedure. We inform our patients about the benefits and risks of anatomic and nonanatomic repair as well as those of nonoperative treatment. The decision concerning the type of therapy best suited for an individual patient should be made on an informed consent basis.

  14. Calcifying tendinopathy of the biceps brachii in a dog.

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    Muir, P; Goldsmid, S E; Rothwell, T L; Bellenger, C R

    1992-12-01

    Calcifying tendinopathy of the biceps brachii was associated with lameness in a 1.5-year-old Rottweiler. Lameness was relieved by excision of the calcified mass and suture repair of the partially ruptured tendon. Calcifying tendinopathy is not well described in dogs, but it is a recognized clinical syndrome in human beings. The etiopathogenesis of the condition in human beings and dogs is poorly understood. Wider recognition of calcifying tendinopathy in dogs should lead to a better understanding of the disease and development of appropriate clinical treatments.

  15. A third head of the biceps brachii and coexisting fused higher origin of brachioradialis

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    Fating AS

    2011-02-01

    Full Text Available The biceps brachii is a large fusiform muscle in the flexor compartment of the arm. Brachioradialis is the most superficial muscle of the forearm. It has been reported that in 10% cases the third head of biceps brachii may arise from the supero-medial part of the brachialis and is attached to the bicipital apponeurosis. The presence of the third head is important for academic and clinical purpose. During routine dissection of a middle aged male cadaver at the Dr. PSIMS & RF, Gannavaram (INDIA; third head of biceps brachii and fused higher origin of brachioradialis were found in the left upper limb. The third head of biceps brachii arose from superomedial part of brachialis. Brachioradialis had higher additional origin beside its usual origin from proximal 2/3 of the lateral supracondylar crest of humerus. A variation in the heads of the biceps brachii muscle has already been reported to cause compression of surrounding neurovascular structures.

  16. Histochemistry profile of the biceps brachii muscle fibres of capuchin monkeys (Cebus apella, Linnaeus, 1758

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    CHF Bortoluci

    Full Text Available A general analysis of the behaviour of “Cebus” shows that when this primate moves position to feed or perform another activity, it presents different ways of locomotion. This information shows that the brachial biceps muscle of this animal is frequently used in their locomotion activities, but it should also be remembered that this muscle is also used for other development activities like hiding, searching for objects, searching out in the woods, and digging in the soil. Considering the above, it was decided to research the histoenzimologic characteristics of the brachial biceps muscle to observe whether it is better adpted to postural or phasic function. To that end, samples were taken from the superficial and deep regions, the inserts proximal (medial and lateral and distal brachial biceps six capuchin monkeys male and adult, which were subjected to the reactions of m-ATPase, NADH-Tr. Based on the results of these reactions fibres were classified as in Fast Twitch Glycolitic (FG, Fast Twitch Oxidative Glycolitic (FOG and Slow Twitc (SO. In general, the results, considering the muscle as a whole, show a trend of frequency FOG> FG> SO. The data on the frequency were studied on three superficial regions FOG=FG>SO; the deep regions of the inserts proximal FOG=FG=SO and inserting the distal FOG>FG=SO. In conclusion, the biceps brachii of the capuchin monkey is well adapted for both postural and phasic activities.

  17. Ultrasound demonstration of distal biceps tendon bifurcation: normal and abnormal findings

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    Tagliafico, Alberto; Capaccio, Enrico; Derchi, Lorenzo E.; Martinoli, Carlo [Universita di Genova, Cattedra di Radiologia ' ' R' ' - DICMI, Genoa (Italy); Michaud, Johan [University of Montreal, Department of Physiatry, Montreal, QC (Canada)

    2010-01-15

    We demonstrate the US appearance of the distal biceps tendon bifurcation in normal cadavers and volunteers and in those affected by various disease processes. Three cadaveric specimens, 30 normal volunteers, and 75 patients were evaluated by means of US. Correlative MR imaging was obtained in normal volunteers and patients. In all cases US demonstrated the distal biceps tendon shaped by two separate tendons belonging to the short and long head of the biceps brachii muscle. Four patients had a complete rupture of the distal insertion of the biceps with retraction of the muscle belly. Four patients had partial tear of the distal biceps tendon with different US appearance. In two patients the partial tear involved the short head of the biceps brachii tendon, while in the other two patients, the long head was involved. Correlative MR imaging is also presented both in normal volunteers and patients. US changed the therapeutic management in the patients with partial tears involving the LH of the biceps. This is the first report in which ultrasound considers the distal biceps tendon bifurcation in detail. Isolated tears of one of these components can be identified by US. Knowledge of the distal biceps tendon bifurcation ultrasonographic anatomy and pathology has important diagnostic and therapeutic implications. (orig.)

  18. Evaluation of the effectiveness of kinesiotaping in reducing delayed onset muscle soreness of the biceps brachii

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    Boguszewski Dariusz

    2016-07-01

    Full Text Available biological regeneration in athletes. The aim of this study was to evaluate the effectiveness of the application of lymphatic kinesiotaping in reducing delayed onset muscle soreness of biceps brachii.

  19. Four-headed biceps and triceps brachii muscles, with neurovascular variation.

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    Nayak, Soubhagya R; Soubhagya, R Nayak; Krishnamurthy, Ashwin; Ashwin, Krishnamurthy; Kumar, Madhan; Madhan, Kumar S J; Prabhu, Latha V; Latha, V Prabhu; Saralaya, Vasudha; Vasudha, Saralaya; Thomas, Merin M; Merin, M Thomas

    2008-06-01

    Anatomical variations of the biceps brachii and triceps brachii have been described by various authors, but the occurrence of four-headed biceps brachii and triceps brachii in an ipsilateral arm is rare and has not been reported before in the literature. During routine cadaveric dissection in the department of anatomy, Kasturba Medical College, Mangalore, India, various unusual variants were noted in the left arm of a cadaver of a 67-year-old man. The variants include a four-headed biceps, a four-headed triceps, communication between the musculocutaneous and median nerves, and a high origin of deep brachial artery from the axillary artery. The occurrence of these anomalies and the clinical and morphological significance are discussed.

  20. TWITCH PARAMETERS IN TRANSVERSAL AND LONGITUDINAL BICEPS BRACHII RESPONSE

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    Boštjan Šimunič

    2010-01-01

    Full Text Available Assessment of the contractile properties of skeletal muscles is continuing to be an important issue and a difficult task methodologically. Longitudinal direction of skeletal muscle contraction blurs intrinsic muscle belly contractile properties with many factors. This study evaluates and explains contractile properties such as: delay time (Td, contraction time (Tc, half relaxation time (Tr and maximal amplitude (Dm extracted from twitch transversal response and compare them with torque response. In fifteen healthy males (age 23.7 ± 3.4 years isometric twitch transversal and torque responses were simultaneously recorded during graded electrically elicited contractions in the biceps brachii muscle. The amplitude of electrical stimulation was increased in 5 mA steps from a threshold up to a maximal response. The muscles’ belly transversal response was measured by a high precision mechanical displacement sensor while elbow joint torque was calculated from force readings. Results indicate a parabolic relation between the transversal displacement and the torque Dm. A significantly shorter Tc was found in transversal response without being correlated to torque Tc (r = -0.12; > 0.05. A significant correlation was found between torque Tc and the time occurrence of the second peak in the transversal response (r = 0.83; < 0.001. Electrical stimulation amplitude dependant variation of the Tc was notably different in transversal than in torque response. Td was similar at submaximal and maximal responses but larger in transversal at just above threshold contractions. Tr has a similar linear trend in both responses, however, the magnitude and the slope are much larger in the transversal response. We could conclude that different mechanisms affect longitudinal and transversal twitch skeletal muscle deformations. Contractile properties extracted from the transversal response enable alternative insights into skeletal muscle contraction mechanics.

  1. EFFECT OF THE SHOULDER POSITION ON THE BICEPS BRACHII EMG IN DIFFERENT DUMBBELL CURLS

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    Taian M.M. Vieira

    2009-03-01

    Full Text Available Incline Dumbbell Curl (IDC and Dumbbell Preacher Curl (DPC are two variations of the standard Dumbbell Biceps Curl (DBC, generally applied to optimize biceps brachii contribution for elbow flexion by fixing shoulder at a specific angle. The aim of this study is to identify changes in the neuromuscular activity of biceps brachii long head for IDC, DPC and DBC exercises, by taking into account the changes in load moment arm and muscle length elicited by each dumbbell curl protocol. A single cycle (concentric-eccentric of DBC, IDC and DPC, was applied to 22 subjects using a submaximal load of 40% estimated from an isometric MVC test. The neuromuscular activity of biceps brachii long head was compared by further partitioning each contraction into three phases, according to individual elbow joint range of motion. Although all protocols elicited a considerable level of activation of the biceps brachii muscle (at least 50% of maximum RMS, the contribution of this muscle for elbow flexion/extension varied among exercises. The submaximal elbow flexion (concentric elicited neuro muscular activity up to 95% of the maximum RMS value during the final phase of IDC and DBC and 80% for DPC at the beginning of the movement. All exercises showed significant less muscle activity for the elbow extension (eccentric. The Incline Dumbbell Curl and the classical Dumbbell Biceps Curl resulted in similar patterns of biceps brachii activation for the whole range of motion, whereas Dumbbell Preacher Curl elicited high muscle activation only for a short range of elbow joint angle

  2. Four-headed biceps brachii muscle with variant course of musculocutaneous nerve: anatomical and clinical insight

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    Aggarwal A

    2009-10-01

    Full Text Available A rare case of four-headed biceps brachii muscle with variation in the course of musculocutaneous nerve was observed in left arm of a 48-year-old embalmed male cadaver. One of the extra head (third was fleshy throughout, originated from anteromedial surface of shaft of humerus and merged with the deep surface of short head. Fourth thin tendinous head originated just below lesser tuberosity of humerus and joined with the third head. Both accessory heads were lying under cover of short head of biceps. Musculocutaneous nerve was coursing between two supernumerary heads and subsequently between third head and short head of biceps brachii muscle. Origin of third head from shaft of humerus led to passage of nerve between this head and short head, before acquiring normal position between biceps brachii and brachialis muscles, and emerging out as lateral cutaneous nerve of forearm. Intramuscular course of nerve may be a potential site for nerve compression by hypertrophied biceps associated with strenuous regular physical activity of biceps or weight lifting.

  3. Solitary cysticercosis of the biceps brachii in a vegetarian: a rare and unusual pseudotumor

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    Abdelwahab, Ibrahim Fikry [Department of Radiology, New York Methodist Hospital Affiliated with Weill Medical College of Cornell University, 506 Sixth Street, Brooklyn, NY 11215 (United States); Klein, Michael J. [Department of Pathology, Mount Sinai Medical Center, 1 Gustave Levy Place, New York, NY 10029 (United States); Hermann, George [Department of Radiology, Mount Sinai Medical Center, 1 Gustave Levy Place, New York, NY 10029 (United States); Abdul-Quader, Mohammed [Department of Radiology, Columbia Presbyterian Medical Center, 177 Fort Washington Avenue, New York, NY 10032 (United States)

    2003-07-01

    We report a 40-year-old man with cysticercosis presenting as a solitary tumor in the biceps brachii muscle. Physical examination revealed an intramuscular mass and magnetic resonance imaging suggested a cyst. The histologic diagnosis was a cysticercus. Such solitary presentation of muscular cysticercosis is extremely rare with only a handful of sporadic reports in the literature. (orig.)

  4. Motor unit properties of biceps brachii during dynamic contractions in chronic stroke patients

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    Kallenberg, L.A.C.; Hermens, Hermanus J.

    The aim of this study was to investigate motor unit (MU) characteristics of the biceps brachii during sinusoidal contractions in chronic stroke patients using high-density surface electromyography. Ten sinusoidal elbow flexion and extension movements were performed both passively and actively by 18

  5. Tenotomy versus Tenodesis in the treatment of the long head of biceps brachii tendon lesions

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    Galasso Olimpio

    2012-10-01

    Full Text Available Abstract Background The superiority of tenotomy vs. tenodesis for surgery on lesions of the long head of the biceps brachii tendon is still under debate. Indeed, high-quality evidence is lacking, mainly because of methodological problems, such as retrospective design, population sample size or lack of patient randomization. Methods/Design The study will be a two-center, double-blind, randomized, controlled trial to compare patients treated with biceps tenotomy or tenodesis for lesions of the long head of the biceps brachii tendon over a 2-year follow-up period. The study participants will be 128 adults with biceps brachii tendinopathy and supraspinatus tendon tears. The primary end point will be the postoperative difference in the Constant-Murley score (CMS between the 2 groups at the two-year follow-up. A comparison of the mean improvement with standard age- and gender-related CMS will be performed. The secondary end point will be evaluation of the postoperative general health of patients, as evaluated with Short Form 36 (SF-36 scores. The number and severity of complications associated with use of the different surgical techniques will be assessed. Discussion This study will be the first randomized and appropriately powered clinical trial to directly compare tenotomy and biceps tenodesis. The results of this study will help to establish clinical practice guidelines for patients suffering from lesions of the long head of the biceps brachii tendon, providing important information to patients and health care providers about the possible complications, outcome predictors and effectiveness of the targeted interventions. Trial Registration Current Controlled Trials ISRCTN38839558

  6. An unusual metastasis of lung adenocarcinoma: Biceps brachii muscle

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    Muzaffer Sariaydin

    2016-01-01

    Full Text Available Skeletal muscle metastasis of nonsmall cell lung carcinoma (NSCLC is a rare occurrence, and the most effective treatment modality is currently unknown. In this case presentation, we report a patient with NSCLC who underwent palliative radiotherapy for biceps muscle metastasis of NSLCS. Our case was a 49-year-old woman who had lung adenocarcinoma with biceps muscle metastasis. She had been followed up for 2 years due to Stage IV lung adenocarcinoma from whom a biopsy was taken from a painful mass in right arm that was found to be compatible with metastasis of lung adenocarcinoma. She had palliative radiotherapy for her painful mass and systemic chemotherapy was planned. After palliative radiotherapy, the pain originating from the metastatic mass in right biceps muscle alleviated. Palliative radiotherapy can be a valuable treatment option for cases with skeletal muscle metastasis.

  7. Distal biceps tendon injuries: diagnosis and management.

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    Ramsey, M L

    1999-01-01

    Rupture of the distal biceps tendon occurs most commonly in the dominant extremity of men between 40 and 60 years of age when an unexpected extension force is applied to the flexed arm. Although previously thought to be an uncommon injury, distal biceps tendon ruptures are being reported with increasing frequency. The rupture typically occurs at the tendon insertion into the radial tuberosity in an area of preexisting tendon degeneration. The diagnosis is made on the basis of a history of a painful, tearing sensation in the antecubital region. Physical examination demonstrates a palpable and visible deformity of the distal biceps muscle belly with weakness in flexion and supination. The ability to palpate the tendon in the antecubital fossa may indicate partial tearing of the biceps tendon. Plain radiographs may show hypertrophic bone formation at the radial tuberosity. Magnetic resonance imaging is generally not required to diagnose a complete rupture but may be useful in the case of a partial rupture. Early surgical reattachment to the radial tuberosity is recommended for optimal results. A modified two-incision technique is the most widely used method of repair, but anterior single-incision techniques may be equally effective provided the radial nerve is protected. The patient with a chronic rupture may benefit from surgical reattachment, but proximal retraction and scarring of the muscle belly can make tendon mobilization difficult, and inadequate length of the distal biceps tendon may necessitate tendon augmentation. Postoperative rehabilitation must emphasize protected return of motion for the first 8 weeks after repair. Formal strengthening may begin as early as 8 weeks, with a return to unrestricted activities, including lifting, by 5 months.

  8. [Systematization of the musculo-tendinous architecture of the human biceps (musculus biceps brachii)].

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    Farisse, J; Guidon, P; Seriat-Gautier, B; Brunet, C; Gambarelli, J

    1984-09-01

    The structure of the brachial biceps is studied based upon the bilateral dissections of six subjects. The object of this work consists of determining the distribution of the group and muscular fibers in relation to the two proximal insertions and the two distal insertions. It is possible to describe the subgroups within each structure. The objective of each of these subgroups is considered within the framework of the coordination between the two muscular formation and the double insertions on the structure of the forearm. It is probable that this muscular formation corresponds to two different movements of the forearm during the locomotory progression. This work can be utilised in the sphere of the comparative biomechanical observation. Also electromyographic and the histochemical characteristics of the muscular group.

  9. Phase- and Workload-Dependent Changes in Corticospinal Excitability to the Biceps and Triceps Brachii during Arm Cycling

    Directory of Open Access Journals (Sweden)

    Alyssa-Joy Spence

    2016-12-01

    Full Text Available This is the first study to examine corticospinal excitability (CSE to antagonistic muscle groups during arm cycling. Transcranial magnetic stimulation (TMS of the motor cortex and transmastoid electrical stimulation (TMES of the corticospinal tract were used to assess changes in supraspinal and spinal excitability, respectively. TMS induced motor evoked potentials (MEPs and TMES induced cervicomedullary evoked potentials (CMEPs were recorded from the biceps and triceps brachii at two positions, mid-elbow flexion and extension, while cycling at 5% and 15% of peak power output. While phase-dependent modulation of MEP and CMEP amplitudes occurred in the biceps brachii, there was no difference between flexion and extension for MEP amplitudes in the triceps brachii and CMEP amplitudes were higher during flexion than extension. Furthermore, MEP amplitudes in both biceps and triceps brachii increased with increased workload. CMEP amplitudes increased with higher workloads in the triceps brachii, but not biceps brachii, though the pattern of change in CMEPs was similar to MEPs. Differences between changes in CSE between the biceps and triceps brachii suggest that these antagonistic muscles may be under different neural control during arm cycling. Putative mechanisms are discussed.

  10. Variations of Origin of Long Head of Biceps Brachii Muscle from Glenoid Labrum of Scapula

    OpenAIRE

    Ketan Chauhan; Meenakshi Bansal; Pratik Mistry; Dhananjay Patil; Sanjay Modi; Chandrakant Mehta

    2013-01-01

    Introduction: The origin of the long head of the biceps brachii tendon in the majority of literature is not same. The relationships of the tendon with the glenoid labrum of the scapula also vary. Methodology: Dissection of 50 shoulder joints of adult human cadavers of both sexes done. The joint cavity was exposed by making an incision in the posterior part of the capsule of the joint to see the extent of its attachment on gleniod labrum. Results: In all specimens, the biceps tendon was found ...

  11. Ultrasound-guided injection for the biceps brachii tendinitis: results and experience.

    Science.gov (United States)

    Zhang, Jingwei; Ebraheim, Nabil; Lause, Gregory E

    2011-05-01

    The purpose of this study was to identify the results of ultrasound-guided injection of corticosteroid for biceps brachii tendinitis. In this randomized and prospective study, we evaluated 45 patients who were treated by free-hand injection without ultrasound guidance (group A) and 53 patients who were treated by ultrasound-guided injection (group B). The mean age was 47 y (range, 28 to 72). The average follow-up was 33 weeks (range, 24 to 56). The visual analog scale score decreased from 7.1 ± 2.3 before injection to 4.2 ± 3.1 at follow-up in group A and from 6.9 ± 2.6 to 2.1 ± 1.9 in group B (p biceps brachii tendinitis.

  12. [Evaluation of surgical repair of distal biceps tendon ruptures].

    Science.gov (United States)

    Behounek, J; Hrubina, M; Skoták, M; Krumpl, O; Zahálka, M; Dvorák, J; Fucík, M

    2009-02-01

    PURPOSE OF THE STUDY To present the results of surgical repair of ruptures of the distal tendon of the biceps brachii muscle and thus show the adequacy of this treatment. MATERIAL Between 1987 and 2006, 19 patients had surgery for distal biceps tendon rupture. Only one side was affected in each patient. All patients were men between 28 and 69 years (average age, 47.5 years) at the time of injury (surgery). When the patients were evaluated at the end of 2007, 18 patients were included, because one died a year after surgery. METHODS The surgical repair always included a single-incision anatomical reattachment into the radial tuberosity. In 11 patients, a modified Mac Reynolds method with screw and washer fixation was used; in seven patients the insertion was fixed with Mitek anchors and, in one, it was sutured to the adjacent soft tissues. The average follow-up was 7 years (range, 1 to 20.5 years). The patients were evaluated for the cause of injury, their physical activity, age, dominance of the injured arm, surgical procedure and complications. RESULTS In 18 patients surgical repair was done early and, in one, at 16 days after injury. In all of them the tendon was detached from its site of insertion, but never torn. The intra-operative complications included, in one patient, bleeding owing to iatrogenic damage to a branch of the brachial artery, and difficult separation of the tendon due to its previous healed injury in another patient. Early post-operative complications included superficial skin necrosis in one patient and transient neurological deficit of the dorsal brand of the radial nerve and of the lateral cutaneous nerve of the forearm in two and one patient, respectively. The late complications were heterotropic ossification in three patients and screw migration in the one treated by the Mac Reynolds method. Excellent results were recorded in 11 patients (61 %), and good outcomes with a slight restriction of motion or muscle strength not limiting the

  13. Analysis of the Biceps Brachii Muscle by Varying the Arm Movement Level and Load Resistance Band

    Directory of Open Access Journals (Sweden)

    Nuradebah Burhan

    2017-01-01

    Full Text Available Biceps brachii muscle illness is one of the common physical disabilities that requires rehabilitation exercises in order to build up the strength of the muscle after surgery. It is also important to monitor the condition of the muscle during the rehabilitation exercise through electromyography (EMG signals. The purpose of this study was to analyse and investigate the selection of the best mother wavelet (MWT function and depth of the decomposition level in the wavelet denoising EMG signals through the discrete wavelet transform (DWT method at each decomposition level. In this experimental work, six healthy subjects comprised of males and females (26 ± 3.0 years and BMI of 22 ± 2.0 were selected as a reference for persons with the illness. The experiment was conducted for three sets of resistance band loads, namely, 5 kg, 9 kg, and 16 kg, as a force during the biceps brachii muscle contraction. Each subject was required to perform three levels of the arm angle positions (30°, 90°, and 150° for each set of resistance band load. The experimental results showed that the Daubechies5 (db5 was the most appropriate DWT method together with a 6-level decomposition with a soft heursure threshold for the biceps brachii EMG signal analysis.

  14. Biceps Brachii Long Head Overactivity Associated with Elbow Flexion Contracture in Brachial Plexus Birth Palsy

    Science.gov (United States)

    Sheffler, Lindsey C.; Lattanza, Lisa; Sison-Williamson, Mitell; James, Michelle A.

    2012-01-01

    Background: The etiology of elbow flexion contracture in children with brachial plexus birth palsy remains unclear. We hypothesized that the long head of the biceps brachii muscle assists with shoulder stabilization in children with brachial plexus birth palsy and that overactivity of the long head during elbow and shoulder activity is associated with an elbow flexion contracture. Methods: Twenty-one patients with brachial plexus birth palsy-associated elbow flexion contracture underwent testing with surface electromyography. Twelve patients underwent repeat testing with fine-wire electromyography. Surface electrodes were placed on the muscle belly, and fine-wire electrodes were inserted bilaterally into the long and short heads of the biceps brachii. Patients were asked to perform four upper extremity tasks: elbow flexion-extension, hand to head, high reach, and overhead ball throw. The mean duration of muscle activity in the affected limb was compared with that in the contralateral, unaffected limb, which was used as a control. Three-dimensional motion analysis, surface dynamometry, and validated function measures were used to evaluate upper extremity kinematics, elbow flexor-extensor muscle imbalance, and function. Results: The mean activity duration of the long head of the biceps brachii muscle was significantly higher in the affected limb as compared with the contralateral, unaffected limb during hand-to-head tasks (p = 0.02) and high-reach tasks (p = 0.03). No significant differences in mean activity duration were observed for the short head of the biceps brachii muscle between the affected and unaffected limbs. Isometric strength of elbow flexion was not significantly higher than that of elbow extension in the affected limb (p = 0.11). Conclusions: Overactivity of the long head of the biceps brachii muscle is associated with and may contribute to the development of elbow flexion contracture in children with brachial plexus birth palsy. Elbow flexion

  15. Biceps brachii long head overactivity associated with elbow flexion contracture in brachial plexus birth palsy.

    Science.gov (United States)

    Sheffler, Lindsey C; Lattanza, Lisa; Sison-Williamson, Mitell; James, Michelle A

    2012-02-15

    The etiology of elbow flexion contracture in children with brachial plexus birth palsy remains unclear. We hypothesized that the long head of the biceps brachii muscle assists with shoulder stabilization in children with brachial plexus birth palsy and that overactivity of the long head during elbow and shoulder activity is associated with an elbow flexion contracture. Twenty-one patients with brachial plexus birth palsy-associated elbow flexion contracture underwent testing with surface electromyography. Twelve patients underwent repeat testing with fine-wire electromyography. Surface electrodes were placed on the muscle belly, and fine-wire electrodes were inserted bilaterally into the long and short heads of the biceps brachii. Patients were asked to perform four upper extremity tasks: elbow flexion-extension, hand to head, high reach, and overhead ball throw. The mean duration of muscle activity in the affected limb was compared with that in the contralateral, unaffected limb, which was used as a control. Three-dimensional motion analysis, surface dynamometry, and validated function measures were used to evaluate upper extremity kinematics, elbow flexor-extensor muscle imbalance, and function. The mean activity duration of the long head of the biceps brachii muscle was significantly higher in the affected limb as compared with the contralateral, unaffected limb during hand-to-head tasks (p = 0.02) and high-reach tasks (p = 0.03). No significant differences in mean activity duration were observed for the short head of the biceps brachii muscle between the affected and unaffected limbs. Isometric strength of elbow flexion was not significantly higher than that of elbow extension in the affected limb (p = 0.11). Overactivity of the long head of the biceps brachii muscle is associated with and may contribute to the development of elbow flexion contracture in children with brachial plexus birth palsy. Elbow flexion contracture may not be associated with an elbow

  16. Ruptures of the distal biceps tendon.

    Science.gov (United States)

    Ward, James P; Shreve, Mark C; Youm, Thomas; Strauss, Eric J

    2014-01-01

    Distal biceps ruptures occur most commonly in middle-aged males and result from eccentric contraction of the biceps tendon. The injury typically presents with pain and a tearing sensation in the antecubital fossa with resultant weakness in flexion and supination strength. Physical exam maneuvers and diagnostic imaging aid in determining the diagnosis. Nonoperative management is reserved for elderly, low demand patients, while operative intervention is generally pursued for younger patients and can consist of nonanatomic repair to the brachialis or anatomic repair to the radial tuberosity. Anatomic repair through a one-incision or two-incision approach is commonplace, while the nonanatomic repairs are rarely performed. No clear advantage exists in operative management with a one-incision versus two-incision techniques. Chronic ruptures present a more difficult situation, and allograft augmentation is often necessary. Common complications after repair include transient nerve palsy, which often resolves, and heterotopic ossification. Despite these possible complications, most studies suggest that better patient outcomes are obtained with operative, anatomic reattachment of the distal biceps tendon.

  17. US Findings of Biceps Tendinitis: Cross Sectional Area Measurements of Long Head of Biceps Brachii

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    Shin, Jong Soo; Seo, Kyung Mook; Lee, Hwa Yeon; Song, In Sup [ChungAng University College of Medicine, Seoul (Korea, Republic of); Yoo, Seung Min [Bundang Cha Hospital, Bundang (Korea, Republic of)

    2009-12-15

    The purpose of this study was to describe typical sonographic findings in patients with biceps tendinitis. Seventy five patients who had been clinically diagnosed with biceps tendinitis were included. Of the 75, 37 were male, 38 were female, and their mean age was 56 {+-} 9.74. The patients complained of shoulder pain and ultrasonography was performed for bilateral shoulders in all patients. The cross sectional area of the biceps tendon was measured. The status of fluid collection around the biceps tendon and accompanying rotator cuff disease were also investigated. The cross sectional areas of the diseased biceps tendon were 0.18 {+-} 0.09 cm2 (range: 0.07-0.42), and the areas of the normal side was 0.11 {+-} 0.05 cm2 (0.03-0.24). The cross sectional area of the diseased biceps tendon was 0.075 {+-} 0.062 cm2 greater, on average, than the uninvolved site (p < 0.01). Thirty six patients(48%) had fluid collection around the inflamed biceps tendon, and 30 patients had accompanied rotator cuff disease. During US examination of the shoulder in patients complaining of shoulder pain, if the cross sectional area of the biceps tendon in the painful shoulder is asymmetrically and larger than the contralateral tendon, biceps tendonitis is suggested

  18. An unusual case of an intramuscular lipoma of the biceps brachii.

    Science.gov (United States)

    Lahrach, Kamal; el Kadi, Khalid Ibn; Mezzani, Amine; Marzouki, Amine; Boutayeb, Fawzi

    2013-01-01

    Lipomas are common benign neoplasms consisting of mature fatty tissue. They are usually of roundish or ovoid shape and are situated in a single anatomical region. They most frequently occur on the back and in the extremities. Most lipomas are subcutaneous and require no imaging evaluation. When deep, large and unusual in location, MRI can identify and localise these tumours and is the best exploration to differentiate lipoma and lipo-sarcoma. We describe a case of a patient with an intramuscular lipoma of the biceps brachii.

  19. Clinical relevance of distal biceps insertional and footprint anatomy

    NARCIS (Netherlands)

    van den Bekerom, Michel P J; Kodde, Izaäk F.; Aster, Asir; Bleys, Ronald L A W; Eygendaal, Denise

    2016-01-01

    Purpose: The aim of this review was to present an overview, based on a literature search, of surgical anatomy for distal biceps tendon repairs, based on the current literature. Methods: A narrative review was performed using Pubmed/Medline using key words: Search terms were distal biceps,

  20. A 3-Dimensional Anatomic Study of the Distal Biceps Tendon

    Science.gov (United States)

    Walton, Christine; Li, Zhi; Pennings, Amanda; Agur, Anne; Elmaraghy, Amr

    2015-01-01

    Background Complete rupture of the distal biceps tendon from its osseous attachment is most often treated with operative intervention. Knowledge of the overall tendon morphology as well as the orientation of the collagenous fibers throughout the musculotendinous junction are key to intraoperative decision making and surgical technique in both the acute and chronic setting. Unfortunately, there is little information available in the literature. Purpose To comprehensively describe the morphology of the distal biceps tendon. Study Design Descriptive laboratory study. Methods The distal biceps terminal musculature, musculotendinous junction, and tendon were digitized in 10 cadaveric specimens and data reconstructed using 3-dimensional modeling. Results The average length, width, and thickness of the external distal biceps tendon were found to be 63.0, 6.0, and 3.0 mm, respectively. A unique expansion of the tendon fibers within the distal muscle was characterized, creating a thick collagenous network along the central component between the long and short heads. Conclusion This study documents the morphologic parameters of the native distal biceps tendon. Reconstruction may be necessary, especially in chronic distal biceps tendon ruptures, if the remaining tendon morphology is significantly compromised compared with the native distal biceps tendon. Knowledge of normal anatomical distal biceps tendon parameters may also guide the selection of a substitute graft with similar morphological characteristics. Clinical Relevance A thorough description of distal biceps tendon morphology is important to guide intraoperative decision making between primary repair and reconstruction and to better select the most appropriate graft. The detailed description of the tendinous expansion into the muscle may provide insight into better graft-weaving and suture-grasping techniques to maximize proximal graft incorporation. PMID:26665092

  1. Variations of Origin of Long Head of Biceps Brachii Muscle from Glenoid Labrum of Scapula

    Directory of Open Access Journals (Sweden)

    Ketan Chauhan

    2013-04-01

    Full Text Available Introduction: The origin of the long head of the biceps brachii tendon in the majority of literature is not same. The relationships of the tendon with the glenoid labrum of the scapula also vary. Methodology: Dissection of 50 shoulder joints of adult human cadavers of both sexes done. The joint cavity was exposed by making an incision in the posterior part of the capsule of the joint to see the extent of its attachment on gleniod labrum. Results: In all specimens, the biceps tendon was found to be attached to the supraglenoid tubercle as well as to the gleniod labrum. In 74% of specimens, the major part of the tendon was attached to the posterior aspect of the labrum while in 26% it was seen in the anterior aspect as well. The posterior labral attachment extended up to the lower part whereas the anterior attachment was limited to the upper part only. On the basis of the biceps attachment to the anterior or posterior labrum, we categorized them into three types of origin. Conclusion: The awareness of these normal anatomical variations are significant for arthroscopic diagnosis and may help to explain the various patterns of injury seen in partial or complete detachment of the tendon, the labrum or both. [Natl J Med Res 2013; 3(2.000: 137-139

  2. Motor unit properties in the biceps brachii of chronic stroke patients assessed with high-density surface EMG

    NARCIS (Netherlands)

    Kallenberg, L.A.C.; Hermens, Hermanus J.

    2009-01-01

    Motor unit properties of the biceps brachii and Fugl-Meyer score were assessed in stroke patients and healthy controls during passive and active elbow flexion and extension contractions. The level of motor recovery as assessed with the Fugl-Meyer was correlated with the ration of the size of the

  3. Motor unit properties of biceps brachii in chronic stroke patients assessed with high-density surface EMG

    NARCIS (Netherlands)

    Kallenberg, L.A.C.; Hermens, Hermanus J.

    2009-01-01

    The aim of this study was to investigate motor unit (MU) characteristics of the biceps brachii in post-stroke patients, using high-density surface electromyography (sEMG). Eighteen chronic hemiparetic stroke patients took part. The Fugl-Meyer score for the upper extremity was assessed. Subjects

  4. The effect of electrical stimulation of the corticospinal tract on motor units of the human biceps brachii

    DEFF Research Database (Denmark)

    Petersen, Nicolas Caesar; Taylor, Janet L; Gandevia, Simon C

    2002-01-01

    In healthy human subjects, descending motor pathways including the corticospinal tract were stimulated electrically at the level of the cervicomedullary junction to determine the effects on the discharge of motoneurones innervating the biceps brachii. Post-stimulus time histograms (PSTHs) were co...

  5. A SLAP lesion associated with calcific tendinitis of the long head of the biceps brachii at its origin.

    Science.gov (United States)

    Kim, Kyung Cheon; Rhee, Kwang Jin; Shin, Hyun Dae; Kim, Young Mo

    2007-12-01

    Calcific tendinitis is a common condition with characteristic clinical and radiological findings. Although we do not know which condition initiated the pathologic cascade, we present a rare case of calcific tendinitis of the long head of the biceps brachii at its origin, associated with a SLAP lesion. The calcium deposit was removed and the SLAP lesion was repaired with a suture anchor arthroscopically.

  6. Complete rupture of the long head of the biceps tendon and the distal biceps tendon

    Directory of Open Access Journals (Sweden)

    Pieter J. Oberholzer

    2014-12-01

    Full Text Available The most common injury to the biceps muscle is rupture of the long head of the biceps tendon. A tear can occur proximally, distally or at the musculotendinous junction. Two cases are discussed, in both of which the patients felt a sudden sharp pain in the upper arm, at the shoulder and elbow respectively, and presented with a biceps muscle bump (Popeye deformity.

  7. Analysis of activity of motor units in the biceps brachii muscle after intercostal-musculocutaneous nerve transfer.

    Science.gov (United States)

    Sakuta, Naoki; Sasaki, Sei-Ichi; Ochiai, Naoyuki

    2005-04-01

    We examined respiratory activity of motor units (MUs) in the internal intercostal nerves (IICNs)-transferred biceps brachii muscle (IC-biceps) in cats. MUs of IC-biceps showed respiratory discharges in inspiratory and expiratory phases, and these were enhanced by CO2 inhalation. Narrowing the airway also enhanced inspiratory and expiratory MUs activity. A mechanical load to the thorax immediately enhanced inspiratory MUs activity and weakened expiratory MUs activity. We analyzed the cross-correlation of MUs activity in interchondral muscle and IC-biceps to characterize the respiratory spinal descending inputs to motoneurons. We confirmed the short-term synchronization from interchondral muscles indicating divergence of a single respiratory presynaptic axon to thoracic motoneurons, but could not find synchronization from IC-biceps. The motor axonal conduction velocity (axonal CV) of IC-biceps MUs was lower than that of interchondral muscles. There was no correlation between the respiratory recruitment order of IC-biceps MUs and their axonal CV. These results indicate that IC-biceps shows the respiratory activities and afferent inputs from intercostal muscle spindles in the neighboring segments remain influential on activity of IC-biceps. In addition, the short-term synchronization from IC-biceps could not be found, suggesting that the intercostal nerve transfer alters the respiratory spinal descending inputs to thoracic motoneurons.

  8. Quantitative Mechanical Properties of the Relaxed Biceps and Triceps Brachii Muscles in Patients with Subacute Stroke: A Reliability Study of the Myoton-3 Myometer

    Directory of Open Access Journals (Sweden)

    Li-ling Chuang

    2012-01-01

    Full Text Available Objective. Test-retest reliability of the myotonometer was investigated in patients with subacute stroke. Methods. Twelve patients with substroke (3 to 9 months poststroke were examined in standardized testing position twice, 60 minutes apart, with the Myoton-3 myometer to measure tone, elasticity, and stiffness of relaxed bilateral biceps and triceps brachii muscles. Intrarater reliability of muscle properties was determined using intraclass correlation coefficient (ICC, the standard error of measurement (SEM, and the minimal detectable change (MDC. Results. Intrarater reliability of muscle properties of bilateral biceps and triceps brachii muscles were good (ICCs=0.79–0.96 except for unaffected biceps tone (ICC=0.72. The SEM and MDC of bilateral biceps and triceps brachii muscles indicated small measurement error (SEM% <10%, MDC% <25%. Conclusion. The Myoton-3 myometer is a reliable tool for quantifying muscle tone, elasticity, and stiffness of the biceps and triceps brachii in patients with subacute stroke.

  9. Age independent and position-dependent alterations in motor unit activity of the biceps brachii.

    Science.gov (United States)

    Harwood, B; Edwards, D L; Jakobi, J M

    2010-09-01

    In the biceps brachii, age-related differences in synaptic excitability and muscle architecture may affect motor unit (MU) activity differently depending on the position of the forearm. It was hypothesised that as a result of these age-related differences, greater changes in MU activity would accompany a change in forearm position in old when compared with young men. Six young (22 +/- 3 years) and six old (84 +/- 3 years) men maintained isometric elbow flexion at 10% of maximal voluntary contraction (MVC) during changes in forearm position. Forty-nine MUs in the short (SBB) and long (LBB) heads of the biceps brachii were followed. Motor unit recruitment and de-recruitment thresholds, motor unit discharge rates (MUDRs), and MU discharge variability were measured. Although an age-related decrease in MU recruitment thresholds, and increase in MU discharge variability was evident, changes in forearm position influenced MUDRs similarly in young and old men (P = 0.27). Motor unit recruitment thresholds of the SBB were highest in the pronated position (8.2 +/- 2.9 %MVC), whereas in the LBB they were highest in the supinated position (8.6 +/- 2.0 %MVC). Motor unit discharge rates of the LBB did not change with forearm position. In the SBB, MUDRs were highest when the forearm was supinated, and also greater when compared with the LBB in this position. No position-dependent changes were observed for MU discharge variability in the LBB, but the SBB exhibited greatest MU discharge variability in the pronated position. The results suggest that MU activity is modulated following a change in forearm position, but the response is similar in young and old adults.

  10. Chemical composition of Infraspinatus, #Triceps brachii, Longissimus thoraces, Biceps femoris, Semitendinosus#, and #Semimembranosus# of Bactrian (#Camelus bactrianus#) camel muscles

    OpenAIRE

    Raiymbek, Gulzhan; Faye, Bernard; Serikbayeva, Assiya; Konuspayeva, Gaukhar; Kadim, Isam T.

    2013-01-01

    The objective of this study was to determine chemical composition of Infraspinatus, Triceps brachii, Longissimus thoraces, Biceps femoris, Semitendinosus, and Semimembranosus muscles from nine Bactrian carcasses (2-3 years of age). The left side muscles were collected and kept in a chiller (3-4ºC) for 48 hrs then stored at -20ºC. Chemical analyses were carried out to determine moisture, crude protein, fat (ether extract), ash, essential and non-essential element contents. The Infraspinatus, T...

  11. Motor unit synchronization in FDI and biceps brachii muscles of strength-trained males.

    Science.gov (United States)

    Fling, Brett W; Christie, Anita; Kamen, Gary

    2009-10-01

    Motor unit (MU) synchronization is the simultaneous or near-simultaneous firing of two MUs which occurs more often than would be expected by chance. The present study sought to investigate the effects of exercise training, muscle group, and force level, by comparing the magnitude of synchronization in the biceps brachii (BB) and first dorsal interosseous (FDI) muscles of untrained and strength-trained college-aged males at two force levels, 30% of maximal voluntary contraction (MVC) and 80% MVC. MU action potentials were recorded directly via an intramuscular needle electrode. The magnitude of synchronization was assessed using previously-reported synchronization indices: k', E, and CIS. Synchronization was significantly higher in the FDI than in the BB. Greater synchronization was observed in the strength-trained group with CIS, but not with E or k'. Also, synchronization was significantly greater at 80% MVC than at 30% MVC with E, but only moderately greater with CIS and there was no force difference with k'. Synchronization prevalence was found to be greater in the BB (80.1%) than in the FDI (71.5%). Thus, although the evidence is a bit equivocal, it appears that MU synchronization is greater at higher forces, and greater in strength-trained individuals than in untrained subjects.

  12. Measurement of the tendon of the biceps brachii after tenotomy: study on cadavers

    Directory of Open Access Journals (Sweden)

    Anderson Cunha Machado

    2015-08-01

    Full Text Available ABSTRACTOBJECTIVE: To evaluate the influence of elbow and forearm range of motion on the distal excursion of the long head of the biceps (LHB. METHODS: The distal excursion of the LHB after tenotomy of the shoulders of eight cadavers was ascertained by measuring the distance between a point marked out on the LHB, 3 cm from the anterolateral border of the acromion, and its position at different degrees of elbow flexion, using a digital pachymeter. The measurements at elbow flexion of 135°, 90°, 45° and 0° were noted: these angles were established using a goniometer. The measurements were made with the forearm in neutral, supination and pronation positions. RESULTS: Differences between the mean measurements of the distal excursion of the LHB (total sample were observed between the degrees of elbow flexion ( p< 0.01. However, no statistical differences were observed between the different forearm positions, between the sides, genders and ages of the cadavers studied. CONCLUSION: Progressive extension of the elbow caused progressive distal excursion of the LHB, but without interference in the forearm position, gender, side or age of the cadavers studied.

  13. ELECTROMYOGRAPHIC ACTIVITY OF THE BICEPS BRACHII AFTER EXERCISE-INDUCED MUSCLE DAMAGE

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    Sirous Ahmadi

    2007-12-01

    Full Text Available It is well known that strenuous eccentric exercise may result in muscle damage. We proposed that vigorous eccentric exercise (EE would impair myoelectric activity of the biceps brachii. This study utilised a 7-day prospective time-series design. Ten healthy males performed a session of 70 maximal EE elbow flexion contractions. Analysis of surface electromyography activity (sEMG was performed on the signals recorded during isometric contractions at 50% (IC50 and 80% (IC80 of maximum voluntary isometric torque (MVT, deriving RMS and MDF as sEMG parameters. Linear regression of the RMS and MDF time-series (20-s sustained IC50 and IC80 was used to extract intercepts and slopes of these signals on each day. Plasma creatine kinase activity (CK, MVT, arm circumference, subjective perception of soreness and elbow joint range of motion were also measured to assess effectiveness of EE to evoke muscle damage. CK increased over resting values until day 5 after EE, and remained significantly (p < 0.05 elevated even on day 7. MVT had decreased to 45% of its initial value by day 2 after EE, and remained significantly depressed for the following 6 days. In addition, muscle soreness and arm circumference increased, and range of motion decreased after EE. A significant shift of MDF intercept towards lower frequencies at both IC50 and IC80 was observed after EE in the exercised arm, and these values gradually recovered within the next 3 days during IC50. Although there were some changes in RMS values, these alterations were persistent in both control and exercised arms, and did not follow a consistent pattern. In conclusion, a prolonged reduction in MDF intercept was observed after EE, but this was not closely time-associated with the biochemical, anthropometric or functional markers of muscle damage. Compared to RMS, MDF was a more consistent measure to reflect changes in sEMG

  14. Long head of the biceps brachii tendon: unenhanced MRI versus direct MR arthrography

    Energy Technology Data Exchange (ETDEWEB)

    Tadros, Anthony S.; Huang, Brady K. [University of California, Department of Radiology, San Diego, CA (United States); Wymore, Lucas; Hoenecke, Heinz; Fronek, Jan [Scripps Clinic, Department of Orthopedic Surgery, La Jolla, CA (United States); Chang, Eric Y. [VA San Diego Healthcare System, Radiology Service, San Diego, CA (United States); University of California, Department of Radiology, San Diego, CA (United States)

    2015-09-15

    We sought to determine the diagnostic accuracy of unenhanced MRI and direct MR arthrography (MRA) for evaluation of the intra-articular long head of the biceps brachii tendon (LHBT) using arthroscopy as the gold standard. A retrospective review of patients who underwent shoulder MRI (n = 132) and MRA (n = 67) within 12 months prior to arthroscopy was performed. MR images were independently reviewed by two blinded musculoskeletal radiologists. Routinely recorded arthroscopic photos/videos were reviewed by an orthopedic surgeon. The LHBT was graded as normal, tendinosis, partial thickness tear less or greater than 50 %, and complete tear. Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and accuracy for tendinosis and tear detection were calculated. MRI correctly diagnosed fewer normal LHBTs compared to MRA (39-54 % versus 74-84 %, respectively; p < 0.005). MRI and MRA did not differ significantly in the diagnosis of tendinosis (18-36 % and 15-38 %, respectively; p > 0.05) and tears (75-83 % and 64-73 %, respectively; p > 0.05). For tendinosis, MRI versus MRA showed 18-36 % and 15-38 % sensitivity, 69-79 % and 83-91 % specificity, 22-28 % and 18-50 % PPV, 74-76 % and 80-86 % NPV, and 61-64 % and 70-81 % accuracy; respectively. For tears, MRI versus MRA showed 75-83 % and 64-73 % sensitivity, 73-75 % and 82-91 % specificity, 66-69 % and 41-62 % PPV, 82-87 % and 92-94 % NPV, and 74-78 % and 79-88 % accuracy; respectively. No significant difference was found between unenhanced MRI and direct MRA for the detection of tendinosis and tears of LHBTs. (orig.)

  15. Inter-Gender sEMG Evaluation of Central and Peripheral Fatigue in Biceps Brachii of Young Healthy Subjects

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    Meduri, Federico; Beretta-Piccoli, Matteo; Calanni, Luca; Segreto, Valentina; Giovanetti, Giuseppe; Barbero, Marco; Cescon, Corrado; D’Antona, Giuseppe

    2016-01-01

    Purpose The purpose of the present study was to evaluate inter-arm and inter-gender differences in fractal dimension (FD) and conduction velocity (CV) obtained from multichannel surface electromyographic (sEMG) recordings during sustained fatiguing contractions of the biceps brachii. Methods A total of 20 recreationally active males (24±6 years) and 18 recreationally active females (22±9 years) performed two isometric contractions at 120 degrees elbow joint angle: (1) at 20% maximal voluntary contraction (MVC) for 90 s, and (2) at 60% MVC until exhaustion the time to perform the task has been measured. Signals from sEMG were detected from the biceps brachii using bidimensional arrays of 64 electrodes and initial values and rate of change of CV and FD of the sEMG signal were calculated. Results No difference between left and right sides and no statistically significant interaction effect of sides with gender were found for all parameters measured. A significant inter-gender difference was found for MVC (p0.05). During the sustained 60% MVC no statistical correlation was found between MVC and CV or FD initial estimates nor between MVC and CV or FD slopes both in males and females whereas. A significant positive correlation between CV and FD slopes was found in both genders (males: r = 0,61; females: r = 0,55). Conclusions Fatigue determines changes in FD and CV values in biceps brachii during sustained contractions at 60% MVC. In particular males show greater increase in the rate of change of CV and FD than females whereas no difference in percentage change of these sEMG descriptors of fatigue was found. A significant correlation between FD and CV slopes found in both genders highlights that central and peripheral myoelectric components of fatigue may interact during submaximal isometric contractions. PMID:28002429

  16. Electromyographic, cerebral and muscle hemodynamic responses during intermittent, isometric contractions of the biceps brachii at three submaximal intensities

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    Yagesh eBhambhani

    2014-06-01

    Full Text Available This study examined the electromyographic, cerebral and muscle hemodynamic responses during intermittent isometric contractions of biceps brachii at 20%, 40% and 60% of maximal voluntary contraction (MVC. Eleven volunteers completed two minutes of intermittent isometric contractions (12/min at an elbow angle of 90° interspersed with three minutes rest between intensities in systematic order. Surface electromyography (EMG was recorded from the right biceps brachii and near infrared spectroscopy (NIRS was used to simultaneously measure left prefrontal and right biceps brachii oxyhemoglobin (HbO2, deoxyhemoglobin (HHb and total hemoglobin (Hbtot. Transcranial Doppler ultrasound was used to measure middle cerebral artery velocity (MCAv bilaterally. Finger photoplethysmography was used to record beat-to-beat blood pressure and heart rate. EMG increased with force output from 20% to 60% MVC (P0.05. MCAv increased from rest to exercise but was not different among intensities (P>0.05. Force output correlated with the root mean square EMG and changes in muscle HbO2 (P0.05 at all three intensities. Force output declined by 8% from the 1st to the 24th contraction only at 60% MVC and was accompanied by systematic increases in RMS, cerebral HbO2 and Hbtot with a levelling off in muscle HbO2 and Hbtot. These changes were independent of alterations in mean arterial pressure. Since cerebral blood flow and oxygenation were elevated at 60% MVC, we attribute the development of fatigue to reduced muscle oxygen availability rather than impaired central n

  17. [Results of transosseous reattachment for distal rupture of the biceps tendon. Evaluation of results].

    Science.gov (United States)

    Abalo, A; Tomta, K; James, N; Walla, A; Agounke, W; Dossim, A

    2011-02-01

    Avulsion of the distal biceps brachii tendon is an uncommon injury. This is a retrospective review of cases operated in our department by transosseous suture fixation on the radial tuberosity, using the single anterior incision. Between 2000 and 2007, a total of 10 patients with distal biceps tendon injury were included. All were men, with an average age of 39 years. The most common mechanism was passive extension against active flexion. The dominant limb was affected in all patients. Clinical diagnosis was the rule. Surgical reattachment to the radial tuberosity through the anterior approach to the elbow was performed. The preoperative period was one week in three cases, between one and three weeks in five cases, and superior to three weeks in two cases. Clinical and instrumental evaluation of the results was done. Average follow-up was 48 months. Subjective results were good in seven cases, acceptable in two cases and poor in one case. Nine patients return to their previous level activity with no limitations. The average range of motion was 0° of extension to 135° of flexion. Strength testing of the injured limbs, compared to the contralateral, using the criteria described by Baker and Bierwagen, revealed a loss of 22% of supination strength and 32% of supination endurance. There was a loss of 14% of flexion strength and 27% of flexion endurance. There were two cases of superficial surgical site infection. There were no cases of nerve damage or heterotopic bone formation. Two main factors were found to explain the poor outcomes: experience of the surgeon and a long preoperative delay. Despite the limitations of this study, we found that transosseous reattachment of the biceps' distal tendon to the radial tuberosity can restore supination. Strength and endurance for supination can be better restored by early intervention. Complications are easily avoided if surgery is performed early and by experts.

  18. [Contribution of the biceps brachii and pronator teres muscles to the efforts of pronation or supination. I. Statistical work (author's transl)].

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    van Hoecke, J; Pérot, C; Goubel, F

    1978-03-20

    The electrical activity of the biceps brachii and pronator teres muscles is studied through the prono-supination of the forearm in some isometrical conditions (static work) with different loads and joint positions. If the pronator teres is always being active in pronation, this activity is a function of the load and of the wrist and elbow positions. The same phenomena can be observed for the biceps brachii but when in supination. From the curvilinear relationships between the integrated electrical activity and the load--observed on both muscles--some torque-angle relationships can be established for the biceps brachii which show that a bifunctional muscle seems to be characterized by a very and unique force-length relationship.

  19. Endoscopic Repair of Acute and Chronic Retracted Distal Biceps Ruptures.

    Science.gov (United States)

    Bhatia, Deepak N

    2016-12-01

    Distal biceps tendon (DBT) ruptures are infrequent injuries that result in pain, weakness, and cosmetic deformity. Severe retraction of the ruptured DBT can occur at the time of injury, or in chronic neglected ruptures, and surgical exposure is performed using a single incision or a 2-incision technique. The technique presented here describes an endoscopic approach using 3 portals that provide access to the retracted DBT, biceps sheath, and radial tuberosity. Preoperative sonographic localization of the retracted DBT and neurovascular structures is used to guide portal placement. The parabiceps portal is used for visualization of the biceps sheath remnant, and the midbiceps portal is used to visualize and retrieve the retracted tendon in the arm. The retracted DBT is shuttled through the biceps sheath into the upper forearm, and 2 suture anchors are passed into the radial tuberosity under direct endoscopic vision. The DBT is whipstitched via the distal anterior portal, and nonsliding knots are tied to securely reattach the DBT to the prepared radial tuberosity. Copyright © 2016 American Society for Surgery of the Hand. Published by Elsevier Inc. All rights reserved.

  20. Biomechanical evaluation of the long head of the biceps brachii tendon fixed by three techniques: a sheep model

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    Carlos Henrique Ramos

    Full Text Available ABSTRACT OBJECTIVE: To evaluate the biomechanical properties of the fixation of the long head of the biceps brachii into the humeral bone with suture anchors, interference screw, and soft tissue suture, comparing strength, highest traction load, and types of fixation failure. METHODS: Thirty fresh-frozen sheep shoulders were used, separated into three groups of ten for each technique. After fixation, the tendons were subjected to longitudinal continuous loading, obtaining load-to-failure (N and displacement (mm. RESULTS: The mean load-to-failure for suture anchors was 95 ± 35.3 N, 152.7 ± 52.7 N for interference screw, and 104.7 ± 23.54 N for soft tissue technique. There was a statistically significant difference (p < 0.05, with interference screw demonstrating higher load-to-failure than suture anchor fixation (p = 0.00307 and soft tissue (p = 0.00473. The strength of interference screw was also superior when compared with the other two methods (p = 0.0000127 and p = 0.00000295, respectively. There were no differences between suture anchors and soft tissue technique regarding load-to-failure (p = 0.9420 and strength (p = 0.141. CONCLUSION: Tenodesis of the long head of the biceps brachii with interference screw was stronger than the suture anchors and soft tissue techniques. The other two techniques did not differ between themselves.

  1. Reliability of near-infrared spectroscopy for measuring biceps brachii oxygenation during sustained and repeated isometric contractions

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    Muthalib, Makii; Millet, Guillaume Y.; Quaresima, Valentina; Nosaka, Kazunori

    2010-01-01

    We examine the test-retest reliability of biceps brachii tissue oxygenation index (TOI) parameters measured by near-infrared spectroscopy during a 10-s sustained and a 30-repeated (1-s contraction, 1-s relaxation) isometric contraction task at 30% of maximal voluntary contraction (30% MVC) and maximal (100% MVC) intensities. Eight healthy men (23 to 33 yr) were tested on three sessions separated by 3 h and 24 h, and the within-subject reliability of torque and each TOI parameter were determined by Bland-Altman+/-2 SD limits of agreement plots and coefficient of variation (CV). No significant (P>0.05) differences between the three sessions were found for mean values of torque and TOI parameters during the sustained and repeated tasks at both contraction intensities. All TOI parameters were within+/-2 SD limits of agreement. The CVs for torque integral were similar between the sustained and repeated task at both intensities (4 to 7%) however, the CVs for TOI parameters during the sustained and repeated task were lower for 100% MVC (7 to 11%) than for 30% MVC (22 to 36%). It is concluded that the reliability of the biceps brachii NIRS parameters during both sustained and repeated isometric contraction tasks is acceptable.

  2. Muscle spindle composition and distribution in human young masseter and biceps brachii muscles reveal early growth and maturation.

    Science.gov (United States)

    Osterlund, Catharina; Liu, Jing-Xia; Thornell, Lars-Eric; Eriksson, Per-Olof

    2011-04-01

    Significant changes in extrafusal fiber type composition take place in the human masseter muscle from young age, 3-7 years, to adulthood, in parallel with jaw-face skeleton growth, changes of dentitions and improvement of jaw functions. As motor and sensory control systems of muscles are interlinked, also the intrafusal fiber population, that is, muscle spindles, should undergo age-related changes in fiber type appearance. To test this hypothesis, we examined muscle spindles in the young masseter muscle and compared the result with previous data on adult masseter spindles. Also muscle spindles in the young biceps brachii muscle were examined. The result showed that muscle spindle composition and distribution were alike in young and adult masseter. As for the adult masseter, young masseter contained exceptionally large muscle spindles, and with the highest spindle density and most complex spindles found in the deep masseter portion. Hence, contrary to our hypothesis, masseter spindles do not undergo major morphological changes between young age and adulthood. Also in the biceps, young spindles were alike adult spindles. Taken together, the results showed that human masseter and biceps muscle spindles are morphologically mature already at young age. We conclude that muscle spindles in the human young masseter and biceps precede the extrafusal fiber population in growth and maturation. This in turn suggests early reflex control and proprioceptive demands in learning and maturation of jaw motor skills. Similarly, well-developed muscle spindles in young biceps reflect early need of reflex control in learning and performing arm motor behavior. Copyright © 2011 Wiley-Liss, Inc.

  3. Nerve root distribution of deltoid and biceps brachii muscle in cervical spondylotic myelopathy: a potential risk factor for postoperative shoulder muscle weakness after posterior decompression.

    Science.gov (United States)

    Yonemura, Hiroshi; Kaneko, Kazuo; Taguchi, Toshihiko; Fujimoto, Hideaki; Toyoda, Kouichiro; Kawai, Shinya

    2004-01-01

    To investigate the nerve root distribution of deltoid and biceps brachii muscle, compound muscle action potentials (CMAPs) were recorded intraoperatively following nerve root stimulation in cervical spondylotic myelopathy. A total of 19 upper limbs in 12 patients aged 55-72 years (mean, 65.5 years) with cervical spondylotic myelopathy were examined. CMAPs were recorded from deltoid and biceps brachii muscle following C5 and C6 root stimulation. Although both C5 and C6 roots were innervated for deltoid and biceps brachii muscle in all subjects, the amplitude ratio of CMAPs (C5/C6) differed individually depending on the symptomatic intervertebral levels of the spinal cord. The C5 root predominantly innervated both deltoid and biceps brachii in patients with symptomatic cord lesions at the C4-C5 intervertebral level compared to patients with symptomatic cord lesions at the C5-C6 intervertebral level. Although no patients sustained postoperative radiculopathy in our study, severe weakness and unfavorable recovery are expected when the C5 root in patients with C4-C5 myelopathy is damaged. From the electrophysiological aspect, C4-C5 cord lesions are likely to be a potential risk factor for postoperative shoulder muscle weakness in patients with compressive cervical myelopathy.

  4. Immediate electromyographic changes of the biceps brachii and upper rectus abdominis muscles due to the Pilates centring technique.

    Science.gov (United States)

    Barbosa, Alexandre Wesley Carvalho; Martins, Fábio Luiz Mendonça; Vitorino, Débora Fernandes de Melo; Barbosa, Michelle Cristina Sales Almeida

    2013-07-01

    To evaluate the electrical behaviour of the biceps brachii (BB) and upper rectus abdominis (URA) by surface electromyography (sEMG) during a forearm flexion with and without the Pilates centring technique. Ten female subjects (with a minimum of one week of experience with the Pilates method) were recruited. The long head of the BB and URA were evaluated while an isotonic contraction of the BB was performed using the Pilates breathing technique and powerhouse contraction, followed by another contraction without these techniques. The data were normalised by a maximal voluntary isometric contraction. Normality was accepted, and the paired t-test was used to determine data differences (p concentric compared to the eccentric phase. In addition, this last phase, the centring activation was greater than without the Pilates technique. The Pilates method seems to influence the increase in BB activity during dynamic contraction, especially during the eccentric phase. Copyright © 2013 Elsevier Ltd. All rights reserved.

  5. Behaviour of the electrical impedance myography in isometric contraction of biceps brachii at different elbow joint angles

    Science.gov (United States)

    Coutinho, A. B. B.; Jotta, B.; Pino, A. V.; Souza, M. N.

    2012-12-01

    Electrical impedance myography (EIM) can be understood as an experimental technique applied to evaluate bioelectrical impedance associated to the muscular activity. With the development of technique, some studies are trying to associate the EIM parameters with the morphological and physiological changes that occur in the muscle during contraction. In this context this work sought to associate EIM parameters observed during isometric contractions of the biceps brachii muscle at different elbow joint angles with the correspondent muscular force. Differently from previous works that did not observe significant correlation between those data, our findings point to high correlations between the some EIM resistive parameters and the muscle force. Despite the need of further investigation, our results indicated that EIM technique can be used to estimate muscle force in a noninvasive way.

  6. Repair of the torn distal biceps tendon by endobutton fixation

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    Ravi K Gupta

    2012-01-01

    Full Text Available Background: A number of techniques have been described to reattach the torn distal biceps tendon to the bicipital tuberosity. We report a retrospective analysis of single incision technique using an endobutton fixation in sports persons. Materials and Methods: The present series include nine torn distal biceps tendons in eight patients, fixed anatomically to the radial tuberosity with an endobutton by using a single incision surgical technique; seven patients had suffered the injuries during contact sports. The passage of the endobutton was facilitated by using a blunt tipped pin in order to avoid injury to the posterior interosseous nerve. The patients were evaluated by Disabilities of the Arm, Shoulder and Hand (DASH score and Mayo elbow score. Results: The average age of the patients was 27.35 years (range 21-42 years. Average follow-up was 41.5 months (range 24-102 months. The final average flexion extension arc was 0°-143°, while the average pronation and supination angles were 77° (range 70°-82° and 81° (range 78°-85°, respectively at the last followup. All the patients had a Disabilities of the Arm, Shoulder and Hand (DASH score of 0 and a Mayo elbow score of 100 each. All the seven active sports persons were able to get back to their respective game. There was no nerve injury or any other complication. Conclusions: The surgical procedure used by us is a simple, safe and reproducible technique giving minimal morbidity and better cosmetic results.

  7. [The laterocranial fascia structures in the upper and forearm and the differences in the insertion of the M. biceps brachii in domestic mammals].

    Science.gov (United States)

    Künzel, W; Forstenpointner, G; Skolek-Winnisch, R

    1993-03-01

    The laterocranial fascia of the upper arm and forearm, as well as aponeurotic relationships of the Musculus biceps brachii were investigated on each of ten forelimbs from horses, cattle and swine. Ten canine biceps were also investigated. Equine and bovine fascia contain elastic components. An as-yet undescribed ligament-like aponeuroses of the laterocranial forearm fascia to the Fossa radialis humeri was seen in all three species studied. The laterocranial fascia of the upper and forearm form a common passage for the Musculi brachialis et extensor carpi radialis. In the case of the horse, the ulnar aponeurotic tendon of the biceps muscle crosses below the Ligamentum collaterale cubiti medialis. In cattle, on the other hand, it runs between the two branches of the collateral ligament, to attach on the olecranon. This portion of the equine tendon protrudes into the joint. It has connective tissue character in young animals, but becomes fibrocartilaginous in older horses. The radial aponeuroses of the canine biceps exhibits two branches. A situation similar to that seen for the ulnar aponeuroses of the equine Musculus biceps brachii is observed on the inside surface of the porcine Ligamentum cubiti mediale, in which a wedge of connective tissue protrudes into the joint, taking on fibrocartilaginous character in older animals.

  8. The role of biceps brachii and brachioradialis for the control of elbow flexion and extension movements.

    Science.gov (United States)

    von Werder, Sylvie Charlotte Frieda Anneliese; Disselhorst-Klug, Catherine

    2016-06-01

    How do synergistic muscles interact, when their contraction aims at stabilizing and fine-tuning a movement, which is induced by the antagonistic muscle? The aim of the study was to analyze the interaction of biceps and brachioradialis during fine-tuning control tasks in comparison to load bearing ones. The surface electromyogram of biceps, brachioradialis and triceps were examined in 15 healthy subjects in dynamic flexion and extension movements with different combinations of contraction levels, joint angles and angular velocities. The measurements were conducted in two configurations, where the torque due to an external load opposes the rotational direction of the elbow flexion (load bearing tasks) or the elbow extension (fine-tuning tasks). Whereas during load bearing control tasks, similar muscular activation of biceps and brachioradialis was observed for all joint angles, angular velocities and external loads, during fine-tuning control tasks a significant difference of the muscular activation of both flexors was observed for 1kg, F(3.639,47.305)=2.864, p=0.037, and 5kg of external load, F(1.570,21.976)=6.834, p=0.008. The results confirm the synergistic muscular activation of both flexors during load bearing tasks, but suggest different control strategies for both flexors when they comprise a fine-tuning control task.

  9. Anomalies of the long head of the biceps brachii tendon: clinical significance, MR arthrographic findings, and arthroscopic correlation in two patients

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    Gaskin, Cree M.; Blount, Kevin J. [UVA Health Sciences Center, Department of Radiology, Charlottesville, VA (United States); Golish, S.R.; Diduch, David R. [UVA Health Sciences Center, Department of Orthopaedics, Charlottesville, VA (United States)

    2007-08-15

    Two patients with clinically relevant anomalies of the long head of the biceps brachii tendon (LHBT) are presented with MR arthrography and surgical correlation. Such variations in the LHBT can mimic tears of the tendon itself or the adjacent superior labrum both on MR arthrography and at surgery. MR arthrographic features are recognizable and allow for correct prospective diagnosis, possibly averting unnecessary surgery. Although further study is needed, patients with these anomalies may be at increased risk for developing shoulder instability. (orig.)

  10. Arthroscopic evaluation and treatment of biceps brachii long head tendon injuries: A survey of the MOON shoulder group

    Directory of Open Access Journals (Sweden)

    Timothy Miller

    2011-01-01

    Full Text Available Context: Injuries to the biceps brachii long head tendon commonly occur in conjunction with tears in the rotator cuff and glenoid labrum. Consensus on treatment of varying levels of severity is undetermined. Settings and Design: We surveyed members of the Multicenter Orthopedic Outcomes Network (MOON Shoulder Group, to determine a consensus on arthroscopic grading and treatment. Aims: We hypothesized that the Lafosse classification system would show a high level of inter- and intraobserver agreement regarding grading/treatment. Materials and Methods: Arthroscopic videos of 30 patients determined to have biceps brachii long head tendon injuries were viewed by 13 surgeons. The surgeons graded the severity of the injury macrostructure based on the Lafosse classification system and chose from a list of treatment options. Four months later the same surgeons viewed the same videos and repeated the survey. Statistical Analysis Used: Analysis with weighted and non-weighted Kappa values was performed to determine intra- and interobserver reliability for severity grading and to determine the preferred treatments for each level of severity. Results: Intraobserver reliability testing for the Lafosse system showed substantial agreement after two rounds (81.28%, K=0.7006. Interobserver testing demonstrated substantial agreement for Grade 0 (K=0.7152, fair agreement for Grade 1 (K=0.3803, and moderate agreement for Grade 2 (K=0.5156. Combined responses recommended no surgical treatment for 95.4% of the lesions classified as grade 0 (62/65. No surgical treatment was recommended for Grade 1 lesions in 24.1% of the cases (35/145, debridement in 38.6% (56/145, and tenotomy or tenodesis in 37.2% (54/145. Evaluators preferred tenotomy or tenodesis for 98.3% of the Grade 2 lesions (177/180. Conclusions: Analysis of the Lafosse system indicated substantial intraobserver reliability for all grades. As Grades 1 and 2 showed only fair and moderate agreement, a need for a

  11. Electromyographic Responses during Elbow Movement at Two Angles with Voluntary Contraction: Influences of Muscle Activity on Upper Arm Biceps Brachii

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    Nizam Uddin Ahamed

    2012-11-01

    Full Text Available Analysis of Electromyography (EMG signals generated by individuals is part of human musculoskeletal system research and signals are always influenced by the electrode placement in the muscle. This characteristic is also obvious at Biceps Brachii (BB muscles during the movement of elbow at different angles. The purpose of this study was to monitor and determine the BB muscle function in 3 conditions: (i electrodes were placed at 3 locations on the BB, (ii elbow was fixed at the two angles (90° and 150° and (iii isometric contractions were performed to record EMG data. EMG data were obtained from six healthy subjects (n = 6, mean±SD age = 24.4±3.1 years, body mass = 68±6.3 kg, height = 164±4.1 cm, BMI = 21.2±2.3, right arm dominated. A Bluetooth-enabled laptop, wireless EMG sensors, digital dynamometer and angle meter were used for data recording. EMG data were calculated and analyzed by average value, standard deviation, Root Mean Square (RMS and highest peak of the signal during maximum voluntary contraction. All the dependent variables were calculated using repeated measures Analysis of Variance (ANOVA. The results from the research showed that (i according to the calculation of average RMS and the maximum peaks of EMG signals, there was a significant difference between 2 angles (p = 0.047, i.e., p<0.05, but no interaction at the same angles when overall average EMG and standard deviation value are considered and (ii majority of the outcomes showed that EMG activity is higher in the order of middle, upper and lower BB muscle. It is therefore important that electrical signals generated upon different electrode placements and angles on the BB muscle are used for biceps rehabilitation and other physiological measurements on upper arm.

  12. Attrition tendinitis of long head of biceps brachii in relation to humeral head osteonecrosis: case report.

    Science.gov (United States)

    Wiesler, Ethan R; Sarlikiotis, Thomas; Mavrogenis, Andreas F; Kokkalis, Zinon T

    2013-01-01

    This case report identifies a 41-year-old male patient who developed anterior shoulder pain in the setting of humeral head osteonecrosis. As a consequence of the cartilage degeneration, multiple loose bodies formed and migrated into the bicipital tendon sheath, causing attrition tendinitis, which was a feature of the clinical presentation. The patient was treated by a combination of arthroscopic glenohumeral joint debridement and open tenodesis of the biceps using a suture anchor. Follow-up revealed asymptomatic shoulder function by 18 months. This is the first report in the literature of bicipital tendinitis in the context of avascular necrosis of the shoulder.

  13. Localized Electrical Impedance Myography of the Biceps Brachii Muscle during Different Levels of Isometric Contraction and Fatigue.

    Science.gov (United States)

    Li, Le; Shin, Henry; Li, Xiaoyan; Li, Sheng; Zhou, Ping

    2016-04-22

    This study assessed changes in electrical impedance myography (EIM) at different levels of isometric muscle contraction as well as during exhaustive exercise at 60% maximum voluntary contraction (MVC) until task failure. The EIM was performed on the biceps brachii muscle of 19 healthy subjects. The results showed that there was a significant difference between the muscle resistance (R) measured during the isometric contraction and when the muscle was completely relaxed. Post hoc analysis shows that the resistance increased at higher contractions (both 60% MVC and MVC), however, there were no significant changes in muscle reactance (X) during the isometric contractions. The resistance also changed during different stages of the fatigue task and there were significant decreases from the beginning of the contraction to task failure as well as between task failure and post fatigue rest. Although our results demonstrated an increase in resistance during isometric contraction, the changes were within 10% of the baseline value. These changes might be related to the modest alterations in muscle architecture during a contraction. The decrease in resistance seen with muscle fatigue may be explained by an accumulation of metabolites in the muscle tissue.

  14. Localized Electrical Impedance Myography of the Biceps Brachii Muscle during Different Levels of Isometric Contraction and Fatigue

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    Le Li

    2016-04-01

    Full Text Available This study assessed changes in electrical impedance myography (EIM at different levels of isometric muscle contraction as well as during exhaustive exercise at 60% maximum voluntary contraction (MVC until task failure. The EIM was performed on the biceps brachii muscle of 19 healthy subjects. The results showed that there was a significant difference between the muscle resistance (R measured during the isometric contraction and when the muscle was completely relaxed. Post hoc analysis shows that the resistance increased at higher contractions (both 60% MVC and MVC, however, there were no significant changes in muscle reactance (X during the isometric contractions. The resistance also changed during different stages of the fatigue task and there were significant decreases from the beginning of the contraction to task failure as well as between task failure and post fatigue rest. Although our results demonstrated an increase in resistance during isometric contraction, the changes were within 10% of the baseline value. These changes might be related to the modest alterations in muscle architecture during a contraction. The decrease in resistance seen with muscle fatigue may be explained by an accumulation of metabolites in the muscle tissue.

  15. Motor unit activity in biceps brachii of left-handed humans during sustained contractions with two load types.

    Science.gov (United States)

    Gould, Jeffrey R; Cleland, Brice T; Mani, Diba; Amiridis, Ioannis G; Enoka, Roger M

    2016-09-01

    The purpose of the study was to compare the discharge characteristics of single motor units during sustained isometric contractions that required either force or position control in left-handed individuals. The target force for the two sustained contractions (24.9 ± 10.5% maximal force) was identical for each biceps brachii motor unit (n = 32) and set at 4.7 ± 2.0% of maximal voluntary contraction (MVC) force above its recruitment threshold (range: 0.5-41.2% MVC force). The contractions were not sustained to task failure, but the duration (range: 60-330 s) was identical for each motor unit and the decline in MVC force immediately after the sustained contractions was similar for the two tasks (force: 11.1% ± 13.7%; position: 11.6% ± 9.9%). Despite a greater increase in the rating of perceived exertion during the position task (task × time interaction, P contractions requiring either force or position control.

  16. Changes in cortical beta activity related to a biceps brachii movement task while experiencing exercise induced muscle damage.

    Science.gov (United States)

    Plattner, Kristina; Lambert, Michael I; Tam, Nicholas; Lamberts, Robert P; Baumeister, Jochen

    2014-01-17

    Exercise-induced-muscle-damage (EIMD) is a well-described phenomenon which leads to decreased force output and altered neuromuscular function. How these symptoms of EIMD affect brain function, in particular cortical activity has not been described. Therefore the aim of this study was to investigate the relationship between the symptoms of EIMD and cortical beta (β) activity during a submaximal biceps brachii movement. Half of the subjects participated in an EIMD protocol. Control and EIMD groups were monitored for 132h thereafter. Muscle pain scores in the EIMD group peaked after 36h with the lowest muscle torque reported at 12h. Beta-1 and -2 activity was increased in the frontal and parietal area in the experimental group at 12h. This suggests an impact of EIMD induced neuromuscular changes on the cortical proprioceptive and motor perceptive networks. Beta-2 activity decreased in the control group over time suggesting a loss in focused attention and greater familiarization with the protocol as the study progressed. These data suggest that a change in β-1 and -2 activity is associated with integrating movement perception and proprioception post-EIMD.

  17. The effects of kinesio taping on architecture, strength and pain of muscles in delayed onset muscle soreness of biceps brachii.

    Science.gov (United States)

    Lee, Yong Sin; Bae, Sea Hyun; Hwang, Jin Ah; Kim, Kyung Yoon

    2015-02-01

    [Purpose] This study aimed to confirm the effects of kinesio taping (KT) on muscle function and pain due to delayed onset muscle soreness (DOMS) of the biceps brachii. [Subjects and Methods] Thirty-seven subjects with induced DOMS were randomized into either Group I (control, n=19) or Group II (KT, n=18). Outcome measures were recorded before the intervention (application of KT) and at 24, 48, and 72 hours after the intervention. DOMS was induced, and muscle thickness was measured using ultrasonic radiography. Maximal voluntary isometric contraction (%MVIC) was measured via electromyography (EMG). Subjective pain was measured using a visual analogue scale (VAS). [Results] Group I exhibited a positive correlation between muscle thickness and elapsed time from intervention (24, 48, and 72 hours post induction of DOMS); they also showed a significant decrease in MVIC(%). Group II showed significant increases in muscle thickness up to the 48-hour interval post induction of DOMS, along with a significant decrease in MVIC (%). However, in contrast to Group I, Group II did not show a significant difference in muscle thickness or MVIC (%) at the 72-hour interval in comparison with the values prior to DOMS induction. [Conclusion] In adults with DOMS, activation of muscles by applying KT was found to be an effective and faster method of recovering muscle strength than rest alone.

  18. Acute effects of direct inhibitory pressure over the biceps brachii myotendinous junction on skeletal muscle activation and force output.

    Science.gov (United States)

    Cè, Emiliano; Longo, Stefano; McCoy, Emily; Bisconti, Angela Valentina; Tironi, Davide; Limonta, Eloisa; Rampichini, Susanna; Rabuffetti, Marco; Esposito, Fabio

    2017-08-12

    Force (F) reduction is reported with myotendinous junction (MTJ) manipulation. Autogenic inhibition reflex (AIR) activation is supposed to be the main mechanism. Still, its role remains unclear. The study aimed at assessing the effects of MTJ direct inhibitory pressure (DIP) on neuromuscular activation and F in the elbow flexor (agonist) and extensor (antagonist) muscles. After maximum voluntary contraction (MVC) assessment, thirty-five participants randomly performed submaximal contractions at 20, 40, 60, and 80% MVC. Electromyographic (EMG), mechanomyographic (MMG), and F signals were recorded. Protocol was repeated under (i) DIP (10-s pressure on the biceps brachii MTJ) with the elbow at 120° (DIP120), (ii) DIP with the elbow at 180° (DIP180), and (iii) without DIP (Ctrl). Electromechanical delay (EMD) components, EMG and MMG root mean square (RMS), and rate of force development (RFD) were calculated. Independently from the angle, DIP induced decrements in MVC, RFD, and RMS of EMG and MMG signals and lengthened the EMD components in agonist muscles (P<0.05). The DIP-induced decrease in F output of the agonist muscles seems to be possibly due to a concomitant impairment of the neuromuscular activation and a transient decrease in stiffness. After DIP, the antagonist muscle displayed no changes; therefore, the intervention of AIR remains questionable. Copyright © 2017 Elsevier Ltd. All rights reserved.

  19. Focal partial tears of the long head of the biceps brachii tendon at the entrance to the bicipital groove: MR imaging findings, surgical correlation, and clinical significance

    Energy Technology Data Exchange (ETDEWEB)

    Gaskin, Cree M.; Anderson, Mark W.; Choudhri, Asim [UVA Health System, Department of Radiology, Charlottesville, VA (United States); Diduch, David R. [UVA Health System, Department of Orthopedics, Charlottesville, VA (United States)

    2009-10-15

    The purpose of the study was to depict a subset of focal partial tears of the biceps brachii tendon, occurring at the entrance to the bicipital groove, which can be difficult to detect with MRI. The institutional review board approved this HIPAA-compliant study; informed consent was waived. The authors retrospectively reviewed imaging and medical records in 16 consecutive patients (12 men, 4 women; mean age, 57 years) who had prospective MRI diagnoses of tendinopathy and/or partial tearing of the intra-articular segment of the long head of the biceps brachii tendon (LHBT) at the entrance to the bicipital groove (restricted to within 1 cm of the groove entrance) and who also had surgical correlation within 4 months of imaging. Focal intrasubstance signal abnormality was noted in the tendons of 16 out of 16 (100%) patients. Focal tendon enlargement was noted in 8 out of 16 patients (50%). Fifteen out of 16 biceps partial tears (94%) were treated surgically. Shoulder pathology was restricted to the groove entrance in 4 out of 16 patients (25%). We depict a subset of focal partial tears of the biceps tendon, which can be difficult to detect on MRI because of their anatomical location at the entrance to the bicipital groove. Although they may coexist with other causes of shoulder pain, these lesions can also occur in isolation. In either case, they are potential causes of pain that can be addressed surgically. (orig.)

  20. Acute distal biceps rupture in an adolescent weightlifter on chronic steroid suppression: a case report.

    Science.gov (United States)

    Ding, David Y; LaMartina, Joey A; Zhang, Alan L; Pandya, Nirav K

    2016-09-01

    Distal biceps tendon ruptures are uncommon events in the adult population and exceedingly rare in the adolescent population. To the best of our knowledge, this is the first and only report of a distal biceps tendon rupture in an adolescent with a history of chronic corticosteroid suppression. We present a case of a 17-year-old male on chronic corticosteroid suppression who underwent a successful distal biceps tendon repair after an acute rupture following weightlifting. At the 1-year follow-up, the patient reports full range of motion and strength, and is able to return to his preinjury activity level with sports and weightlifting. Acute distal biceps ruptures are uncommon injuries in the pediatric population, but may occur in conjunction with chronic corticosteroid use. Anatomic repair, when possible, can restore function and strength. level IV, case report.

  1. The impact of rectification on the electrically evoked long-latency reflex of the biceps brachii muscle.

    Science.gov (United States)

    Alaid, Ssuhir; Kornhuber, Malte E

    2013-11-27

    Long latency reflexes (LLR) were elicited electrically and obtained by full wave rectified and non-rectified data recordings in 10 healthy subjects. After single or train stimuli (sensory radial nerve; interstimulus interval 3ms) amplitude and peak latency values were measured over the bent biceps brachii (BB) muscle, either without or with 1.5kg weight load. After rectification, mean LLR amplitude values made up 30% of the non-rectified data, independent from the stimulus type and weight load. In the non-rectified data, a significant gain in amplitude resulted from train stimuli compared with single stimuli, and from weight load compared to no weight load. No such significant difference was detected when rectified data were analysed. Furthermore, average amplitude values of rectified and non-rectified curves were studied using 11 sine waves and damped sine waves with equal phase intervals that were varied from 0° up to 34.4°. Phase shifts ranging from 10° to 25° resulted in excess amplitude decline of rectified data compared with non-rectified data. The long and polysynaptic course that LLR information takes leads to considerable overlap of responses to subsequent stimuli. This overlap of motor unit potentials forming the LLR obviously results in excess amplitude cancellation after rectification as shown for sine and damped sine waves. Rectification leads to an increase in the frequency content of the data that renders it prone to phase cancellation. In the present study, this cancellation was harmful as it prevented detection of important factors of influence such as stimulus strength and motor unit recruitment level.

  2. Analysis of concentric and eccentric contractions in biceps brachii muscles using surface electromyography signals and multifractal analysis.

    Science.gov (United States)

    Marri, Kiran; Swaminathan, Ramakrishnan

    2016-06-23

    Muscle contractions can be categorized into isometric, isotonic (concentric and eccentric) and isokinetic contractions. The eccentric contractions are very effective for promoting muscle hypertrophy and produce larger forces when compared to the concentric or isometric contractions. Surface electromyography signals are widely used for analyzing muscle activities. These signals are nonstationary, nonlinear and exhibit self-similar multifractal behavior. The research on surface electromyography signals using multifractal analysis is not well established for concentric and eccentric contractions. In this study, an attempt has been made to analyze the concentric and eccentric contractions associated with biceps brachii muscles using surface electromyography signals and multifractal detrended moving average algorithm. Surface electromyography signals were recorded from 20 healthy individuals while performing a single curl exercise. The preprocessed signals were divided into concentric and eccentric cycles and in turn divided into phases based on range of motion: lower (0°-90°) and upper (>90°). The segments of surface electromyography signal were subjected to multifractal detrended moving average algorithm, and multifractal features such as strength of multifractality, peak exponent value, maximum exponent and exponent index were extracted in addition to conventional linear features such as root mean square and median frequency. The results show that surface electromyography signals exhibit multifractal behavior in both concentric and eccentric cycles. The mean strength of multifractality increased by 15% in eccentric contraction compared to concentric contraction. The lowest and highest exponent index values are observed in the upper concentric and lower eccentric contractions, respectively. The multifractal features are observed to be helpful in differentiating surface electromyography signals along the range of motion as compared to root mean square and median

  3. Development of the Human Biceps Brachii Tendon and Coracoglenoid Ligament (7th-12th Week of Development).

    Science.gov (United States)

    de la Cuadra-Blanco, Crótida; Arráez-Aybar, Luis A; Murillo-González, Jorge A; Herrera-Lara, Manuel E; Mérida-Velasco, Juan A; Mérida-Velasco, José R

    2017-01-01

    The goal of this study is to clarify the development of the long head of the biceps brachii tendon (LHBT) and to verify the existence and development of the coracoglenoid ligament. Histological preparations of 22 human embryos (7-8 weeks of development) and 43 human fetuses (9-12 weeks of development) were studied bilaterally using a conventional optical microscope. The articular interzone gives rise to the LHBT, glenoid labrum, and articular capsule. During the fetal period, it was observed that in 50 cases (58%), the LHBT originated from both the glenoid labrum and the scapula, while in 36 cases (42%), it originated only from the glenoid labrum. The coracoglenoid ligament, first described by Sappey in 1867, is a constant structure that originates at the base of the coracoid process and projects toward the glenoid labrum zone, which is related to the origin of the LHBT. The coracoglenoid ligament was more easily identifiable in the 36 cases in which the LHBT originated only from the glenoid labrum. We suggest that the coracoglenoid ligament is a constant anatomical structure, is not derived from the articular interzone unlike the LHBT, and contributes to the fixation of the glenoid labrum in the scapula in cases in which the LHBT originated only from the glenoid labrum. We postulate that, when the LHBT is fixed only at the glenoid labrum, alterations in the coracoglenoid ligament could lead to a less sufficient attachment of the glenoid labrum to the scapula which could predispose to a superior labral lesion. © 2017 S. Karger AG, Basel.

  4. [New arthroscopic portal for performing tenotomy/tenodesis procedures on the long head of the biceps brachii tendon].

    Science.gov (United States)

    Gutiérrez-de la O, Jorge; Espinosa-Uribe, Abraham Guadalupe; Morales-Avalos, Rodolfo; Vílchez-Cavazos, Félix; Elizondo-Omaña, Rodrigo Enrique; Guzmán-López, Santos

    2016-01-01

    Shoulder arthroscopy is the standard technique for performing procedures involving the intertubercular groove. Current techniques continue to produce excessive soft tissue manipulation and neurovascular injury. A cross-sectional, observational and descriptive study was conducted on a cohort of 24 shoulders following the standard surgical protocol and using punch dissection. The neurovascular structures with risk of damage by the standard lateral portal were evaluated during the study to establish a secure area for a new arthroscopic portal. Finally, the safety of the new proposed site was evaluated. The presence of 24 venous structures, with a mean diameter was 1.05mm (SD: 0.71) was documented. A tendency was observed in locating these structures in the lower half of the dissecting field for the left shoulders and a hypovascular area between the 7 and 10hours circle dissected relative to the right shoulder. The new site was determined at a point 1.5 cm anterolateral to the anterolateral border of the acromion at an angle of 60° degrees to the horizontal axis of the acromion and towards the intertubercular groove of the humerus. The methodology used in this study is innovative, reproducible and applicable for the study of all existing shoulder arthroscopic portals procedures, as well as any joint. The results provided by this study will be helpful for clinicians to improve tenotomy/tendon tenodesis procedures of the long head of the biceps brachii tendon. Copyright © 2015 Academia Mexicana de Cirugía A.C. Published by Masson Doyma México S.A. All rights reserved.

  5. Short-interval intracortical inhibition is not affected by varying visual feedback in an isometric task in biceps brachii muscle

    Directory of Open Access Journals (Sweden)

    Timo eRantalainen

    2013-03-01

    Full Text Available Short-interval intracortical inhibition (SICI of the primary motor cortex (M1 appears to play a significant role in skill acquisition. Consequently, it is of interest to find out which factors cause modulation of SICI. Purpose: To establish if visual feedback and force requirements influence SICI. Methods: SICI was assessed from 10 healthy adults (5 males and 5 females aged between 21 and 35 years in three submaximal isometric elbow flexion torque levels (5%, 20% and 40% of maximal voluntary contraction [MVC] and with two tasks differing in terms of visual feedback. Single-pulse and paired-pulse motor evoked potentials (MEPs, supramaximal M-wave and background surface electromyogram (sEMG were recorded from the biceps brachii muscle. Results: Repeated measures MANOVA was used for statistical analyses. Background sEMG did not differ between tasks (F = 0.4, P = 0.68 nor was task × torque level interaction observed (F = 1.2, P = 0.32, whereas background sEMG increased with increasing torque levels (P = 0.001. SICI did not differ between tasks (F = 0.9, P = 0.43 and no task × torque level interaction was observed (F = 2.3, P = 0.08. However, less SICI was observed at 40% MVC compared to the 5% and 20% MVC torque levels (P = 0.01 to 0.001. Conclusion: SICI was not altered by performing the same task with differing visual feedback. However, SICI decreased with increasing submaximal torque providing further evidence that SICI is one mechanism of modulating cortical excitability and plays a role in force gradation.

  6. Entrapment of Common Peroneal Nerve by Surgical Suture following Distal Biceps Femoris Tendon Repair

    Directory of Open Access Journals (Sweden)

    Aki Fukuda

    2016-01-01

    Full Text Available We describe entrapment of the common peroneal nerve by a suture after surgical repair of the distal biceps femoris tendon. Complete rupture of the distal biceps femoris tendon of a 16-year-old male athlete was surgically repaired. Postoperative common peroneal nerve palsy was evident, but conservative treatment did not cause any neurological improvement. Reexploration revealed that the common peroneal nerve was entrapped by the surgical suture. Complete removal of the suture and external neurolysis significantly improved the palsy. The common peroneal nerve is prone to damage as a result of its close proximity to the biceps femoris tendon and it should be identified during surgical repair of a ruptured distal biceps femoris tendon.

  7. [Contribution of the biceps brachii and pronator teres muscles to the efforts of pronation or supination. II. dynamic work (author's transl)].

    Science.gov (United States)

    van Hoecke, J; Pérot, C; Goubel, F

    1978-03-20

    The electrical activity of the biceps brachii and pronator teres muscles is studied through the prono-supination of the forearm in some anisometrical conditions (dynamic work) when the inertia of the mobile system and the elbow position are being varied. The subjects are required to perform pronation, supination and flexion movements, either isolated or combined. From the findings obtained when the integrated electrical activity (Q) is related to the mechanical work (W), one can conclude that a. the Q-W linear relationship seems to characterize the chief function of a muscle, b. the slope of the Q-W relationship depends on the elbow position, c. the pronator muscles do not inhibit in a selective manner the biceps supinating function. So a bifunctional muscle seems to act as a whole.

  8. Acute compartment syndrome of the forearm caused by calcific tendinitis of the distal biceps.

    Science.gov (United States)

    Garayoa, Santiago Amillo; Romero-Muñoz, Luis M; Pons-Villanueva, Juan

    2010-12-01

    Acute compartment syndrome of the forearm requires immediate treatment to avoid damage of the soft tissues and a poor functional outcome for the forearm. Muscular and bone lesions are the main causes of acute compartment syndromes. We report a case of acute compartment syndrome of the forearm caused by a calcific tendinitis of the distal biceps.

  9. Partial tears of the distal biceps tendon: MR appearance and associated clinical findings

    Energy Technology Data Exchange (ETDEWEB)

    Williams, B.D.; Schweitzer, M.E.; Weishaupt, D.; Miller, L.S. [Thomas Jefferson Univ., Philadelphia, PA (United States). Dept. of Radiology; Lerman, J. [Lerman Imaging, Brooklyn, NY (United States); Rubenstein, D.L. [Orthopaedic Surgery, Thomas Jefferson University Hospital, Philadelphia, PA (United States); Rosenberg, Z.S. [Dept. of Diagnostic Radiology, New York Univ. Medical Center, NY (United States)

    2001-10-01

    Purpose: To describe the magnetic resonance (MR) appearance and associated clinical findings of partial distal biceps tendon tears. Design: Twenty elbow MR images at 1.5 T, performed over a 7 year period, were reviewed for an appearance of partial tears in the distal biceps. These images were assessed by two musculoskeletal radiologists for the extent of: (a) abnormal signal intensity within the tendon, and the presence of (b) bicipitoradial bursitis, and (c) bony microavulsive injury of the radial tuberosity. Medical records for nine of the 20 cases were reviewed for the clinical findings of ecchymosis, trauma, sensation of a ''pop'', loss of function, and acuity of onset. Results: Twenty partial distal biceps tendon tears were seen. All displayed an abnormally increased signal in the distal biceps tendon. Three of 20 (15%) showed a 25% to 50% tear, ten of 20 (50%) showed a 50% tear, and seven of 20 (35%) showed a 75% to 90% tear. Bicipitoradial bursitis was seen in 11 of 20 (55%) cases. Bony microavulsive injury of the radial tuberosity was observed in 10 of 20 (50%). Of the nine cases reviewed for associated clinical findings, surprisingly, only three (33%) experienced an acute traumatic episode with an abrupt onset of pain. An insidious onset was reported in four of nine (44%). Sensation of a ''pop'' was recorded in only two of nine (22%) cases. Ecchymosis and loss of function were not seen in any of the cases. Finally, surgical conformation was obtained for three cases. Conclusion: Partial distal biceps tendon tears have a characteristic MR appearance, demonstrate little functional deficit, and may be attritional in their etiology due to the observation of a low number of patients reporting trauma or an acute onset. (orig.)

  10. The surface mechanomyogram as a tool to describe the influence of fatigue on biceps brachii motor unit activation strategy. Historical basis and novel evidence.

    Science.gov (United States)

    Orizio, Claudio; Gobbo, Massimiliano; Diemont, Bertrand; Esposito, Fabio; Veicsteinas, Arsenio

    2003-10-01

    The surface mechanomyogram (MMG) (detectable at the muscle surface as MMG by accelerometers, piezoelectric contact sensors or other transducers) is the summation of the activity of single motor units (MUs). Each MU contribution is related to the pressure waves generated by the active muscle fibres. The first part of this article will review briefly the results obtained by our group studying the possible role of motor unit recruitment and firing rate in determining the characteristics of the MMG during stimulated and voluntary contractions. The second part of this article will study the MMG and EMG during a short isometric force ramp from 0 to 90% of the maximal voluntary contraction (MVC) in fresh and fatigued biceps brachii. The aim is to verify whether changes in motor unit activation strategy in voluntarily fatigued muscle could be specifically reflected in the time and frequency domain parameters of the MMG. MMG-RMS vs. %MVC: at fatigue the MMG-RMS did not present the well known increment, when effort level increases, followed by a clear decrement at near-maximal contraction levels. MMG-MF vs. %MVC: compared to fresh muscle the fatigued biceps brachii showed an MF trend significantly shifted towards lower values and the steeper MF increment, from 65 to 85% MVC, was not present. The alteration in the MMG and EMG parameters vs. %MVC relationships at fatigue seems to be related to the impossibility of recruiting fast, but more fatigable MUs, and to the lowering of the global MUs firing during the short isometric force ramp investigated.

  11. Differences in supraspinal and spinal excitability during various force outputs of the biceps brachii in chronic- and non-resistance trained individuals.

    Directory of Open Access Journals (Sweden)

    Gregory E P Pearcey

    Full Text Available Motor evoked potentials (MEP and cervicomedullary evoked potentials (CMEP may help determine the corticospinal adaptations underlying chronic resistance training-induced increases in voluntary force production. The purpose of the study was to determine the effect of chronic resistance training on corticospinal excitability (CE of the biceps brachii during elbow flexion contractions at various intensities and the CNS site (i.e. supraspinal or spinal predominantly responsible for any training-induced differences in CE. Fifteen male subjects were divided into two groups: 1 chronic resistance-trained (RT, (n = 8 and 2 non-RT, (n = 7. Each group performed four sets of ∼5 s elbow flexion contractions of the dominant arm at 10 target forces (from 10%-100% MVC. During each contraction, subjects received 1 transcranial magnetic stimulation, 2 transmastoid electrical stimulation and 3 brachial plexus electrical stimulation, to determine MEP, CMEP and compound muscle action potential (Mmax amplitudes, respectively, of the biceps brachii. All MEP and CMEP amplitudes were normalized to Mmax. MEP amplitudes were similar in both groups up to 50% MVC, however, beyond 50% MVC, MEP amplitudes were lower in the chronic RT group (p<0.05. CMEP amplitudes recorded from 10-100% MVC were similar for both groups. The ratio of MEP amplitude/absolute force and CMEP amplitude/absolute force were reduced (p<0.012 at all contraction intensities from 10-100% MVC in the chronic-RT compared to the non-RT group. In conclusion, chronic resistance training alters supraspinal and spinal excitability. However, adaptations in the spinal cord (i.e. motoneurone seem to have a greater influence on the altered CE.

  12. Use of a Bicortical Button to Safely Repair the Distal Biceps in a Two-Incision Approach: A Cadaveric Analysis.

    Science.gov (United States)

    Barlow, Jonathan D; McNeilan, Ryan J; Speeckaert, Amy; Beals, Corey T; Awan, Hisham M

    2017-07-01

    No consensus has been reached on the most effective anatomic approach or fixation method for distal biceps repair. It is our hypothesis that, using a cortical biceps button through a 2-incision technique, the distal biceps can be safely and anatomically repaired. A 2-incision biceps button distal biceps repair was completed on 10 fresh-frozen cadavers. The proximity of the guide pin to the critical structures of the forearm, including the posterior interosseous nerve and recurrent radial artery, was measured. The location of repair was mapped and compared with anatomic insertion. The average distance from the tip of the guide pin to the posterior interosseous nerve was 11.4 mm (range, 8-14 mm). The average distance from the tip of the guide pin to the recurrent radial artery was 12.5 mm (range, 8-19 mm). The distal biceps tendon was repaired to the anatomic insertion site on the tuberosity using the biceps button technique in all specimens. The 2-incision biceps button repair described here allows safe and accurate repair of the tendon to the radial tuberosity in this cadaveric study. The goal of distal biceps repair is to safely, securely, and anatomically repair the torn biceps tendon to the radial tuberosity. The most commonly performed techniques (single anterior incision with cortical button and the double-incision procedure with bone tunnels and trough) have limitations. A 2-incision button repair safely and anatomically repairs the distal biceps tendon. Copyright © 2017 American Society for Surgery of the Hand. Published by Elsevier Inc. All rights reserved.

  13. Differences in corticospinal excitability to the biceps brachii between arm cycling and tonic contraction are not evident at the immediate onset of movement.

    Science.gov (United States)

    Forman, Davis A; Philpott, Devin T G; Button, Duane C; Power, Kevin E

    2016-08-01

    This is the first study to examine changes in corticospinal excitability to the biceps brachii during the onset of arm cycling from a resting position to a point when steady-state arm cycling was obtained. Supraspinal and spinal excitability were assessed using motor-evoked potentials (MEPs) elicited via transcranial magnetic stimulation and cervicomedullary evoked potentials (CMEPs) elicited via transmastoid electrical stimulation, respectively. Evoked responses were recorded from the biceps brachii during elbow flexion (6 o'clock relative to a clock face) for both arm cycling and an intensity-matched tonic contraction at three separate periods: (1) immediately at the onset of motor output and after completion of the (2) 4th revolution and (3) 9th revolution. There was no difference during initiation between tasks for MEP (P = 0.79) or CMEP amplitudes (P = 0.57). However, MEP amplitudes were significantly larger during arm cycling than an intensity-matched tonic contraction after the completion of the 4th (Cycling 76.48 ± 17.35 % of M max, Tonic 63.45 ± 18.45 % of M max, P Cycling 72.37 ± 15.96 % of M max, Tonic 58.1 ± 24.23 % of M max, P Cycling 49.6 ± 25.4 % of M max, Tonic 41.6 ± 11.2 % of M max, P = 0.31) or the 9th revolution (Cycling 47.2 ± 17.0 % of M max, Tonic 40.8 ± 13.6 % of M max, P = 0.29). These results demonstrate that corticospinal excitability is not different between arm cycling and a tonic contraction at motor output onset, but supraspinal excitability is enhanced during steady-state arm cycling. This suggests a similarity in the way the corticospinal tract initiates motor outputs in humans, regardless of the differences that present themselves in the later, steady-state stages.

  14. The anatomy of the short head of biceps - not a tendon

    Directory of Open Access Journals (Sweden)

    Crichton James

    2009-01-01

    Full Text Available Background: The short head of biceps brachii has been the subject of little investigation when compared to the long head or distal biceps tendons. The aim of this study was to dissect and describe the origin and proximal portion of the short head of biceps brachii. Materials and Methods: Three left and two right (n = 5 fresh-frozen human cadaver shoulders were dissected and the proximal short head was measured and photographed. Results: The origin of the short head of biceps consisted of muscle fibres attaching directly to the tip of the coracoid process, with a thin, tendinous aponeurosis covering its anterior surface, rather than a true tendon as previously described. Conclusion: The short head of biceps does not attach to the coracoid process via a true tendon. These findings have implications for procedures that utilise the short head of biceps. Level of Evidence: Basic science study.

  15. Analyzing the influence of curl speed in fatiguing biceps brachii muscles using sEMG signals and multifractal detrended moving average algorithm.

    Science.gov (United States)

    Marri, Kiran; Swaminathan, Ramakrishnan

    2016-08-01

    In this work, an attempt has been made to analyze surface electromyography (sEMG) signals of fatiguing biceps brachii muscles at different curl speeds using multifractal detrended moving average (MFDMA) algorithm. For this purpose, signals are recorded from fifty eight healthy subjects while performing curl exercise at their comfortable speed until fatigue. The signals of first and last curls are considered as nonfatigue and fatigue conditions, respectively. Further, the number of curls performed by each subject and the endurance time is used for computing the normalized curl speed. The signals are grouped into fast, medium and slow using curl speeds. The curl segments are subjected to MFDMA to derive degree of multifractality (DOM), maximum singularity exponent (MXE) and exponent length multifractality index (EMX). The results show that multifractal features are able to differentiate sEMG signals in fatiguing conditions. The multifractality increased with faster curls as compared with slower curl speed by 12%. High statistical significance is observed using EMX and DOM values between curl speed and fatigue conditions. It appears that this method of analyzing sEMG signals with curl speed can be useful in understanding muscle dynamics in varied neuromuscular conditions and sports medicine.

  16. The Effects of Positive and Negative Feedback on Maximal Voluntary Contraction Level of the Biceps Brachii Muscle: Moderating Roles of Gender and Conscientiousness.

    Science.gov (United States)

    Sarıkabak, Murat; Yaman, Çetin; Tok, Serdar; Binboga, Erdal

    2016-11-02

    We investigated the effect of positive and negative feedback on maximal voluntary contraction (MVC) of the biceps brachii muscle and explored the mediating effects of gender and conscientiousness. During elbow flexion, MVCs were measured in positive, negative, and no-feedback conditions. Participants were divided into high- and low-conscientiousness groups based on the median split of their scores on Tatar's five-factor personality inventory. Considering all participants 46 college student athletes (21 female, 28 male), positive feedback led to a greater MVC percentage change (-5.76%) than did negative feedback (2.2%). MVC percentage change in the positive feedback condition differed significantly by gender, but the negative feedback condition did not. Thus, positive feedback increased female athletes' MVC level by 3.49%, but decreased male athletes' MVC level by 15.6%. For conscientiousness, MVC percentage change in the positive feedback condition did not differ according to high and low conscientiousness. However, conscientiousness interacted with gender in the positive feedback condition, increasing MVC in high-conscientiousness female athletes and decreasing MVC in low-conscientiousness female athletes. Positive feedback decreased MVC in both high- and low-conscientiousness male athletes.

  17. Effects of Extracorporeal Shock Wave on Spasticity of Biceps Brachii after Stroke%体外冲击波缓解脑卒中后肱二头肌痉挛的效果

    Institute of Scientific and Technical Information of China (English)

    徐思维; 缪芸; 郁嫣嫣; 瞿强; 陈文华

    2014-01-01

    目的:观察体外冲击波对脑卒中后肱二头肌痉挛的治疗效果。方法12例脑卒中后肱二头肌痉挛患者分成对照组(n=6)和治疗组(n=6)。治疗组予单次体外冲击波治疗,对照组予安慰性治疗。两组患者在治疗前、治疗后即刻采用改良Ashworth量表(MAS)、上肢肩肘部分Fugl-Meyer评分(FMA)进行评定,表面肌电图测定肘伸展最大等长收缩时肱二头肌、肱三头肌的积分肌电值及协同收缩率。结果治疗组治疗后MAS、FMA评分,肱二头肌积分肌电值及协同收缩率均较治疗前改善(P<0.05),并优于对照组(P<0.05)。结论体外冲击波可以即刻缓解脑卒中后肱二头肌痉挛,降低肘伸展时肱二头肌的协同激活水平及协同收缩率,改善上肢运动功能。%Objective To observe the effects of extracorporeal shock wave therapy (ESWT) on spasticity of biceps brachii after stroke. Methods 12 patients with spasticity of biceps brachii after stroke were divided into control group (n=6) and ESWT group (n=6). The ESWT group received a session of ESWT and the control group received placebo treatment. All patients were assessed before and immediately after treatment, including integrated electromyogram (iEMG) and co-contraction ratio during maximum isometric voluntary contraction (MIVC) of elbow extension with surface electromyography, the modified Ashworth Scale (MAS) and content of shoulder and elbow of Fugl-Meyer Assessment (FMA). Results The scores of MAS and FMA, the iEMG and the cocontraction ratio of biceps brachii improved in the ESWT group after the treatment (P<0.05), and improved more than those in the control group (P<0.05). Conclusion ESWT can immediately re-lieve the spasticity of biceps brachii, inhibit the cocontraction of biceps brachii during elbow extension and improve the motor function of upper limb in patients post stroke.

  18. Ultrasonographic Validation of Anatomical Landmarks for Localization of the Tendon of the Long Head of Biceps Brachii

    Science.gov (United States)

    Hou, Saiyun; Harrell, John

    2017-01-01

    Objectives. To establish anatomical landmarks for biceps tendon groove localization based on intrinsic anatomical relations and to validate the localization with ultrasonographic measurement. Design. Perspective, observational, single-blinded pilot study. Participants. 25 healthy male and female volunteers ages 24–50 years. Methods. We used two anatomical landmarks, the medial epicondyle vertical line related landmark and the coracoid process landmark. The distance from the groove skin mark to the medial epicondyle vertical line and the coracoid process was measured horizontally and was measured at 0° and 45° of shoulder external rotation, respectively. Results. Medial epicondyle vertical lines were 9.3 mm/21.5 mm medial to the groove at 0°/45° of shoulder external rotation, respectively. Correlation coefficients were 0.04/0.10, 0.32/0.42, and 0.26/0.37 for weight, height, and BMI in 0°/45° of shoulder external rotation, respectively. The distance between the coracoid process and the groove was 44.0 mm/62.2 mm in 0°/45° of shoulder external rotation, respectively. Correlation coefficients were 0.36/0.41, 0.36/0.54, and 0.18/0.12 for weight, height, and BMI in 0°/45° of shoulder external rotation, respectively. Conclusions. The medial epicondyle vertical line and the coracoid process landmark are both useful anatomical landmarks to localize the biceps groove. The anatomical landmark based localization is essentially not correlated with subject's weight, height, or BMI.

  19. Rupture of the Distal Biceps Tendon Combined with a Supinator Muscle Tear in a 51-Year-Old Woman: A Case Report

    OpenAIRE

    Samir Nayyar; Martin Quirno; Saqib Hasan; Leon Rybak; Meislin, Robert J.

    2011-01-01

    Distal biceps tendon rupture is a relatively uncommon occurrence in the general female population, and to our knowledge, has not been reported in association with a supinator muscle tear. We report a case of 51-year-old woman who experienced sharp pain in her forearm and elbow after lifting a heavy object. History and physical examination raised suspicion for a distal biceps tendon rupture. MRI imaging determined a combined distal biceps tendon tear with a supinator muscle tear with subsequen...

  20. Dynamometer Elbow Strength and Endurance Testing After Distal Biceps Reconstruction w/Allograft

    Science.gov (United States)

    McGee, Alan; Strauss, Eric Jason; Jazrawi, Laith M.

    2015-01-01

    Objectives: The purpose of the current study is to investigate the functional strength outcomes of late distal biceps reconstruction using allograft tissue. Methods: Patients who underwent distal biceps reconstruction with allograft tissue between May 2007 and May 2013 were identified. Charts were retrospectively reviewed for post-operative complications, gross flexion and supination strength, and range of motion (ROM). Isokinetic strength and endurance in elbow flexion and forearm supination were measured in both arms. Tests were conducted using a dynamometer at 60o per second for isokinetic strength and 240o per second for endurance. Isometric strength testing was also measured for elbow flexion and forearm supination. Paired t tests were used for statistical analysis. Results: Ten patients with a mean age of 48 years (range 42 - 61 years) were included in the study. Distal biceps reconstruction was performed using an Achilles tendon allograft in 9 patients and a combination of tibialis anterior allograft and gracilis allograft in 1 patient. Of the reconstructions, 50% involved the dominant arm. Full ROM was observed in all patients at the time of their final follow up assessment. The mean follow-up for dynamometer strength testing was 34 months (range 13-81 months). No statistical differences were noted between data obtained from operative and contralateral extremities. The average peak torque of the operative limb (38.5± 5.9 Nm) was 91.7% of that of the contralateral limb (41.8±4.9 Nm) in flexion and 93.4% (operative, 5.7±1.3 Nm; contralateral, 6.1± 1.0 Nm) in supination. No significant differences were found in fatigue index between operative or contralateral limbs for flexion (operative, 34.1±17.1%; contralateral, 30.8±17.1%; p = 0.29) or supination (operative, 38.2±16.5%; contralateral, 42.1±11.9%; p = 0.65). . The only complication observed was a transient PIN palsy in one patient which resolved by 3 months post-operatively. All patients reported

  1. Rupture of the Distal Biceps Tendon Combined with a Supinator Muscle Tear in a 51-Year-Old Woman: A Case Report

    Directory of Open Access Journals (Sweden)

    Samir Nayyar

    2011-01-01

    Full Text Available Distal biceps tendon rupture is a relatively uncommon occurrence in the general female population, and to our knowledge, has not been reported in association with a supinator muscle tear. We report a case of 51-year-old woman who experienced sharp pain in her forearm and elbow after lifting a heavy object. History and physical examination raised suspicion for a distal biceps tendon rupture. MRI imaging determined a combined distal biceps tendon tear with a supinator muscle tear with subsequent confirmation at surgery. Surgical repair was performed for the distal biceps tendon only through a single incision approach using the Endobutton technique.

  2. Radiological and Clinical Evaluation of the Transosseous Cortical Button Technique in Distal Biceps Tendon Repair.

    Science.gov (United States)

    Caekebeke, Pieter; Vermeersch, Nicolas; Duerinckx, Joris; van Riet, Roger

    2016-12-01

    One of the options to repair a ruptured distal biceps tendon to the radial tuberosity is by means of a transosseous cortical button. Although excellent functional outcomes have been reported, no studies have been performed to quantify the effect of the transosseous fixation technique on the radius. Our study evaluated the clinical outcome and radiological outcome of this technique. The main goal of this study was to evaluate the radiographic evolution of the bone tunnel in the radius. Patients with an acute distal biceps tendon rupture treated with a transosseous cortical button were invited to take part in the study. Fourteen patients were included in the final analysis. All patients were evaluated both clinically and by computed tomography scanning of the proximal radius after a minimum follow-up of 2 years. Outcomes were recorded using the visual analog scale score for pain, the Mayo Elbow Performance Score, and Disabilities of the Arm, Shoulder, and Hand scores. Bone tunnel volume was measured with semiautomated computed tomography segmentation using image-processing software. There were no failures of fixation in the patient group examined. Elbow mobility, arm, and forearm circumference were symmetric for all patients. Average visual analog scale for pain was less than 2. Mean Disabilities of the Arm, Shoulder, and Hand score and Mayo Elbow Performance Score were 2.3 and 97.6, respectively. Computed tomography images showed an average closure of the radial bony tunnel of 64% of the initial volume. Biceps tendon repair with cortical button fixation only shows partial tunnel closure. This could reduce the risk of potential complications due to osteolysis, such as radius fracture or hardware failure. Functional results were excellent and comparable to other fixation methods. The role of interference screws in transosseous cortical button techniques to strengthen the repair and to avoid osteolysis may therefore be questioned. Therapeutic IV. Copyright © 2016

  3. Reassessment of Non-Monosynaptic Excitation from the Motor Cortex to Motoneurons in Single Motor Units of the Human Biceps Brachii.

    Science.gov (United States)

    Nakajima, Tsuyoshi; Tazoe, Toshiki; Sakamoto, Masanori; Endoh, Takashi; Shibuya, Satoshi; Elias, Leonardo A; Mezzarane, Rinaldo A; Komiyama, Tomoyoshi; Ohki, Yukari

    2017-01-01

    Corticospinal excitation is mediated by polysynaptic pathways in several vertebrates, including dexterous monkeys. However, indirect non-monosynaptic excitation has not been clearly observed following transcranial electrical stimulation (TES) or cervicomedullary stimulation (CMS) in humans. The present study evaluated indirect motor pathways in normal human subjects by recording the activities of single motor units (MUs) in the biceps brachii (BB) muscle. The pyramidal tract was stimulated with weak TES, CMS, and transcranial magnetic stimulation (TMS) contralateral to the recording side. During tasks involving weak co-contraction of the BB and hand muscles, all stimulation methods activated MUs with short latencies. Peristimulus time histograms (PSTHs) showed that responses with similar durations were induced by TES (1.9 ± 1.4 ms) and CMS (2.0 ± 1.4 ms), and these responses often showed multiple peaks with the PSTH peak having a long duration (65.3% and 44.9%, respectively). Such long-duration excitatory responses with multiple peaks were rarely observed in the finger muscles following TES or in the BB following stimulation of the Ia fibers. The responses obtained with TES were compared in the same 14 BB MUs during the co-contraction and isolated BB contraction tasks. Eleven and three units, respectively, exhibited activation with multiple peaks during the two tasks. In order to determine the dispersion effects on the axon conduction velocities (CVs) and synaptic noise, a simulation study that was comparable to the TES experiments was performed with a biologically plausible neuromuscular model. When the model included the monosynaptic-pyramidal tract, multiple peaks were obtained in about 34.5% of the motoneurons (MNs). The experimental and simulation results indicated the existence of task-dependent disparate inputs from the pyramidal tract to the MNs of the upper limb. These results suggested that intercalated interneurons are present in the spinal cord and

  4. Evaluation of the results from arthroscopic tenodesis of the long head of the biceps brachii on the tendon of the subscapularis muscle

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    Marcelo Baggio

    2016-04-01

    Full Text Available OBJECTIVES: The aim of this study was to evaluate the results from arthroscopic tenodesis of the long head of the biceps brachii (LHBB on the tendon of the subscapularis muscle, with regard to the presence of pain, subscapularis lesion, presence of Popeye's sign and patient satisfaction. METHODS: A prospective cohort study was conducted on 32 patients with LHBB lesions, through preoperative interviews and physical examinations, which were repeated six months after the operation. The main variables studied were the belly press, bear hug and lift-off tests, Popeye's sign, anterior pain and satisfaction. The data were entered into Epi Info 3.5.4 and SPSS 18.0. In order to investigate the variables of interest, the chi-square, Student t and Kruskal-Wallis tests were used. The confidence interval was 95% and p values less than 0.05 were taken to be statistically significant. RESULTS: 32 patients of median age 57.5 years were evaluated. Anterior pain was reported by one interviewee after the operation. The tests for evaluating subscapularis lesions did not show any damage to this musculature after the surgery. Popeye's sign was negative in all the patients. The patient satisfaction rate reached 90.6% of the interviewees. CONCLUSION: This study showed that the new surgical technique described here presented excellent performance, without any subscapularis lesion and without identifying Popeye's sign. Only 3.1% of the patients had complaints of residual pain. The high level of satisfaction among the patients after the surgery confirms the results presented.

  5. Reassessment of Non-Monosynaptic Excitation from the Motor Cortex to Motoneurons in Single Motor Units of the Human Biceps Brachii

    Science.gov (United States)

    Nakajima, Tsuyoshi; Tazoe, Toshiki; Sakamoto, Masanori; Endoh, Takashi; Shibuya, Satoshi; Elias, Leonardo A.; Mezzarane, Rinaldo A.; Komiyama, Tomoyoshi; Ohki, Yukari

    2017-01-01

    Corticospinal excitation is mediated by polysynaptic pathways in several vertebrates, including dexterous monkeys. However, indirect non-monosynaptic excitation has not been clearly observed following transcranial electrical stimulation (TES) or cervicomedullary stimulation (CMS) in humans. The present study evaluated indirect motor pathways in normal human subjects by recording the activities of single motor units (MUs) in the biceps brachii (BB) muscle. The pyramidal tract was stimulated with weak TES, CMS, and transcranial magnetic stimulation (TMS) contralateral to the recording side. During tasks involving weak co-contraction of the BB and hand muscles, all stimulation methods activated MUs with short latencies. Peristimulus time histograms (PSTHs) showed that responses with similar durations were induced by TES (1.9 ± 1.4 ms) and CMS (2.0 ± 1.4 ms), and these responses often showed multiple peaks with the PSTH peak having a long duration (65.3% and 44.9%, respectively). Such long-duration excitatory responses with multiple peaks were rarely observed in the finger muscles following TES or in the BB following stimulation of the Ia fibers. The responses obtained with TES were compared in the same 14 BB MUs during the co-contraction and isolated BB contraction tasks. Eleven and three units, respectively, exhibited activation with multiple peaks during the two tasks. In order to determine the dispersion effects on the axon conduction velocities (CVs) and synaptic noise, a simulation study that was comparable to the TES experiments was performed with a biologically plausible neuromuscular model. When the model included the monosynaptic-pyramidal tract, multiple peaks were obtained in about 34.5% of the motoneurons (MNs). The experimental and simulation results indicated the existence of task-dependent disparate inputs from the pyramidal tract to the MNs of the upper limb. These results suggested that intercalated interneurons are present in the spinal cord and

  6. Evaluation of the results from arthroscopic tenodesis of the long head of the biceps brachii on the tendon of the subscapularis muscle☆

    Science.gov (United States)

    Baggio, Marcelo; Martinelli, Fabrício; Netto, Martins Back; Martins, Rafael Olívio; da Cunha, Romilton Crozetta; Stipp, Willian Nandi

    2016-01-01

    Objectives The aim of this study was to evaluate the results from arthroscopic tenodesis of the long head of the biceps brachii (LHBB) on the tendon of the subscapularis muscle, with regard to the presence of pain, subscapularis lesion, presence of Popeye's sign and patient satisfaction. Methods A prospective cohort study was conducted on 32 patients with LHBB lesions, through preoperative interviews and physical examinations, which were repeated six months after the operation. The main variables studied were the belly press, bear hug and lift-off tests, Popeye's sign, anterior pain and satisfaction. The data were entered into Epi Info 3.5.4 and SPSS 18.0. In order to investigate the variables of interest, the chi-square, Student t and Kruskal–Wallis tests were used. The confidence interval was 95% and p values less than 0.05 were taken to be statistically significant. Results 32 patients of median age 57.5 years were evaluated. Anterior pain was reported by one interviewee after the operation. The tests for evaluating subscapularis lesions did not show any damage to this musculature after the surgery. Popeye's sign was negative in all the patients. The patient satisfaction rate reached 90.6% of the interviewees. Conclusion This study showed that the new surgical technique described here presented excellent performance, without any subscapularis lesion and without identifying Popeye's sign. Only 3.1% of the patients had complaints of residual pain. The high level of satisfaction among the patients after the surgery confirms the results presented. PMID:27069883

  7. Effects of Pre-Exhausting the Biceps Brachii Muscle on the Performance of the Front Lat Pull-Down Exercise Using Different Handgrip Positions

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    Vilaça-Alves José

    2014-10-01

    Full Text Available The aim of the present study was to investigate the effects of pre-exhaustion (PE of the biceps brachii muscle (BB on the number of repetitions and the rate of perceived exertion (RPE in the front lat pull-down (FLPD using different handgrip positions. Additionally, the effect of sex and its interaction with performance and the RPE were also examined. The participants were 19 healthy subjects: 8 men (age: 27.13±2.85 years; body height: 180.63±6.65 cm; body mass: 82.05±8.92 kg; and body fat: 14.67±6.09%; and 11 women (age: 28.81±3.68 years; body height: 162.91±6.51 cm; body mass 59.63±6.47 kg; and body fat: 24.11±4.33%. The number of repetitions and the RPE in the FLPD exercise with different handgrip positions, with and without PE of the BB, was documented. The following main significant effects were seen: i PE of the BB decreased the number of repetitions (p<0.001 and increased the RPE (p<0.001; ii the narrow handgrip width elicited a higher RPE (p<0.001 and iii women performed fewer repetitions than men in all FLPD exercise variations (p=0.023. Significant interactions were also observed between: i PE or sex and the RPE (p=0.024; and ii PE or handgrip width and the number of repetitions (p<0.001. In conclusion, PE of the BB promotes a decreased performance in the FLPD exercise along with a greater RPE, especially when using a narrow handgrip position

  8. Complications from a Distal Bicep Repair: A Meta-Analysis of a Single Incision Versus Double Incision Surgical Technique

    OpenAIRE

    Toossi, Nader; Amin, Nirav Hasmukh; Cerynik, Douglas L.; Jones, Morgan H.

    2014-01-01

    Objectives: Anatomical reinsertion of the distal biceps is critical for restoring elbow flexion and forearm supination strength. Surgical techniques utilizing one and two incisions have been reported in the literature, describing complications and outcomes. However, which technique is associated with a lower complication rate remains unclear. Methods: A systematic review was conducted using the PubMed, Medline, CINAHL (Cumulative Index to Nursing and Allied Health Literature), SPORTSDiscus, a...

  9. Biomechanical in vitro validation of intramedullary cortical button fixation for distal biceps tendon repair: a new technique.

    Science.gov (United States)

    Siebenlist, Sebastian; Lenich, Andreas; Buchholz, Arne; Martetschläger, Frank; Eichhorn, Stefan; Heinrich, Petra; Fingerle, Alexander; Doebele, Stefan; Sandmann, Gunther H; Millett, Peter J; Stöckle, Ulrich; Elser, Florian

    2011-08-01

    Extramedullary cortical button-based fixation for distal biceps tendon ruptures exhibits maximum load to failure in vitro but cannot restore the anatomic footprint and has the potential risk for injury to the posterior interosseous nerve. Double intramedullary cortical button fixation repair provides superior fixation strength to the bone when compared with single extramedullary cortical button-based repair. Controlled laboratory study. The technique of intramedullary cortical button fixation with 1 or 2 buttons was compared with single extramedullary cortical button-based repair using 12 paired human cadaveric elbows. All specimens underwent computed tomography analysis to determine intramedullary dimensions of the radial tuberosity as well as the thickness of the anterior and posterior cortices before biomechanical testing. Maximum load to failure and failure modes were recorded. For baseline measurements, the native tendon was tested for maximum load to failure. The intramedullary area of the radial tuberosity provides sufficient space for single or double intramedullary cortical button implantation. The mean thickness of the anterior cortex was 1.13 ± 0.15 mm, and for the posterior cortex it was 1.97 ± 0.48 mm (P button fixation with a mean load to failure of 455 ± 103 N, versus 275 ± 44 N for single intramedullary cortical button fixation (P button-based technique (P = .003). There were no statistically significant differences between single intramedullary and single extramedullary button fixation repair (P = .081). The mean load to failure for the native tendon was 379 ± 87 N. Double intramedullary cortical button fixation provides the highest load to failure in the specimens tested. Double intramedullary cortical button fixation provides reliable fixation strength to the bone for distal biceps tendon repair and potentially minimizes the risk of posterior interosseous nerve injury. Further, based on a 2-point-fixation, this method may offer a wider, more

  10. Biceps tendinitis in chronic rotator cuff tears: a histologic perspective.

    Science.gov (United States)

    Singaraju, Vamsi M; Kang, Richard W; Yanke, Adam B; McNickle, Allison G; Lewis, Paul B; Wang, Vincent M; Williams, James M; Chubinskaya, Susan; Romeo, Anthony A; Cole, Brian J

    2008-01-01

    Patients with chronic rotator cuff tears frequently have anterior shoulder pain attributed to the long head of the biceps brachii (LHBB) tendon. In this study, tenodesis or tenotomy samples and cadaveric controls were assessed by use of immunohistochemical and histologic methods to quantify inflammation, vascularity, and neuronal plasticity. Patients had moderate pain and positive results on at least 1 clinical test of shoulder function. The number of axons in the distal LHBB was significantly less in patients with biceps tendinitis. Calcitonin gene-related peptide and substance P immunostaining was predominantly within nerve roots and blood vessels. A moderate correlation (R = 0.5) was identified between LHBB vascularity and pain scores. On the basis of these results, we conclude that, in the context of rotator cuff disease, the etiology of anterior shoulder pain with macroscopic changes in the biceps tendon is related to the complex interaction of the tendon and surrounding soft tissues, rather than a single entity.

  11. A rare variation of the biceps brachi muscle

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    Paval J

    2006-01-01

    Full Text Available Biceps brachii muscle is very variable. Biceps may be composed of one to five heads. Although the variations in the origin are plenty, there are a very few cases reported on the variations in the insertion of the biceps brachii muscle. In this report we present a variant biceps brachii muscle which gives an abnormal muscle fasciculus from its medial side which continues as a narrow tendinous slip and is inserted in to the medial supracondylar ridge of humerus. We discuss in this report, the possible median nerve entrapment due to the presence of such a variation.

  12. A influência da mobilização articular nas tendinopatias dos músculos bíceps braquial e supra-espinal The influence of joint mobilization on tendinopathy of the biceps brachii and supraspinatus muscles

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    RI Barbosa

    2008-08-01

    Full Text Available As causas mais comuns de dor no ombro estão relacionadas às degenerações dos tendões da musculatura do manguito rotador. OBJETIVO: Verificar a influência da mobilização articular por meio dos movimentos acessórios do ombro na recuperação inicial de 14 pacientes com tendinopatia crônica dos mm. supra-espinal e/ou bíceps braquial. MÉTODOS: Foram comparados dois protocolos de tratamento, compostos da aplicação de ultra-som terapêutico na área do tendão afetado e de treinamento excêntrico na musculatura envolvida, acompanhados ou não de manobras de mobilização articular. Como métodos de avaliação foram utilizados os questionários de Constant e Disabilities of the Arm, Shoulder and Hand (DASH, no início e ao final do tratamento. RESULTADOS: Os resultados encontrados demonstraram que ambos os protocolos de tratamento foram eficazes na reabilitação dos pacientes, pois se obtiveram melhores resultados funcionais na aplicação dos questionários quando comparados o final com o início do tratamento para os pacientes (pThe most common causes of shoulder pain are related to degeneration of the tendons of the rotator cuff muscles. OBJECTIVE: To investigate the influence of joint mobilization by means of accessory movements of the shoulder during the early rehabilitation of 14 patients with chronic tendinopathy of the supraspinatus and/or biceps brachii muscles. METHODS: Two treatment protocols were compared: application of therapeutic ultrasound over the affected tendon area and eccentric training of the musculature involved, with or without joint mobilization maneuvers. The Constant and DASH (Disabilities of the Arm, Shoulder and Hand questionnaires were used as the assessment method, before and after the treatment. RESULTS: The results showed that both treatment protocols were effective for patient rehabilitation, since better functional results were obtained at the end of the treatment, in comparison with the beginning (p<0

  13. Quantitative measurement of the elastic modulus of the biceps brachii during muscle relaxation and tension by shear-wave elasto-sonography%实时定量超声弹性成像技术检测肱二头肌松弛和紧张状态下弹性模量值差异

    Institute of Scientific and Technical Information of China (English)

    温朝阳; 范春芝; 安力春; 徐建红; 陈浩; 王月香; 唐杰

    2011-01-01

    Objective To explore the difference of Young' s modulus in the biceps brachii during muscle relaxation and tension. Methods A total of 141 healthy male volunteers with age range from 16 to 34 years ( mean 22 years old ) were included in the study. A shear-wave elasto-sonography ( AixPlorer model, Supersonic Imagine,Aix en Provence, France ) coupled with a linear array transducer array ( 4-15 MHz )was used. The scanner was set at the SWE mode and then at Q-BOX mode and the ultrasound transducer was placed directly above the biceps brachii belly and carefully aligned with the muscle bundle. The elastic moduli of the biceps brachii were measured during muscle relaxation and tension in all 141 volunteers. Results The Young ' s modulus of biceps brachii was 123. 658 ± 31. 392 kPa during muscle tension and 45. 658 ± 13. 479 kPa during muscle relaxation, respectively with statistical significance ( P =0. 0000 ), Conclusion The Young' s modulus of the biceps brachii was higher during muscle tension than those during muscle relaxation.%目的 研究松弛和紧张状态下肱二头肌肌腹的杨氏模量值差异.方法 141例男性健康志愿者,年龄16~34岁, 中位年龄22岁.使用法国Supersonic 公司的AixPlore型实时定量剪切波弹性成像超声诊断仪,L4-15线阵探头沿肱二头肌肌腹肌束方向检查,启动超声仪器弹性成像模式(SWE)模式,然后使用其定量分析系统Q-BOX分别测量二头肌处于松弛与紧张状态下的杨氏模量值.结果 紧张状态下肱二头肌肌腹杨氏模量值为(123.658±31.392) kPa,松弛状态下杨氏模量值为(45.658±13.479) kPa,两者比较差异具有统计学意义(P=0.0000).结论 剪切波弹性成像技术可检测肱二头肌肌腹在松弛和紧张状态下杨氏模量值差异,紧张状态下较松弛状态下模量值大;定量超声弹性成像技术用于肌肉组织疾病检查,使提供常规超声之外的诊断信息成为可能.

  14. Resultados e técnica da reparação do tendão bicipital distal através de duas mini-incisões anteriores Technique and results after distal braquial biceps tendon reparation, through two anterior mini-incisions

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    Luciano Pascarelli

    2013-04-01

    Full Text Available OBJETIVO: Avaliação do resultado pós-operatório da ruptura do bíceps distal após emprego da técnica cirúrgica através de duas mini-incisões anteriores. MÉTODOS: Foram operados, através de uma técnica cirúrgica de duas mini-incisões, nove pacientes com diagnóstico clínico e por imagem (ressonância nuclear magnética de lesão total do bíceps braquial na região insercional entre 2008 e 2011. Os pacientes foram avaliados com três meses de evolução e todos recuperaram a flexão e extensão totalmente. RESULTADOS: Em dois pacientes (22,2% houve uma limitação da supinação em 20 graus. Em um paciente (11,1% houve praxia do nervo radial que durou por um período de cinco meses, porém com recuperação total. Houve uma diminuição da força em todos os pacientes. Em um paciente (11,1% o músculo do bíceps se manteve retraído, mas a inserção estava refeita. Em três pacientes (33,3% foi observada aderência sobre a cicatriz proximal. Não houve evidência clínica ou radiográfica de sinostose radioulnar após seis meses de evolução. Todos os pacientes referiram satisfação com o tratamento. CONCLUSÃO: Concluímos que o método apresentado apresenta bom resultados assim como as demais técnicas, diminuido o risco de aderência sobre a prega flexora do cotovelo. Nível de evidência IV, Série de Casos.OBJECTIVE: Evaluation of postoperative results of repair of distal biceps brachii ruptures through a two anterior mini-incisions. METHODS: Nine patients with clinical and imaging (mRi diagnosis of total lesion of the biceps brachii at its insertion were operated with a surgical technique with two mini-incisions between 2008 and 2011. the patients were evaluated after three months of evolution and all of them recovered the fully flexion-extension arch. RESULTS: Two patients (22.2% presented a limitation of 20 degrees of supination. one patient (11.1% had radial nerve palsy, but was totally recovered after five months. in

  15. 实时定量超声弹性成像技术检测肱二头肌横切面与纵切面弹性差异%Quantitative measurement for the elastic modulus of the cross section and longitudinal section of biceps brachii by shear-wave elasto-sonography

    Institute of Scientific and Technical Information of China (English)

    范春芝; 安力春; 徐建红; 王真; 孙静; 唐杰; 温朝阳

    2011-01-01

    目的 研究声束平行于肌纤维(纵切面)和声束垂直于肌纤维(横切面)时肱二头肌的杨氏模量值差异.方法 141例男性志愿者,年龄16~34岁,平均22岁,均无上肢外伤史、重症肌无力、进行性肌营养不良、周期性瘫痪、代谢性肌病等病史.使用法国Supersonic Imagine公司的AixPlore型实时定量剪切波超声弹性成像超声诊断仪,L4-15线阵探头.探头平行于肱二头肌肌纤维(纵切面)和垂直于肱二头肌肌纤维(横切面)时分别测量肱二头肌杨氏模量值并进行比较.结果 松弛状态下,肱二头肌纵切面杨氏模量值为(45.658±13.479)kPa,横切面杨氏模量值为(7.334±1.612) kPa,差异有统计学意义(P=0.0000);收缩状态下,肱二头肌纵切面杨氏模量值为(123.658±31.392) kPa,横切面杨氏模量值为(13.261±4.045)kPa,差异有统计学意义(P=0.0000).结论 肱二头肌纵切面杨氏模量值明显大于横切面杨氏模量值;肱二头肌弹性模量的各向异性,提示在检查心肌、肾脏等组织结构具有各向异性的脏器时,应注意到超声检查切面角度可能会影响其杨氏模量测量值大小;横切面检查和纵切面检查相结合也许能为疾病的诊断提供更多的信息和依据.%Objective To assess the elastic modulus difference of the ultrasonic beam parallel to the biceps brachii fiber( longitudinal section )and the ultrasonic beam perpendicular to the biceps brachii fibers( cross section ). Methods A total of 141 male volunteers aged 16 to 34 years ( mean 22 years old ), who had no history of upper extremity trauma, myasthenia gravis, progressive muscular dystrophy, periodic paralysis and metabolic myopathy were included in the study. A shear-wave elasto-sonography ( AixPlorer model, Supersonic Imagine, Aix en Provence, France ) coupled with a linear array transducer array ( 4-15 MHz ) was employed. The ultrasound transducer was parallel to the biceps brachii muscle fiber and then it was

  16. The effects of aging on biceps brachii muscle fibers: a morphometrical study from biopsies and autopsies Efeitos do envelhecimento sobre as fibras do músculo biceps braquial: estudo morfométrico em biópsias e autópsias

    Directory of Open Access Journals (Sweden)

    Ana Cláudia Mattiello-Sverzut

    2003-09-01

    Full Text Available OBJECTIVES: In order to study the morphology and size of muscle fibers, cross sections of biceps brachii samples from autopsies, up to 9 hours after death, and biopsies of 72 subjects were compared. The subjects aged 13 to 84 years in both sexes. METHODS: The samples obtained from autopsies (n=47 were from subjects with sudden death, or who died after acute disease without evidence of neuromuscular involvement. The biopsies (n=25 were from patients with symptoms suggestive of inflammatory or metabolic myopathy, not confirmed morphologically. The lesser diameter of muscle fibers was measured using the ATPase reaction. RESULTS: Morphological analysis showed that aging changes were present from the sixth decade in autopsies, and consisted of atrophy and/or type-grouping. The statistical models adjusted for females in both autopsies and biopsies were linear straight with no variation in fiber size with increasing age. The models adjusted for males in both groups were quadratic, indicating that age influenced the size of different type fibers. In males type 2 were larger than type 1 fibers, and than fibers in females. CONCLUSIONS: These values might be useful as controls, helping interpretation of changes in fiber size in samples obtained from biopsies and autopsies.OBJETIVOS: Para estudar a morfologia e o tamanho das fibras musculares, foram comparadas cortes transversos do bíceps braquial autopsiados, até 9 horas após o óbito, com biopsias musculares, em 72 indivíduos de ambos os sexos e idades entre 13 e 84 anos. MÉTODO: As amostras das autópsias (n=47 foram obtidas de indivíduos que morreram subitamente, ou após uma doença aguda sem evidência de comprometimento neuromuscular. As biópsias (n=25 foram obtidas de pacientes com sintomas sugestivos de miopatias inflamatória ou metabólica, não confirmadas morfologicamente. O diâmetro menor das fibras foi obtido usando a reação de ATPase. RESULTADOS: A análise morfológica mostrou que

  17. MR imaging findings in flexed abducted supinated (FABS) position and clinical presentation following refixation of distal biceps tendon rupture using bioabsorbable suture anchors

    Energy Technology Data Exchange (ETDEWEB)

    Marnitz, T.; Steffen, I.G.; Denecke, T.; Elgeti, F.A. [Charite - Universitaetsmedizin Berlin (Germany). Klinik fuer Radiologie; Spiegel, D.; Hug, K.; Hueper, M.; Gerhardt, C; Greiner, S.; Scheibel, M. [Charite - Universitaetsmedizin Berlin (Germany). Centrum fuer Muskuloskeletale Chirurgie

    2012-05-15

    Purpose: To correlate MRI findings after suture anchor repair of distal biceps tendons with symptoms. Materials and Methods: 24 men with 25 distal biceps tendon ruptures (one bilateral) treated with suture anchor repair were retrospectively included. Follow-up after a mean of 31 months (range, 12 - 74) included clinical examination and MRI. The pain level and flexion strength compared to the uninvolved arm were recorded. MRI was performed at 1.5 T obtaining FABS position images (both elbows in 7 patients) and evaluated for artifacts, signal abnormalities, and rerupture by two experienced readers in consensus and blinded to symptoms. Pain and loss of flexion strength > 20 % were tested against MRI findings as dichotomous data using Fisher's exact chi-square tests (p < 0.05). Crosssectional areas of operated and uninvolved tendons were measured and evaluated with the Wilcoxon signed rank test (p < 0.05). Results: FABS views enabled good evaluation in 96 % of tendons. Rerupture was present in 3 of 25 elbows. Tendinous signal increase was seen in 59 % of intact tendons. We found activity-related pain or pain at rest in 32 % and a loss of flexion strength in 27 % of these cases. Testing revealed no significant correlation for any of the MRI features with any of the clinical parameters (p > 0.05). There was a 2.7-fold mean increase of the tendon cross-sectional area on the repaired side compared to the uninvolved contralateral tendon (p = 0.02). Conclusion: We found good MRI visualization of postoperative tendons, but no correlation between symptoms and MRI signal abnormalities or rerupture. The increase in caliber of the repaired tendon might promote an impingement in pronation. (orig.)

  18. Common Peroneal Nerve Palsy with Multiple-Ligament Knee Injury and Distal Avulsion of the Biceps Femoris Tendon

    Directory of Open Access Journals (Sweden)

    Takeshi Oshima

    2015-01-01

    Full Text Available A multiple-ligament knee injury that includes posterolateral corner (PLC disruption often causes palsy of the common peroneal nerve (CPN, which occurs in 44% of cases with PLC injury and biceps femoris tendon rupture or avulsion of the fibular head. Approximately half of these cases do not show functional recovery. This case report aims to present a criteria-based approach to the operation and postoperative management of CPN palsy that resulted from a multiple-ligament knee injury in a 22-year-old man that occurred during judo. We performed a two-staged surgery. The first stage was to repair the injuries to the PLC and biceps femoris. The second stage involved anterior cruciate ligament reconstruction. The outcomes were excellent, with a stable knee, excellent range of motion, and improvement in the palsy. The patient was able to return to judo competition 27 weeks after the injury. To the best of our knowledge, this is the first case report describing a return to sports following CPN palsy with multiple-ligament knee injury.

  19. 肩袖及肱二头肌能量技术对肱二头肌长头肌腱炎的远期疗效观察%Long term effect of muscle energy technique compared to corticosteroid injection in treating tendinitis of long head of bi-ceps brachii

    Institute of Scientific and Technical Information of China (English)

    朱迪; 张大威; 章丽雅

    2016-01-01

    Objective:To observe the long term effect of muscle energy technique (MET)used in the treatment of tendinitis of long head of biceps brachii.Methods:Forty-two patients with tendinitis of long head of biceps brachii were randomly assigned into 2 groups (n = 21 each).The control group was treated with corticosteroid injection, and the observation group was given MET.The two groups were assessed with muscle strength test and visual ana-logue scale (VAS)before treatment and at the end of the treatment period (3 weeks),and assessed with Constant at 3rd month,6th month and 1st year during the follow-up period after the treatment.Results:At the end of treatment (3 weeks),the strength of the biceps was significantly higher than before treatment (P <0.01),more significantly in the observation group than in the control group (P <0.01).The VAS scores in the two groups were significantly decreased after treatment as compared with those before treatment (P < 0.01),more significantly in the control group than in the observation group (P <0.01).At 3rd month,6th month,and 1st year during the follow-up peri-od after the treatment,the Constant scores in two groups were higher than pretreatment,and those in the observa-tion group were significantly higher than those in the control group (P <0.01).Conclusion:The short-term analge-sic efficacy of corticosteroid injection in the tendinitis of long head of biceps brachii is better than MET,but the long-term effect of MET in treating tendinitis of long head of biceps brachii is affirmative,and was obviously better than corticosteroid injection.%目的:应用肌肉能量技术(MET)对肩袖及肱二头肌进行干预,观察其对肱二头肌长头肌腱炎的远期疗效。方法:选取肱二头肌长头肌腱炎患者42例,随机分为观察组和对照组各21例,对观察组患者肩袖及肱二头肌应用MET 治疗,对照组进行鞘内注射封闭治疗,共治疗3周。分别于治疗前后进行疼痛视觉模拟

  20. Long head of the biceps tendinopathy: diagnosis and management.

    Science.gov (United States)

    Nho, Shane J; Strauss, Eric J; Lenart, Brett A; Provencher, Matthew T; Mazzocca, Augustus D; Verma, Nikhil N; Romeo, Anthony A

    2010-11-01

    Tendinopathy of the long head of the biceps brachii encompasses a spectrum of pathology ranging from inflammatory tendinitis to degenerative tendinosis. Disorders of the long head of the biceps often occur in conjunction with other shoulder pathology. A thorough patient history, physical examination, and radiographic evaluation are necessary for diagnosis. Nonsurgical management, including rest, nonsteroidal anti-inflammatory drugs, physical therapy, and injections, is attempted first in patients with mild disease. Surgical management is indicated for refractory or severe disease. In addition to simple biceps tenotomy, a variety of tenodesis techniques has been described. Open biceps tenodesis has been used historically. However, promising results have recently been reported with arthroscopic tenodesis.

  1. BICEP's bispectrum

    CERN Document Server

    Horner, Jonathan S

    2014-01-01

    The simplest interpretation of the Bicep2 result is that the scalar primordial power spectrum is slightly suppressed at large scales. These models result in a large tensor-to-scalar ratio $r$. In this work we show that the type of inflationary trajectory favoured by Bicep2 also leads to a larger non-Gaussian signal at large scales, roughly an order of magnitude larger than a standard slow-roll trajectory.

  2. Pain and the pathogenesis of biceps tendinopathy

    Science.gov (United States)

    Raney, Elise B; Thankam, Finosh G; Dilisio, Matthew F; Agrawal, Devendra K

    2017-01-01

    Biceps tendinopathy is a relatively common ailment that typically presents as pain, tenderness, and weakness in the tendon of the long head of the biceps brachii. Though it is often associated with degenerative processes of the rotator cuff and the joint, this is not always the case, thus, the etiology remains considerably unknown. There has been recent interest in elucidating the pathogenesis of tendinopathy, since it can be an agent of chronic pain, and is difficult to manage. The purpose of this article is to critically evaluate relevant published research that reflects the current understanding of pain and how it relates to biceps tendinopathy. A review of the literature was conducted to create an organized picture of how pain arises and manifests itself, and how the mechanism behind biceps tendinopathy possibly results in pain. Chronic pain is thought to arise from neurogenic inflammation, central pain sensitization, excitatory nerve augmentation, inhibitory nerve loss, and/or dysregulation of supraspinal structures; thus, the connections of these theories to the ones regarding the generation of biceps tendinopathy, particularly the neural theory, are discussed. Pain mediators such as tachykinins, CGRP, and alarmins, in addition to nervous system ion channels, are highlighted as possible avenues for research in tendinopathy pain. Recognition of the nociceptive mechanisms and molecular of biceps tendinopathy might aid in the development of novel treatment strategies for managing anterior shoulder pain due to a symptomatic biceps tendon. PMID:28670360

  3. Hydatid cyst of biceps brachii associated with peripheral neuropathy

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    Serkan Tuna

    2015-01-01

    Conclusion: Cases of concomitant neurologic findings and complaints secondary to peripheral nerve compression are very rare. The clinical findings should not be ruled out even if the EMG result is negative.

  4. Relaxation in distal and proximal arm muscles: a reaction time study.

    Science.gov (United States)

    Buccolieri, A; Avanzino, L; Trompetto, C; Abbruzzese, G

    2003-02-01

    To investigate whether the same mechanisms underlie muscle relaxation in proximal and distal arm muscles of normal subjects. Fourteen healthy subjects were studied using a simple visual reaction time paradigm. Relaxation reaction time (R-RT) and contraction reaction time (C-RT) were compared across different tasks involving distal (first dorsal interosseus, FDI, flexor carpi radialis, FCR) and proximal (biceps brachii, BB, triceps brachii, TR) arm muscles. Changes of FCR H-reflex before and during voluntary relaxation were investigated in two subjects. No significant difference was observed between R-RT and C-RT in the distal muscles. The R-RT was significantly shorter than C-RT in both the BB and TR muscles. The relaxation latency (R-RT) was significantly correlated to the subjects' age in all the muscles except the FDI. No inhibition of the FCR H-reflex could be observed in the 20 ms preceding muscle relaxation. Our findings suggest that neural mechanisms contribute differently to the relaxation of muscles with a different functional role. Voluntary relaxation in distal arm muscles is mainly related to the reduction of motor cortical output, while in proximal muscles a spinal disfacilitation is also present and possibly sustained by the modulation of presynaptic inhibition.

  5. Ultrasound evaluation of the distal migration of the long head of biceps tendon following tenotomy in patients undergoing arthroscopic repair of tears of the rotator cuff.

    Science.gov (United States)

    Karataglis, D; Papadopoulos, P; Boutsiadis, A; Fotiadou, A; Ditsios, K; Hatzokos, I; Christodoulou, A

    2012-11-01

    This study evaluates the position of the long head of biceps tendon using ultrasound following simple tenotomy, in patients with arthroscopically repaired rotator cuff tears. In total, 52 patients with a mean age of 60.7 years (45 to 75) underwent arthroscopic repair of the rotator cuff and simple tenotomy of the long head of biceps tendon. At two years post-operatively, ultrasound revealed that the tendon was inside the bicipital groove in 43 patients (82.7%) and outside in nine (17.3%); in six of these it was lying just outside the groove and in the remaining three (5.8%) it was in a remote position with a positive Popeye Sign. A dynamic ultrasound scan revealed that the tenotomised tendons had adhered to the surrounding tissues (autotenodesis).The initial condition of the tendon influenced its final position (p Popeye sign was statistically influenced by the pre-operative co-existence of supraspinatus and subscapularis tears (p Popeye sign.

  6. Biceps tendinitis caused by an osteochondroma in the bicipital groove: a rare cause of shoulder pain in a baseball player.

    Science.gov (United States)

    Onga, Takafumi; Yamamoto, Tetsuji; Akisue, Toshihiro; Marui, Takashi; Kurosaka, Masahiro

    2005-02-01

    Tendinitis of the long head of the biceps brachii muscle is commonly seen in athletes who do repetitive overhead motions. Common causes of biceps tendinitis include impingement syndrome, subluxation of the biceps tendon, and attrition tendinitis, whereas biceps tendinitis secondary to a bone neoplasm is rare. A case of biceps tendinitis caused by an osteochondroma arising in the left humeral bicipital groove in a 25-year-old male baseball player is reported. The tumor was hook-shaped, originated from the inferomedial portion of the humeral lesser tubercle, and surrounded the biceps tendon. Symptoms of increasing pain and inability to throw resulted from direct irritation of the biceps tendon by the tumor. Total excision of the tumor relieved the symptoms within 3 weeks. To our knowledge, there have been no reported cases in the English-language literature of biceps tendinitis caused by an osteochondroma.

  7. Relevant anatomic landmarks and measurements for biceps tenodesis.

    Science.gov (United States)

    Lafrance, Russell; Madsen, Wes; Yaseen, Zaneb; Giordano, Brian; Maloney, Michael; Voloshin, Ilya

    2013-06-01

    Biceps tenodesis around the pectoralis major insertion may alter resting tension on the biceps, leading to unfavorable clinical outcomes. The anatomic relationship between the musculotendinous junction (MTJ) of the biceps and the pectoralis major tendon will provide guidelines for anatomic location to perform biceps tenodesis with the goal of re-establishing biceps tension. Descriptive laboratory study. Cadaveric dissections were performed that reflected the pectoralis major tendon and exposed the long head of the biceps tendon (LHBT). Calipers were used to measure the longitudinal width of the pectoralis major tendon at the humerus, 2 cm away from the humerus, and at its proximal expansion on the humerus. The distance from the proximal extent of the pectoralis major tendon footprint to the beginning of the MTJ of the biceps and the length of the MTJ of the biceps were recorded. The location of the distal end of the MTJ of the biceps relevant to the inferior border of the pectoralis major tendon was calculated. The average longitudinal width of the pectoralis major tendon at its humeral insertion was 76.8 mm, the width 2 cm away from the humerus averaged 37.3 mm, and the proximal expansion averaged 13.3 mm. The MTJ of the biceps began an average of 32.4 mm distal from the proximal aspect of the pectoralis major footprint and extended for an average of 78.1 mm. The MTJ of the LHBT was calculated to extend 3.3 cm distal to the inferior border of the pectoralis major footprint. The MTJ of the biceps begins further proximal than may be appreciated intraoperatively. Knowledge of the anatomic relationships between the LHBT, its MTJ, and the pectoralis major tendon provides helpful guidelines for the biceps tenodesis site. The final resting spot of the most distal aspect of the MTJ of the LHBT after tenodesis should be approximately 3 cm distal to the inferior edge of the pectoralis major tendon footprint on the humerus.

  8. Comparison of the electromyographic activity in the upper trapezius and bicepts brachii muscle in subjects with muscular disorders: a pilot study

    NARCIS (Netherlands)

    Schulte, E.; Kallenberg, L.A.C.; Christensen, H.; Disselhorst-Klug, C.; Hermens, H.J.; Rau, G.; Sogaard, K.

    2006-01-01

    The aim of the present study was to investigate the extent to which work-related muscular disorders of the upper trapezius affect the activity of other pain-free muscles, in particular in the biceps brachii. Two groups of female subjects (age >43 years) participated in the study: seven affected subj

  9. Rotura del Bíceps Distal. Evaluación de resultados con técnica de doble fijación. [Distal biceps rupture: evaluation of results with double fixation technique

    Directory of Open Access Journals (Sweden)

    Miguel Ángel Capomassi

    2013-11-01

    Full Text Available In­tro­duc­ción La rotura del bíceps distal es una lesión poco frecuente producida por la aplicación de una fuerza excéntrica sobre el codo flexionado. El objetivo de este trabajo es analizar los resultados obtenidos para la reinserción del bíceps distal mediante técnica de doble fijación con botón de anclaje cortical y tornillo interferencial de biotenodesis a través de una incisión anterior única. Materiales­ y­ Métodos Entre agosto de 2008 y febrero de 2013, registramos 19 casos de rotura del bíceps distal tratados quirúrgicamente por vía anterior limitada. Los 17 últimos casos consecutivos fueron tratados con doble fijación utilizando botón extracortical y tornillo de biotenodesis, y forman parte del estudio. Todos eran hombres, con una mediana de la edad de 41 años (rango 27-59. Los pacientes fueron evaluados con el Cuestionario DASH y el Puntaje Subjetivo/Objetivo de Andrews y Carson, y la fuerza de flexión y supinación se controló con la escala del British Medical Research Council modificada por Mackinnon y Dellon (M0-M5. Resultados El cuestionario DASH arrojó un valor mediano de 1,7 (0-5,83 y el de Andrews y Carson, de 195 (170-200 para el total; con 15 resultados excelentes y 2 buenos. Todos consiguieron una fuerza M5 para flexión y supinación de antebrazo. El seguimiento tuvo una mediana de 12 meses (4-32. En dos pacientes, se registraron complicaciones, ambas con recuperación ad íntegrum. Conclusión La técnica descrita ha demostrado ser confiable y eficaz, y permitió lograr resultados satisfactorios y una baja tasa de complicaciones.

  10. Lesão do bíceps distal: avaliação funcional e dinamometria digital da sua reconstrução pela técnica da minidupla via de mayo Isokinetic and functional: evaluation of the distal biceps reconstruction by using the mayo technique

    Directory of Open Access Journals (Sweden)

    José Carlos Garcia Júnior

    2012-10-01

    Full Text Available OBJETIVO: Avaliar o resultado funcional de pacientes com lesão do bíceps distal, operados pela técnica da minidupla via de Mayo, com seguimento mínimo de seis meses pós-cirurgia através de dinamometria digital isocinética, goniometria e escores subjetivos a fim de estabelecer padrões objetivos e subjetivos de melhora e discutir a efetividade do procedimento. MÉTODOS: Foram avaliados nove pacientes submetidos à cirurgia para tratamento de lesão do bíceps distal através de dinamometria digital com Cybex® utilizando velocidade angular de 30°/s, cinco repetições e 120°/s, 15 repetições, comparando com o lado não lesado. Foram utilizados também DASH (Disabilities of the Arm, Shoulder and Hand, MayoElbow Score e goniometria convencional. RESULTADOS: A dinamometria digital mostrou que à velocidade angular de 30°/s com cinco repetições a flexão apresentou déficit médio de 9,6% e a supinação déficit médio de -28,97%. Com velocidade angular de 120°/s com 15 repetições, a flexão teve déficit médio de 4,43%; a supinação de -24,1%. CONCLUSÕES: A Perda de flexão segue o padrão já demonstrado na literatura; entretanto, em nossa série houve ganho de força para supinação, possivelmente devido ao protocolo rígido de reabilitação. A técnica empregada neste estudo mostrou-se segura, de baixo custo e com poucas complicações, apresentando bons resultados funcionais.OBJECTIVE: To evaluate the functional outcome among patients with distal biceps injuries who were operated using the Mayo mini-double route technique, with a minimum follow-up of six months after surgery, through digital isokinetic dynamometry, goniometry and subjective scores in order to establish objective and subjective improvement patterns and discuss the effectiveness of the procedure. METHODS: Nine patients who underwent surgery to treat distal biceps injury were evaluated by means of Cybex digital dynamometry using an angular velocity of 30

  11. Evaluation of the effect of plucking manipulation and rubbing manipulation in alleviating biceps brachii fatigue by sEMG%通过表面肌电信号分析拨法及揉法缓解肱二头肌运动性疲劳作用的研究

    Institute of Scientific and Technical Information of China (English)

    吴剑聪; 王俊杰; 姚斌彬; 鲁梦倩; 王磊; 耿楠; 叶宜颖; 于天源

    2013-01-01

    目的:运用表面肌电分析拨法及揉法缓解肱二头肌运动性疲劳的作用,从肌肉层面揭示推拿作用机制.方法:以30名男性大学生为受试对象,随机分为休息组,拨法组,揉法组,首先以60%最大随意收缩力(MVC)为负重,使肱二头肌静力收缩至力竭以建立疲劳模型,并获取收缩时长(T),中值频率(MF)变化率,MF变化百分比,平均功率频率(MPF)变化率,MPF变化百分比,其次进行干预或休息,随后再进行静力收缩至力竭,再次获取表面肌电值,最后统计分析.结果:各组干预前后T、MF变化率、MPF变化率等比较均有统计学意义(P<0.05),拨法组及揉法组与休息组的干预后T、MF变化率和MPF变化率等比较有统计学意义(P<0.05),拨法组与揉法组之间比较无统计学意义.结论:拨法和揉法缓解肌肉疲劳的效果优于休息,两手法均能缓解肌肉疲劳,效果没有明显差异.%Objective: Analyzing the effect of massage in alleviating muscle fatigue by sEMG to reveal the action mechanism of massage from muscle-level. Methods: Thirty Male volunteers from college were randomly divided into 3 groups, included rest group (control group), plucking manipulation group (group A), and rubbing manipulation group (group B). Then volunteers were asked to contract their biceps isometrically to exhaustion in order to collect data: the contraction duration, MF slope, and MPF slope. Then the subjects were allowed to rest, received plucking manipulation treatment or rubbing method treatment. After the intervention, another 60%MVC isometric bicep contraction to exhaustion were carried out again, and sEMG data was collected again. Results: In comparison among groups, there was difference before and after intervention in the contraction duration, MF slope and MPF slope (P<0.05). After intervention, group A and group B were better than control group in contraction duration, MF slope, MPF slope (P<0.05). There was no difference between

  12. Proximal Biceps Tendonitis

    Science.gov (United States)

    ... tendons that attach the top of the biceps muscle to the shoulder are the proximal tendons . There are two proximal ... ll want to do exercises that strengthen the muscles of your shoulder and upper arm. Strong muscles will keep the ...

  13. Biceps tendinitis and subluxation.

    Science.gov (United States)

    Patton, W C; McCluskey, G M

    2001-07-01

    Since the 17th century, the long head of the biceps tendon as a source of shoulder pain and its functional significance has been a source of debate. Although the term tendinitis is commonly used, overuse tendon injuries infrequently demonstrate inflammatory cells; instead, degenerative changes resulting from the failure of self-repair usually are found. Bicipital tendinitis or bicipital tenosynovitis is most often secondary to impingement beneath the coracoacromical arch. Primary bicipital tendinitis and tendinitis secondary to instability are possible, however. Through a careful history, physical examination, and appropriate imaging studies, the clinician can establish the diagnosis of disorders of the biceps tendon Arthroscopic evaluation greatly improves the diagnosis and treatment of biceps tendon and related shoulder pathology. Although the exact functional role of the biceps tendon remains incompletely defined, a growing body of evidence supports its role as a stabilizer of the glenohumeral joint. This stabilizing function should be incorporated into the treatment of biceps tendon disorders. Routine tenodesis has been replaced by a more individualized approach, taking into consideration physiologic age, activity level, expectations, and exact shoulder pathology present. New repair techniques are under development, and preservation of the biceps-labral complex is now preferred when possible.

  14. Correlação entre a proporção de fibras rápidas do músculo bíceps braquial e o torque relativo da flexão do cotovelo em sujeitos com hipótese clínica de miopatia Correlation between the proportion of fast fibers in the biceps brachii muscle and the relative torque during elbow flexion in subjects with clinical hypothesis of myopathy

    Directory of Open Access Journals (Sweden)

    CGN Back

    2008-04-01

    findings may be related to the predominant fiber type expressed in the muscle analyzed. OBJECTIVE: To correlate the proportion of type 2 fibers in the biceps brachii muscles of subjects with a clinical hypothesis of myopathy with their peak isometric and isokinetic torque during elbow flexion. METHOD: Seven subjects with a clinical hypothesis of myopathy participated in this study: four females of mean age 37 years (sd = 9, weight 73kg (sd= 26 and height 155cm (sd= 6; and three males of mean age 39 years (sd= 1, weight 88kg (sd= 5 and height 172cm (sd= 4. The muscle fiber proportion was analyzed using the mATPase technique. One month after taking biopsies, the subjects performed concentric isometric and isokinetic strength tests for elbow flexion and extension using an isokinetic dynamometer. The isometric and isokinetic peak torques at 90°s-¹ and 180°s-¹ were evaluated and the relative 90° (RT90 and 180° (RT180 torques were calculated. Spearman’s correlation (r was used for statistical analyses. RESULTS: The proportion of type 2 fibers correlated positively with RT180 (r= 0.89, p= 0.01, and there was a moderate correlation with RT90 (r= 0.75, p= 0.05. CONCLUSIONS: The results suggest that the contractile behavior of type 2 fibers was not modified in these subjects. The isokinetic dynamometer was shown to be an instrument capable of noninvasively evaluating muscle fiber type predominance.

  15. Interhemispheric inhibition in distal and proximal arm representations in the primary motor cortex.

    Science.gov (United States)

    Harris-Love, Michelle L; Perez, Monica A; Chen, Robert; Cohen, Leonardo G

    2007-03-01

    Interhemispheric inhibitory interactions (IHI) operate between homologous distal hand representations in primary motor cortex (M1). It is not known whether proximal arm representations exhibit comparable effects on their homologous counterparts. We studied IHI in different arm representations, targeting triceps brachii (TB, n = 13), first dorsal interosseous (FDI, n = 13), and biceps brachii (BB, n = 7) muscles in healthy volunteers. Transcranial magnetic stimulation test stimuli (TS) were delivered to M1 contralateral to the target muscle preceded 10 ms by a conditioning stimulus (CS) to the opposite M1 at 110-150% resting motor threshold (RMT). IHI was calculated as the ratio between motor-evoked potential (MEP) amplitudes in conditioned relative to unconditioned trials. Mean RMTs were 38.9, 46.9, and 46.0% of stimulator output in FDI, TB, and BB muscles, respectively. IHI was 0.45 +/- 0.41 (FDI), 0.78 +/- 0.38 (TB), and 0.52 +/- 0.32 (BB, P FDI) and 0.85 +/- 0.31 (TB, P FDI, 60 s for TB, and 40 s for BB. Additionally, a CS of roughly 120% RMT suppressed the test MEP but not a test H-reflex in BB, suggesting IHI observed in BB is likely mediated by a supraspinal mechanism. We conclude that IHI differs between different arm muscle representations, comparable between BB and FDI but lesser for TB. This finding suggests the amount of IHI between different arm representations does not strictly follow a proximal-to-distal gradient, but may be related to the role of each muscle in functional movement synergies.

  16. Comparison of maximum voluntary isometric contraction of the biceps on various posture and respiration conditions for normalization of electromyography data

    OpenAIRE

    Lee, Sang-Yeol; Jo, Marg-Eun

    2016-01-01

    [Purpose] Maximum voluntary isometric contraction can increase the reliability of electromyography data by controlling respiration; however, many studies that use normalization of electromyography data fail to account for this. This study aims to check changes in maximum voluntary isometric contraction based on changes in posture and respiration conditions. [Subjects and Methods] Twenty-two healthy volunteers were included in this study. Using 22 healthy subjects, MVIC of the biceps brachii m...

  17. Proximal Biceps Tenodesis

    Science.gov (United States)

    Kovack, Thomas J.; Idoine, John D.; Jacob, Paul B.

    2014-01-01

    Purpose: To (1) better define the anatomy of the proximal shoulder in relation to the long head of the biceps tendon, (2) compare the length-tension relationship of the biceps tendon in the native shoulder with that after arthroscopic and open tenodesis techniques using interference screws, and (3) provide surgical recommendations for both procedures based on study findings. Study Design: Descriptive laboratory study. Methods: Twenty fresh-frozen cadaveric shoulders were dissected for analysis. Initial anatomic measurements involving the proximal long head of the biceps tendon (BT) were made, which included: the labral origin to the superior bicipital groove (LO-SBG), the total tendon length (TTL), the musculotendinous junction (MTJ) to the inferior pectoralis major tendon border, the MTJ to the superior pectoralis major tendon border, and the biceps tendon diameter (BTD) at 2 different tenodesis locations. These same measurements were made again after completing a simulated suprapectoral arthroscopic and open subpectoral tenodesis, both with interference screw fixation. Statistical comparisons were then made between the native anatomy and that after tenodesis, with the goal of assessing the accuracy of re-establishing the normal length-tension relationship of the long head of the BT after simulated arthroscopic suprapectoral and open subpectoral tenodesis with tenodesis screws. Results: For all cadavers, the mean TTL was 104.1 mm. For the arthroscopic suprapectoral technique, the mean LO-SBG was 33.6 mm, and the mean tendon resection length was 12.8 mm in males and 5.0 mm in females. The mean BTD was 6.35 mm at the arthroscopic suprapectoral tenodesis site and 5.75 mm at the open subpectoral tenodesis site. Males were found to have statistically longer TTL and LO-SBG measurements (111.6 vs 96.5 mm [P = .027] and 37.2 vs 30.0 mm [P = .009], respectively). In the native shoulder, the mean distances from the MTJ to the superior and inferior borders of the pectoralis

  18. Myosin heavy chain composition of single fibres from m. biceps brachii of male body builders

    DEFF Research Database (Denmark)

    Klitgaard, H; Zhou, M.-Y.; Richter, Erik

    1990-01-01

    expression of MHC isoforms within histochemical type II fibres of human skeletal muscle with body building. Furthermore, in human skeletal muscle differences in expression of MHC isoforms may not always be reflected in the traditional histochemical classification of types I, IIa, IIb and IIc fibres....

  19. An unusual case of an intramuscular lipoma of the biceps brachii

    OpenAIRE

    Lahrach, Kamal; El Kadi, Khalid Ibn; Mezzani, Amine; Marzouki, Amine; Boutayeb, Fawzi

    2013-01-01

    Lipomas are common benign neoplasms consisting of mature fatty tissue. They are usually of roundish or ovoid shape and are situated in a single anatomical region. They most frequently occur on the back and in the extremities. Most lipomas are subcutaneous and require no imaging evaluation. When deep, large and unusual in location, MRI can identify and localise these tumours and is the best exploration to differentiate lipoma and lipo-sarcoma. We describe a case of a patient with an intramuscu...

  20. Motor unit properties in the biceps brachii of stroke patients assessed with surface array EMG

    NARCIS (Netherlands)

    Kallenberg, L.A.C.; Hermens, Hermanus J.

    2007-01-01

    As a consequence of a stroke, both motor control as well as motor unit (MU) characteristics may change, e.g. MU size has been reported to increase due to reinnervation. The aim of the present study was to investigate how differences between the affected and unaffected side of hemiparetic stroke

  1. Unusual nerve supply of biceps from ulnar nerve and median nerve and a third head of biceps

    Directory of Open Access Journals (Sweden)

    Arora L

    2006-01-01

    Full Text Available Variations in branching pattern of the brachial plexus are common and have been reported by several investigators. Of the four main nerves traversing the arm, namely median, ulnar, radial and musculocutaneous, the ulnar and median nerve do not give any branches to muscles of the arm. Ulnar nerve after taking origin from medial cord of brachial plexus runs distally through axilla on medial side of axillary artery till middle of arm, where it pierces the medial intermuscular septum and enters the posterior compartment of arm. Ulnar nerve enters forearm between two heads of flexor carpi ulnaris from where it continues further. It supplies flexor carpi ulnaris , flexor digitorum profundus and several intrinsic muscles of hand . We recently observed dual supply of biceps muscle from ulnar and median nerves in arm. Musculocutaneous nerve was absent. Although communications between nerves in arm is rare, the communication between median nerve and musculocutaneous nerve were described from the 19th century which could explain innervation of biceps from median nerve. But no accurate description of ulnar nerve supplying biceps could be found in literature. Knowledge of anatomical variation of these nerves at level of upper arm is essential in light of the frequency with which surgery is performed to transfer nerve fascicles from ulnar nerve to biceps in case of brachial plexus injuries. We also observed third head of biceps, our aim is to describe the exact topography of this variation and to discuss its morphological.

  2. Reconstruction of Posterior Interosseous Nerve Injury Following Biceps Tendon Repair: Case Report and Cadaveric Study

    OpenAIRE

    Mokhtee, David B.; Brown, Justin M.; Mackinnon, Susan E.; Tung, Thomas H.

    2008-01-01

    Surgical repair of distal biceps tendon rupture is a technically challenging procedure that has the potential for devastating and permanently disabling complications. We report two cases of posterior interosseous nerve (PIN) injury following successful biceps tendon repair utilizing both the single-incision and two-incision approaches. We also describe our technique of posterior interosseous nerve repair using a medial antebrachial cutaneous nerve graft (MABC) and a new approach to the termin...

  3. Reconstruction of posterior interosseous nerve injury following biceps tendon repair: case report and cadaveric study.

    Science.gov (United States)

    Mokhtee, David B; Brown, Justin M; Mackinnon, Susan E; Tung, Thomas H

    2009-06-01

    Surgical repair of distal biceps tendon rupture is a technically challenging procedure that has the potential for devastating and permanently disabling complications. We report two cases of posterior interosseous nerve (PIN) injury following successful biceps tendon repair utilizing both the single-incision and two-incision approaches. We also describe our technique of posterior interosseous nerve repair using a medial antebrachial cutaneous nerve graft (MABC) and a new approach to the terminal branches of the posterior interosseous nerve that makes this reconstruction possible. Finally, we advocate consideration for identification of the posterior interosseous nerve prior to reattachment of the biceps tendon to the radial tuberosity.

  4. Elbow tendinopathy and tendon ruptures: epicondylitis, biceps and triceps ruptures.

    Science.gov (United States)

    Rineer, Craig A; Ruch, David S

    2009-03-01

    Lateral and medial epicondylitis are common causes of elbow pain in the general population, with the lateral variety being more common than the medial by a ratio reportedly ranging from 4:1 to 7:1. Initially thought to be an inflammatory condition, epicondylitis has ultimately been shown to result from tendinous microtearing followed by an incomplete reparative response. Numerous nonoperative and operative treatment options have been employed in the treatment of epicondylitis, without the emergence of a single, consistent, universally accepted treatment protocol. Tendon ruptures about the elbow are much less frequent, but result in more significant disability and loss of function. Distal biceps tendon ruptures typically occur in middle-aged males as a result of an event that causes a sudden, eccentric contraction of the biceps. Triceps tendon ruptures are exceedingly rare but usually have a similar etiology with a forceful eccentric contraction of the triceps that causes avulsion of the tendon from the olecranon. The diagnosis of these injuries is not always readily made. Complete ruptures of the biceps or triceps tendons have traditionally been treated surgically with good results. With regard to biceps ruptures, there continues to be debate about the best surgical approach, as well as the best method of fixation of tendon to bone. This article is not meant to be an exhaustive review of the broad topics of elbow tendinopathy and tendon ruptures, but rather is a review of recently published information on the topics that will assist the clinician in diagnosis and management of these conditions.

  5. Loop Biceps Tenotomy: An Arthroscopic Technique for Long Head of Biceps Tenotomy

    OpenAIRE

    Goubier, Jean-Noel; Bihel, Thomas; Dubois, Elodie; Teboul, Frédéric

    2014-01-01

    The long head of the biceps tendon is frequently involved in shoulder pathologies, often in relation to inflammatory or degenerative damage to the rotator cuff. Biceps tenodesis in the bicipital groove and tenotomy are the main treatment options. Tenotomy of the long head of the biceps tendon is a simpler and quicker procedure than tenodesis, and it does not require the use of implants. However, retraction of the biceps tendon, leading to Popeye deformity, and biceps muscle cramps are common ...

  6. Glenoid labrum tears related to the long head of the biceps.

    Science.gov (United States)

    Andrews, J R; Carson, W G; McLeod, W D

    1985-01-01

    Tears of the glenoid labrum were observed in 73 baseball pitchers and other throwing athletes who underwent arthroscopic examination of the dominant shoulder. Most of the tears were located over the anterosuperior portion of the glenoid labrum near the origin of the tendon of the long head of the biceps muscle into the glenoid. At arthroscopy, the tendon of the long head of the biceps appeared to originate through and be continuous with the superior portion of the glenoid labrum. In many cases it appeared to have pulled the anterosuperior portion of the labrum off the glenoid. This observation was verified at arthroscopy by viewing the origin of the biceps tendon into the glenoid labrum as the muscle was electrically stimulated. With stimulation of the muscle, the tendinous portion became quite taut, particularly near its attachment to the glenoid labrum, and actually lifted the labrum off the glenoid. Three-dimensional high-speed cinematography with computer analysis revealed that the moment acting about the elbow joint to extend the joint through an arc of about 50 degrees was in excess of 600 inch-pounds. The extremely high velocity of elbow extension which is generated must be decelerated through the final 30 degrees of elbow extension. Of the muscles of the arm that provide the large deceleration forces in the follow-through phase of throwing, only the biceps brachii traverses both the elbow joint and the shoulder joint. Additional forces are generated in the biceps tendon in its function as a "shunt" muscle to stabilize the glenohumeral joint during the throwing act.(ABSTRACT TRUNCATED AT 250 WORDS)

  7. Surgical correction of the "Popeye biceps" deformity: dual-window approach for combined subpectoral and deltopectoral access and proximal biceps tenodesis.

    Science.gov (United States)

    Bhatia, Deepak N; DasGupta, Bibhas

    2012-09-01

    "Popeye biceps" deformity represents the appearance of a distally retracted biceps muscle resulting from either a traumatic long biceps tendon (LBT) rupture or an iatrogenic LBT tenotomy. Cosmetic and functional problems associated with the deformity may necessitate surgical correction, and surgical exposure using multiple incisions is recommended. The technique presented here describes a novel mini-open approach using a single 1-in incision that provides access to 3 peripectoral anatomical zones. Preoperative sonographic localization of the ruptured and retracted LBT is used to guide incision placement, and facilitates intraoperative tendon retrieval via a limited incision and minimal dissection. Inferolateral retraction of the mini-incision window permits infrapectoral and subpectoral LBT mobilization and dissection. Deltopectoral access via superomedial retraction of the same skin window is used to expose the suprapectoral zone and is employed for LBT retrieval and proximal tenodesis. Technical tips for safe dissection via a mini-incision, and methods for biological LBT augmentation are discussed.

  8. Bicep2. III. INSTRUMENTAL SYSTEMATICS

    Energy Technology Data Exchange (ETDEWEB)

    Ade, P. A. R. [School of Physics and Astronomy, Cardiff University, Cardiff, CF24 3AA (United Kingdom); Aikin, R. W.; Bock, J. J.; Brevik, J. A.; Filippini, J. P.; Golwala, S. R.; Hildebrandt, S. R. [Department of Physics, California Institute of Technology, Pasadena, CA 91125 (United States); Barkats, D. [Joint ALMA Observatory, ESO, Santiago (Chile); Benton, S. J. [Department of Physics, University of Toronto, Toronto, ON (Canada); Bischoff, C. A.; Buder, I.; Karkare, K. S. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS 42, Cambridge, MA 02138 (United States); Bullock, E. [Minnesota Institute for Astrophysics, University of Minnesota, Minneapolis, MN 55455 (United States); Dowell, C. D. [Jet Propulsion Laboratory, Pasadena, CA 91109 (United States); Duband, L. [SBT, Commissariat à l’Energie Atomique, Grenoble (France); Fliescher, S. [Department of Physics, University of Minnesota, Minneapolis, MN 55455 (United States); Halpern, M.; Hasselfield, M. [Department of Physics and Astronomy, University of British Columbia, Vancouver, BC (Canada); Hilton, G. C.; Irwin, K. D., E-mail: csheehy@uchicago.edu [National Institute of Standards and Technology, Boulder, CO 80305 (United States); Collaboration: Bicep2 Collaboration; and others

    2015-12-01

    In a companion paper, we have reported a >5σ detection of degree scale B-mode polarization at 150 GHz by the Bicep2 experiment. Here we provide a detailed study of potential instrumental systematic contamination to that measurement. We focus extensively on spurious polarization that can potentially arise from beam imperfections. We present a heuristic classification of beam imperfections according to their symmetries and uniformities, and discuss how resulting contamination adds or cancels in maps that combine observations made at multiple orientations of the telescope about its boresight axis. We introduce a technique, which we call “deprojection,” for filtering the leading order beam-induced contamination from time-ordered data, and show that it reduces power in Bicep2's actual and null-test BB spectra consistent with predictions using high signal-to-noise beam shape measurements. We detail the simulation pipeline that we use to directly simulate instrumental systematics and the calibration data used as input to that pipeline. Finally, we present the constraints on BB contamination from individual sources of potential systematics. We find that systematics contribute BB power that is a factor of ∼10× below Bicep2's three-year statistical uncertainty, and negligible compared to the observed BB signal. The contribution to the best-fit tensor/scalar ratio is at a level equivalent to r = (3–6) × 10{sup −3}.

  9. Anatomy of the biceps tendon: implications for restoring physiological length-tension relation during biceps tenodesis with interference screw fixation.

    Science.gov (United States)

    Denard, Patrick J; Dai, Xuesong; Hanypsiak, Brian T; Burkhart, Stephen S

    2012-10-01

    The purpose of this study was to characterize the normal length and diameter of the long head of the biceps tendon (BT) to provide guidelines for interference screw tenodesis. Twenty-one cadaveric shoulders were dissected. The BT length was measured from its origin to the humeral head articular margin (AM), lower subscapularis, upper pectoralis major, musculotendinous junction of the biceps (MTJ), and lower pectoralis major (LPM). Tendon diameter was measured at levels corresponding to tenodesis: (1) at the AM, (2) suprapectorally, and (3) subpectorally. The mean tendon length was 24.9 mm from the origin to the AM, 56.1 mm to the lower subscapularis, 73.8 mm to the upper pectoralis major, 98.5 mm to the MTJ, and 118.4 mm to the LPM. The mean tendon diameter was 6.6 mm for tenodesis at the AM, 5.1 mm for suprapectoral tenodesis, and 5.3 mm for subpectoral tenodesis. During biceps tenodesis with interference screw fixation, restoring the normal length-tension relation of the BT depends on the site of tenodesis and the depth of the bone socket. At the AM, a 25-mm bone socket on average will maintain the length-tension relation. For tenodesis more distally, the length of tendon resection varies with bone socket length. Because the MTJ is above the LPM, subpectoral tenodesis should be performed proximal to the LPM. This study provides guidelines for restoring the normal length-tension relation during biceps tenodesis with interference screw fixation. The simplest way to restore this relation is with tenodesis adjacent to the humeral head AM and a bone socket of 25 mm in depth. For tenodesis at more distal locations, both the length of the BT and the depth of the bone socket must be considered. Information about the normal BT may be useful in preserving the physiological length-tension relation during biceps tenodesis. Copyright © 2012 Arthroscopy Association of North America. Published by Elsevier Inc. All rights reserved.

  10. Increase in heterogeneity of biceps brachii activation during isometric submaximal fatiguing contractions: a multichannel surface EMG study

    NARCIS (Netherlands)

    Staudenmann, D.; Dieen, J.H. van; Stegeman, D.F.; Enoka, R.M.

    2014-01-01

    The effects of fatigue emerge from the beginning of sustained submaximal contractions, as shown by an increase in the amplitude of the surface electromyogram (EMG). The increase in EMG amplitude is attributed to an augmentation of the excitatory drive to the motor neuron pool that, more importantly

  11. The origin of activity in the biceps brachii muscle during voluntary contractions of the contralateral elbow flexor muscles

    NARCIS (Netherlands)

    Zijdewind, Inge; Butler, Jane E.; Gandevia, Simon C.; Taylor, Janet L.

    2006-01-01

    During strong voluntary contractions, activity is not restricted to the target muscles. Other muscles, including contralateral muscles, often contract. We used transcranial magnetic stimulation (TMS) to analyse the origin of these unintended contralateral contractions (termed "associated" contractio

  12. The origin of activity in the biceps brachii muscle during voluntary contractions of the contralateral elbow flexor muscles

    NARCIS (Netherlands)

    Zijdewind, Inge; Butler, Jane E.; Gandevia, Simon C.; Taylor, Janet L.

    2006-01-01

    During strong voluntary contractions, activity is not restricted to the target muscles. Other muscles, including contralateral muscles, often contract. We used transcranial magnetic stimulation (TMS) to analyse the origin of these unintended contralateral contractions (termed "associated"

  13. Loop biceps tenotomy: an arthroscopic technique for long head of biceps tenotomy.

    Science.gov (United States)

    Goubier, Jean-Noel; Bihel, Thomas; Dubois, Elodie; Teboul, Frédéric

    2014-08-01

    The long head of the biceps tendon is frequently involved in shoulder pathologies, often in relation to inflammatory or degenerative damage to the rotator cuff. Biceps tenodesis in the bicipital groove and tenotomy are the main treatment options. Tenotomy of the long head of the biceps tendon is a simpler and quicker procedure than tenodesis, and it does not require the use of implants. However, retraction of the biceps tendon, leading to Popeye deformity, and biceps muscle cramps are common complications after tenotomy. Therefore we propose an arthroscopic technique for tenotomy that limits the risk of Popeye deformity. This procedure consists of creating a loop at the severed end of the biceps tendon, which prevents the tendon from retracting into the bicipital groove.

  14. Triceps brachii tendon: anatomic-MR imaging study in cadavers with histologic correlation

    Energy Technology Data Exchange (ETDEWEB)

    Belentani, Clarissa [University of California, Department of Radiology, San Diego, CA (United States); Pastore, Daniel; Wangwinyuvirat, Mani; Dirim, Berna; Trudell, Debra J.; Resnick, Donald [University of California, Department of Radiology, San Diego, CA (United States); University of California, VA Medical Center, San Diego, CA (United States); Haghighi, Parviz [University of California, VA Medical Center, San Diego, CA (United States); University of California, Department of Histology, San Diego (United States)

    2009-02-15

    The purpose of this cadaveric study was to describe the normal MR anatomy of the triceps brachii tendon (TBT) insertion, to correlate the findings with those seen in anatomic sections and histopathologic analysis, and to review triceps tendon injuries. Twelve cadaveric elbows were used according to institution guidelines. T1-weighted spin-echo MR images were acquired in three planes. Findings on MR imaging were correlated with those derived from anatomic and histologic study. On MR images, the TBT had a bipartite appearance as it inserted on olecranon in all specimens. The insertion of the medial head was deeper than that of the long and lateral heads and was mainly muscular at its insertion, with a small amount of the tendon blending with the muscle distally, necessitating histologic analysis to determine if there was tendon blending with the muscle at the site of insertion and if the medial head inserted together with the common tendon or as a single unit. At histopathologic analysis, the three heads of the triceps tendon had a common insertion on the olecranon. The bipartite aspect of the tendon that was identified in the MR images was not seen by histologic study, indicating that there was a union of the medial and common tendons just before they inserted into bone. TBT has a bipartite appearance on MR images and inserts on olecranon as a single unit. (orig.)

  15. How Accurate Are We in Detecting Biceps Tendinopathy?

    Science.gov (United States)

    Carr, Ryan M; Shishani, Yousef; Gobezie, Reuben

    2016-01-01

    Biceps tendon pain is frequently called biceps "tendinitis," or inflammation of the biceps tendon. Histologic analysis of biceps tendon biopsies demonstrates changes in tenocyte size, ground substance, collagen organization, and vascularity observed with many different tendinopathies. There are distinct symptoms of biceps tendinopathy and a few provocative maneuvers can help make the diagnosis. Imaging studies (eg, MRI) can show changes in signal sequence or tears. However, MRI has a low sensitivity and frequently results in missed or misdiagnosed biceps pathology. Clinical decision making is best guided by a strong clinical suspicion based on patient history, physical examination, and MRI.

  16. Diagnosis and treatment of biceps tendinitis and tendinosis.

    Science.gov (United States)

    Churgay, Catherine A

    2009-09-01

    Biceps tendinitis is inflammation of the tendon around the long head of the biceps muscle. Biceps tendinosis is caused by degeneration of the tendon from athletics requiring overhead motion or from the normal aging process. Inflammation of the biceps tendon in the bicipital groove, which is known as primary biceps tendinitis, occurs in 5 percent of patients with biceps tendinitis. Biceps tendinitis and tendinosis are commonly accompanied by rotator cuff tears or SLAP (superior labrum anterior to posterior) lesions. Patients with biceps tendinitis or tendinosis usually complain of a deep, throbbing ache in the anterior shoulder. Repetitive overhead motion of the arm initiates or exacerbates the symptoms. The most common isolated clinical finding in biceps tendinitis is bicipital groove point tenderness with the arm in 10 degrees of internal rotation. Local anesthetic injections into the biceps tendon sheath may be therapeutic and diagnostic. Ultrasonography is preferred for visualizing the overall tendon, whereas magnetic resonance imaging or computed tomography arthrography is preferred for visualizing the intra-articular tendon and related pathology. Conservative management of biceps tendinitis consists of rest, ice, oral analgesics, physical therapy, or corticosteroid injections into the biceps tendon sheath. Surgery should be considered if conservative measures fail after three months, or if there is severe damage to the biceps tendon.

  17. Histomorphologic changes of the long head of the biceps tendon in common shoulder pathologies.

    Science.gov (United States)

    Mazzocca, Augustus D; McCarthy, Mary Beth R; Ledgard, Felicia A; Chowaniec, David M; McKinnon, William J; Delaronde, Steven; Rubino, Louis J; Apolostakos, John; Romeo, Anthony A; Arciero, Robert A; Beitzel, Knut

    2013-06-01

    To assess molecular and histologic differences between the proximal (intra-articular) and distal (extra-articular) portions of the long head of the biceps (LHB) tendon in 3 different disease states (biceps instability, tendinosis, and degenerative joint disease [DJD]) compared with a healthy tendon (fresh frozen). We used 32 LHB tendons of patients undergoing tenodesis (mean age, 54.7 ± 10.1 years) and 9 harvested tissue donors. Tendons were divided according to 4 diagnostic groups: (1) biceps instability, (2) tendinosis, (3) DJD, and (4) normal control. After sectioning, tendons were fixed in formalin and stained with H&E and alcian blue for histologic analysis. Measurements of collagen organization by use of polarized light microscopy was then performed, and protein expression for type I and type III collagen, tenascin C, and decorin was determined. There were no statistical differences found for protein expression of type I or type III collagen, tenascin C, or decorin. The proximal and distal regions of the tendons had statistically significant differences in alcian blue staining, with the proximal portion containing a higher amount of proteoglycan (instability, P = .001; tendinosis, P = .005; DJD, P = .008; control, P = .011). When compared with the nonpathologic control tendons, a significant increase in alcian blue staining for the proximal region was seen in all 3 groups. Total polarized light analysis showed that the distal tendon had a significantly higher intensity (organization) compared with the proximal tendon (P tendon when compared with the distal regions in all pathologic groups. However, no major differences at the cellular level were found among groups. The pathomechanisms of the various forms of known LHB diagnoses are not yet fully understood and basic science studies may help in understanding their etiology and therefore optimizing treatment options. Copyright © 2013 Arthroscopy Association of North America. Published by Elsevier Inc. All

  18. BICEP3 focal plane design and detector performance

    CERN Document Server

    Hui, H; Ahmed, Z; Alexander, K D; Amiri, M; Barkats, D; Benton, S J; Bischoff, C A; Bock, J J; Boenish, H; Bowens-Rubin, R; Buder, I; Bullock, E; Buza, V; Connors, J; Filippini, J P; Fliescher, S; Grayson, J A; Halpern, M; Harrison, S; Hilton, G C; Hristov, V V; Irwin, K D; Kang, J; Karkare, K S; Karpel, E; Kefeli, S; Kernasovskiy, S A; Kovac, J M; Kuo, C L; Leitch, E M; Lueker, M; Megerian, K G; Monticue, V; Namikawa, T; Netterfield, C B; Nguyen, H T; O'Brient, R; Ogburn, R W; Pryke, C; Reintsema, C D; Richter, S; Schwarz, R; Sorensen, C; Sheehy, C D; Staniszewski, Z K; Steinbach, B; Teply, G P; Thompson, K L; Tolan, J E; Tucker, C; Turner, A D; Vieregg, A G; Wandui, A; Weber, A C; Wiebe, D V; Willmert, J; Wu, W L K; Yoon, K W

    2016-01-01

    BICEP3, the latest telescope in the BICEP/Keck program, started science observations in March 2016. It is a 550mm aperture refractive telescope observing the polarization of the cosmic microwave background at 95 GHz. We show the focal plane design and detector performance, including spectral response, optical efficiency and preliminary sensitivity of the upgraded BICEP3. We demonstrate 9.72$\\mu$K$\\sqrt{\\textrm{s}}$ noise performance of the BICEP3 receiver.

  19. Distal clavicle edema; Distales Klavikulaoedem

    Energy Technology Data Exchange (ETDEWEB)

    Vahlensieck, M.; Schmittke, I. [Radiologie Haydnhaus, Bonn (Germany); Schmidt, H.M. [Universitaet Bonn (Germany). Anatomisches Institut

    2006-07-15

    Distal clavicle marrow edema: frequency, MRI in the early stage and macroscopic correlation to the bone marrow distribution and to evaluate frequency and diagnostic criteria of a posttraumatic clavicula disorder with an edema pattern on MRI. An additional macroscopic study of the clavicle should elucidate anatomic pecularities which could explain the reaction of the distal clavicle. 285 MRI of traumatized patients were analyzed for edema pattern of the distal clavicle. Pattern A edema within the clavicle and the acromion was distinguished from pattern B edema within the clavicle only. Dissection in 20 cadavers should reveal vascular pecularities and the bone marrow distribution within clavicle and acromion or vascular pecularities. In 38 patients (13,3%) we found edema within the distal clavicle. Pattern A was found in 28 (9,8%) and pattern B in 10 patients (3,5%). Pattern A was usually associated with swelling of the AC joint (27 out of 28). Other injuries were not evident. 18 cadavers showed hematopoetic marrow within the distal clavicle and fatty marrow within the acromion. The distale clavicle can frequently react with edema pattern after trauma without evidence for another injury. Distinguish in cases with and cases without synovitis of the AC joint could have impact on therapy. A peculier vascular supply of the distal clavicle could not be found. (orig.) [German] Bestimmung der Haeufigkeit und diagnostischer Kriterien einer posttraumatischen Klavikulaerkrankung, die mit einem MR-tomographischen Oedemmuster auffaellt. Makroskopische Besonderheiten der Markhoehle sollten gesucht werden, die die besondere Reaktionsform der distalen Klavikula mit erklaeren koennten. 285 Patienten mit traumaassoziierten, zeitversetzt nach dem Unfallereignis bestehenden Schulterbeschwerden, wurden auf MR-tomographische Oedemmuster in der distalen Klavikula untersucht. Das Oedemmuster wurde in ''Klavikula allein'' (Muster B) und ''mit Beteiligung des

  20. Evaluating the Native Length-Tension Relationship in Arthroscopic Suprapectoral Biceps Tenodesis: An MRI Assessment of Contralateral Shoulders.

    Science.gov (United States)

    Prodromo, John; Mulcahey, Mary K; Hong, Raymond; David, Tal S

    2015-11-01

    Successful tenodesis of the proximal biceps relies on accurate reproduction of the native length-tension relationship of the long head of the biceps (LHB). While open tenodesis procedures can reproduce this relationship by referencing the position of the LHB musculotendinous junction (MTJ) to a visible anatomic landmark, arthroscopic suprapectoral tenodesis does not afford such advantage because the MTJ is usually not visible. No studies to date have evaluated the position of the MTJ of the LHB following arthroscopic suprapectoral biceps tenodesis. Patients undergoing arthroscopic suprapectoral biceps tenodesis between January 2013 and May 2014 at one center were evaluated for inclusion. Patients included in the study underwent a postoperative MRI of bilateral shoulders. The distance from the superior portion of the humeral head to the LHB MTJ was measured bilaterally. The measurements from each matched pair were compared using a paired t-test to determine if arthroscopic suprapectoral biceps tenodesis anatomically restored the LHB length-tension relationship. A total of 17 patients met the inclusion criteria. Fourteen of the seventeen patients underwent a postoperative MRI of bilateral shoulders. The distance from the superior portion of the humeral head to the LHB musculotendinous junction was significantly larger on the operative side when compared to the nonsurgical side (operative side mean 98.34 mm, standard deviation 13.38 mm; nonsurgical mean 87.26 mm, standard deviation 9.09; mean difference 11.08 mm; p=0.0105). The musculotendinous junction of the LHB in patients who underwent arthroscopic suprapectoral biceps tenodesis was located significantly more distal than the contralateral control, as measured on MRI.

  1. Tensors, BICEP2, prior dependence, and dust

    CERN Document Server

    Cortês, Marina; Parkinson, David

    2014-01-01

    We investigate the prior dependence on the inferred spectrum of primordial tensor perturbations, in light of recent results from BICEP2 and taking into account a possible dust contribution to polarized anisotropies. We highlight an optimized parameterization of the tensor power spectrum, and adoption of a logarithmic prior on its amplitude $A_T$, leading to results that transform more evenly under change of pivot scale. In the absence of foregrounds the tension between the results of BICEP2 and Planck drives the tensor spectral index $n_T$ to be blue-tilted in a joint analysis, which would be in contradiction to the standard inflation prediction ($n_T<0$). When foregrounds are accounted for, the BICEP2 results no longer require non-standard inflationary parameter regions. We present limits on primordial $A_T$ and $n_T$, adopting foreground scenarios put forward by Mortonson & Seljak and motivated by Planck 353 GHz observations, and assess what dust contribution leaves a detectable cosmological signal. ...

  2. Biceps Lesion Associated With Rotator Cuff Tears

    Science.gov (United States)

    Jeong, Ho Yeon; Kim, Jung Youn; Cho, Nam Su; Rhee, Yong Girl

    2016-01-01

    Background: Various tenodesis methods are being used for long head of the biceps tendon lesions. However, there is no consensus on the most appropriate surgical method. Hypothesis: There are significant differences in incidence of cosmetic deformity and persistent bicipital pain between open subpectoral and arthroscopic intracuff tenodesis groups. Study Design: Cohort study; Level of evidence, 3. Methods: This study included 72 patients who underwent biceps tenodesis and rotator cuff repair between January 2009 and May 2014 and who were followed for at least 1 year. Open subpectoral tenodesis was performed in 39 patients (group A), and arthroscopic intracuff tenodesis was performed in 33 patients (group B). Results: In group A, the mean visual analog scale (VAS) score for pain during motion and mean University of California, Los Angeles (UCLA) and Constant scores significantly improved from 4.6, 18.6, and 64.5 preoperatively to 1.9, 30.5, and 86.5 at last follow-up, respectively (P Popeye deformity was noted in 2 (5.2%) patients from group A and 5 (15.6%) patients from group B (P = .231). Additionally, persistent bicipital tenderness was noted in 1 (2.6%) patient from group A and 8 (24.2%) patients from group B (P = .012). Conclusion: Both open subpectoral tenodesis and arthroscopic intracuff tenodesis show good clinical outcomes for long head of the biceps tendon lesions. However, open subpectoral tenodesis may be more appropriate, considering the low incidence of Popeye deformity and tenderness. PMID:27231699

  3. Biceps Tenodesis for Type II SLAP Tears.

    Science.gov (United States)

    Tayrose, Gregory A; Karas, Spero G; Bosco, Joseph

    2015-06-01

    Tears of the superior glenoid labrum are a common cause of shoulder pain and disability, especially in overhead athletes such as pitchers, swimmers, and volleyball players. Type II SLAP lesions have been the most clinically important superior labral pathology, and the management of this lesion has been a very controversial topic. Currently, there are no high level studies in the literature to guide treatment. While the few level 3 and level 4 evidence studies that are available following arthroscopic repair of type II SLAP lesions all report reasonable overall patient satisfaction, persistent postoperative pain is common and associated with a low return to pre-injury level of sports participation. There has been a recent school of thought that biceps tenodesis, which maintains the length-tension relationship of the long head of biceps, should be the procedure of choice for patients with isolated type II SLAP lesions. The current paper reviews the role biceps tenodesis plays in the management of type II SLAP tears.

  4. CMB Polarization with BICEP2 and Keck-Array

    Science.gov (United States)

    Pryke, Clement; BICEP2 and Keck-Array Collaborations

    2013-01-01

    BICEP2 is an evolution from the highly successful BICEP CMB polarization experiment. In turn Keck-Array is an array of BICEP2 like receivers to achieve an additional increase in sensitivity. All these experiments are located at the South Pole in Antarctica and target the CMB B-mode polarization signal which is predicted to exist in many simpler models of Inflation at angular scales of several degrees. The design and performance of BICEP2 and Keck-Array is described and some preliminary polarization maps are presented.

  5. Distal renal tubular acidosis

    Science.gov (United States)

    Renal tubular acidosis - distal; Renal tubular acidosis type I; Type I RTA; RTA - distal; Classical RTA ... excreting it into the urine. Distal renal tubular acidosis (Type I RTA) is caused by a defect ...

  6. Gauged M-flation After BICEP2

    CERN Document Server

    Ashoorioon, A

    2014-01-01

    In view of the recent BICEP2 results [arXiv:1403.3985] which may be attributed to the observation of B-modes polarization of the CMB with tensor-to-scalar ratio $r=0.2_{-0.05}^{+0.07}$, we revisit M-flation model. Gauged M-flation is a string theory motivated inflation model with Matrix valued scalar inflaton fields in the adjoint representation of a $U(N)$ Yang-Mills theory. In continuation of our previous works, we show that in the M-flation model induced from a supersymmetric 10d background probed by a stack of $N$ D3-branes, the "effective inflaton" $\\phi$ has a double-well Higgs-like potential, with minima at $\\phi=0,\\mu$. We focus on the $\\phi>\\mu$, symmetry-breaking region. We thoroughly examine predictions of the model for $r$ in the $2\\sigma$ region allowed for $n_S$ by the Planck experiment. As computed in [arXiv:0903.1481], for $N_e=60$ and $n_S=0.96$ we find $r\\simeq 0.2$, which sits in the sweet spot of BICEP2 region for $r$. We find that with increasing $\\mu$ arbitrarily, $n_S$ cannot go beyond ...

  7. Features of surface myoelectric signals taken from the triceps brachii and biceps brachii of stroke patients%脑卒中偏瘫患者肱二、三头肌表面肌电特征的研究

    Institute of Scientific and Technical Information of China (English)

    齐瑞; 严隽陶; 房敏; 朱燕; 张宏

    2006-01-01

    目的观察和分析脑卒中偏瘫患者在最大等长收缩(MIVC)过程中肱二、三头肌表面肌电图的特征,为脑卒中后偏瘫上肢训练提供电生理依据.方法选择18例轻偏瘫或处于恢复期的脑卒中患者,在进行肘关节屈、伸肌MIVC时,检测其力矩和肱二、三头肌表面肌电信号.结果 MIVC状态下,肘屈曲时肱二头肌健侧的积分肌电值(iEMG)明显大于患侧(P<0.05),肱三头肌健、患侧iEMG比较,差异无统计学意义(P>0.05);肘伸展时肱三头肌健侧iEMG明显大于患侧(P<0.01),肱二头肌患侧iEMG明显大于健侧(P<0.05).肱三头肌患侧协同收缩率明显大于健侧(P<0.01),肱二头肌患侧协同收缩率有大于健侧的趋势,但差异无统计学意义(P>0.05).无论是屈肌收缩还是伸肌收缩,患侧的峰力矩均明显小于健侧(P<0.01).结论脑卒中偏瘫患者肘关节痉挛以屈肌为主,提示脑卒中后偏瘫上肢的康复治疗应以训练伸肌侧肌力和抑制拮抗肌协同收缩为主.

  8. BICEP3 performance overview and planned Keck Array upgrade

    Science.gov (United States)

    Grayson, J. A.; Ade, P. A. R.; Ahmed, Z.; Alexander, K. D.; Amiri, M.; Barkats, D.; Benton, S. J.; Bischoff, C. A.; Bock, J. J.; Boenish, H.; Bowens-Rubin, R.; Buder, I.; Bullock, E.; Buza, V.; Connors, J.; Filippini, J. P.; Fliescher, S.; Halpern, M.; Harrison, S.; Hilton, G. C.; Hristov, V. V.; Hui, H.; Irwin, K. D.; Kang, J.; Karkare, K. S.; Karpel, E.; Kefeli, S.; Kernasovskiy, S. A.; Kovac, J. M.; Kuo, C. L.; Leitch, E. M.; Lueker, M.; Megerian, K. G.; Monticue, V.; Namikawa, T.; Netterfield, C. B.; Nguyen, H. T.; O'Brient, R.; Ogburn, R. W.; Pryke, C.; Reintsema, C. D.; Richter, S.; Schwarz, R.; Sorenson, C.; Sheehy, C. D.; Staniszewski, Z. K.; Steinbach, B.; Teply, G. P.; Thompson, K. L.; Tolan, J. E.; Tucker, C.; Turner, A. D.; Vieregg, A. G.; Wandui, A.; Weber, A. C.; Wiebe, D. V.; Willmert, J.; Wu, W. L. K.; Yoon, K. W.

    2016-07-01

    Bicep3 is a 520mm aperture, compact two-lens refractor designed to observe the polarization of the cosmic microwave background (CMB) at 95 GHz. Its focal plane consists of modularized tiles of antenna-coupled transition edge sensors (TESs), similar to those used in Bicep2 and the Keck Array. The increased per-receiver optical throughput compared to Bicep2/Keck Array, due to both its faster f=1:7 optics and the larger aperture, more than doubles the combined mapping speed of the Bicep/Keck program. The Bicep3 receiver was recently upgraded to a full complement of 20 tiles of detectors (2560 TESs) and is now beginning its second year of observation (and first science season) at the South Pole. We report on its current performance and observing plans. Given its high per-receiver throughput while maintaining the advantages of a compact design, Bicep3- class receivers are ideally suited as building blocks for a 3rd-generation CMB experiment, consisting of multiple receivers spanning 35 GHz to 270 GHz with total detector count in the tens of thousands. We present plans for such an array, the new "BICEP Array" that will replace the Keck Array at the South Pole, including design optimization, frequency coverage, and deployment/observing strategies.

  9. Testing hybrid natural inflation with BICEP2

    Energy Technology Data Exchange (ETDEWEB)

    Carrillo-González, Mariana [Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Apdo. Postal 48-3, 62251 Cuernavaca, Morelos (Mexico); Germán, Gabriel, E-mail: gabriel@fis.unam.mx [Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Apdo. Postal 48-3, 62251 Cuernavaca, Morelos (Mexico); Herrera-Aguilar, Alfredo [Departamento de Física, Universidad Autónoma Metropolitana Iztapalapa, San Rafael Atlixco 186, CP 09340, México D.F. (Mexico); Instituto de Física y Matemáticas, Universidad Michoacana de San Nicolás de Hidalgo, Edificio C-3, Ciudad Universitaria, CP 58040, Morelia, Michoacán (Mexico); Hidalgo, Juan Carlos [Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Apdo. Postal 48-3, 62251 Cuernavaca, Morelos (Mexico); Sussman, Roberto A. [Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Apdo. Postal 70-543, 04510 México D.F. (Mexico)

    2014-06-27

    We analyse Hybrid Natural Inflation in view of the recent results for the tensor index reported by BICEP2. We find that it predicts a large running of the scalar spectrum which is potentially detectable by large scale structure through measurements of clustering of galaxies in combination with CMB data and by 21 cm forest observations. The running of the running is also relatively large becoming close to 10{sup −2}. Along the way, we find general consistency relations at which observables are subject if the slow-roll approximation is imposed. Failure to satisfy these equations by the values obtained for the observables in surveys would be a failure of the slow-roll approximation itself.

  10. Can weak lensing surveys confirm BICEP2 ?

    CERN Document Server

    Chisari, Nora Elisa; Schmidt, Fabian

    2014-01-01

    The detection of B-modes in the Cosmic Microwave Background (CMB) polarization by the BICEP2 experiment, if interpreted as evidence for a primordial gravitational wave background, has enormous ramifications for cosmology and physics. It is crucial to test this hypothesis with independent measurements. A gravitational wave background leads to B-modes in galaxy shape correlations (shear) both through lensing and tidal alignment effects. Since the systematics and foregrounds of galaxy shapes and CMB polarization are entirely different, a detection of a cross-correlation between the two observables would provide conclusive proof for the existence of a primordial gravitational wave background. We find that upcoming weak lensing surveys will be able to detect the cross-correlation between B-modes of the CMB and galaxy shapes. However, this detection is not sufficient to confirm or falsify the hypothesis of a primordial origin for CMB B-mode polarization.

  11. Do Mixed States save Effective Field Theory from BICEP?

    CERN Document Server

    Collins, Hael; Vardanyan, Tereza

    2014-01-01

    The BICEP2 collaboration has for the first time observed the B-mode polarization associated with inflationary gravitational waves. Their result has some discomfiting implications for the validity of an effective theory approach to single-field inflation since it would require an inflaton field excursion larger than the Planck scale. We argue that if the quantum state of the gravitons is a mixed state based on the Bunch-Davies vacuum, then the tensor to scalar ratio r measured by BICEP is different than the quantity that enters the Lyth bound. When this is taken into account, the tension between effective field theory and the BICEP result is alleviated.

  12. Stimulus-response characteristics of motor evoked potentials and silent periods in proximal and distal upper-extremity muscles.

    NARCIS (Netherlands)

    Kuijk, A.A. van; Anker, L.C.; Pasman, J.W.; Hendriks, J.C.M.; Elswijk, G.A.F. van; Geurts, A.C.H.

    2009-01-01

    OBJECTIVE: To compare stimulus-response characteristics of both motor evoked potentials (MEP) and silent periods (SP) induced by transcranial magnetic stimulation (TMS) in proximal and distal upper-extremity muscles. METHODS: Stimulus-response curves of MEPs and SPs were obtained from the biceps bra

  13. Stimulus-response characteristics of motor evoked potentials and silent periods in proximal and distal upper-extremity muscles.

    NARCIS (Netherlands)

    Kuijk, A.A. van; Anker, L.C.; Pasman, J.W.; Hendriks, J.C.M.; Elswijk, G.A.F. van; Geurts, A.C.H.

    2009-01-01

    OBJECTIVE: To compare stimulus-response characteristics of both motor evoked potentials (MEP) and silent periods (SP) induced by transcranial magnetic stimulation (TMS) in proximal and distal upper-extremity muscles. METHODS: Stimulus-response curves of MEPs and SPs were obtained from the biceps bra

  14. The "anchor shape" technique for long head of the biceps tenotomy to avoid the popeye deformity.

    Science.gov (United States)

    Narvani, A Ali; Atoun, Ehud; Van Tongel, Alexander; Sforza, Giuseppe; Levy, Ofer

    2013-05-01

    Surgical options for symptomatic pathologies of the long head of the biceps (LHB) include tenotomy and tenodesis. Tenotomy is surgically simple and quick, does not require immobilization, and avoids implant complications. However, it is associated with residual "Popeye" muscle deformity and biceps muscle cramps. Tenodesis avoids Popeye deformity, but it is technically a more difficult operation with a longer rehabilitation period and possible implant complications. The purpose of this report is to describe a novel technique for LHB tenotomy that avoids the Popeye muscle deformity. Before releasing the LHB from its anchor over the superior labrum, this technique consists of making an oblique incision, involving 50% of the tendon, distal to its attachment at the superior labrum. A second standard complete tenotomy incision is made about 1.5 cm medial to the oblique incision. The remaining stump of the LHB at the tendon-labrum junction is resected. The first incision, an oblique incomplete incision, allows the remnant of the LHB to open up and form an "anchor shape" that anchors the LHB at the articular entrance of the bicipital groove, thus decreasing the risk of Popeye deformity.

  15. 探讨肱二头肌长头肌腱炎的手术策略%Surgical Strategy on Tendinitis of Iong Head of Biceps Brachii

    Institute of Scientific and Technical Information of China (English)

    陆锋伟; 史继祥; 丁国平; 李立强; 张伟; 孙青刚; 顾欣

    2012-01-01

    目的 探讨手术松解配合药物注射治疗顽固性肱二头肌长头肌腱炎的疗效.方法 2010年7月-2011年12月,该院对22例顽固性肱二头肌长头肌腱炎患者行松解术,术中配合使用复方倍他米松及透明质酸钠,术后2周和3个月随访肩部活动范围,并采用美国肩肘协会评分(ASES)评估.结果 手术时间60~80 min,平均75 min,术中及术后未出现并发症.20例术后2周肩关节外展、前屈、后伸及外旋与术前比较明显改善,术后3个月改善更明显(P<0.01),22例术后2周及3个月ASES评分(88.7±5.2,89.2±6.6)与术前(39.5±10.1)比较,差异有统计学意义(n=22 t=20.7,21.1; P<0.01).结论 肱二头肌长头肌腱松解术配合复方倍他米松及透明质酸钠注射是治疗顽固性肱二头肌长头肌腱炎最直接和有效的方法.

  16. S-dual inflation: BICEP2 data without unlikeliness

    Energy Technology Data Exchange (ETDEWEB)

    Anchordoqui, Luis A. [Department of Physics and Astronomy, Lehman College at CUNY, Bronx NY 10468 (United States); Department of Physics, University of Wisconsin–Milwaukee, Milwaukee, WI 53201 (United States); Barger, Vernon [Department of Physics, University of Wisconsin, Madison, WI 53706 (United States); Goldberg, Haim [Department of Physics, Northeastern University, Boston, MA 02115 (United States); Huang, Xing [Department of Physics, National Taiwan Normal University, Taipei, 116, Taiwan (China); Marfatia, Danny [Department of Physics and Astronomy, University of Hawaii, Honolulu, HI 96822 (United States)

    2014-06-27

    We show that S-dual inflationary potentials solve the unlikeliness problem manifested in Planck data and explain the excess B-mode power observed by the BICEP2 experiment as arising from primordial tensor fluctuations.

  17. Constraints on cosmological parameters from Planck and BICEP2 data

    CERN Document Server

    Anchordoqui, Luis A

    2014-01-01

    We show that the tension introduced by the detection of large amplitude gravitational wave power by the BICEP2 experiment with temperature anisotropy measurements by the Planck mission is alleviated in models where extra light species contribute to the effective number of relativistic degrees of freedom. We also show that inflationary models based on S-dual potentials are in agreement with Planck and BICEP2 data.

  18. BICEP3 performance overview and planned Keck Array upgrade

    CERN Document Server

    Grayson, J A; Ahmed, Z; Alexander, K D; Amiri, M; Barkats, D; Benton, S J; Bischoff, C A; Bock, J J; Boenish, H; Bowens-Rubin, R; Buder, I; Bullock, E; Buza, V; Connors, J; Filippini, J P; Fliescher, S; Halpern, M; Harrison, S; Hilton, G C; Hristov, V V; Hui, H; Irwin, K D; Kang, J; Karkare, K S; Karpel, E; Kefeli, S; Kernasovskiy, S A; Kovac, J M; Kuo, C L; Leitch, E M; Lueker, M; Megerian, K G; Monticue, V; Namikawa, T; Netterfield, C B; Nguyen, H T; O'Brient, R; Ogburn, R W; Pryke, C; Reintsema, C D; Richter, S; Schwarz, R; Sorensen, C; Sheehy, C D; Staniszewski, Z K; Steinbach, B; Teply, G P; Thompson, K L; Tolan, J E; Tucker, C; Turner, A D; Vieregg, A G; Wandui, A; Weber, A C; Wiebe, D V; Willmert, J; Wu, W L K; Yoon, K W

    2016-01-01

    BICEP3 is a 520 mm aperture, compact two-lens refractor designed to observe the polarization of the cosmic microwave background (CMB) at 95 GHz. Its focal plane consists of modularized tiles of antenna-coupled transition edge sensors (TESs), similar to those used in BICEP2 and the Keck Array. The increased per-receiver optical throughput compared to BICEP2/Keck Array, due to both its faster f/1.7 optics and the larger aperture, more than doubles the combined mapping speed of the BICEP/Keck program. The BICEP3 receiver was recently upgraded to a full complement of 20 tiles of detectors (2560 TESs) and is now beginning its second year of observation (and first science season) at the South Pole. We report on its current performance and observing plans. Given its high per-receiver throughput while maintaining the advantages of a compact design, BICEP3-class receivers are ideally suited as building blocks for a 3rd-generation CMB experiment, consisting of multiple receivers spanning 35 GHz to 270 GHz with total de...

  19. Gauged M-flation after BICEP2

    Directory of Open Access Journals (Sweden)

    A. Ashoorioon

    2014-12-01

    Full Text Available In view of the recent BICEP2 results [arXiv:1403.3985] which may be attributed to the observation of B-modes polarization of the CMB with tensor-to-scalar ratio r=0.2−0.05+0.07, we revisit M-flation model. Gauged M-flation is a string theory motivated inflation model with Matrix valued scalar inflaton fields in the adjoint representation of a U(N Yang–Mills theory. In continuation of our previous works, we show that for a class of M-flation models the action for these inflaton fields can be such that the “effective inflaton field” ϕ has a double-well Higgs-like potential, with minima at ϕ=0,μ. We focus on the ϕ>μ, symmetry-breaking region. We thoroughly examine predictions of the model for r in the 2σ region allowed for nS by the Planck experiment. As computed in [arXiv:0903.1481], for Ne=60 and nS=0.96 we find r≃0.2, which sits in the sweet spot of BICEP2 region for r. We find that with increasing μ arbitrarily, nS cannot go beyond ≃0.9670, the scalar spectral index for the quadratic chaotic potential. As nS varies in the 2σ range which is allowed by Planck and could be reached by the model, r varies in the range [0.13,0.26]. Future cosmological experiments, like the CMBPOL, that confines nS with σ(nS=0.0029 can constrain the model further. Also, in this region of potential, for nS=0.9603, we find that the largest isocurvature mode, which is uncorrelated with curvature perturbations, has a power spectrum with the amplitude of order 10−11 at the end of inflation. We also discuss the range of predictions of r in the hilltop region, ϕ<μ.

  20. Variation of tension in the long head of the biceps tendon as a function of limb position with simulated biceps contraction

    Directory of Open Access Journals (Sweden)

    Gramstad Gregory

    2010-01-01

    Full Text Available Purpose: This study was designed to quantify tensile forces within the intra-articular long head of the bicep tendon (LHBT under conditions of passive limb positioning and physiologic load, which simulate contraction of the LHBT. Materials and Methods: A force probe was inserted into the intra-articular LHBT, just distal to its supra-glenoid origin, in six fresh-frozen cadaveric specimens. Initially, specimens were manually manipulated through 30 glenohumeral joint positions, combining humeral rotation and elbow/forearm position. In the second phase, a 55 N tensile load was applied through the LHBT in 18 limb positions. Intra-tendinous tension was recorded in all positions under both conditions. Results: External humeral rotation significantly increased tension with glenohumeral forward flexion (P<0.0001. Conversely, internal humeral rotation significantly increased tension with glenohumeral abduction and extension (P<0.0001. A position of glenohumeral extension and internal rotation, with the elbow extended and forearm pronated, produced the highest tension in the intra-articular LHBT (P<0.0001. Under applied load conditions, observed LHTB tension was not statistically different in any glenohumeral position (P=0.1468, power = 88%. The greater tuberosity was noted to impinge on the force probe in forward flexion and internal rotation in two specimens. Conclusions: Variable tensile forces are seen in the intra-articular LHBT as a function of both limb position and simulated biceps contraction. Our findings provide a thorough data set that may be used to help substantiate or refute current or future hypotheses regarding LHBT function, pathology, and clinical tests. Clinical Relevance: Identifying positions of glenohumeral motion, which affect LHBT tension will provide an anatomic basis for clinical tests proposed to be for diagnosing LHBT lesions, including superior labral anterior and posterior tears.

  1. Variation of tension in the long head of the biceps tendon as a function of limb position with simulated biceps contraction

    Science.gov (United States)

    Gramstad, Gregory G.; Sears, Benjamin W.; Marra, Guido

    2010-01-01

    Purpose: This study was designed to quantify tensile forces within the intra-articular long head of the bicep tendon (LHBT) under conditions of passive limb positioning and physiologic load, which simulate contraction of the LHBT. Materials and Methods: A force probe was inserted into the intra-articular LHBT, just distal to its supra-glenoid origin, in six fresh-frozen cadaveric specimens. Initially, specimens were manually manipulated through 30 glenohumeral joint positions, combining humeral rotation and elbow/forearm position. In the second phase, a 55 N tensile load was applied through the LHBT in 18 limb positions. Intra-tendinous tension was recorded in all positions under both conditions. Results: External humeral rotation significantly increased tension with glenohumeral forward flexion (P<0.0001). Conversely, internal humeral rotation significantly increased tension with glenohumeral abduction and extension (P<0.0001). A position of glenohumeral extension and internal rotation, with the elbow extended and forearm pronated, produced the highest tension in the intra-articular LHBT (P<0.0001). Under applied load conditions, observed LHTB tension was not statistically different in any glenohumeral position (P=0.1468, power = 88%). The greater tuberosity was noted to impinge on the force probe in forward flexion and internal rotation in two specimens. Conclusions: Variable tensile forces are seen in the intra-articular LHBT as a function of both limb position and simulated biceps contraction. Our findings provide a thorough data set that may be used to help substantiate or refute current or future hypotheses regarding LHBT function, pathology, and clinical tests. Clinical Relevance: Identifying positions of glenohumeral motion, which affect LHBT tension will provide an anatomic basis for clinical tests proposed to be for diagnosing LHBT lesions, including superior labral anterior and posterior tears. PMID:20922087

  2. Distal and non-distal NIP theories

    CERN Document Server

    Simon, Pierre

    2011-01-01

    We study one way in which stable phenomena can exist in an NIP theory. We start by defining a notion of 'pure instability' that we call 'distality' in which no such phenomenon occurs. O-minimal theories and the p-adics for example are distal. Next, we try to understand what happens when distality fails. Given a type p over a sufficiently saturated model, we extract, in some sense, the stable part of p and define a notion of stable-independence which is implied by non-forking and has bounded weight. As an application, we show that the expansion of a model by traces of externally definable sets from some adequate indiscernible sequence eliminates quantifiers.

  3. Distal nail embbeding

    Directory of Open Access Journals (Sweden)

    Patricia Chang

    2014-01-01

    Full Text Available Male patient, 35 years old who came to dermatological consultation due to contact dermatitis on back, during his clinical examination alterations of his digits was seen. Dermatological examination reveals a rim of tissue at the distal edge of the nail of both big toenails and thickened nails (Fig.1a – c, 2a, b. Both big toenails were removed due to ingrown nails two times. Diagnosis of distal nail embedding was done. Distal nail embedding is a rim of tissue at the distal edge of the nail. Causes can de acquired or congenital.

  4. Pictorial essay: Distal colostography

    Directory of Open Access Journals (Sweden)

    Rahalkar Mukund

    2010-01-01

    Full Text Available Distal colostography (DC, also called distal colography or loopography, is an important step in the reparative management of anorectal malformations (ARMs with imperforate anus, Hirschsprung′s disease (occasionally and colonic atresia (rarely in children and obstructive disorders of the distal colon (colitis with stricture, carcinoma or complicated diverticulosis in adults. It serves to identify/confirm the type of ARM, presence/absence of fistulae, leakage from anastomoses, or patency of the distal colon. We present a pictorial essay of DC in a variety of cases.

  5. bicep2/KECK ARRAY. IV. OPTICAL CHARACTERIZATION AND PERFORMANCE OF THE bicep2 AND KECK ARRAY EXPERIMENTS

    Energy Technology Data Exchange (ETDEWEB)

    Ade, P. A. R. [School of Physics and Astronomy, Cardiff University, Cardiff, CF24 3AA (United Kingdom); Aikin, R. W.; Bock, J. J.; Brevik, J. A.; Filippini, J. P.; Golwala, S. R.; Hildebrandt, S. R.; Hui, H. [Department of Physics, California Institute of Technology, Pasadena, CA 91125 (United States); Barkats, D. [Joint ALMA Observatory, ESO, Santiago (Chile); Benton, S. J. [Department of Physics, University of Toronto, Toronto, ON (Canada); Bischoff, C. A.; Bradford, K. J.; Buder, I. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS 42, Cambridge, MA 02138 (United States); Bullock, E. [Minnesota Institute for Astrophysics, University of Minnesota, Minneapolis, MN 55455 (United States); Dowell, C. D. [Jet Propulsion Laboratory, Pasadena, CA 91109 (United States); Duband, L. [Université Grenoble Alpes, CEA INAC-SBT, F-38000 Grenoble (France); Fliescher, S. [Department of Physics, University of Minnesota, Minneapolis, MN 55455 (United States); Halpern, M.; Hasselfield, M. [Department of Physics and Astronomy, University of British Columbia, Vancouver, BC (Canada); Hilton, G. C., E-mail: avieregg@kicp.uchicago.edu [National Institute of Standards and Technology, Boulder, CO 80305 (United States); Collaboration: bicep2 and Keck Array Collaborations; and others

    2015-06-20

    bicep2 and the Keck Array are polarization-sensitive microwave telescopes that observe the cosmic microwave background (CMB) from the South Pole at degree angular scales in search of a signature of inflation imprinted as B-mode polarization in the CMB. bicep2 was deployed in late 2009, observed for three years until the end of 2012 at 150 GHz with 512 antenna-coupled transition edge sensor bolometers, and has reported a detection of B-mode polarization on degree angular scales. The Keck Array was first deployed in late 2010 and will observe through 2016 with five receivers at several frequencies (95, 150, and 220 GHz). bicep2 and the Keck Array share a common optical design and employ the field-proven bicep1 strategy of using small-aperture, cold, on-axis refractive optics, providing excellent control of systematics while maintaining a large field of view. This design allows for full characterization of far-field optical performance using microwave sources on the ground. Here we describe the optical design of both instruments and report a full characterization of the optical performance and beams of bicep2 and the Keck Array at 150 GHz.

  6. Anatomy of the long head of biceps femoris: An ultrasound study.

    Science.gov (United States)

    Tosovic, D; Muirhead, J C; Brown, J M M; Woodley, S J

    2016-09-01

    Hamstring strains, particularly involving the long head of biceps femoris (BFlh) at the proximal musculotendinous junction (MTJ), are commonly experienced by athletes. With the use of diagnostic ultrasound increasing, an in-depth knowledge of normal ultrasonographic anatomy is fundamental to better understanding hamstring strain. The aim of this study was to describe the architecture of BFlh, using ultrasonography, in young men and cadaver specimens. BFlh morphology was examined in 19 healthy male participants (mean age 21.6 years) using ultrasound. Muscle, tendon and MTJ lengths were recorded and architectural parameters assessed at four standardised points along the muscle. Measurement accuracy was validated by ultrasound and dissection of BFlh in six male cadaver lower limbs (mean age 76 years). Intra-rater reliability of architectural parameters was examined for repeat scans, image analysis and dissection measurements. Distally the BFlh muscle had significantly (P MTJ length. All other measures demonstrated good-excellent repeatability. BFlh is not uniform in architecture when imaged using ultrasound. It is likely that its distal-most segment is better suited for force production in comparison to the more proximal segments, which show excursive potential, traits which possibly contribute to the high rate of injury at the proximal MTJ. The data presented in this study provide specific knowledge of the normal ultrasonographic anatomy of BFlh, which should be of assistance in analysing BFlh injury via imaging. Clin. Anat. 29:738-745, 2016. © 2016 Wiley Periodicals, Inc. © 2016 Wiley Periodicals, Inc.

  7. BICEP2. II. Experiment and three-year data set

    Energy Technology Data Exchange (ETDEWEB)

    Ade, P. A. R. [School of Physics and Astronomy, Cardiff University, Cardiff, CF24 3AA (United Kingdom); Aikin, R. W.; Bock, J. J.; Brevik, J. A.; Filippini, J. P.; Golwala, S. R.; Hildebrandt, S. R. [Department of Physics, California Institute of Technology, Pasadena, CA 91125 (United States); Amiri, M.; Davis, G.; Halpern, M.; Hasselfield, M. [Department of Physics and Astronomy, University of British Columbia, Vancouver, BC (Canada); Barkats, D. [Joint ALMA Observatory, ESO, Santiago (Chile); Benton, S. J. [Department of Physics, University of Toronto, Toronto, ON (Canada); Bischoff, C. A.; Buder, I. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS 42, Cambridge, MA 02138 (United States); Bullock, E. [Minnesota Institute for Astrophysics, University of Minnesota, Minneapolis, MN 55455 (United States); Day, P. K.; Dowell, C. D. [Jet Propulsion Laboratory, Pasadena, CA 91109 (United States); Duband, L. [Université Grenoble Alpes, CEA INAC-SBT, F-38000 Grenoble (France); Fliescher, S., E-mail: ogburn@stanford.edu [Department of Physics, University of Minnesota, Minneapolis, MN 55455 (United States); Collaboration: Bicep2 Collaboration; and others

    2014-09-01

    We report on the design and performance of the BICEP2 instrument and on its three-year data set. BICEP2 was designed to measure the polarization of the cosmic microwave background (CMB) on angular scales of 1°-5°(ℓ = 40-200), near the expected peak of the B-mode polarization signature of primordial gravitational waves from cosmic inflation. Measuring B-modes requires dramatic improvements in sensitivity combined with exquisite control of systematics. The BICEP2 telescope observed from the South Pole with a 26 cm aperture and cold, on-axis, refractive optics. BICEP2 also adopted a new detector design in which beam-defining slot antenna arrays couple to transition-edge sensor (TES) bolometers, all fabricated on a common substrate. The antenna-coupled TES detectors supported scalable fabrication and multiplexed readout that allowed BICEP2 to achieve a high detector count of 500 bolometers at 150 GHz, giving unprecedented sensitivity to B-modes at degree angular scales. After optimization of detector and readout parameters, BICEP2 achieved an instrument noise-equivalent temperature of 15.8 μK√s. The full data set reached Stokes Q and U map depths of 87.2 nK in square-degree pixels (5.'2 μK) over an effective area of 384 deg{sup 2} within a 1000 deg{sup 2} field. These are the deepest CMB polarization maps at degree angular scales to date. The power spectrum analysis presented in a companion paper has resulted in a significant detection of B-mode polarization at degree scales.

  8. Distal spinal muscular atrophy and ophthalmoparesis. A case with selective type 2 fiber hypotrophy.

    Science.gov (United States)

    Dubrovsky, A; Taratuto, A L; Martino, R

    1981-09-01

    A patient had distal muscular atrophy involving the upper and lower extremities, ptosis of the lid, and ophthalmoparesis and cataracts. Muscle histochemistry and electromyographic examination showed lower motor neuron involvement. This case is similar to others described in the literature and designated as distal spinal muscular atrophy. The unique association with ophthalmologic signs can be considered either as a variant form of the disease or as a separate entity. Muscle biopsy showed selective type 2 muscle fiber hypotrophy in the biceps. A second biopsy specimen of the quadriceps showed type grouping with persistence of small type 2 fibers, suggesting that reinnervation capability is independent of neuronal trophic influence.

  9. CMB polarimetry with BICEP: instrument characterization, calibration, and performance

    CERN Document Server

    Takahashi, Yuki D; Battle, John O; Bierman, Evan M; Bock, James J; Chiang, H Cynthia; Dowell, C Darren; Hivon, Eric F; Holzapfel, William L; Hristov, Viktor V; Jones, William C; Kaufman, J P; Keating, Brian G; Kovac, John M; Kuo, Chao-Lin; Lange, Andrew E; Leitch, Erik M; Mason, Peter V; Matsumura, Tomotake; Nguyen, Hien T; Ponthieu, Nicolas; Rocha, Graca M; Yoon, Ki Won; Ade, P; Duband, L

    2008-01-01

    BICEP is a ground-based millimeter-wave bolometric array designed to target the primordial gravity wave signature on the polarization of the cosmic microwave background (CMB) at degree angular scales. Currently in its third year of operation at the South Pole, BICEP is measuring the CMB polarization with unprecedented sensitivity at 100 and 150 GHz in the cleanest available 2% of the sky, as well as deriving independent constraints on the diffuse polarized foregrounds with select observations on and off the Galactic plane. Instrument calibrations are discussed in the context of rigorous control of systematic errors, and the performance during the first two years of the experiment is reviewed.

  10. Tree Level Potential on Brane after Planck and BICEP2

    Indian Academy of Sciences (India)

    M. Ferricha-Alami; A. Safsafi; L. Lahlou; H. Chakir; M. Bennai

    2015-06-01

    The recent detection of degree scale B-mode polarization in the Cosmic Microwave Background (CMB) by the BICEP2 experiment implies that the inflationary ratio of tensor-to-scalar fluctuations is = 0.2$^{+0.07}_{-0.05}$, which has opened a new window in the cosmological investigation. In this regard, we propose a study of the tree level potential inflation in the framework of the Randall–Sundrum type-2 braneworld model. We focus on three branches of the potential, where we evaluate some values of brane tension . We discuss how the various inflationary perturbation parameters can be compatible with recent Planck and BICEP2 observations.

  11. Quantitative Diagnostic Method for Biceps Long Head Tendinitis by Using Ultrasound

    OpenAIRE

    Shih-Wei Huang; Wei-Te Wang

    2013-01-01

    Objective. To investigate the feasibility of grayscale quantitative diagnostic method for biceps tendinitis and determine the cut-off points of a quantitative biceps ultrasound (US) method to diagnose biceps tendinitis. Design. Prospective cross-sectional case controlled study. Setting. Outpatient rehabilitation service. Methods. A total of 336 shoulder pain patients with suspected biceps tendinitis were recruited in this prospective observational study. The grayscale pixel data of the range ...

  12. Tendinopathy of the long head of the biceps tendon: histopathologic analysis of the extra-articular biceps tendon and tenosynovium

    Directory of Open Access Journals (Sweden)

    Streit JJ

    2015-03-01

    Full Text Available Jonathan J Streit,1 Yousef Shishani,1 Mark Rodgers,2 Reuben Gobezie1 1The Cleveland Shoulder Institute, 2Department of Pathology, University Hospitals of Cleveland, Cleveland, OH, USA Background: Bicipital tendinitis is a common cause of anterior shoulder pain, but there is no evidence that acute inflammation of the extra-articular long head of the biceps (LHB tendon is the root cause of this condition. We evaluated the histologic findings of the extra-articular portion of the LHB tendon and synovial sheath in order to compare those findings to known histologic changes seen in other tendinopathies. Methods: Twenty-six consecutive patients (mean age 45.4±13.7 years underwent an open subpectoral biceps tenodesis for anterior shoulder pain localized to the bicipital groove. Excised tendons were sent for histologic analysis. Specimens were graded using a semiquantitative scoring system to evaluate tenocyte morphology, the presence of ground substance, collagen bundle characteristics, and vascular changes. Results: Chronic inflammation was noted in only two of 26 specimens, and no specimen demonstrated acute inflammation. Tenocyte enlargement and proliferation, characterized by increased roundness and size of the cell and nucleus with proteoglycan matrix expansion and myxoid degenerative changes, was found in all 26 specimens. Abundant ground substance, collagen bundle changes, and increased vascularization were visualized in all samples. Conclusion: Anterior shoulder pain attributed to the biceps tendon does not appear to be due to an inflammatory process in most cases. The histologic findings of the extra-articular portion of the LHB tendon and synovial sheath are similar to the pathologic findings in de Quervain tenosynovitis at the wrist, and may be due to a chronic degenerative process similar to this and other tendinopathies of the body. Keywords: biceps tendinitis, biceps tendinopathy, tenosynovium, anterior shoulder pain, long head biceps

  13. Quality traits of pork semimembranosus and triceps brachii muscles sourced from the United States and Mexico.

    Science.gov (United States)

    Delgado-Suárez, E J; Rubio-Lozano, M S; Toledo-López, V M; Torrescano-Urrutia, G R; Ponce-Alquicira, E; Huerta-Leidenz, N

    2016-12-01

    The study included fresh pork semimembranosus (SM, n=289) and triceps brachii (TB, n=283) muscles sourced from meat packers of Mexico and the USA. Samples were analyzed for moisture, protein, and fat content, pH, shear force (WBSF), cook loss, water holding capacity (WHC), instrumental color, emulsion capacity (EC) and stability (ES), and consumer sensory ratings. SM from the USA had lower WBSF (P0.05) across countries. TB from Mexico had higher (Pcountry of origin has less effect on consumer acceptability.

  14. Intracapsular origin of the long head of the biceps tendon

    Energy Technology Data Exchange (ETDEWEB)

    Yeh, L.R. [Department of Radiology, Veterans Affairs Medical Center, San Diego, CA (United States)]|[Department of Radiology, Kaohsiung Veterans General Hospital, Kaohsiung (Taiwan, Province of China); Pedowitz, R. [Department of Orthopedics, Veterans Affairs Medical Center, San Diego, CA (United States); Kwak, S.; Muhle, C.; Trudell, D.; Resnick, D. [Department of Radiology, Veterans Affairs Medical Center, San Diego, CA (United States); Haghighi, P. [Department of Pathology, Veterans Affairs Medical Center, San Diego, CA (United States)

    1999-03-01

    A developmental anomaly of the long head of the biceps tendon was found in a cadaveric shoulder. Findings on arthroscopy, routine MR imaging, and MR arthrography were compared and correlated with results of anatomic dissection. MR arthrography appears to be a very good diagnostic imaging method for depicting this anomaly prior to arthroscopy. (orig.) With 3 figs., 8 refs.

  15. The effect of elbow position on biceps tendon reflex

    Directory of Open Access Journals (Sweden)

    Keles Isik

    2004-07-01

    Full Text Available Background: Testing of tendon (T reflex is the basic method used in the diagnostic procedure of clinical neurology. Measurement of T reflexes precisely can be a valuable adjunct to clinical examination. Quantification of T reflexes may provide more accurate results. Aims: To analyze the effect of elbow position on biceps T reflex. Settings and Design: A self-controlled clinical trial of biceps T reflex testing at the Electrophysiology Unit of the Department of Physical Medicine and Rehabilitation. Methods and Materials: Biceps T reflex was obtained utilizing a hand-held electronic reflex hammer in 50 extremities of 25 healthy volunteers and the effect of elbow position (at 90°, 120° and 150° on reflex response was evaluated. Statistical Analysis: Repeated-measures analysis of variance by the General Linear Model and Pearson correlation test procedures. Results: Onset latency was significantly shorter at 120° of elbow position. The maximum amplitude value of biceps T reflex was obtained at 90° of elbow position. Onset latency of the reflex correlated significantly with the height and arm length but not with age. Conclusions: The electrophysiological measurement of T reflexes is an easy and useful method in the quantification of reflexes, supplying more objective data. However, when performing T reflex studies, the position of the extremity should be taken into consideration to achieve more reliable results.

  16. Distal Radius Fracture (Broken Wrist)

    Science.gov (United States)

    .org Distal Radius Fracture (Broken Wrist) Page ( 1 ) The radius is the larger of the two bones of the forearm. The ... the distal end. A fracture of the distal radius occurs when the area of the radius near ...

  17. Combined Ultrasound Imaging and Biomechanical Modeling to Estimate Triceps Brachii Musculotendon Changes in Stroke Survivors

    Directory of Open Access Journals (Sweden)

    Le Li

    2016-01-01

    Full Text Available The aim of this study was to investigate the changes of musculotendon parameters of triceps brachii in persons after stroke based on subject-specific biomechanical modeling technique combined with in vivo ultrasound measurement. Five chronic stroke survivors and five normal control subjects were recruited. B-mode ultrasound was applied to measure muscle pennation angle and the optimal length of three heads of triceps’ brachii at different joint angle positions in resting and isometric contraction. Measured ultrasound data were used to reduce the unknown parameters during the modeling optimization process. The results showed that pennation angles varied with joint angles, and the longhead TRI pennation from stroke group was smaller than the literature value. The maximum isometric muscle stress from persons after stroke was significantly smaller than that found in the unimpaired subjects. The prediction of joint torque fits well with the measured data from the control group, whereas the prediction error is larger in results from persons after stroke. In vivo parameters from ultrasound data could help to build a subject-specific biomechanical model of elbow extensor for both unimpaired and hemiplegic subjects, and then the results driven from the model could enhance the understanding of motor function changes for persons after stroke.

  18. Distally Based Iliotibial Band Flap: Anatomic Study with Surgical Considerations.

    Science.gov (United States)

    Wong, Victor W; Higgins, James P

    2016-09-01

    Background Reconstruction of high-risk fascia, tendon, or ligament defects may benefit from vascularized tissue. The iliotibial band (ITB), a thick fibrous tract of connective tissue, serves as a potential donor site for free tissue transfer but its blood supply has not been thoroughly investigated. The aim of this anatomical study was to investigate the vascular supply to the distal ITB and its role as a free fascial flap. Methods We dissected 16 fresh-frozen cadaveric legs and injected latex into the superolateral geniculate artery (SLGA). A distal ITB fascial flap was designed and measurements were taken for flap dimensions, pedicle length and size, and SLGA perfusion territory. Results The SLGA perfused 11.5 ± 2.3 cm of distal ITB (proximal to the lateral femoral epicondyle) and provided 6.4 ± 0.7cm of pedicle length to the ITB flap. Conclusions Chimeric options to include bone (from the lateral femoral condyle), cartilage (from the lateral femoral trochlea), muscle (from vastus lateralis or biceps femoris), and skin are possible. Surgical harvest techniques are proposed, including preservation of ITB insertions to minimize lateral knee instability. Clinical validation is needed to determine the role of the distal ITB free fascial flap in reconstructive microsurgery.

  19. Improving the accuracy of the preoperative diagnosis of long head of the biceps pathology: the biceps resisted flexion test

    Science.gov (United States)

    ARRIGONI, PAOLO; RAGONE, VINCENZA; D’AMBROSI, RICCARDO; DENARD, PATRICK; RANDELLI, FILIPPO; BANFI, GIUSEPPE; CABITZA, PAOLO; RANDELLI, PIETRO

    2014-01-01

    Purpose the purpose of this study was to describe a new test for identifying lesions of the long head of the biceps (LHB) and to evaluate its diagnostic performance in comparison with selected traditional clinical tests. Methods one hundred and nine consecutive candidates for arthroscopic rotator cuff repair were prospectively recruited. The BRF test, which measures biceps resisted flexion strength, was performed with the patient seated (armat the side and elbow flexed at 90°). The patient was asked to maintain maximal resistance for five seconds while strength was assessed with a digital dynamometer. Since the dynamometer expresses a continuous variable in kilograms, the measure was dichotomized using a threshold value (cut-off) value-able to simultaneously maximize the sensitivity and specificity. This cut-off value was derived from receiver operating characteristic (ROC) curve analysis. Speed’s test and the O’Brien test were also performed. During arthroscopy the presence of LHB pathology was assessed. Results biceps resisted flexion strength was significantly higher in patients without associated LHB lesions [median (range): 3 kg (0–9.5 kg) versus 0 kg (0–8.5 kg); plesions. Conclusions the dBRF test showed higher accuracy than traditional clinical tests in diagnosing LHB lesions. This novel test for biceps pathology may be advantageous because it is objective and therefore likely reproducible. Level of Evidence Level II, Development of diagnostic test on basis of consecutive patients (with universally applied reference “gold” standard). PMID:25606543

  20. Slap Lesions in Middle-aged Patients: Biceps Repair or Tenodesis? What Should We Perform for Long Biceps Tendon?

    Directory of Open Access Journals (Sweden)

    Sergi Sastre

    2015-12-01

    Conclusion: Biceps tenodesis is a feasible therapeutic alternative to anatomical repair for the treatment of SLAP lesions in middle-aged patients; the reinsertion failure rates for this type of lesion are rather discouraging due to the high percentage of revision surgeries that must be carried out after the primary intervention.

  1. Transphyseal Distal Humerus Fracture.

    Science.gov (United States)

    Abzug, Joshua; Ho, Christine Ann; Ritzman, Todd F; Brighton, Brian

    2016-01-01

    Transphyseal distal humerus fractures typically occur in children younger than 3 years secondary to birth trauma, nonaccidental trauma, or a fall from a small height. Prompt and accurate diagnosis of a transphyseal distal humerus fracture is crucial for a successful outcome. Recognizing that the forearm is not aligned with the humerus on plain radiographs may aid in the diagnosis of a transphyseal distal humerus fracture. Surgical management is most commonly performed with the aid of an arthrogram. Closed reduction and percutaneous pinning techniques similar to those used for supracondylar humerus fractures are employed. Cubitus varus caused by a malunion, osteonecrosis of the medial condyle, or growth arrest is the most common complication encountered in the treatment of transphyseal distal humerus fractures. A corrective lateral closing wedge osteotomy can be performed to restore a nearly normal carrying angle.

  2. Giant distal humeral geode

    Energy Technology Data Exchange (ETDEWEB)

    Maher, M.M. [Department of Radiology, Mater Misericordiae Hospital, Dublin (Ireland); Department of Radiology, St. Vincent' s Hospital, Elm Park, Dublin 4 (Ireland); Kennedy, J.; Hynes, D. [Department of Orthopaedics, Mater Misericordiae Hospital, Dublin (Ireland); Murray, J.G.; O' Connell, D. [Department of Radiology, Mater Misericordiae Hospital, Dublin (Ireland)

    2000-03-30

    We describe the imaging features of a giant geode of the distal humerus in a patient with rheumatoid arthritis, which presented initially as a pathological fracture. The value of magnetic resonance imaging in establishing this diagnosis is emphasized. (orig.)

  3. Distal splenorenal shunt

    Science.gov (United States)

    ... path. As a result, swollen blood vessels called varices form. They develop thin walls that can break ... or x-rays show that you have bleeding varices. Distal splenorenal shunt surgery reduces pressure on the ...

  4. Distal humeral epiphyseal separation.

    Science.gov (United States)

    Moucha, Calin S; Mason, Dan E

    2003-10-01

    Distal humeral epiphyseal separation is an uncommon injury that is often misdiagnosed upon initial presentation. To make a timely, correct diagnosis, the treating physician must have a thorough understanding of basic anatomical relationships and an awareness of the existence of this injury. This is a case of a child who sustained a separation of the distal humeral epiphysis, as well as multiple other bony injuries, secondary to child abuse.

  5. Gravitational quantum effects in the light of BICEP2 results

    CERN Document Server

    Zhu, Tao

    2014-01-01

    Recently BICEP2 found that the vanishing of the tensor-to-scalar ratio $r$ is excluded at $7\\sigma$ level, and its most likely value is $r=0.2^{+0.07}_{-0.05}$ at $1 \\sigma$ level. This immediately causes a tension with the Planck constraint $r < 0.11$. In addition, it also implies that the inflaton experienced a Planck excursion during inflation $\\Delta\\phi /M_{Pl} \\geq {\\cal{O}}(1)$, whereby the effective theory of inflation becomes questionable. In this brief report, we show that the inflationary paradigm is still robust, even after the quantum effects are taken into account. Moreover, these effects even help to relax the tension on the different values of $r$ given by BICEP2 and Planck.

  6. Local Reconstruction of the Inflationary Potential with BICEP2 data

    CERN Document Server

    Ma, Yin-Zhe

    2014-01-01

    We locally reconstruct the inflationary potential by using the current constraints on $r$ and $n_{\\rm s}$ from BICEP2 data. Assuming small and negligible $\\alpha_{\\rm s}$, the inflationary potential is approximately linear in $\\Delta\\phi\\sim M_{\\rm pl}$ range but becomes non-linear in $\\Delta\\phi\\sim 10 M_{\\rm pl}$ range. However if we allow for higher value of $\\alpha_{\\rm s}$, as suggested by the tension between BICEP2 and WMAP / Planck measurements, the local reconstruction is only valid in the range of $\\Delta\\phi\\sim 0.4 M_{\\rm pl}$, which challenges the inflationary background from the point of view of effective field theory.

  7. Free Biceps Tendon Autograft to Augment Arthroscopic Rotator Cuff Repair

    OpenAIRE

    Obma, Padraic R.

    2013-01-01

    Arthroscopic rotator cuff repairs have become the standard of treatment for all sizes of tears over the past several years. Current healing rates reported in the literature are quite good, but improving the healing potential of rotator cuff repairs remains a challenging problem. There has been an increase recently in the use of augmentation of rotator cuff repairs with xenografts or synthetics for large and massive tears. Biceps tenodesis is often indicated as part of the treatment plan while...

  8. Inflation After False Vacuum Decay: New Evidence from BICEP2

    CERN Document Server

    Bousso, Raphael; Senatore, Leonardo

    2014-01-01

    Last year we argued that if slow-roll inflation followed the decay of a false vacuum in a large landscape, the steepening of the scalar potential between the inflationary plateau and the barrier generically leads to a potentially observable suppression of the scalar power spectrum at large distances. Here we revisit this analysis in light of the recent BICEP2 results. Assuming that both the BICEP2 B-mode signal and the Planck analysis of temperature fluctuations hold up, we find that the data now discriminate more sharply between our scenario and $\\Lambda$CDM. Nonzero tensor modes exclude standard $\\Lambda$CDM with notable but not yet conclusive confidence: at $\\sim 3.8\\,\\sigma$ if $r\\approx0.2$, or at $\\sim 3.5\\,\\sigma$ if $r=0.15$. Of the two steepening models of our previous work, one is now ruled out by existing bounds on spatial curvature. The other entirely reconciles the tension between BICEP2 and Planck. Upcoming $EE$ polarization measurements have the potential to rule out unmodified $\\Lambda$CDM dec...

  9. Evidence for bouncing evolution before inflation after BICEP2.

    Science.gov (United States)

    Xia, Jun-Qing; Cai, Yi-Fu; Li, Hong; Zhang, Xinmin

    2014-06-27

    The BICEP2 Collaboration reports a detection of primordial cosmic microwave background (CMB) B mode with a tensor-to-scalar ratio r = 0.20(-0.05)(+0.07) (68% C.L.). However, this result disagrees with the recent Planck limit r inflation models. In this Letter we consider an inflationary cosmology with a preceding nonsingular bounce, which gives rise to observable signatures on primordial perturbations. One interesting phenomenon is that both the primordial scalar and tensor modes can have a step feature on their power spectra, which nicely cancels the tensor excess power on the CMB temperature power spectrum. By performing a global analysis, we obtain the 68% C.L. constraints on the parameters of the model from the Planck+WP and BICEP2 data together: the jump scale log(10)(k(B)/Mpc(-1)) = -2.4 ± 0.2 and the spectrum amplitude ratio of bounce to inflation r(B) ≡ P(m)/A(s) = 0.71 ± 0.09. Our result reveals that the bounce inflation scenario can simultaneously explain the Planck and BICEP2 observations better than the standard cold dark matter model with a cosmological constant, and can be verified by future CMB polarization measurements.

  10. Long head of biceps: from anatomy to treatment.

    Science.gov (United States)

    Sarmento, M

    2015-01-01

    The long head of the biceps (LHB), tendinous structure of the proximal brachial biceps, has its well-known anatomy, which contrasts with its current functional characterization. Various forms of proximal anchor and intra-articular route, important for the correct interpretation of its contribution to the pathology of the shoulder as well as the treatment methodology, are described. Knowledge of its biomechanics results mainly from cadaveric studies that contradict each other. Already the few studies in vivo indicate a depressant and stabilizing action, anterior, for the humeral head. Its pathology is rarely isolated because it is almost always correlated with rotator cuff or labrum pathology. It can be divided into 3 major groups (inflammatory, instability and traumatic) and subdivided according to its location. The anterior shoulder pain is the initial symptom of pathology of LHB Its perfect characterization is dependent on the associated injuries. Clinical tests are multiple and only their combination allows better sensitivity and specificity for LHB pathology. The arthro-MRI and dynamic ultrasound are able to increase proper diagnostic of the pathology of LHB. Treatment ranges from conservative and surgical. The latter includes the repair, tenotomy and tenodesis of LHB which can be performed by open or arthroscopic methodology. The author intends to review existing literature on all aspects related to the long head of the biceps from anatomy to treatment, presenting the latest results.

  11. Tendinopathy of the long head of the biceps tendon: histopathologic analysis of the extra-articular biceps tendon and tenosynovium

    OpenAIRE

    Streit JJ; Shishani Y; Rodgers M; Gobezie R

    2015-01-01

    Jonathan J Streit,1 Yousef Shishani,1 Mark Rodgers,2 Reuben Gobezie1 1The Cleveland Shoulder Institute, 2Department of Pathology, University Hospitals of Cleveland, Cleveland, OH, USA Background: Bicipital tendinitis is a common cause of anterior shoulder pain, but there is no evidence that acute inflammation of the extra-articular long head of the biceps (LHB) tendon is the root cause of this condition. We evaluated the histologic findings of the extra-articular portion of the LHB tendon an...

  12. BICEP2/SPUD: Searching for Inflation with Degree Scale Polarimetry from the South Pole

    Science.gov (United States)

    Nguyen, Hien Trong; Kovac, John; Adec, Peter; Aikin, Randol; Benton, Steve; Bock, Jamie; Brevik, Justus; Carlstrom, John; Dowell, Darren; Duband, Lionel; Golwala, Sunil; Halpern, Mark; Hasselfield, Matthew; Irwin, Kent; Jones, William; Kaufman, Jonathan; Keating, Brian; Kuo, Chao-Lin; Lange, Andrew; Matsumura, Tomotake; Netterfield, Barth; Pryke, Clem; Ruhl, John; Sheehy, Chris; Sudiwala, Rashmi

    2008-01-01

    BICEP2/SPUD is the new powerful upgrade of the existing BICEP1 experiment, a bolometric receiver to study the polarization of the cosmic microwave background radiation, which has been in operation at the South Pole since January 2006. BICEP2 will provide an improvement up to 10 times mapping speed at 150 GHz compared to BICEP1, using the same BICEP telescope mount. SPUD, a series of compact, mechanically-cooled receivers deployed on the DASI mount at the Pole, will provide similar mapping speed in to BICEP2 in three bands, 100, 150, and 220 GHz. The new system will use large TES focal plane arrays to provide unprecedented sensitivity and excellent control of foreground contamination.

  13. BICEP2/SPUD: Searching for Inflation with Degree Scale Polarimetry from the South Pole

    Science.gov (United States)

    Nguyen, Hien Trong; Kovac, John; Adec, Peter; Aikin, Randol; Benton, Steve; Bock, Jamie; Brevik, Justus; Carlstrom, John; Dowell, Darren; Duband, Lionel; hide

    2008-01-01

    BICEP2/SPUD is the new powerful upgrade of the existing BICEP1 experiment, a bolometric receiver to study the polarization of the cosmic microwave background radiation, which has been in operation at the South Pole since January 2006. BICEP2 will provide an improvement up to 10 times mapping speed at 150 GHz compared to BICEP1, using the same BICEP telescope mount. SPUD, a series of compact, mechanically-cooled receivers deployed on the DASI mount at the Pole, will provide similar mapping speed in to BICEP2 in three bands, 100, 150, and 220 GHz. The new system will use large TES focal plane arrays to provide unprecedented sensitivity and excellent control of foreground contamination.

  14. Tendinopathy of the long head of the biceps tendon: histopathologic analysis of the extra-articular biceps tendon and tenosynovium.

    Science.gov (United States)

    Streit, Jonathan J; Shishani, Yousef; Rodgers, Mark; Gobezie, Reuben

    2015-01-01

    Bicipital tendinitis is a common cause of anterior shoulder pain, but there is no evidence that acute inflammation of the extra-articular long head of the biceps (LHB) tendon is the root cause of this condition. We evaluated the histologic findings of the extra-articular portion of the LHB tendon and synovial sheath in order to compare those findings to known histologic changes seen in other tendinopathies. Twenty-six consecutive patients (mean age 45.4±13.7 years) underwent an open subpectoral biceps tenodesis for anterior shoulder pain localized to the bicipital groove. Excised tendons were sent for histologic analysis. Specimens were graded using a semiquantitative scoring system to evaluate tenocyte morphology, the presence of ground substance, collagen bundle characteristics, and vascular changes. Chronic inflammation was noted in only two of 26 specimens, and no specimen demonstrated acute inflammation. Tenocyte enlargement and proliferation, characterized by increased roundness and size of the cell and nucleus with proteoglycan matrix expansion and myxoid degenerative changes, was found in all 26 specimens. Abundant ground substance, collagen bundle changes, and increased vascularization were visualized in all samples. Anterior shoulder pain attributed to the biceps tendon does not appear to be due to an inflammatory process in most cases. The histologic findings of the extra-articular portion of the LHB tendon and synovial sheath are similar to the pathologic findings in de Quervain tenosynovitis at the wrist, and may be due to a chronic degenerative process similar to this and other tendinopathies of the body.

  15. Laparoscopic Distal Pancreatectomy

    Science.gov (United States)

    Melotti, Gianluigi; Butturini, Giovanni; Piccoli, Micaela; Casetti, Luca; Bassi, Claudio; Mullineris, Barbara; Lazzaretti, Maria Grazia; Pederzoli, Paolo

    2007-01-01

    Objective: To describe the clinical characteristics, indications, technical procedures, and outcome of a consecutive series of laparoscopic distal pancreatic resections performed by the same surgical team. Summary Background Data: Laparoscopic distal pancreatic resection has increasingly been described as a feasible and safe procedure, although accompanied by a high rate of conversion and morbidity. Methods: A consecutive series of patients affected by solid and cystic tumors were selected prospectively to undergo laparoscopic distal pancreatectomy performed by the same surgical team. Clinical characteristics as well as diagnostic preoperative assessment and intra- and postoperative data were prospectively recorded. A follow-up of at least 3 months was available for all patients. Results: Fifty-eight patients underwent laparoscopic resection between May 1999 and November 2005. All procedures were successfully performed laparoscopically, and no patient required intraoperative blood transfusion. Splenic vessel preservation was possible in 84.4% of spleen-preserving procedures. There were no mortalities. The overall median hospital stay was 9 days, while it was 10.5 days for patients with postoperative pancreatic fistulae (27.5% of all cases). Follow-up was available for all patients. Conclusions: Our experience in 58 consecutive patients was characterized by the lack of conversions and by acceptable rates of postoperative pancreatic fistulae and morbidity. Laparoscopy proved especially beneficial in patients with postoperative complications as they had a relatively short hospital stay. Solid and cystic tumors of the distal pancreas represent a good indication for laparoscopic resection whenever possible. PMID:17592294

  16. Bilateral congenital absence of the long head of the biceps tendon

    Energy Technology Data Exchange (ETDEWEB)

    Koplas, Monica C. [Cleveland Clinic, Imaging Institute/HB6, Cleveland, OH (United States); Winalski, Carl S. [Cleveland Clinic, Imaging Institute/A21, Cleveland, OH (United States); Ulmer, William H. [Orthopedic and Spine Specialists, York, PA (United States); Recht, Michael [NYU Langone Medical Center, Department of Radiology, New York, NY (United States)

    2009-07-15

    Absence of the long head of the biceps tendon is a rare anomaly particularly when it occurs bilaterally. We present the magnetic resonance and arthroscopy findings in a patient with bilateral congenital absence of the long head of the biceps who presented with bilateral shoulder pain. Identification of a shallow or absent intertubercular groove may aid in differentiating congenital absence of the long head of the biceps from a traumatic tendon rupture. (orig.)

  17. Lateral antebrachial cutaneous neuropathy following the long head of the biceps rupture.

    Science.gov (United States)

    Brogan, David M; Bishop, Allen T; Spinner, Robert J; Shin, Alexander Y

    2012-04-01

    Lateral antebrachial cutaneous neuropathies present as purely sensory lesions, manifesting as elbow pain or dysesthetic pain over the lateral forearm. Classically, entrapment of the lateral antebrachial cutaneous nerve has been documented at the lateral edge of the biceps tendon as it exits the deep fascia in the antecubital fossa. We report a case of lateral antebrachial cutaneous nerve traction neuritis, rather than entrapment, resulting from a rupture of the long head of the biceps. The biceps displaced the nerve laterally, resulting in sensory loss and severe allodynia. The patient's symptoms were relieved with proximal biceps tenodesis.

  18. Quantitative diagnostic method for biceps long head tendinitis by using ultrasound.

    Science.gov (United States)

    Huang, Shih-Wei; Wang, Wei-Te

    2013-01-01

    To investigate the feasibility of grayscale quantitative diagnostic method for biceps tendinitis and determine the cut-off points of a quantitative biceps ultrasound (US) method to diagnose biceps tendinitis. Design. Prospective cross-sectional case controlled study. Outpatient rehabilitation service. A total of 336 shoulder pain patients with suspected biceps tendinitis were recruited in this prospective observational study. The grayscale pixel data of the range of interest (ROI) were obtained for both the transverse and longitudinal views of the biceps US. A total of 136 patients were classified with biceps tendinitis, and 200 patients were classified as not having biceps tendinitis based on the diagnostic criteria. Based on the Youden index, the cut-off points were determined as 26.85 for the transverse view and 21.25 for the longitudinal view of the standard deviation (StdDev) of the ROI values, respectively. When the ROI evaluation of the US surpassed the cut-off point, the sensitivity was 68% and the specificity was 90% in the StdDev of the transverse view, and the sensitivity was 81% and the specificity was 73% in the StdDev of the longitudinal view to diagnose biceps tendinitis. For equivocal cases or inexperienced sonographers, our study provides a more objective method for diagnosing biceps tendinitis in shoulder pain patients.

  19. Biceps tendon sheath effusion as a diagnostic clue to rotator cuff pathology.

    Science.gov (United States)

    Yadav, Pankaj K; Shah, Bhavin; Shende, Amol; Rajesh, S

    2014-02-01

    The objective of this study was to evaluate the role of biceps tendon sheath effusion detected on ultrasound as a diagnostic clue to rotator cuff pathology. Despite being the most common cause of shoulder pain in adults early sonographic changes of rotator cuff tendinopathy are easy to miss. A total of 31 patients out of whom 27 had unilateral shoulder pain and 4 had bilateral complaints under- went ultrasonographic examination of shoulder joint using high frequency linear array transducer. Any fluid surrounding the long head of biceps tendon was noted followed by a careful search for any associated sonographic abnormality involving the rotator cuff. Eighteen out of the 35 had presence of fluid in their biceps tendon sheath. Twelve had presence of both biceps tendon sheath effusion and rotator cuff pathologies. Among 17 patients, who had no fluid in their biceps tendon sheath, only 2 had rotator cuff involvement whereas rest 15 had neither biceps tendon sheath fluid nor rotator cuff pathologies. A significant association was found between presence of fluid in long head of biceps tendon sheath and rotator cuff pathologies. Thus the most common finding observed in association with the presence of fluid around the long head of biceps tendon sheath in this study was tendinosis of rotator cuff. On ultrasonography simple presence of fluid around the long head of biceps tendon sheath demands careful examination of rotator cuff.

  20. Arthroscopic tenodesis in the treatment of long head of biceps tendon lesions%关节镜下肌腱固定术治疗肱二头肌腱近端病损

    Institute of Scientific and Technical Information of China (English)

    高庆峰; 鄂刚; 何耀华; 张尧; 赵金忠; 皇甫小桥; 沈继; 刘闻欣

    2015-01-01

    目的:探讨关节镜下通过肌腱固定术治疗肱二头肌腱近端病损的手术方法及临床效果。方法2010年1月至2012年6月关节镜下通过肌腱固定术治疗肱二头肌腱近端病损49例,患者诊断明确,肱二头肌长头肌腱近端病损为其症状产生的主要原因,其中男性21例,女性28例。年龄37~60岁。分别记录术前及最终随访时疼痛、活动范围、前屈上举肌力以及功能评分,并进行统计学分析。结果所有患者术程顺利,术后顺利愈合并获随访平均18(12~34)个月。术前 Constant 评分为平均39.4分,UCLA 评分为平均15.4分;术后 Constant 评分为平均89.1分,UCLA 评分为平均31.2分。术后与术前相比,在疼痛、活动范围、屈肘、肌力及功能恢复方面差异均有统计学意义(P <0.05)。结论关节镜下通过肌腱固定技术治疗肱二头肌腱近端病损的临床效果满意。%Background The purpose of this study is to evaluate operative technique and clinical results of Arthroscopic Biceps Tenodesis for proximal lesion of the long head of biceps tendon. Methods Inclusion criteria:patient was younger than 60 years old;confirmed diagnosis of proximal lesion of biceps brachii tendon;conservative treatment was failed;biceps tendon lesion was supposed to be the main cause of shoulder symptoms.Exclusion criteria:other shoulder diseases such as neuropathy.From January 2010 to June 2012,49 patients underwent arthroscopic biceps Tenodesis for proximal lesion of long head of biceps tendon using suture anchor technique.There were 21 males and 28 females.Thirty-nine cases were diagnosed as bicipital tendinitis;5 cases as tendon tear;2 cases as biceps tendon instability and tendinitis with tears in 3 cases.Operatiive technique:patients were positioned in lateral decubitus position with 40 degrees of abduction,1 5 degrees of flexion and 4KG longitudinal traction.The viewing portal was routine posterior portal.Arthroscopic gleno-humeral joint

  1. Distal radioulnar joint injuries

    Directory of Open Access Journals (Sweden)

    Binu P Thomas

    2012-01-01

    Full Text Available Distal radioulnar joint is a trochoid joint relatively new in evolution. Along with proximal radioulnar joint , forearm bones and interosseous membrane, it allows pronosupination and load transmission across the wrist. Injuries around distal radioulnar joint are not uncommon, and are usually associated with distal radius fractures,fractures of the ulnar styloid and with the eponymous Galeazzi or Essex_Lopresti fractures. The injury can be purely involving the soft tissue especially the triangular fibrocartilage or the radioulnar ligaments.The patients usually present with ulnar sided wrist pain, features of instability, or restriction of rotation. Difficulty in carrying loads in the hand is a major constraint for these patients. Thorough clinical examination to localize point of tenderness and appropriate provocative tests help in diagnosis. Radiology and MRI are extremely useful, while arthroscopy is the gold standard for evaluation. The treatment protocols are continuously evolving and range from conservative, arthroscopic to open surgical methods. Isolated dislocation are uncommon. Basal fractures of the ulnar styloid tend to make the joint unstable and may require operative intervention. Chronic instability requires reconstruction of the stabilizing ligaments to avoid onset of arthritis. Prosthetic replacement in arthritis is gaining acceptance in the management of arthritis.

  2. Nonsingular bouncing cosmologies in light of BICEP2

    Energy Technology Data Exchange (ETDEWEB)

    Cai, Yi-Fu; Quintin, Jerome [Department of Physics, McGill University, 3600 rue University, Montréal, QC, H3A 2T8 Canada (Canada); Saridakis, Emmanuel N. [Physics Division, National Technical University of Athens, 15780 Zografou Campus, Athens (Greece); Wilson-Ewing, Edward, E-mail: yifucai@physics.mcgill.ca, E-mail: jquintin@physics.mcgill.ca, E-mail: Emmanuel_Saridakis@baylor.edu, E-mail: wilson-ewing@phys.lsu.edu [Department of Physics and Astronomy, Louisiana State University, Tower Drive, Baton Rouge, 70803 (United States)

    2014-07-01

    We confront various nonsingular bouncing cosmologies with the recently released BICEP2 data and investigate the observational constraints on their parameter space. In particular, within the context of the effective field approach, we analyze the constraints on the matter bounce curvaton scenario with a light scalar field, and the new matter bounce cosmology model in which the universe successively experiences a period of matter contraction and an ekpyrotic phase. Additionally, we consider three nonsingular bouncing cosmologies obtained in the framework of modified gravity theories, namely the Hořava-Lifshitz bounce model, the f(T) bounce model, and loop quantum cosmology.

  3. Tendinopathy of the long head of the biceps tendon: histopathologic analysis of the extra-articular biceps tendon and tenosynovium

    Science.gov (United States)

    Streit, Jonathan J; Shishani, Yousef; Rodgers, Mark; Gobezie, Reuben

    2015-01-01

    Background Bicipital tendinitis is a common cause of anterior shoulder pain, but there is no evidence that acute inflammation of the extra-articular long head of the biceps (LHB) tendon is the root cause of this condition. We evaluated the histologic findings of the extra-articular portion of the LHB tendon and synovial sheath in order to compare those findings to known histologic changes seen in other tendinopathies. Methods Twenty-six consecutive patients (mean age 45.4±13.7 years) underwent an open subpectoral biceps tenodesis for anterior shoulder pain localized to the bicipital groove. Excised tendons were sent for histologic analysis. Specimens were graded using a semiquantitative scoring system to evaluate tenocyte morphology, the presence of ground substance, collagen bundle characteristics, and vascular changes. Results Chronic inflammation was noted in only two of 26 specimens, and no specimen demonstrated acute inflammation. Tenocyte enlargement and proliferation, characterized by increased roundness and size of the cell and nucleus with proteoglycan matrix expansion and myxoid degenerative changes, was found in all 26 specimens. Abundant ground substance, collagen bundle changes, and increased vascularization were visualized in all samples. Conclusion Anterior shoulder pain attributed to the biceps tendon does not appear to be due to an inflammatory process in most cases. The histologic findings of the extra-articular portion of the LHB tendon and synovial sheath are similar to the pathologic findings in de Quervain tenosynovitis at the wrist, and may be due to a chronic degenerative process similar to this and other tendinopathies of the body. PMID:25792859

  4. A Six-Week Resistance Training Program Does Not Change Shear Modulus of the Triceps Brachii.

    Science.gov (United States)

    Akagi, Ryota; Shikiba, Tomofumi; Tanaka, Jun; Takahashi, Hideyuki

    2016-08-01

    We investigated the effect of a 6-week resistance training program on the shear modulus of the triceps brachii (TB). Twenty-three young men were randomly assigned to either the training (n = 13) or control group (n = 10). Before and after conducting the resistance training program, the shear modulus of the long head of the TB was measured at the point 70% along the length of the upper arm from the acromial process of the scapula to the lateral epicondyle of the humerus using shear wave ultrasound elastography. Muscle thickness of the long head of the TB was also determined at the same site by ultrasonography used during both tests. A resistance exercise was performed 3 days a week for 6 weeks using a dumbbell mass-adjusted to 80% of the 1-repetition maximum (1RM). The training effect on the muscle thickness and 1RM was significant. Nevertheless, the muscle shear modulus was not significantly changed after the training program. From the perspective of muscle mechanical properties, the present results indicate that significant adaptation must occur to make the TB more resistant to subsequent damaging bouts during the 6-week training program to target the TB.

  5. Bilateral additional slips of triceps brachii forming osseo-musculo-fibrous tunnels for ulnar nerves.

    Science.gov (United States)

    Swamy, Rs; Rao, Mkg; Somayaji, Sn; Raghu, J; Pamidi, N

    2013-07-01

    Rare additional slips of triceps brachii muscle was found bilaterally in a sixty two year old South Indian male cadaver during routine dissection of upper limb for undergraduate students at Melaka-Manipal Medical College, Manipal University, Manipal, India. On left side, the variant additional muscle slip took origin from the lower part of the medial intermuscular septum about 4 cm proximal to the medial humeral epicondyle. From its origin, the muscle fibres were passing over the ulnar nerve and were joining the triceps muscle to get inserted to the upper surface of olecranon process of ulna. On right side, the additional muscle slip was larger and bulkier and was arising from the lower part of the medial border of the humerus about 4 cm proximal to the medial epicondyle in addition to its attachment to the medial intermuscular septum. On both sides, the additional slips were supplied by twigs from the radial nerve. On both sides, the ulnar nerve was passing between variant additional slip and the lower part of the shaft of the humerus in an osseo-musculo-fibrous tunnel. Such variant additional muscle slips may affect the function of triceps muscle and can lead to snapping of medial head of triceps and ulnar nerve over medial epicondyle and also can dynamically compress the ulnar nerve during the contraction of triceps leading to ulnar neuropathy around the elbow.

  6. Subpectoral biceps tenodesis for bicipital tendonitis with SLAP tear.

    Science.gov (United States)

    Gupta, Anil K; Chalmers, Peter N; Klosterman, Emma L; Harris, Joshua D; Bach, Bernard R; Verma, Nikhil N; Cole, Brian J; Romeo, Anthony A

    2015-01-01

    The purpose of this study was to evaluate the outcomes of patients undergoing subpectoral biceps tenodesis for bicipital tendonitis with a superior labral anterior-posterior (SLAP) tear. Patients undergoing primary subpectoral biceps tenodesis for arthroscopically confirmed SLAP tears with signs or findings of bicipital tendonitis were included. An independent observer collected data prospectively as part of a data repository, which was then analyzed retrospectively. Primary outcome measures were the American Shoulder and Elbow Surgeons (ASES) score and pain relief via visual analog scale (VAS). Secondary outcome measures included the Simple Shoulder Test (SST), Constant, Single Assessment Numeric Evaluation (SANE), and Short Form 12 (SF-12) scores. Twenty-eight patients with a mean±SD age of 43.7±13.4 years and a mean±SD follow-up of 2.0±1.0 years met inclusion criteria. Workers' compensation was involved with 43% of cases, and 46% of the included patients were manual laborers. Eight (32%) patients were athletes, and 88% of the athletes were overhead athletes. Intraoperatively, 15 (54%) patients had type I SLAP tears, 10 (36%) had type II SLAP tears, 1 (3%) had a type III SLAP tear, and 2 (7%) had type IV SLAP tears. Significant improvements were seen in the following outcome measures pre- vs postoperatively: ASES score (58±23 vs 89±18; P=.001), SST score (6.3±3.6 vs 10.6±3.3; P=.001), SANE score (54±24 vs 88±25; P=.003), VAS score (3.8±2.0 vs 1.1±1.8; P=.001), SF-12 overall score (35±6 vs 42±6; P=.001), and SF-12 physical component score (39±6 vs 50±10; P=.001). Overall satisfaction was excellent in 80% of patients. Subpectoral biceps tenodesis demonstrates excellent clinical outcomes in select patients with SLAP tears. [Orthopedics. 2015; 38(1):e48-e53.].

  7. bicep2/ KECK ARRAY . IV. OPTICAL CHARACTERIZATION AND PERFORMANCE OF THE bicep2 AND KECK ARRAY EXPERIMENTS

    Energy Technology Data Exchange (ETDEWEB)

    Ade, P.A.R.; Aikin, R.W.; Barkats, D.; Benton, S.J.; Bischoff, C.A.; Bock, J.J.; Bradford, K.J.; Brevik, J.A.; Buder, I.; Bullock, E.; Dowell, C.D.; Duband, L.; Filippini, J.P.; Fliescher, S.; Golwala, S.R.; Halpern, M.; Hasselfield, M.; Hildebrandt, S.R.; Hilton, G.C.; Hui, H.; Irwin, K.D.

    2015-06-18

    bicep2/KECK ARRAY. IV. OPTICAL CHARACTERIZATION AND PERFORMANCE OF THE bicep2 AND KECK ARRAY EXPERIMENTS P. A. R. Ade1, R. W. Aikin2, D. Barkats3, S. J. Benton4, C. A. Bischoff5, J. J. Bock2,6, K. J. Bradford5, J. A. Brevik2, I. Buder5, E. Bullock7Show full author list Published 2015 June 18 • © 2015. The American Astronomical Society. All rights reserved. The Astrophysical Journal, Volume 806, Number 2 Article PDF Figures Tables References Citations 273 Total downloads Cited by 6 articles Turn on MathJax Share this article Get permission to re-use this article Article information Abstract bicep2 and the Keck Array are polarization-sensitive microwave telescopes that observe the cosmic microwave background (CMB) from the South Pole at degree angular scales in search of a signature of inflation imprinted as B-mode polarization in the CMB. bicep2 was deployed in late 2009, observed for three years until the end of 2012 at 150 GHz with 512 antenna-coupled transition edge sensor bolometers, and has reported a detection of B-mode polarization on degree angular scales. The Keck Array was first deployed in late 2010 and will observe through 2016 with five receivers at several frequencies (95, 150, and 220 GHz). bicep2 and the Keck Array share a common optical design and employ the field-proven bicep1 strategy of using small-aperture, cold, on-axis refractive optics, providing excellent control of systematics while maintaining a large field of view. This design allows for full characterization of far-field optical performance using microwave sources on the ground. Here we describe the optical design of both instruments and report a full characterization of the optical performance and beams of bicep2 and the Keck Array at 150 GHz.

  8. Initial Performance of BICEP3: A Degree Angular Scale 95 GHz Band Polarimeter

    CERN Document Server

    Wu, W L K; Ahmed, Z; Alexander, K D; Amiri, M; Barkats, D; Benton, S J; Bischoff, C A; Bock, J J; Bowens-Rubin, R; Buder, I; Bullock, E; Buza, V; Connors, J A; Filippini, J P; Fliescher, S; Grayson, J A; Halpern, M; Harrison, S A; Hilton, G C; Hristov, V V; Hui, H; Irwin, K D; Kang, J; Karkare, K S; Karpel, E; Kefeli, S; Kernasovskiy, S A; Kovac, J M; Kuo, C L; Megerian, K G; Netterfield, C B; Nguyen, H T; O'Brient, R; Ogburn, R W; Pryke, C; Reintsema, C D; Richter, S; Sorensen, C; Staniszewski, Z K; Steinbach, B; Sudiwala, R V; Teply, G P; Thompson, K L; Tolan, J E; Tucker, C E; Turner, A D; Vieregg, A G; Weber, A C; Wiebe, D V; Willmert, J; Yoon, K W

    2016-01-01

    BICEP3 is a $550~mm$ aperture telescope with cold, on-axis, refractive optics designed to observe at the $95~GHz$ band from the South Pole. It is the newest member of the BICEP/Keck family of inflationary probes specifically designed to measure the polarization of the cosmic microwave background (CMB) at degree-angular scales. BICEP3 is designed to house 1280 dual-polarization pixels, which, when fully-populated, totals to $\\sim$9$\\times$ the number of pixels in a single Keck $95~GHz$ receiver, thus further advancing the BICEP/Keck program's $95~GHz$ mapping speed. BICEP3 was deployed during the austral summer of 2014-2015 with 9 detector tiles, to be increased to its full capacity of 20 in the second season. After instrument characterization measurements were taken, CMB observation commenced in April 2015. Together with multi-frequency observation data from Planck, BICEP2, and the Keck Array, BICEP3 is projected to set upper limits on the tensor-to-scalar ratio to $r$ $\\lesssim 0.03$ at $95\\%$ C.L..

  9. Initial Performance of Bicep3: A Degree Angular Scale 95 GHz Band Polarimeter

    Science.gov (United States)

    Wu, W. L. K.; Ade, P. A. R.; Ahmed, Z.; Alexander, K. D.; Amiri, M.; Barkats, D.; Benton, S. J.; Bischoff, C. A.; Bock, J. J.; Bowens-Rubin, R.; Buder, I.; Bullock, E.; Buza, V.; Connors, J. A.; Filippini, J. P.; Fliescher, S.; Grayson, J. A.; Halpern, M.; Harrison, S. A.; Hilton, G. C.; Hristov, V. V.; Hui, H.; Irwin, K. D.; Kang, J.; Karkare, K. S.; Karpel, E.; Kefeli, S.; Kernasovskiy, S. A.; Kovac, J. M.; Kuo, C. L.; Megerian, K. G.; Netterfield, C. B.; Nguyen, H. T.; O'Brient, R.; Ogburn, R. W.; Pryke, C.; Reintsema, C. D.; Richter, S.; Sorensen, C.; Staniszewski, Z. K.; Steinbach, B.; Sudiwala, R. V.; Teply, G. P.; Thompson, K. L.; Tolan, J. E.; Tucker, C. E.; Turner, A. D.; Vieregg, A. G.; Weber, A. C.; Wiebe, D. V.; Willmert, J.; Yoon, K. W.

    2016-08-01

    Bicep3 is a 550-mm aperture telescope with cold, on-axis, refractive optics designed to observe at the 95-GHz band from the South Pole. It is the newest member of the Bicep/ Keck family of inflationary probes specifically designed to measure the polarization of the cosmic microwave background (CMB) at degree angular scales. Bicep3 is designed to house 1280 dual-polarization pixels, which, when fully populated, totals to ˜ 9× the number of pixels in a single Keck 95-GHz receiver, thus further advancing the Bicep/ Keck program's 95 GHz mapping speed. Bicep3 was deployed during the austral summer of 2014-2015 with nine detector tiles, to be increased to its full capacity of 20 in the second season. After instrument characterization, measurements were taken, and CMB observation commenced in April 2015. Together with multi-frequency observation data from Planck, Bicep2, and the Keck Array, Bicep3 is projected to set upper limits on the tensor-to-scalar ratio to r lesssim 0.03 at 95 % C.L.

  10. Low incidence of failure after proximal biceps tenodesis with unicortical suture button.

    Science.gov (United States)

    Cook, Jay B; Sedory, David M; Freidl, Michael C; Adams, Douglas R

    2017-09-01

    Recent interest in suture button fixation has developed with regard to proximal biceps tenodesis fixation. Biomechanical studies have demonstrated viability of a unicortical suture button technique in vitro. Despite this, no clinical data has been reported to validate the biomechanical data. The purpose of this study is to report on complication and failure rates in the early postoperative period after bicep tenodesis with a unicortical suture button. A retrospective review was performed of all biceps tenodesis performed at our institution over a 36-month period using a unicortical suture button for fixation. All included patients had a minimum 12 weeks follow up. Failures were defined as complete loss of fixation, change in biceps contour during the early postoperative period, acute pain at the tenodesis site, or acute loss of supination strength. 145 of 166 biceps tenodesis procedures performed by the 4 surgeons at our institution met inclusion criteria. 80.1% of the patients were active duty military at the time of surgery. The average age was 38.2 years. There were 7 total complications (4.8%), including one failure (0.7%) requiring revision. Failure and complication rates in the early postoperative period using a unicortical suture button for biceps tenodesis fixation are consistent with other reported techniques. This study adds clinical data to the existing biomechanical reports that this technique is strong enough to provide stable fixation of the biceps tendon to allow healing of the tendon to the humerus.

  11. Radiative inflation and dark energy RIDEs again after BICEP2

    Energy Technology Data Exchange (ETDEWEB)

    Bari, Pasquale Di; King, Stephen F.; Merle, Alexander [Physics and Astronomy, University of Southampton, Highfield Campus, Southampton, SO17 1BJ (United Kingdom); Luhn, Christoph [Theoretische Physik 1, Naturwissenschaftlich-Technische Fakultät, Universität Siegen, Walter-Flex-Straße 3, Siegen, D-57068 (Germany); Schmidt-May, Angnis, E-mail: P.Di-Bari@soton.ac.uk, E-mail: S.F.King@soton.ac.uk, E-mail: Christoph.Luhn@uni-siegen.de, E-mail: A.Merle@soton.ac.uk, E-mail: Angnis.Schmidt-May@fysik.su.se [Department of Physics and The Oskar Klein Centre, Stockholm University, AlbaNova University Centre, Stockholm, SE-106 91 (Sweden)

    2014-08-01

    Following the ground-breaking measurement of the tensor-to-scalar ratio r=0.20{sup +0.07}{sub -0.05} by the BICEP2 collaboration, we perform a statistical analysis of a model that combines Radiative Inflation with Dark Energy (RIDE) based on the M{sup 2}|Φ|{sup 2}ln(|Φ|{sup 2}/Λ{sup 2}) potential and compare its predictions to those based on the traditional chaotic inflation M{sup 2}|Φ|{sup 2} potential. We find a best-fit value in the RIDE model of r=0.18 as compared to r=0.17 in the chaotic model, with the spectral index being n{sub S}=0.96 in both models.

  12. Tendinopathy of the long head of the biceps.

    Science.gov (United States)

    Snyder, Garrett M; Mair, Scott D; Lattermann, Christian

    2012-01-01

    Tendinopathy of the long head of the biceps is a common cause of anterior shoulder pain. As such, the anatomy and function of the tendon as well as its pathophysiology and different treatment methods have been studied extensively. The pathophysiology is a spectrum beginning with inflammation and leading to tendon degeneration. Different clinical tests and imaging modalities may all be employed to help aid in diagnosis. Conservative management is the first-line treatment, but surgical intervention may be warranted. In general, tenotomy or tenodesis is performed depending, among other things, on the age and activity level of the patient. There are several different methods for tenodesis, each with certain advantages and disadvantages. Patient factors must be considered when choosing the optimal treatment.

  13. Killing the Straw Man: Does BICEP Prove Inflation?

    CERN Document Server

    Dent, James B; Mathur, Harsh

    2014-01-01

    The surprisingly large value of $r$, the ratio of power in tensor to scalar density perturbations in the CMB reported by the BICEP2 Collaboration provides strong evidence for Inflation at the GUT scale. In order to provide compelling evidence, other possible sources of the signal need to be ruled out. While the Inflationary signal remains the best motivated source, the current measurement unfortunately still allows for the possibility that a comparable gravitational wave background might result from a self ordering scalar field transition that takes place later at somewhat lower energy. However even marginally improved limits on the possible isocurvature contribution to CMB anistropies could rule out this possibility, and essentially all other sources of the observed signal other than Inflation.

  14. BICEP2, non-Bunch–Davies and entanglement

    Directory of Open Access Journals (Sweden)

    Namit Mahajan

    2015-04-01

    Full Text Available BICEP2 result on the tensor to scalar ratio r indicates a blue tilt in the primordial gravitational wave spectrum. This blue tilt and the observed large value r=0.2 are difficult to accommodate within the single field inflationary scenarios under standard conditions. Non-Bunch–Davies vacuum states have been proposed as a possibility. Such vacua are known to lead to pathologies. In this note we point out that it is known that these states ought to be interpreted as excited/squeezed states built over the standard Bunch–Davies vacuum in order to avoid pathological issues. We discuss the associated entanglement properties due to de Sitter horizon, and how such an approach may be more natural in the context of inflation. In particular, we suggest to employ entanglement considerations in de Sitter background to study the nature and intrinsic properties of modified initial states.

  15. Probing nuclear rates with Planck and BICEP2

    CERN Document Server

    Di Valentino, Eleonora; Lesgourgues, Julien; Mangano, Gianpiero; Melchiorri, Alessandro; Miele, Gennaro; Pisanti, Ofelia

    2014-01-01

    Big Bang Nucleosynthesis (BBN) relates key cosmological parameters to the primordial abundance of light elements. In this paper, we point out that the recent observations of Cosmic Microwave Background anisotropies by the Planck satellite and by the BICEP2 experiment constrain these parameters with such a high level of accuracy that the primordial deuterium abundance can be inferred with remarkable precision. For a given cosmological model, one can obtain independent information on nuclear processes in the energy range relevant for BBN, which determine the eventual ^2H/H yield. In particular, assuming the standard cosmological model, we show that a combined analysis of Planck data and of recent deuterium abundance measurements in metal-poor damped Lyman-alpha systems provides independent information on the cross section of the radiative capture reaction d(p,\\gamma)^3He converting deuterium into helium. Interestingly, the result is higher than the values suggested by a fit of present experimental data in the B...

  16. Distal arthrogryposis syndrome

    Directory of Open Access Journals (Sweden)

    Kulkarni K

    2008-01-01

    Full Text Available A 5-month-old male infant presented with weak cry, decreased body movements, tightness of whole body since birth, and one episode of generalized seizure on day 4 of life. He was born at term by elective caesarian section performed for breech presentation. The child had failure to thrive, contractures at elbow and knee joints, hypertonia, microcephaly, small mouth, retrognathia, and camptodactyly. There was global developmental delay. Abdominal examination revealed umbilical and bilateral inguinal hernia. Visual evoked response and brainstem evoked response audiometry were abnormal. Nerve conduction velocity was normal. Magnetic resonance imaging of brain revealed paucity of white matter in bilateral cerebral hemispheres with cerebellar and brain stem atrophy. The differential diagnoses considered in the index patient were distal arthrogryposis (DA syndrome, cerebroculofacioskeletal syndrome, and Pena Shokier syndrome. The index patient most likely represents a variant of DA: Sheldon Hall syndrome.

  17. Joint analysis of BICEP2/keck array and Planck Data.

    Science.gov (United States)

    Ade, P A R; Aghanim, N; Ahmed, Z; Aikin, R W; Alexander, K D; Arnaud, M; Aumont, J; Baccigalupi, C; Banday, A J; Barkats, D; Barreiro, R B; Bartlett, J G; Bartolo, N; Battaner, E; Benabed, K; Benoît, A; Benoit-Lévy, A; Benton, S J; Bernard, J-P; Bersanelli, M; Bielewicz, P; Bischoff, C A; Bock, J J; Bonaldi, A; Bonavera, L; Bond, J R; Borrill, J; Bouchet, F R; Boulanger, F; Brevik, J A; Bucher, M; Buder, I; Bullock, E; Burigana, C; Butler, R C; Buza, V; Calabrese, E; Cardoso, J-F; Catalano, A; Challinor, A; Chary, R-R; Chiang, H C; Christensen, P R; Colombo, L P L; Combet, C; Connors, J; Couchot, F; Coulais, A; Crill, B P; Curto, A; Cuttaia, F; Danese, L; Davies, R D; Davis, R J; de Bernardis, P; de Rosa, A; de Zotti, G; Delabrouille, J; Delouis, J-M; Désert, F-X; Dickinson, C; Diego, J M; Dole, H; Donzelli, S; Doré, O; Douspis, M; Dowell, C D; Duband, L; Ducout, A; Dunkley, J; Dupac, X; Dvorkin, C; Efstathiou, G; Elsner, F; Enßlin, T A; Eriksen, H K; Falgarone, E; Filippini, J P; Finelli, F; Fliescher, S; Forni, O; Frailis, M; Fraisse, A A; Franceschi, E; Frejsel, A; Galeotta, S; Galli, S; Ganga, K; Ghosh, T; Giard, M; Gjerløw, E; Golwala, S R; González-Nuevo, J; Górski, K M; Gratton, S; Gregorio, A; Gruppuso, A; Gudmundsson, J E; Halpern, M; Hansen, F K; Hanson, D; Harrison, D L; Hasselfield, M; Helou, G; Henrot-Versillé, S; Herranz, D; Hildebrandt, S R; Hilton, G C; Hivon, E; Hobson, M; Holmes, W A; Hovest, W; Hristov, V V; Huffenberger, K M; Hui, H; Hurier, G; Irwin, K D; Jaffe, A H; Jaffe, T R; Jewell, J; Jones, W C; Juvela, M; Karakci, A; Karkare, K S; Kaufman, J P; Keating, B G; Kefeli, S; Keihänen, E; Kernasovskiy, S A; Keskitalo, R; Kisner, T S; Kneissl, R; Knoche, J; Knox, L; Kovac, J M; Krachmalnicoff, N; Kunz, M; Kuo, C L; Kurki-Suonio, H; Lagache, G; Lähteenmäki, A; Lamarre, J-M; Lasenby, A; Lattanzi, M; Lawrence, C R; Leitch, E M; Leonardi, R; Levrier, F; Lewis, A; Liguori, M; Lilje, P B; Linden-Vørnle, M; López-Caniego, M; Lubin, P M; Lueker, M; Macías-Pérez, J F; Maffei, B; Maino, D; Mandolesi, N; Mangilli, A; Maris, M; Martin, P G; Martínez-González, E; Masi, S; Mason, P; Matarrese, S; Megerian, K G; Meinhold, P R; Melchiorri, A; Mendes, L; Mennella, A; Migliaccio, M; Mitra, S; Miville-Deschênes, M-A; Moneti, A; Montier, L; Morgante, G; Mortlock, D; Moss, A; Munshi, D; Murphy, J A; Naselsky, P; Nati, F; Natoli, P; Netterfield, C B; Nguyen, H T; Nørgaard-Nielsen, H U; Noviello, F; Novikov, D; Novikov, I; O'Brient, R; Ogburn, R W; Orlando, A; Pagano, L; Pajot, F; Paladini, R; Paoletti, D; Partridge, B; Pasian, F; Patanchon, G; Pearson, T J; Perdereau, O; Perotto, L; Pettorino, V; Piacentini, F; Piat, M; Pietrobon, D; Plaszczynski, S; Pointecouteau, E; Polenta, G; Ponthieu, N; Pratt, G W; Prunet, S; Pryke, C; Puget, J-L; Rachen, J P; Reach, W T; Rebolo, R; Reinecke, M; Remazeilles, M; Renault, C; Renzi, A; Richter, S; Ristorcelli, I; Rocha, G; Rossetti, M; Roudier, G; Rowan-Robinson, M; Rubiño-Martín, J A; Rusholme, B; Sandri, M; Santos, D; Savelainen, M; Savini, G; Schwarz, R; Scott, D; Seiffert, M D; Sheehy, C D; Spencer, L D; Staniszewski, Z K; Stolyarov, V; Sudiwala, R; Sunyaev, R; Sutton, D; Suur-Uski, A-S; Sygnet, J-F; Tauber, J A; Teply, G P; Terenzi, L; Thompson, K L; Toffolatti, L; Tolan, J E; Tomasi, M; Tristram, M; Tucci, M; Turner, A D; Valenziano, L; Valiviita, J; Van Tent, B; Vibert, L; Vielva, P; Vieregg, A G; Villa, F; Wade, L A; Wandelt, B D; Watson, R; Weber, A C; Wehus, I K; White, M; White, S D M; Willmert, J; Wong, C L; Yoon, K W; Yvon, D; Zacchei, A; Zonca, A

    2015-03-13

    We report the results of a joint analysis of data from BICEP2/Keck Array and Planck. BICEP2 and Keck Array have observed the same approximately 400  deg^{2} patch of sky centered on RA 0 h, Dec. -57.5°. The combined maps reach a depth of 57 nK deg in Stokes Q and U in a band centered at 150 GHz. Planck has observed the full sky in polarization at seven frequencies from 30 to 353 GHz, but much less deeply in any given region (1.2  μK deg in Q and U at 143 GHz). We detect 150×353 cross-correlation in B modes at high significance. We fit the single- and cross-frequency power spectra at frequencies ≥150  GHz to a lensed-ΛCDM model that includes dust and a possible contribution from inflationary gravitational waves (as parametrized by the tensor-to-scalar ratio r), using a prior on the frequency spectral behavior of polarized dust emission from previous Planck analysis of other regions of the sky. We find strong evidence for dust and no statistically significant evidence for tensor modes. We probe various model variations and extensions, including adding a synchrotron component in combination with lower frequency data, and find that these make little difference to the r constraint. Finally, we present an alternative analysis which is similar to a map-based cleaning of the dust contribution, and show that this gives similar constraints. The final result is expressed as a likelihood curve for r, and yields an upper limit r_{0.05}<0.12 at 95% confidence. Marginalizing over dust and r, lensing B modes are detected at 7.0σ significance.

  18. Distal corporoplasty for distal cylinders extrusion after penile prosthesis implantation.

    Science.gov (United States)

    Carrino, Maurizio; Chiancone, Francesco; Battaglia, Gaetano; Pucci, Luigi; Fedelini, Paolo

    2017-02-03

    Distal extrusion of cylinders is a potential complication of the penile prosthesis implantation. Several methods have been proposed for repairing a distal penile erosion. We present our preliminary experience in "Distal corporoplasty" technique. We enrolled 18 consecutive patients whose underwent a distal corporoplasty with simultaneous reimplantation of an "AMS 700 inflatable penile prosthesis (LGX)" from January 2013 to November 2015 at our hospital. All procedures were performed by a single surgical team. Intraoperative and postoperative complications have been classified and reported according to Satava6 and Clavien-Dindo (CD) system.7 Mean values with standard deviations (±SD) were computed and reported for all items. Mean age of the patients was 53.61 (±11.90) years. Mean body max index (BMI) was 24.22 (±2.51). Mean operative time was 85.2 (±13.1) minutes. Blood losses were minimal. No intraoperative complications are reported according to Satava classification. Four out of 18 patients (22.22%) experienced postoperative complications according to CD system. All patients had sexual intercourse for the first time postsurgery after a mean of 59.11 ± 2.08 days. Mean follow-up was 22.11 (±9.95). Distal extrusion of cylinders is a potential complication of the penile prosthesis implantation. Distal corporoplasty was first described by Mulcahy. He reported a series of 14 patients with a follow-up of about 2 years with optimal functional outcomes. Moreover, distal corporoplasty resulted in shorter operative time, better function, less pain, and fewer recurrences than Gortex windsock repair.10 In our experience, distal corporoplasty is a simple and safe procedure in the treatment of distal cylinders extrusion when the prosthetic material is not exposed to the exterior.

  19. Morphometric analyses of normal pediatric brachial biceps and quadriceps muscle tissue

    National Research Council Canada - National Science Library

    Sallum, Adriana M E; Varsani, Hemlata; Holton, Janice L; Marie, Suely K N; Wedderburn, Lucy R

    2013-01-01

    Pediatric normal brachial biceps (14 specimens) and quadriceps muscles (14 specimens) were studied by immunohistochemistry to quantify fiber-type, diameter and distribution, capillary density, presence of inflammatory cells...

  20. Biceps Femoris Aponeurosis Size: A Potential Risk Factor for Strain Injury?

    National Research Council Canada - National Science Library

    EVANGELIDIS, PAVLOS E; MASSEY, GARRY J; PAIN, MATTHEW T G; FOLLAND, JONATHAN P

    2015-01-01

    PURPOSEA disproportionately small biceps femoris long head (BFlh) proximal aponeurosis has been suggested as a risk factor for hamstring strain injury by concentrating mechanical strain on the surrounding muscle tissue...

  1. High-intensity high-volume swimming induces more robust signaling through PGC-1α and AMPK activation than sprint interval swimming in m. triceps brachii

    DEFF Research Database (Denmark)

    Casuso, Rafael A; Plaza-Díaz, Julio; Ruiz-Ojeda, Francisco J

    2017-01-01

    We aimed to test whether high-intensity high-volume training (HIHVT) swimming would induce more robust signaling than sprint interval training (SIT) swimming within the m. triceps brachii due to lower metabolic and oxidation. Nine well-trained swimmers performed the two training procedures...... on separate randomized days. Muscle biopsies from m. triceps brachii and blood samples were collected at three different time points: a) before the intervention (pre), b) immediately after the swimming procedures (post) and c) after 3 h of rest (3 h). Hydroperoxides, creatine kinase (CK), and lactate...

  2. Modified arthroscopic transfer of the long head of the biceps tendon to the conjoint tendon

    Institute of Scientific and Technical Information of China (English)

    MA Yong; CUI Guo-qing; AO Ying-fang; XIAO Jian; YAN Hui; YANG Yu-ping; XIE Xing

    2009-01-01

    @@ The long head of the biceps tendon (LHBT) pathology has been implicated as a common source of shoulder pain. The patients may be more resistant to conservative treatment than those with isolated subacromial impingement.1 Even though, the surgical options of this disease remain controversial. It has been reported that tenotomy and tenodesis of the biceps tendon were usually utilized. However, persistent pain, deformity, and muscle cramping were frequently observed.1-5

  3. Biomechanical characterization of unicortical button fixation: a novel technique for proximal subpectoral biceps tenodesis.

    Science.gov (United States)

    DeAngelis, Joseph P; Chen, Alvin; Wexler, Michael; Hertz, Benjamin; Grimaldi Bournissaint, Leandro; Nazarian, Ara; Ramappa, Arun J

    2015-05-01

    Proximal biceps tenodesis is one method for treating biceps-related pain. Tenodesis protects the length-tension relationship of the biceps muscle, maintains strength, and provides a better cosmetic appearance than tenotomy. The purpose of this investigation was to compare the mechanical properties of a unicortical metal button and an interference screw in proximal biceps tenodesis. Six pairs of fresh-frozen shoulders were dissected, leaving the proximal biceps tendon as a free graft. On each pair of shoulders, a biceps tenodesis was performed using an interference screw or a unicortical metal button. The specimens were mounted and a cyclic load (10-60 N) was applied at 1 Hz for 200 cycles, followed by an axial load to failure. The displacement, ultimate load to failure, and mode of failure were recorded. Displacement in response to cyclic loading was 3.7 ± 2.2 mm for the interference screw and 1.9 ± 1.0 mm for the cortical button (P = 0.03). Load at failure for the interference screw was 191 ± 64 N (stiffness: 24 ± 11 N/mm) and 183 ± 61 N (stiffness: 24 ± 7. N/mm) for the unicortical button (P = n.s. for both cases). As a novel technique for subpectoral biceps tenodesis, a unicortical button demonstrated significantly less displacement in response to cyclic loading than the interference screw. The ultimate load to failure and stiffness for the two methods were not different. In this way, a unicortical button may provide a reliable alternative method of fixation with a potentially lower risk of post-operative humeral fracture and a construct that permits early mobilization following biceps tenodesis.

  4. Spontaneous resorption of calcification at the long head of the biceps tendon

    OpenAIRE

    Amri, Adriansyah; Yukata, Kiminori; Nakai, Sho; Hara, Michiharu; Yamanaka, Issei; Hamawaki, Jun-ichi

    2015-01-01

    Calcific tendinitis of the long head of the biceps tendon is a rare cause of shoulder pain. Calcium deposits are often spontaneously resorbed or reduced in size in the rotator cuff tendons, which represent the most common sites of calcific tendinitis around the shoulder. To our knowledge, no case of spontaneous resorption of calcification in the long head of the biceps tendon has been reported in the literature. Here, we report one such case and describe its successful treatment using a conse...

  5. Evaluation of the Effusion within Biceps Long Head Tendon Sheath Using Ultrasonography

    OpenAIRE

    Park, In; Lee, Hyo-Jin; Kim, Sung-Eun; Bae, Sung-Ho; Lee, Kwang-Yeol; Park, Kwang-Sun; Kim, Yang-Soo

    2015-01-01

    Background Many shoulder diseases are related to glenohumeral joint synovitis and effusion. The purpose of the present study is to detect effusion within the biceps long head tendon sheath as the sign of glenohumeral joint synovitis using ultrasonography, and to evaluate the clinical meaning of effusion within the biceps long head tendon sheath. Methods A consecutive series of 569 patients who underwent ultrasonography for shoulder pain were reviewed retrospectively and ultimately, 303 patien...

  6. Biceps tendinitis as a cause of acute painful knee after total knee arthroplasty.

    Science.gov (United States)

    Pandher, Dilbans Singh; Boparai, Randhir Singh; Kapila, Rajesh

    2009-12-01

    The case report highlights an unusual case of posterolateral knee pain after total knee arthroplasty. Tendinitis of the patellar tendon or pes anserinus is a common complication after total knee arthroplasty; however, there is no report in the literature regarding the biceps femoris tendinitis causing acute pain in the early postoperative period. In this case, the biceps tendinitis was diagnosed and treated by ultrasound-guided injection into the tendon sheath.

  7. Biceps Tenotomy Versus Tenodesis in Active Patients Younger Than 55 Years

    Science.gov (United States)

    Friedman, Jamie L.; FitzPatrick, Jennifer L.; Rylander, Lucas S.; Bennett, Christine; Vidal, Armando F.; McCarty, Eric C.

    2015-01-01

    Background: Proximal biceps pathology is a significant factor in shoulder pain. Surgical treatment options include biceps tenotomy and subpectoral biceps tenodesis. Tenotomy is a simple procedure, but it may produce visible deformity, subjective cramping, or loss of supination strength. Tenodesis is a comparatively technical procedure involving a longer recovery, but it has been hypothesized to achieve better outcomes in younger active patients (Popeye” deformity, compared with 18.2% (4/22) of tenodesis patients. Strength prior to fatiguing exercise was similar between tenodesis and tenotomy for FS (6.9 vs 7.3 lbs; P < .05), EF in neutral (35.4 vs 35.4 lbs), and EF in supination (33.8 vs 34.2 lbs). Strength was not significantly different between groups for isometric strength and endurance measures. Subjective functional outcome measured by the DASH, ASES, and VAS scores were similar between groups. Frequency of complaints of cramping was higher in the tenotomy group (4/20 vs 1/22), and complaints of pain were higher in the tenodesis group (11/22 vs 5/20). Conclusion: Despite increased demands and activity placed on biceps function in a younger population, this study showed no differences in functional and subjective outcome measurements. The choice between biceps tenotomy and tenodesis for pathology of the proximal biceps tendon can continue to be based on surgeon and patient preference. PMID:26535382

  8. Inflation in the light of BICEP2 and PLANCK

    Indian Academy of Sciences (India)

    Subhendra Mohanty

    2016-02-01

    The BICEP2/Keck+PLANCK joint analysis of the -model polarization and polarization by foreground dust sets an upper bound on the tensor-to-scalar ratio of 0.05 < 0.12 at 95% CL. The popular Starorbinsky model Higgs-inflation or the conformally equivalent Higgs-inflation model allow low values (∼10−3). We survey the generalizations of the Starobinsky–Higgs models which would allow larger values ( ∼ 0.1). The Starobinsky–Higgs inflation models require an exponential potential which can be naturally derived from SUGRA models. We show that a variation of the no-scale SUGRA model can give rise to the generalized Starobinsky models which give large . We also examine non-standard boundary conditions which would allow a large deviation of the tensor spectral index from the slow roll values and propose that the presence of a thermal component in the tensor spectrum arises from Gibbons–Hawking temperature of the de-Sitter space.

  9. Axion cold dark matter in view of BICEP2 results.

    Science.gov (United States)

    Gondolo, Paolo; Visinelli, Luca

    2014-07-04

    The properties of axions that constitute 100% of cold dark matter (CDM) depend on the tensor-to-scalar ratio r at the end of inflation. If r=0.20(-0.05)(+0.07) as reported by the BICEP2 Collaboration, then "half" of the CDM axion parameter space is ruled out. Namely, in the context of single-field slow-roll inflation, for axions to be 100% of the CDM, the Peccei-Quinn symmetry must be broken after the end of inflation, so that axion nonadiabatic primordial fluctuations are compatible with observational constraints. The cosmic axion density is then independent of the tensor-to-scalar ratio r, and the axion mass is expected to be in a narrow range that, however, depends on the cosmological model before primordial nucleosynthesis. In the standard Lambda CDM cosmology, the CDM axion mass range is ma=(71±2  μeV)(αdec+1)6/7, where αdec is the fractional contribution to the cosmic axion density from decays of axionic strings and walls.

  10. Reconstructing the local potential of inflation with BICEP2 data

    Energy Technology Data Exchange (ETDEWEB)

    Ma, Yin-Zhe [Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC, V6T 1Z1 Canada (Canada); Wang, Yi, E-mail: mayinzhe@phas.ubc.ca, E-mail: yw366@cam.ac.uk [Centre for Theoretical Cosmology, DAMTP, University of Cambridge, Wilberforce Rd, Cambridge, CB3 0WA U.K. (United Kingdom)

    2014-09-01

    We locally reconstruct the inflationary potential by using the current constraints on r and n{sub s} from BICEP2 data. Assuming small and negligible α{sub s}, the inflationary potential is approximately linear in Δφ∼ M{sub pl} range but becomes non-linear in Δφ∼ 10 M{sub pl} range. However if we vary the value of α{sub s} within the range given by constraints from Planck measurement, the local reconstruction is only valid in the range of Δφ∼ 0.4 M{sub pl}, which challenges the inflationary background from the point of view of effective field theory. We show that, within the range of Δ φ ∼ 0.4 M{sub pl}, the inflation potential can be precisely reconstructed. With the current reconstruction, we show that V(φ) ∼ φ{sup 2} and φ{sup 3} are consistent, while φ model is ruled out by 95% confidence level of the reconstructed range of potential. This sets up a strong limit of large-field inflation models.

  11. Axion cold dark matter in view of BICEP2 results

    CERN Document Server

    Visinelli, L

    2014-01-01

    The properties of axions that constitute 100% of cold dark matter (CDM) depend on the tensor-to-scalar ratio $r$ at the end of inflation. If $r=0.20^{+0.07}_{-0.05}$ as reported by the BICEP2 collaboration, then ``half'' of the CDM axion parameter space is ruled out. Namely, the Peccei-Quinn symmetry must be broken after the end of inflation, and axions do not generate non-adiabatic primordial fluctuations. The cosmic axion density is then independent of the tensor-to-scalar ratio $r$, and the axion mass is expected to be in a narrow range that however depends on the cosmological model before primordial nucleosynthesis. In the standard $\\Lambda$CDM cosmology, the CDM axion mass range is $m_a = \\left(71 \\pm 2\\right) \\mu{\\rm eV} \\, (\\alpha^{\\rm dec}+1)^{6/7}$, where $\\alpha^{\\rm dec}$ is the fractional contributions to the cosmic axion density from decays of axionic strings and walls.

  12. Biceps instability and Slap type II tear in overhead athletes.

    Science.gov (United States)

    Osti, Leonardo; Soldati, Francesco; Cheli, Andrea; Pari, Carlotta; Massari, Leo; Maffulli, Nicola

    2012-10-01

    Type II lesions are common lesions encountered in overhead athletes with controversies arising in term of timing for treatment, surgical approach, rehabilitation and functional results. The aim of our study was to evaluate the outcomes of arthroscopic repair of type II SLAP tears in overhead athletes, focusing on the time elapsed from diagnosis and treatment, time needed to return to sport, rate of return to sport and to previous level of performance, providing an overview concerning evidence for the effectiveness of different surgical approaches to type II SLAP tears in overhead athletes. A internet search on peer reviewed Journal from 1990, first descriprion of this pathology, to 2012, have been conducted evaluating the outcomes for both isolated Slap II tear overhead athletes and those who presented associated lesions treated. The results have been analyzed according to the scale reported focusing on return to sport and level of activity. Apart from a single study, non prospective level I and II studies were detected. Return to play at the same level ranged form 22% to 94% with different range of technique utilized with the majority of the authors recommending the fixation of these lesions but biceps tenodesis can lead to higher satisfaction racte when directly compated to the anchor fixation. Associated pathologies such as partial or full tickness rotator cuff tear did not clearly affect the outcomes and complications rate. There is no consensus regarding timing and treatment for type II SLAP, especially in overhead athletes who need to regain a high level of performance.

  13. Distal DVT: worth diagnosing? Yes.

    Science.gov (United States)

    Schellong, S M

    2007-07-01

    Much of the argument for or against diagnosis of distal deep vain thrombosis (DVT) depends on the extra effort that has to be spent on it. This review presents the data on ultrasound of paired calf veins and calf muscle veins (distal ultrasound) in terms of protocols, feasibility, reliability and expected findings. In summary, provided there is adequate and anatomically sound training of sonographers, distal ultrasound is a valid, 4-minute procedure, which can easily be added to the examination of proximal veins. The second part of the review refers to the pathophysiology of ascending DVT, which is the most common type. Adequate patient care in terms of benefit, harm and cost includes a single non-invasive examination followed by risk adopted treatment allocation. This concept ideally should be valid for any type of DVT. The data extending this concept to distal DVT can only be derived from studies that look closely at this entity (i.e. in fact diagnose distal DVT). Even before these data are available, diagnosing distal DVT at least doubles the number of symptomatic patients in which signs and symptoms can be ascribed to a definitive diagnosis, which in itself is a benefit for patient care.

  14. Intratendinous ganglion of the long head of the biceps tendon: US and MRI features (2010: 9b)

    Energy Technology Data Exchange (ETDEWEB)

    Rutten, Matthieu J.C.M.; Jong, Mathijn D.F. de; Jager, Gerrit J. [Jeroen Bosch Hospital, Department of Radiology, ' s-Hertogenbosch (Netherlands); Loon, Ton van [Jeroen Bosch Hospital, Department of Orthopedic Surgery, ' s-Hertogenbosch (Netherlands)

    2010-12-15

    We present a case report and literature review of the ultrasound (US) and magnetic resonance imaging (MRI) features of an intratendinous ganglion originating from the long head of the biceps tendon. Intratendinous ganglia are very rare entities and intratendinous ganglion of the long head of the biceps tendon has only been described once. To the best of our knowledge, this is the first case report presenting the sonographic features of an intratendinous ganglion originating from the long head of the biceps tendon. (orig.)

  15. A influência da mobilização articular nas tendinopatias dos músculos bíceps braquial e supra-espinal The influence of joint mobilization on tendinopathy of the biceps brachii and supraspinatus muscles

    OpenAIRE

    RI Barbosa; GOES, R; Mazzer,N; MCR Fonseca

    2008-01-01

    As causas mais comuns de dor no ombro estão relacionadas às degenerações dos tendões da musculatura do manguito rotador. OBJETIVO: Verificar a influência da mobilização articular por meio dos movimentos acessórios do ombro na recuperação inicial de 14 pacientes com tendinopatia crônica dos mm. supra-espinal e/ou bíceps braquial. MÉTODOS: Foram comparados dois protocolos de tratamento, compostos da aplicação de ultra-som terapêutico na área do tendão afetado e de treinamento excêntrico na musc...

  16. sEMG Signal Changes During Isometric Contraction of the Biceps Brachii to Fatigue%等长负荷诱发肱二头肌疲劳过程中sEMG信号变化

    Institute of Scientific and Technical Information of China (English)

    扬丹

    2000-01-01

    本研究比较了等长负荷诱发肱二头肌疲劳过程中sEMG信号时域和频域指标变化的特异性、有效性和可靠性.研究发现:(1) 频域指标在肌肉疲劳过程中均呈明显的直线递减型变化,而时域指标的变化则有较大的变异;(2) 频域指标时间序列曲线的斜率不受受试者皮下脂肪厚度和肢体围度的影响,而时域指标则易受影响;(3) 频域指标时间序列曲线的斜率与负荷持续时间明显相关,而时域指标的相关不明显.研究结果表明sEMG频域指标反映肌肉疲劳的效果优于时域指标.

  17. BICEP2 / Keck Array VII: Matrix based E/B Separation applied to BICEP2 and the Keck Array

    CERN Document Server

    Array, Keck; Ade, P; Ahmed, Z; Aikin, R W; Alexander, K D; Barkats, D; Benton, S J; Bischoff, C A; Bock, J J; Bowens-Rubin, R; Brevik, J A; Buder, I; Bullock, E; Buza, V; Connors, J; Crill, B P; Duband, L; Dvorkin, C; Filippini, J P; Fliescher, S; Grayson, J; Halpern, M; Harrison, S; Hildebrandt, S R; Hilton, G C; Hui, H; Irwin, K D; Kang, J; Karkare, K S; Karpel, E; Kaufman, J P; Keating, B G; Kefeli, S; Kernasovskiy, S A; Kovac, J; Kuo, C L; Leitch, E M; Lueker, M; Megerian, K G; Namikawa, T; Netterfield, C B; Nguyen, H T; O'Brient, R; W., R; Orlando, A; Pryke, C; Richter, S; Schwarz, R; Sheehy, C D; Staniszewski, Z K; Steinbach, B; Sudiwala, R V; Teply, G P; Thompson, K L; Tolan, J E; Tucker, C; Turner, A D; Vieregg, A G; Weber, A C; Wiebe, D V; Willmert, J; Wong, C L; Wu, W L; Yoon, K W

    2016-01-01

    A linear polarization field on the sphere can be uniquely decomposed into an E-mode and a B-mode component. These two components are analytically defined in terms of spin-2 spherical harmonics. Maps that contain filtered modes on a partial sky can also be decomposed into E-mode and B-mode components. However, the lack of full sky information prevents orthogonally separating these components using spherical harmonics. In this paper, we present a technique for decomposing an incomplete map into E and B-mode components using E and B eigenmodes of the pixel covariance in the observed map. This method is found to orthogonally define E and B in the presence of both partial sky coverage and spatial filtering. This method has been applied to the BICEP2 and the Keck Array maps and results in reducing E to B leakage from LCDM E-modes to a level corresponding to a tensor-to-scalar ratio of $r<1\\times10^{-4}$.

  18. Reverse Distal Transverse Palmar Arch in Distal Digital Replantation.

    Science.gov (United States)

    Wei, Ching-Yueh; Orozco, Oscar; Vinagre, Gustavo; Shafarenko, Mark

    2017-07-22

    Refinements in microsurgery have made distal finger replantation an established technique with high success rates and good functional and aesthetic outcomes. However, it still represents a technically demanding procedure due to the small vessel caliber and frequent lack of vessel length, requiring the use of interpositional venous grafts in some instances. We describe a new technique for anastomosis in fingertip replantation, whereby the need for venous grafts is eliminated. Applying the reverse distal transverse palmar arch technique, 11 cases of distal digital replantation were performed between January 2011 and July 2016. The described procedure was used for arterial anastomosis in 10 cases and arteriovenous shunting for venous drainage in 1 case. A retrospective case review was conducted. The technical description and clinical outcome evaluations are presented. Ten of the 11 replanted digits survived, corresponding to an overall success rate of 91%. One replant failed due to venous insufficiency. Blood transfusions were not required for any of the patients. Follow-up (range, 1.5-5 months) revealed near-normal range of motion and good aesthetic results. All of the replanted digits developed protective sensation. The average length of hospital admission was 5 days. All patients were satisfied with the results and were able to return to their previous work. The use of the reverse distal transverse palmar arch is a novel and reliable technique in distal digital replantation when an increase in vessel length is required, allowing for a tension-free arterial repair without the need for vein grafts.

  19. Foam Rolling of Quadriceps Decreases Biceps Femoris Activation.

    Science.gov (United States)

    Cavanaugh, Mark Tyler; Aboodarda, Saied Jalal; Hodgson, Daniel; Behm, David George

    2016-09-06

    Foam rolling has been shown to increase range of motion without subsequent performance impairments of the rolled muscle, however, there are no studies examining rolling effects on antagonist muscles. The objective of this study was to determine whether foam rolling the hamstrings and/or quadriceps would affect hamstrings and quadriceps activation in men and women. Recreationally active men (n=10, 25 ± 4.6 years, 180.1 ± 4.4 cm, 86.5 ± 15.7 kg) and women (n=8, 21.75 ± 3.2 years, 166.4 ± 8.8 cm, 58.9 ± 7.9 kg) had surface electromyographic activity analyzed in the dominant vastus lateralis (VL), vastus medialis (VM), and biceps femoris (BF) muscles upon a single leg landing from a hurdle jump under four conditions. Conditions included rolling of the hamstrings, quadriceps, both muscle groups and a control session. BF activation significantly decreased following quadriceps foam rolling (F(1,16) = 7.45, p = 0.015, -8.9%). There were no significant changes in quadriceps activation following hamstrings foam rolling. This might be attributed to the significantly greater levels of perceived pain with quadriceps rolling applications (F(1,18) = 39.067, p foam rolling for VL (F(6,30) = 1.31, p = 0.283) VM (F(6,30) = 1.203, p = 0.332) or BF (F(6,36) = 1.703, p = 0.199). Antagonist muscle activation may be altered following agonist foam rolling, however, it can be suggested that any changes in activation are likely a result of reciprocal inhibition due to increased agonist pain perception.

  20. BICEP3: a 95 GHz refracting telescope for degree-scale CMB polarization

    CERN Document Server

    Ahmed, Z; Benton, S J; Bock, J J; Bowens-Rubin, R; Buder, I; Bullock, E; Connors, J; Filippini, J P; Grayson, J A; Halpern, M; Hilton, G C; Hristov, V V; Hui, H; Irwin, K D; Kang, J; Karkare, K S; Karpel, E; Kovac, J M; Kuo, C L; Netterfield, C B; Nguyen, H T; O'Brient, R; Ogburn, R W; Pryke, C; Reintsema, C D; Richter, S; Thompson, K L; Turner, A D; Vieregg, A G; Wu, W L K; Yoon, K W

    2014-01-01

    BICEP3 is a 550 mm-aperture refracting telescope for polarimetry of radiation in the cosmic microwave background at 95 GHz. It adopts the methodology of BICEP1, BICEP2 and the Keck Array experiments - it possesses sufficient resolution to search for signatures of the inflation-induced cosmic gravitational-wave background while utilizing a compact design for ease of construction and to facilitate the characterization and mitigation of systematics. However, BICEP3 represents a significant breakthrough in per-receiver sensitivity, with a focal plane area 5$\\times$ larger than a BICEP2/Keck Array receiver and faster optics ($f/1.6$ vs. $f/2.4$). Large-aperture infrared-reflective metal-mesh filters and infrared-absorptive cold alumina filters and lenses were developed and implemented for its optics. The camera consists of 1280 dual-polarization pixels; each is a pair of orthogonal antenna arrays coupled to transition-edge sensor bolometers and read out by multiplexed SQUIDs. Upon deployment at the South Pole duri...

  1. [Distal humerus fractures in children].

    Science.gov (United States)

    Schneidmueller, D; Boettger, M; Laurer, H; Gutsfeld, P; Bühren, V

    2013-11-01

    Fractures of the distal humerus belong to the most common injuries of the upper arm in childhood. Most frequently occurring is the supracondylar fracture of the distal humerus. In these cases and in the second most common epicondylar fractures, the metaphysis is affected and these fractures are therefore extra-articular. They have to be distinguished from articular fractures regarding therapy and prognosis. The growth potential of the distal epiphysis is very limited as is the possibility of spontaneous correction so that major dislocations should not be left uncorrected. Unstable and especially dislocated articular fractures must be anatomically reconstructed employing various osteosynthetic techniques, mostly combined with immobilization. Insufficient reconstruction, growth disturbance and non-union can result in axial deformities, such as cubitus valgus and varus, restriction of motion, pain and nerve palsy.

  2. Traumatic Distal Ulnar Artery Thrombosis

    Directory of Open Access Journals (Sweden)

    Ahmet A. Karaarslan

    2014-01-01

    Full Text Available This paper is about a posttraumatic distal ulnar artery thrombosis case that has occurred after a single blunt trauma. The ulnar artery thrombosis because of chronic trauma is a frequent condition (hypothenar hammer syndrome but an ulnar artery thrombosis because of a single direct blunt trauma is rare. Our patient who has been affected by a single blunt trauma to his hand and developed ulnar artery thrombosis has been treated by resection of the thrombosed ulnar artery segment. This report shows that a single blunt trauma can cause distal ulnar artery thrombosis in the hand and it can be treated merely by thrombosed segment resection in suitable cases.

  3. Tendinopathy of the tendon of the long head of the biceps.

    Science.gov (United States)

    Longo, Umile Giuseppe; Loppini, Mattia; Marineo, Gianluca; Khan, Wasim S; Maffulli, Nicola; Denaro, Vincenzo

    2011-12-01

    Pathologies of tendon of the long head of the biceps (LHB) are an important cause of shoulder pain. They include tendinopathy, rupture, superior labrum anterior and posterior lesions, pulley tears, and tendon instability. Conservative management of symptomatic LHB tendinopathy is commonly accepted as the first-line treatment. It consists of rest, nonsteroidal anti-inflammatory drugs, corticosteroid injections, and physical therapy. Biceps tenotomy and tenodesis are the most common surgical procedures to manage both isolated LHB pathology and biceps-glenoid complex tears combined with rotator cuff tears. However, controversy persists about the superiority of one of them because there is no evidence of significant differences in functional scores or patient satisfaction between the 2 techniques. This article provides an overview on biomechanical function of the LHB and current strategies for treatment of LHB disorders.

  4. A CMB B-mode Search with Three Years of BICEP Observations

    Science.gov (United States)

    Bischoff, Colin; BICEP Collaboration

    2013-01-01

    The search for B-mode, or curl-type, polarization in the Cosmic Microwave Background is the most promising technique to constrain or detect primordial gravitational waves predicted by the theory of inflation. The Bicep telescope, which observed from the South Pole for three years from 2006 through 2008, is the first experiment specifically designed to target this signal. We review the observational motivations for inflation, the advantages of B-mode observations as a technique for detecting the gravitational wave background, and the design features of Bicep that optimize it for this search. The final analysis of all three seasons of Bicep data is in progress, representing a 50% increase in integration time compared to the result from Chiang et al. (2010). A preview of the three year result includes E-mode and B-mode maps, as well as the projected constraint on r, the tensor-to-scalar ratio.

  5. A comparison of physical examinations with musculoskeletal ultrasound in the diagnosis of biceps long head tendinitis.

    Science.gov (United States)

    Chen, Hung-Sheng; Lin, Shu-Hsien; Hsu, Yen-Hsia; Chen, Shih-Ching; Kang, Jiunn-Horng

    2011-09-01

    Provocative tests are useful in diagnosing biceps tendon tendinitis. This is the first study to establish the reliability of these tests by comparing the resuts with musculoskeletal ultrasound (US) findings. This study examined 125 patients (69 women and 56 men) and 143 shoulders with shoulder pain. Yergason's test, Speed's test and a bicipital groove tenderness test were performed and musculoskeletal US findings were used as standard reference. Biceps tendon tendinitis was diagnosed with US in 39.1% of the patients and, of those, 55.3% had coexisting rotator cuff injury. The sensitivity and specificity of Yergason's test were 32% and 78%, respectively. The sensitivity and specificity of Speed's test were 63% and 58%, respectively. In conclusion, all three tests are limited by poor sensitivity. US can be an image modality choice in diagnosing biceps pathology.

  6. Arthroscopic biceps tenodesis compared with repair of isolated type II SLAP lesions in patients older than 35 years.

    Science.gov (United States)

    Denard, Patrick J; Lädermann, Alexandre; Parsley, B K; Burkhart, Stephen S

    2014-03-01

    This study compared arthroscopic biceps tenodesis with biceps repair for isolated type II superior labrum anterior and posterior (SLAP) lesions in patients older than 35 years. The authors identified isolated type II SLAP lesions that were surgically managed over a 5-year period. Minimum 2-year follow-up data were available for 22 patients who underwent biceps repair (repair group) and for 15 patients who underwent a primary biceps tenodesis (tenodesis group). Mean age at surgery was 45.2±5.5 years in the repair group and 52.0±8.0 years in the tenodesis group. In the repair group, functional outcome improved from baseline to final follow-up using the American Shoulder and Elbow Surgeons (ASES) (47.5 to 87.4, respectively; PSLAP lesion had a shorter postoperative recovery, a more predictable functional outcome, and a higher rate of satisfaction and return to activity with a biceps tenodesis compared with a biceps repair. Based on these observations, biceps tenodesis is preferable to biceps repair for isolated type II SLAP lesions in nonoverhead athletes older than 35 years.

  7. “ROCAMBOLE-LIKE” BICEPS TENODESIS: TECHNIQUE AND RESULTS

    Science.gov (United States)

    Godinho, Glaydson Gomes; Mesquita, Fabrício Augusto Silva; França, Flávio de Oliveira; Freitas, José Márcio Alves

    2015-01-01

    Objective: To present a new technique for bicipital tenodesis and its results: accomplished partially via arthroscopy and grounded in concepts of the normal and pathological anatomy of the tendon of the biceps long head. It is based on the predisposition of this tendon towards becoming attached to the intertubercular sulcus after rupture or tenotomy (auto-tenodesis). Methods: Evaluations were conducted on 63 patients (63 shoulders), aged from 32 to 77 years (average 55), consisting of 32 females (51%) and 31 males (49%). Thirty-five of the patients (55.6%) were over 60 years of age and 28 patients (44.4%) were under 60 years of age. Eighteen were sports participants (28.6%). Fourteen had injuries associated with the subscapularis (22.2%). The average follow up was 43 months (ranging from 12 to 74 months). The right shoulder accounted for 48 cases (76.2%), of which one was a left-handed individual and 47 were right-handed. The left shoulder accounted for 15 (23%) of the patients, of whom two were left-handed and 13 were right-handed. There were no bilateral occurrences. The statistical analysis were done using SPSS version 18. Pearson's chi-square test and continuity corrections were used to investigate the statistical significance of associations between variables. Associations were taken to be statistically significant when p was less than 0.05. Results: Residual Popeye deformity was perceived by seven patients (11.1%); it was only observed by the examiner in 15 cases (23.8%); and neither the patient nor the examiner observed it in 41 cases (65%). There were no statistically valid influences from age, participation in contact or throwing sports, subscapularis tendon-associated injury or Popeye deformity. Fifty-eight patients (92.06%) were satisfied, two patients were dissatisfied (3.17%) and three patients were indifferent (4.76%). Conclusion: The technique presented high patient satisfaction rates (92.06%) and residual deformity was perceived by 11.1% of the

  8. Posterior dislocation of the long head of biceps tendon: case report and review of the literature

    Energy Technology Data Exchange (ETDEWEB)

    Mullaney, P.J.; Bleakney, R.; White, L. [Mount Sinai Hospital, Department of Medical Imaging, Toronto, ON, M5G 1X5 (Canada); Tuchscherer, P. [Toronto Western Hospital, Department of Medical Imaging, Toronto, ON (Canada); Boynton, E. [Mount Sinai Hospital, Department of Orthopaedic and Trauma Surgery, Toronto, ON (Canada)

    2007-08-15

    Posterior or lateral dislocation of the long head of biceps is a rare complication of shoulder dislocation that can result in inability to relocate the humerus. The diagnosis should be suspected when certain radiographic features are present at the initial presentation. Other imaging modalities can aid diagnosis when clinical management is unsuccessful or protracted. We present a case of surgically proven posterior dislocation of the biceps tendon with conventional radiographic, computed tomography and magnetic resonance imaging assessment. The literature on this subject is reviewed, and imaging features associated with the diagnosis are described. (orig.)

  9. Calcific tendinitis of the biceps-labral complex: a rare cause of acute shoulder pain.

    Science.gov (United States)

    Ji, Jong-Hun; Shafi, Mohamed; Kim, Weon-Yoo

    2008-06-01

    Calcific tendinitis most commonly affects the rotator cuff and has not been previously reported affecting the biceps-labral complex. We report a case of calcific tendinitis of the biceps-labral complex attachment, a rare cause of acute, severe shoulder pain. Clinically, it can be misdiagnosed as supraspinatus tendinitis or septic arthritis of the shoulder joint. Non-operative treatment failed to resolve the symptoms. Arthroscopic debridement of the calcific deposit resulted in resolution of symptoms. Knowledge of this clinical condition and its imaging features is crucial for a correct diagnosis of this uncommon cause of shoulder pain.

  10. Distal esophageal spasm: an update.

    Science.gov (United States)

    Achem, Sami R; Gerson, Lauren B

    2013-09-01

    Distal esophageal spasm (DES) is an esophageal motility disorder that presents clinically with chest pain and/or dysphagia and is defined manometrically as simultaneous contractions in the distal (smooth muscle) esophagus in ≥20% of wet swallows (and amplitude contraction of ≥30 mmHg) alternating with normal peristalsis. With the introduction of high resolution esophageal pressure topography (EPT) in 2000, the definition of DES was modified. The Chicago classification proposed that the defining criteria for DES using EPT should be the presence of at least two premature contractions (distal latencylong acting), calcium-channel blockers, anticholinergic agents, 5-phosphodiesterase inhibitors, visceral analgesics (tricyclic agents or SSRI), and esophageal dilation. Acid suppression therapy is frequently used, but clinical outcome trials to support this approach are not available. Injection of botulinum toxin in the distal esophagus may be effective, but further data regarding the development of post-injection gastroesophageal reflux need to be assessed. Heller myotomy combined with fundoplication remains an alternative for the rare refractory patient. Preliminary studies suggest that the newly developed endoscopic technique of per oral endoscopic myotomy (POEM) may also be an alternative treatment modality.

  11. Interference Screw vs. Suture Anchor Fixation for Open Subpectoral Biceps Tenodesis: Does it Matter?

    Directory of Open Access Journals (Sweden)

    Gobezie Reuben

    2008-09-01

    Full Text Available Abstract Background Bioabsorbable interference screw fixation has superior biomechanical properties compared to suture anchor fixation for biceps tenodesis. However, it is unknown whether fixation technique influences clinical results. Hypothesis We hypothesize that subpectoral interference screw fixation offers relevant clinical advantages over suture anchor fixation for biceps tenodesis. Study Design Case Series. Methods We performed a retrospective review of a consecutive series of 88 patients receiving open subpectoral biceps tenodesis with either interference screw fixation (34 patients or suture anchor fixation (54 patients. Average follow up was 13 months. Outcomes included Visual Analogue Pain Scale (0–10, ASES score, modified Constant score, pain at the tenodesis site, failure of fixation, cosmesis, deformity (popeye and complications. Results There were no failures of fixation in this study. All patients showed significant improvement between their preoperative and postoperative status with regard to pain, ASES score, and abbreviated modified Constant scores. When comparing IF screw versus anchor outcomes, there was no statistical significance difference for VAS (p = 0.4, ASES score (p = 0.2, and modified Constant score (P = 0.09. One patient (3% treated with IF screw complained of persistent bicipital groove tenderness, versus four patients (7% in the SA group (nonsignificant. Conclusion Subpectoral biceps tenodesis reliably relieves pain and improves function. There was no statistically significant difference in the outcomes studied between the two fixation techniques. Residual pain at the site of tenodesis may be an issue when suture anchors are used in the subpectoral location.

  12. Content Analysis Schedule for Bilingual Education Programs: BICEP Intercambio de la Cultura.

    Science.gov (United States)

    Shore, Marietta Saravia; Nafus, Charles

    This content analysis schedule for BICEP Intercambio de la Cultura (San Bernardino, California), presents information on the history, funding, and scope of the project. Included are sociolinguistic process variables such as the native and dominant languages of students and their interaction. Information is provided on staff selection and the…

  13. BRAIN-STEM INFLUENCES ON BICEPS REFLEX ACTIVITY AND MUSCLE TONE IN THE ANESTHETIZED RAT

    NARCIS (Netherlands)

    JUCH, PJW; SCHAAFSMA, A; VANWILLIGEN, JD

    1992-01-01

    This study analyzes the effect of electrical stimulation of the locus coeruleus (LC) and adjacent brainstem structures on the tonic reflex (TVR), the tonic stretch reflex (TSR) and on muscle tone (MT) in anaesthetized rat. Increases in TVR. TSR and MT of the m. biceps were evoked from regions

  14. Short-latency crossed responses in the human biceps femoris muscle

    DEFF Research Database (Denmark)

    Stevenson, Andrew James Thomas; Kamavuako, Ernest Nlandu; Geertsen, Svend S.

    2015-01-01

    , indicating their existence in humans. The aim of the present study was to investigate whether short-latency crossed-spinal reflexes are present in the contralateral biceps femoris (cBF) muscle following ipsilateral knee (iKnee) joint rotations during a sitting task, where participants maintained a slight pre...

  15. Proteome profiles of longissimus and biceps femoris porcine muscles related to exercise and resting

    DEFF Research Database (Denmark)

    F.W.Te Pas, Marinus; Keuning, Els; Van der Wiel, Dick J.M.

    2011-01-01

    by rest for 0, 1, or 3 h; control pigs without exercise. Proteome profiles and biochemical traits measuring energy metabolism and meat quality traits expected to be related to exercise were determined in the Longissimus and the Biceps femoris of the pigs. The results indicated associations between protein...

  16. Intra-tendinous ganglion in the long head of the biceps humeri

    Energy Technology Data Exchange (ETDEWEB)

    Kishimoto, Kenta; Akisue, Toshihiro; Fujimoto, Takuya; Kawamoto, Teruya; Hara, Hitomi; Kurosaka, Masahiro [Kobe University Graduate School of Medicine, Department of Orthopaedic Surgery, Kobe (Japan); Hitora, Toshiaki; Yamamoto, Tetuji [Kagawa University Graduate School of Medicine, Department of Orthopaedic Surgery, Kita-gun, Kagawa (Japan)

    2008-03-15

    We present details of a case of intra-tendinous ganglion arising from the long head of the biceps at an unusual location. MRI scans have important implications for surgical planning and treatment. After excision of the ganglion, the tendon remaining could be repaired. Five months after surgery, there was no sign of recurrence. (orig.)

  17. Functionality of the contralateral biceps femoris reflex response during human walking

    DEFF Research Database (Denmark)

    Stevenson, Andrew James Thomas; Geertsen, Svend S.; Sinkjær, Thomas

    2014-01-01

    In this study we examined the functionality of the contralateral biceps femoris (cBF) reflex response following ipsilateral knee extension joint rotations during the late stance phase of the gait cycle [1]. Stevenson et al. [1] proposed that the cBF reflex acts to slow the forward progression...

  18. Content Analysis Schedule for Bilingual Education Programs: BICEP Intercambio de la Cultura.

    Science.gov (United States)

    Shore, Marietta Saravia; Nafus, Charles

    This content analysis schedule for BICEP Intercambio de la Cultura (San Bernardino, California), presents information on the history, funding, and scope of the project. Included are sociolinguistic process variables such as the native and dominant languages of students and their interaction. Information is provided on staff selection and the…

  19. Clinical and Sonographic Evaluation of Bicortical Button for Proximal Biceps Tenodesis.

    Science.gov (United States)

    Meadows, James R; Diesselhorst, Matthew M; Finnoff, Jonathan T; Swanson, Britta L; Swanson, Kyle E

    2016-01-01

    Use of a cortical button for proximal biceps tenodesis has demonstrated strength comparable to that of other types of fixation in biomechanical models, but few studies have evaluated the clinical outcome of such fixation. In the study reported here, 18 patients who underwent open subpectoral biceps tenodesis with a bicortical button were assessed, at minimum 12-month follow-up, with the Disabilities of the Arm, Shoulder, and Hand (DASH) questionnaire, a pain scale, physical examination, biceps supination strength testing, and ultrasonographic evaluation (to determine tenodesis integrity and proximity of the button to the axillary nerve). No patient had symptoms of axillary nerve damage, clinical deformity, or tenodesis failure. Mean DASH score was 15.15 (scale range: 0, none to 100, extreme difficulty), and mean pain score was 12.6 (scale range: 0, none to 100, worst pain). Seventy-eight percent of patients had no bicipital groove tenderness, 89% had full elbow range of motion, and 94% had full shoulder range of motion. Mean forearm supination strength of the operated arm (125.04 lb) was significantly (P = .01) less than that of the nonoperated arm (134.39 lb). Mean (SD) distance from button to posterior circumflex humeral artery was 18.17 (9.0) mm. The study results suggest that subpectoral biceps tenodesis with a bicortical button is a safe, stable procedure that results in excellent functional outcomes.

  20. Toward an Understanding of Foreground Emission in the BICEP2 Region

    CERN Document Server

    CERN. Geneva

    2014-01-01

    BICEP2 has reported the detection of a degree-scale B-mode polarization pattern in the Cosmic Microwave Background (CMB) and has interpreted the measurement as evidence for primordial gravitational waves. Motivated by the profound importance of the discovery of gravitational waves from the early Universe, I will discuss to what extent a combination of Galactic foregrounds and lensed E-modes could be responsible for the signal. I will present independent estimates of the dust polarization signal in the BICEP2 region using several different approaches. These estimates of the dust polarization signal in the BICEP2 region are consistent with each other, but the expected amplitude of the dust polarization power spectrum is uncertain by about a factor of three. The lower end of the prediction leaves room for a primordial contribution, but at the higher end the dust in combination with the standard CMB lensing signal could account for the BICEP2 observations, without requiring the existence of primordial gravitatio...

  1. Bilateral Superior Labrum Anterior to Posterior (SLAP) Tears With Abnormal Anatomy of Biceps Tendon.

    Science.gov (United States)

    Morris, Dan; Guettler, Joseph; Morris, Sean

    2015-08-01

    There have been several descriptions of variant anatomy of the long head of the biceps tendon (LHBT). A recent literature review identified 8 cases of anomalous intracapsular attachment of the LHBT. In this report, we discuss a distinctive case of a young athlete who presented with symptoms consistent with bilateral superior labrum anterior to posterior (SLAP) tears that were unresponsive to conservative measures. Magnetic resonance imaging and arthroscopic findings of this patient confirmed that the patient had type II SLAP tears, a Buford complex anteriorly, and perhaps most important, confluence of the biceps tendon itself to the undersurface of the capsule within the rotator interval. Our case proposes that anomalous insertion of the LHBT, as well as other labral and biceps anchor variations, are not always a benign finding at the time of arthroscopy. In this particular case, the tethering of the biceps tendon to the capsule is thought to have increased stress on the superior labrum and contributed to the development of the bilateral symptomatic type II SLAP tears that were identified and treated in this young athlete.

  2. Reconstruction of scalar field theories realizing inflation consistent with the Planck and BICEP2 results

    Energy Technology Data Exchange (ETDEWEB)

    Bamba, Kazuharu [Leading Graduate School Promotion Center, Ochanomizu University, 2-1-1 Ohtsuka, Bunkyo-ku, Tokyo 112-8610 (Japan); Department of Physics, Graduate School of Humanities and Sciences, Ochanomizu University, Tokyo 112-8610 (Japan); Nojiri, Shin' ichi [Kobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Nagoya 464-8602 (Japan); Department of Physics, Nagoya University, Nagoya 464-8602 (Japan); Odintsov, Sergei D. [Consejo Superior de Investigaciones Científicas, ICE/CSIC-IEEC, Campus UAB, Facultat de Ciències, Torre C5-Parell-2a pl, E-08193 Bellaterra (Barcelona) (Spain); Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona (Spain); Tomsk State Pedagogical University, 634061 Tomsk (Russian Federation); National Research Tomsk State University, 634050 Tomsk (Russian Federation); King Abdulaziz University, Jeddah (Saudi Arabia)

    2014-10-07

    We reconstruct scalar field theories to realize inflation compatible with the BICEP2 result as well as the Planck. In particular, we examine the chaotic inflation model, natural (or axion) inflation model, and an inflationary model with a hyperbolic inflaton potential. We perform an explicit approach to find out a scalar field model of inflation in which any observations can be explained in principle.

  3. Distal clavicle fractures in children☆

    Science.gov (United States)

    Labronici, Pedro José; da Silva, Ricardo Rodrigues; Franco, Marcos Vinícius Viana; Labronici, Gustavo José; Pires, Robinson Esteves Santos; Franco, José Sergio

    2015-01-01

    Objective To analyze fractures of the distal clavicle region in pediatric patients. Methods Ten patients between the ages of five to eleven years (mean of 7.3 years) were observed. Nine patients were treated conservatively and one surgically. All the fractures were classified using the Nenopoulos classification system. Results All the fractures consolidated without complications. Conservative treatment was used for nine patients, of whom three were in group IIIB, three IIb, two IIa and one IV. The only patient who was treated surgically was a female patient of eleven years of age with a group IV fracture. Conclusion The treatment indication for distal fractures of the clavicle in children should be based on the patient's age and the displacement of the fragments. PMID:26962489

  4. Distal clavicle fractures in children

    Directory of Open Access Journals (Sweden)

    Pedro José Labronici

    2016-02-01

    Full Text Available ABSTRACT OBJECTIVE: To analyze fractures of the distal clavicle region in pediatric patients. METHODS: Ten patients between the ages of five to eleven years (mean of 7.3 years were observed. Nine patients were treated conservatively and one surgically. All the fractures were classified using the Nenopoulos classification system. RESULTS: All the fractures consolidated without complications. Conservative treatment was used for nine patients, of whom three were in group IIIB, three IIb, two IIa and one IV. The only patient who was treated surgically was a female patient of eleven years of age with a group IV fracture. CONCLUSION: The treatment indication for distal fractures of the clavicle in children should be based on the patient's age and the displacement of the fragments.

  5. Chondroblastoma of the distal phalanx.

    Science.gov (United States)

    Gregory, James R; Lehman, Thomas P; White, Jeremy R; Fung, Kar-Ming

    2014-05-01

    Chondroblastoma is a rare, benign primary bone tumor that usually occurs at the epiphysis of long bones. The authors present an example of the diagnosis and successful treatment of this neoplasm in an exceedingly rare location in the distal phalanx. Clinical and radiographic outcomes after 68 months of follow-up are presented. A 15-year-old, right hand-dominant, boy developed painful swelling of the right ring finger. Radiographs revealed a radiolucent lesion of the distal phalanx with expansile remodeling of the bone. An excisional biopsy was performed with curettage and bone grafting of the lesion. The diagnosis of chondroblastoma was made based on pathologic evaluation of the biopsy specimen. Sixty-six months after surgical treatment, the patient was free of recurrence and metastatic disease with excellent clinical and functional outcomes. To the authors' knowledge, this represents only the second reported case of chondroblastoma of the distal phalanx. The diagnosis of chondroblastoma in this rare location was made by pathologic review of the resection specimen. It is imperative to confirm the diagnosis of any resected bone specimen even when the concern for an aggressive or malignant lesion is low. A tumor presenting in an unusual location may require a change in treatment or surveillance.

  6. Tendon of the long head of the biceps originating from the rotator cuff - An uncommon anatomical variation: case report

    Directory of Open Access Journals (Sweden)

    Carlos Vicente Andreoli

    2016-02-01

    Full Text Available ABSTRACT Anatomical variations at the origin of the biceps tendon have been described by several authors, but occurrences of an origin in the supraspinatus are rare. It is unclear whether this variation might contribute toward pathological conditions of the shoulder. Our objective here was to describe a case of an anatomical variation in the origin of the tendon of the long head of the biceps. The clinical information, preoperative images and arthroscopic images relating to a patient with an aberrant origin of the long head of the biceps, which was observed during shoulder arthroscopy, were reviewed. In this case study, the origin of the biceps was found in the rotator cuff, without any origin from the supraglenoid tubercle or upper labrum. This variant did not seem to contribute toward the pathological condition of the shoulder, and standard treatment for the concomitant condition was sufficient for treating it.

  7. The “Anchor Shape” Technique for Long Head of the Biceps Tenotomy to Avoid the Popeye Deformity

    OpenAIRE

    Narvani, A. Ali; Atoun, Ehud; Van Tongel, Alexander; Sforza, Giuseppe; Levy, Ofer

    2013-01-01

    Surgical options for symptomatic pathologies of the long head of the biceps (LHB) include tenotomy and tenodesis. Tenotomy is surgically simple and quick, does not require immobilization, and avoids implant complications. However, it is associated with residual “Popeye” muscle deformity and biceps muscle cramps. Tenodesis avoids Popeye deformity, but it is technically a more difficult operation with a longer rehabilitation period and possible implant complications. The purpose of this report ...

  8. Disorders of the long head of the biceps: tenotomy versus tenodesis.

    Science.gov (United States)

    Ribeiro, Fabiano Rebouças; Ursolino, André Petry Sandoval; Ramos, Vinicius Ferreira Lima; Takesian, Fernando Hovaguim; Tenor Júnior, Antonio Carlos; Costa, Miguel Pereira da

    2017-01-01

    Disorders of the long head of biceps tendon are common in clinical practice. Their causes could be degenerative, inflammatory, instability (subluxation or luxation) or traumatic. They are generally associated to other diseases of the shoulder, mainly rotator cuff injuries. Currently, there is controversy in the literature regarding the indications for surgical treatment and the choice of the best technique for each case, due to the possibility of esthetic deformity, loss of muscle strength, and residual pain. The objective of this study was to identify the indications for surgical treatment, the best surgical technique, and the advantages and disadvantages of each technique described in the orthopedic literature for the treatment of long head of biceps tendon injuries. A revision of the orthopedic medical literature on the following databases: Biblioteca Regional de Medicina (BIREME), Medline, PubMed, Cochrane Library and Google Scholar, comprising articles published in the period from 1991 to 2015.

  9. Disorders of the long head of the biceps: tenotomy versus tenodesis

    Directory of Open Access Journals (Sweden)

    Fabiano Rebouças Ribeiro

    Full Text Available ABSTRACT Disorders of the long head of biceps tendon are common in clinical practice. Their causes could be degenerative, inflammatory, instability (subluxation or luxation or traumatic. They are generally associated to other diseases of the shoulder, mainly rotator cuff injuries. Currently, there is controversy in the literature regarding the indications for surgical treatment and the choice of the best technique for each case, due to the possibility of esthetic deformity, loss of muscle strength, and residual pain. The objective of this study was to identify the indications for surgical treatment, the best surgical technique, and the advantages and disadvantages of each technique described in the orthopedic literature for the treatment of long head of biceps tendon injuries. A revision of the orthopedic medical literature on the following databases: Biblioteca Regional de Medicina (BIREME, Medline, PubMed, Cochrane Library and Google Scholar, comprising articles published in the period from 1991 to 2015.

  10. Calcific tendinitis of biceps femoris: an unusual site and cause for lateral knee pain.

    Science.gov (United States)

    Chan, Warwick; Chase, Helen Emily; Cahir, John G; Walton, Neil Patrick

    2016-07-29

    A 37-year-old man presented to the acute knee and sports medicine clinic with atraumatic lateral knee pain. He had point tenderness over the lateral aspect of his knee which had not settled with anti-inflammatory medications. Imaging revealed a large opaque lesion lateral to the knee and although there was no clear mechanism, injury to the posterolateral corner was considered. An MRI subsequently revealed a rare case of calcific tendinitis to the biceps femoris tendon insertion. This condition was self-limiting and did not require interventions such as steroid injections. This is the first reported case of calcific tendinitis of biceps femoris as a cause of acute knee pain. 2016 BMJ Publishing Group Ltd.

  11. Refining intermediate inflation in the light of Planck 2013 and BICEP2 results

    CERN Document Server

    Rezazadeh, K; Karimi, P

    2014-01-01

    Here, we first study the intermediate inflation in the standard canonical framework and conclude that it is not compatible with observational results deduced from the Planck 2013 and BICEP2. Then, we consider the intermediate inflation in a non-canonical context with a power-like Lagrangian. We obtain that within this framework, the intermediate inflation can be consistent with the observations of Planck 2013 and BICEP2. Also, we estimate the non-Gaussianity parameter in our model and we see that it lies in the range predicted by Planck 2013. Furthermore, we propose an idea in our non-canonical model to overcome the central drawback of intermediate inflation which is the fact that intermediate inflation never ends. We show explicitly that this modification doesn't alter the nature of intermediate inflation until the time of horizon exit.

  12. "Relaxed" biceps proximal tenodesis: an arthroscopic technique with decreased residual tendon tension.

    Science.gov (United States)

    Valenti, Philippe; Benedetto, Ivan; Maqdes, Ali; Lima, Sara; Moraiti, Constantina

    2014-10-01

    Tenodesis of the long head of the biceps tendon (LHB) at the upper part of the bicipital groove has been related to persistent postoperative bicipital pain. This is possibly due to the inflammation of the remaining tendon within the groove. This, in turn, could be attributed to the continual mechanical stress placed on the tendon in the narrow bicipital groove. Theoretically, should the LHB be more "relaxed," the mechanical stress applied on it would be diminished. On the basis of this rationale, we present an arthroscopic biceps tenodesis technique, according to which the tendon is fixed at the entrance of the bicipital groove, using a bioabsorbable screw, relaxed by 5 mm. In this lax position, the residual LHB tension is expected to be decreased compared with the initial tension, whereas no cosmetic deformity (Popeye sign) or impaired muscular performance is anticipated.

  13. A viable Starobinsky-like inflationary scenario in the light of Planck and BICEP2 results

    CERN Document Server

    Basilakos, S; Solà, J

    2014-01-01

    The recent CMB data from Planck and BICEP2 observations have opened a new window for inflationary cosmology. In this Essay we compare three Starobinsky-like inflationary scenarios: (i) the original Starobinsky proposal; (ii) a family of dynamically broken SUGRA models; and (iii) a class of "decaying" vacuum $\\Lambda(H)$ cosmologies. We then focus on the $\\Lambda(H)$ variant, which spans the complete cosmic history of the universe from an early inflationary stage, followed by the "graceful exit" into the standard radiation regime, the matter epoch and, finally, the late-time accelerated expansion. Computing the effective potential we find that the "running" $\\Lambda(H)$ models also provide a prediction for the tensor-to-scalar ratio of the CMB spectrum, $r \\simeq 0.16$, which is compatible to within $1\\sigma$ with the value $r=0.20^{+0.07}_{-0.05}$ recently measured by the BICEP2 collaboration.

  14. Reconstruction of scalar field theories realizing inflation consistent with the Planck and BICEP2 results

    Directory of Open Access Journals (Sweden)

    Kazuharu Bamba

    2014-10-01

    Full Text Available We reconstruct scalar field theories to realize inflation compatible with the BICEP2 result as well as the Planck. In particular, we examine the chaotic inflation model, natural (or axion inflation model, and an inflationary model with a hyperbolic inflaton potential. We perform an explicit approach to find out a scalar field model of inflation in which any observations can be explained in principle.

  15. Biomechanical evaluation of a unicortical button versus interference screw for subpectoral biceps tenodesis.

    Science.gov (United States)

    Arora, Amarpal S; Singh, Anshu; Koonce, Ryan C

    2013-04-01

    The purpose of this study was to evaluate and compare the biomechanical properties of a unicortical button with an interference screw used for subpectoral biceps tenodesis. We also describe the anatomic dangers of bicortical button use in the subpectoral location. Twenty-eight fresh-frozen human cadaveric shoulders with a mean age of 52 years were studied. The specimens were randomly divided into 4 experimental biceps tenodesis groups (n = 7): unicortical button, interference screw, bicortical suspensory button, and bicortical suspensory with interference screw (Arthrex, Naples, FL). Each tenodesis specimen was mounted on a mechanical testing machine, preloaded for 2 minutes at 5 N, cycled from 5 to 70 N for 500 cycles (1 Hz), and loaded to failure (1 mm/s). We determined the mode of failure and computed the ultimate load to failure, yield load, pullout stiffness, and displacement at peak load. Calculations of the distance between the axillary and radial nerves with respect to the bicortical buttons were also calculated in 6 specimens. There was no statistically significant difference (P > .05) among groups in terms of age, ultimate load to failure, pullout stiffness, or displacement at peak load. Suture-tendon interface failure was the most commonly observed mode of failure. The axillary nerve was on average 7.8 mm from the bicortical button; however, in 6 specimens the nerve was less than 3 mm away. The use of a unicortical button for subpectoral biceps tenodesis provides biomechanical properties similar to the use of an interference screw. In addition, the use of a bicortical button in this area of the proximal humerus puts the axillary nerve at risk. Using a unicortical button subpectoral biceps method may provide a surgeon with a safe and technically easy and reproducible technique while providing similar biomechanical properties to a known standard implant. Copyright © 2013 Arthroscopy Association of North America. Published by Elsevier Inc. All rights

  16. Assessment of instability of the long head of the biceps tendon by MRI

    Energy Technology Data Exchange (ETDEWEB)

    Spritzer, C.E.; Collins, A.J. [Dept. of Radiology, Duke University Medical Center, Durham, NC (United States); Cooperman, A. [Center for Diagnostic Imaging, Winter Park, FL (United States); Speer, K.P. [Dept. of Orthopaedic Sports Medicine, Duke University Medical Center, Durham, NC (United States)

    2001-04-01

    Objective. To determine whether MRI can identify instability of the long head of the biceps tendon (LBT) in the rotator interval.Design and patients. A retrospective review was carried out of 19 patients, all arthroscopically examined, nine of whom had surgically confirmed instability of the LBT.Results. A LBT perched on the lesser tuberosity correctly indicated all nine cases of instability with one false positive. In six of seven cases where the LBT was oval in shape, no instability of the biceps tendon existed, whereas LBT instability was present in eight of 12 patients with a flat long head of the biceps tendon. In seven of eight acutely angled intertubercular sulci there was no instability of the LBT while eight of 11 obtusely angled sulci were associated with LBT instability. By consensus impression, instability of the LBT could be determined with 67% sensitivity, 90% specificity, 86% positive predictive value, and 75% negative predictive value.Conclusions. A flat LBT perched on the lesser tuberosity with an obtusely angled intertubercular sulcus suggests the diagnosis of instability of the LBT in the correct clinical setting. (orig.)

  17. Killing the straw man: Does BICEP prove inflation at the GUT scale?

    Energy Technology Data Exchange (ETDEWEB)

    Dent, James B. [Department of Physics, University of Louisiana at Lafayette, Lafayette, LA 70504 (United States); Krauss, Lawrence M. [Department of Physics and School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287 (United States); Mount Stromlo Observatory, Research School of Astronomy and Astrophysics, Australian National University, Weston, ACT, 2611 (Australia); Mathur, Harsh [Department of Physics, Case Western Reserve University, Cleveland, OH 44106-7079 (United States)

    2014-09-07

    The surprisingly large value of r, the ratio of power in tensor to scalar density perturbations in the CMB reported by the BICEP2 Collaboration, if confirmed, provides strong evidence for Inflation at the GUT scale. While the Inflationary signal remains the best motivated source, a large value of r alone would still allow for the possibility that a comparable gravitational wave background might result from a self ordering scalar field (SOSF) transition that takes place later at somewhat lower energy. We find that even without detailed considerations of the predicted BICEP signature of such a transition, simple existing limits on the isocurvature contribution to CMB anisotropies would definitively rule out a contribution of more than 5% to r≈0.2. We also present a general relation for the allowed fractional SOSF contribution to r as a function of the ultimate measured value of r. These results point strongly not only to an inflationary origin of the BICEP2 signal, if confirmed, but also to the fact that if the GUT scale is of order 10{sup 16} GeV then either the GUT transition happens before Inflation or the Inflationary transition and the GUT transition must be one and the same.

  18. Optical Characterization of the BICEP3 CMB Polarimeter at the South Pole

    CERN Document Server

    Karkare, K S; Ahmed, Z; Alexander, K D; Amiri, M; Barkats, D; Benton, S J; Bischoff, C A; Bock, J J; Boenish, H; Bowens-Rubin, R; Buder, I; Bullock, E; Buza, V; Connors, J; Filippini, J P; Fliescher, S T; Grayson, J A; Halpern, M; Harrison, S A; Hilton, G C; Hristov, V V; Hui, H; Irwin, K D; Kang, J H; Karpel, E; Kefeli, S; Kernasovskiy, S A; Kovac, J M; Kuo, C L; Leitch, E M; Lueker, M; Megerian, K G; Monticue, V; Namikawa, T; Netterfield, C B; Nguyen, H T; O'Brient, R; Ogburn, R W; Pryke, C; Reintsema, C D; Richter, S; Germaine, M T St; Schwarz, R; Sheehy, C D; Staniszewski, Z K; Steinbach, B; Teply, G P; Thompson, K L; Tolan, J E; Tucker, C; Turner, A D; Vieregg, A G; Wandui, A; Weber, A; Willmert, J; Wong, C L; Wu, W L K; Yoon, K W

    2016-01-01

    BICEP3 is a small-aperture refracting cosmic microwave background (CMB) telescope designed to make sensitive polarization maps in pursuit of a potential B-mode signal from inflationary gravitational waves. It is the latest in the BICEP/Keck Array series of CMB experiments at the South Pole, which has provided the most stringent constraints on inflation to date. For the 2016 observing season, BICEP3 was outfitted with a full suite of 2400 optically coupled detectors operating at 95 GHz. In these proceedings we report on the far field beam performance using calibration data taken during the 2015-2016 summer deployment season in situ with a thermal chopped source. We generate high-fidelity per-detector beam maps, show the array-averaged beam profile, and characterize the differential beam response between co-located, orthogonally polarized detectors which contributes to the leading instrumental systematic in pair differencing experiments. We find that the levels of differential pointing, beamwidth, and elliptici...

  19. Simple brane-world inflationary models in light of BICEP2

    CERN Document Server

    Okada, Nobuchika

    2014-01-01

    Motivated by the recent CMB $B$-mode observation announced by the BICEP2 collaboration, we study simple inflationary models in the Randall-Sundrum brane-world cosmology. Brane-world cosmological effects alter the inflationary predictions of the spectral index ($n_s$) and the tensor-to-scalar ratio ($r$) from those obtained in the standard cosmology. In particular, the tensor-to-scalar ratio is enhanced in the presence of the 5th dimension, and simple inflationary models which predict small $r$ values in the standard cosmology can yield $r$ values being compatible with the BICEP2 result, $r=0.2^{+0.07}_{-0.05}$. Confirmation of the BICEP2 result and more precise measurements of $n_s$ and $r$ in the near future allow us to constrain the 5-dimensional Planck mass ($M_5$) of the brane-world scenario. We also discuss the post inflationary scenario, namely, reheating of the universe through inflaton decay to the Standard Model particles. When we require the renormalizability of the inflationary models, the inflaton...

  20. Distal realignment (tibial tuberosity transfer).

    Science.gov (United States)

    Feller, Julian Ashley

    2012-09-01

    Although tibial tuberosity (TT) transfer has for many years been the basis of many protocols for the management of patellar instability, the role of pure medial transfer in particular appears to be declining. In contrast, the greater recognition of the importance of patella alta as a predisposing factor to recurrent patellar dislocation has resulted in a resurgence in the popularity of distal TT transfer. When TT transfer is performed, the direction and amount of transfer is based on the patellar height and the lateralization of the TT relative to the trochlear groove. Patellar height is best assessed on a lateral radiograph with the knee in flexion using a ratio that uses the articular surface of the patella in relation to the height above the tibia. Assessment of lateralization of the TT relative to the trochlear groove can be made using either computed tomography or magnetic resonance imaging scans.

  1. Core Muscle Activation During Unstable Bicep Curl Using a Water-Filled Instability Training Tube.

    Science.gov (United States)

    Glass, Stephen C; Blanchette, Taylor W; Karwan, Lauren A; Pearson, Spencer S; OʼNeil, Allison P; Karlik, Dustin A

    2016-11-01

    Glass, SC, Blanchette, TW, Karwan, LA, Pearson, SS, O'Neil, AP, and Karlik, DA. Core muscle activation during unstable bicep curl using a water-filled instability training tube. J Strength Cond Res 30(11): 3212-3219, 2016-The purpose of this study was to assess compensatory muscle activation created during a bicep curl using a water-filled, unstable lifting tube. Ten men (age = 21 ± 1.6 years, height = 180.0 ± 3.3 cm, mass = 87.4 ± 15.0 kg) and 10 women (age = 19.6 ± 1.3 years, height = 161.4 ± 12.0 cm, mass = 61.2 ± 7.4 kg) completed bicep curls using an 11.4-kg tube partially filled with water during a 50% open-valve, 100% open, and control setting. Subjects completed 8 repetitions within each condition with integrated electromyographic signal (converted to percent maximal voluntary contraction) of the bicep, deltoid, rectus abdominus, and paraspinal muscles measured. Compensatory activation was determined using the natural log of coefficient of variation across concentric (CON) and eccentric (ECC) contractions. There were no differences between gender for any condition. Significant variability was seen across treatments for paraspinal muscles for CON and ECC at 50% (CON LnCV = 3.13 ± 0.56%, ECC LnCV = 3.34 ± 0.58%) and 100% (CON = 3.24 ± 0.34%, ECC = 3.46 ± 0.35%) compared with control (CON = 2.59 ± 0.47%, ECC = 2.80 ± 0.61%). Deltoid variability was greater at the 100% open setting (CON = 3.51 ± 0.53%, ECC = 3.56 ± 0.36%) compared with control (CON = 2.98 ± 0.35%, ECC = 2.97 ± 0.45%). The abdominal CON 100% showed variability (3.02 ± 0.47%) compared with control (2.65 ± 0.43%). Bicep activation remained unvaried. Compensatory activation of postural muscles contribute to postural stability. This device may be a useful tool for neuromuscular training leading to improved stability and control.

  2. BICEP2, Planck, spinorial space-time, pre-Big Bang.

    Directory of Open Access Journals (Sweden)

    Gonzalez-Mestres Luis

    2015-01-01

    Full Text Available The field of Cosmology is currently undergoing a positive and constructive crisis. Controversies concerning inflation are not really new. But after the 2013-2014 Planck and BICEP2 announcements, and the more recent joint analysis by Planck, BICEP2 and the Keck Array (PBKA, the basic issues can involve more direct links between the Mathematical Physics aspects of cosmological patterns and the interpretation of experimental results. Open questions and new ideas on the foundations of Cosmology can emerge, while future experimental and observational programs look very promising. The BICEP2 result reporting an excess of B-mode polarization signal of the cosmic microwave background (CMB radiation was initially presented as a signature of primordial gravitational waves from cosmic inflation. But polarized dust emission can be at the origin of such a signal, and the evidence claimed by BICEP2 is no longer secure after the PBKA analysis. Furthermore, even assuming that significant CMB B-mode polarization has indeed been generated by the early Universe, its theoretical and cosmological interpretation would be far from obvious. Inflationary gravitational waves are not the only possible source of primordial CMB B-modes. Alternative cosmologies such as pre-Big Bang patterns and the spinorial space-time (SST we introduced in 1996-97 can naturally produce this polarization. Furthermore, the SST automatically generates for each comoving observer a local privileged space direction (PSD whose existence may have been confirmed by Planck data. If such a PSD exists, vector perturbations have most likely been strong in the early Universe and may have produced CMB B-modes. Pre-Big Bang cosmologies can also generate gravitational waves in the early Universe without inflation. After briefly describing detectors devoted to the study of the CMB polarization, we discuss the situation emerging from BICEP2 results, Planck results and the PBKA analysis. In particular, we

  3. Biomechanical comparison of intramedullary cortical button fixation and interference screw technique for subpectoral biceps tenodesis.

    Science.gov (United States)

    Buchholz, Arne; Martetschläger, Frank; Siebenlist, Sebastian; Sandmann, Gunther H; Hapfelmeier, Alexander; Lenich, Andreas; Millett, Peter J; Stöckle, Ulrich; Elser, Florian

    2013-05-01

    The purpose of this study was to biomechanically evaluate a new technique of intramedullary cortical button fixation for subpectoral biceps tenodesis and to compare it with the interference screw technique. We compared intramedullary unicortical button fixation (BicepsButton; Arthrex, Naples, FL) with interference screw fixation (Bio-Tenodesis screw; Arthrex) for subpectoral biceps tenodesis using 10 pairs of human cadaveric shoulders and ovine superficial digital flexor tendons. After computed tomography analysis, the specimens were mounted in a testing machine. Cyclic loading was performed (preload, 5 N; 5 to 70 N at 1.5 Hz for 500 cycles), recording the displacement of the tendon. Load to failure and stiffness were subsequently evaluated with a load-to-failure test (1 mm/s). Cyclic loading showed a displacement of 11.3 ± 2.8 mm for intramedullary cortical button fixation and 9 ± 1.7 mm for interference screw fixation (P = .112). All specimens within the cortical button group passed the cyclic loading test, whereas 3 of 10 specimens within the interference screw group failed by tendon slippage at the screw-tendon-bone interface after a mean of 252 cycles (P = .221). Load-to-failure testing showed a mean load to failure of 218.8 ± 40 N and stiffness of 27.2 ± 7.2 N/mm for the intramedullary cortical button technique. For the interference screw, the mean load to failure was 212.1 ± 28.3 N (P = .625) and stiffness was 40.4 ± 13 N/mm (P = .056). We could not find any major differences in load to failure when comparing the tested techniques for subpectoral biceps tenodesis. Intramedullary cortical button fixation showed no failure during cyclic testing. However, we found a 30% failure rate (3 of 10) for the interference screw fixation. Intramedullary cortical button fixation provides an alternative technique for subpectoral biceps tenodesis with comparable and, during cyclic loading, even superior biomechanical properties to interference screw fixation

  4. Testing procedures for SLAP lesions of the shoulder involving contraction and torsion of biceps long head and glenohumeral glides.

    Science.gov (United States)

    Misra, Sumeer; Watson, Lyn; Taylor, Nicholas F; Green, Rodney A; Hairodin, Zaki

    2011-11-01

    Testing procedures for SLAP lesions of the shoulder can combine resisted elbow flexion, forearm pronation and supination, and glenohumeral glides. These procedures reproduce symptoms by increasing biceps long head active tension or passive torsion, and by placing the shoulder in an unstable position. We compared activation of biceps long head and pain intensity, between supinated and pronated forearm positions, between different glides, and between individuals with and without shoulder impairment. A case control study. Twelve participants with suspected SLAP lesions and twelve with no history of shoulder injury volunteered. Electromyography measured muscle activity in biceps long head, normalised against maximum voluntary isometric contraction (MVIC). Subjective pain intensity scores were recorded. Biceps long head activity was greater in forearm supination (mean 39% MVIC) than pronation (mean 24% MVIC), but pain was higher in pronation (mean 4.5/10) than supination (3.2/10). Biceps long head activity was greater when testing without a glide, but there was no difference in pain comparing the glide conditions. The impaired group experienced more pain (mean 3.9/10) than controls (mean 0.3/10) but there was no difference in shoulder muscle activity. No one combination of testing procedures appeared to be diagnostic of SLAP lesions in our sample. This study supports the theory that biceps long head acts as a stabiliser of the shoulder, and suggests that clinical testing procedures for SLAP lesions may need to inhibit biceps long head activity. The addition of glides to SLAP testing procedures did not affect the reproduction of pain.

  5. Soft tissue tenodesis of the long head of the biceps tendon associated to the Roman Bridge repair

    Directory of Open Access Journals (Sweden)

    Maffulli Nicola

    2008-06-01

    Full Text Available Abstract Background Rotator cuff tears are frequently associated with pathologies of the long head of the biceps tendon (LHBT. Tenotomy and tenodesis of the LHBT are commonly used to manage disorders of the LHBT. Methods We present an arthroscopic soft tissue LHBT tenodesis associated with a Roman Bridge (double pulley – suture bridges repair Results Two medial row 5.5-mm Bio-Corkscrew suture anchors (Arthrex, Naples, FL, double-loaded with No. 2 FiberWire sutures (Arthrex, Naples, FL, are placed in the medial aspect of the footprint. A shuttle is passed through an anterior point of the rotator cuff and through the LHBT by means of a Penetrator or a BirdBeak suture passer (Arthrex, Naples, FL. A tenotomy of the LHBT is performed. All the sutures from the anteromedial anchor are passed through a single anterior point in the rotator cuff using a shuttle technique. All the sutures from the posteromedial anchor are passed through a single posterior point in the rotator cuff. The sutures in the medial row are tied using the double pulley technique. A suture limb is retrieved from each of the medial anchors and manually tied as a six-throw surgeon's knot over a metal rod. The two free suture limbs are pulled to transport the knot over the top of the tendon bridge. The two free suture limbs are then used to produce suture bridges over the tendon, using a Pushlock (Arthrex, Naples, FL, placed 1 cm distal to the lateral edge of the footprint. The same double pulley – suture bridges technique is repeated for the other two suture limbs from the two medial anchors. Conclusion This technique allows to perform a double pulley – suture bridges repair for a rotator cuff tear, associated with a soft tissue tenodesis for the management of LHBT pathology. The tenodesis of the LHBT is performed just with the passage of a shuttle inside the LHBT, after passing it through the anterior portion of the rotator cuff, with successive detachment of the LHBT from the

  6. Interlocking nailing in fractures of distal tibia

    Directory of Open Access Journals (Sweden)

    Akshay Phadke

    2016-04-01

    Conclusions: Intramedullary nailing is an effective alternative for the treatment of distal metaphyseal tibial fractures. A proper patient selection, adjuvant fixation of fibula and use of at least two distal interlocking screws is suggested for better outcome. [Int J Res Med Sci 2016; 4(4.000: 1132-1135

  7. Giant cell tumour of distal ulna.

    Science.gov (United States)

    Archik, Shreedhar; Tripathi, Sanjay Kumar; Nanda, Saurav Narayan; Choudhari, Ashlesh

    2017-01-01

    Giant cell tumor (GCT) of distal end epiphysis ulna is a rare presentation, and only few cases are reported in the scientific literature. We report a case of GCT of distal end epiphysis ulna treated at our Tertiary Care Hospital, Mumbai.

  8. Robotic distal pancreatectomy: a valid option?

    Science.gov (United States)

    Jung, M K; Buchs, N C; Azagury, D E; Hagen, M E; Morel, P

    2013-10-01

    Although reported in the literature, conventional laparoscopic approach for distal pancreatectomy is still lacking widespread acceptance. This might be due to two-dimensional vision and decreased range of motion to reach and safely dissect this highly vascularized retroperitoneal organ by laparoscopy. However, interest in minimally invasive access is growing ever since and the robotic system could certainly help overcome limitations of the laparoscopic approach in the challenging domain of pancreatic resection, notably in distal pancreatectomy. Robotic distal pancreatectomy with and without spleen preservation has been reported with encouraging outcomes for benign and borderline malignant disease. As a result of upgraded endowristed manipulation and three-dimensional visualization, improved outcome might be expected with the launch of the robotic system in the procedure of distal pancreatectomy. Our aim was thus to extensively review the current literature of robot-assisted surgery for distal pancreatectomy and to evaluate advantages and possible limitations of the robotic approach.

  9. Treatment of distal clavicle fracture with distal radius volar locking compression plate

    Institute of Scientific and Technical Information of China (English)

    YU Chao; SUN Yue-hua; ZHAO Chang-qing; SHI Ding-wei; WANG You

    2009-01-01

    Objective: To observe the early clinical outcomes of the internal fixation with distal radius volar locking compression plate (LCP) in treatment of distal clavicle fracture.Methods: Six patients with unilateral distal clavicle fractures, identified as type Ⅱ according to Neer classification system, including 4 males and 2 females, were treated with open reduction and internal fixation using a distal radius volar LCP. Bone union was evaluated by routine X-ray radiography, and shoulder joint function were assessed by Constant score system.Results: All fractures achieved bone union at 6 to 8 weeks postoperatively, and Constant scores ranged from 95 to 100 at the postoperative 10 to 12 weeks.Conclusion: Fixation of distal clavicle fracture with distal radius volar LCP demonstrates excellent effects of bone union with rarely early complications, thus providing a new technique to treat distal clavicle fracture.

  10. Molecular genetics of distal hereditary motor neuropathies.

    Science.gov (United States)

    Irobi, Joy; De Jonghe, Peter; Timmerman, Vincent

    2004-10-01

    Inherited peripheral neuropathies comprise a wide variety of diseases primarily affecting the peripheral nervous system. The best-known peripheral neuropathy is Charcot-Marie-Tooth disease (CMT) described in 1886 by J.-M. Charcot, P. Marie and H.H. Tooth. In 1980, A.E. Harding and P.K. Thomas showed that in a large group of individuals with CMT, several only had motor abnormalities on clinical and electrophysiological examination, whereas sensory abnormalities were absent. This exclusively motor variant of CMT was designated as spinal CMT or hereditary distal spinal muscular atrophy, and included in the distal hereditary motor neuropathies (distal HMN). The distal HMN are clinically and genetically heterogeneous and are subdivided according to the mode of inheritance, age at onset and clinical evolution. Since the introduction of positional cloning, 12 chromosomal loci and seven disease-causing genes have been identified for autosomal dominant and recessive distal HMN. Most of the genes involved have housekeeping functions, as in RNA processing, translation synthesis, glycosylation, stress response, apoptosis, but also axonal trafficking and editing. Functional characterization of the mutations will help to unravel the cellular processes that underlie the specificity of motor neuropathies leading to neurogenic muscular atrophy of distal limb muscles. Here we review the recent progress of the molecular genetics of distal HMN and discuss the genes implicated.

  11. Use of Ultrasound to Monitor Biceps Femoris Mechanical Adaptations after Injury in a Professional Soccer Player.

    Science.gov (United States)

    Kellis, Eleftherios; Galanis, Nikiforos; Chrysanthou, Chrysanthos; Kofotolis, Nikolaos

    2016-03-01

    This study examined the use of ultrasound to monitor changes in the long head of the biceps femoris (BF) architecture of aprofessional soccer player with acute first-time hamstring strain. The player followed a 14 session physiotherapy treatment until return to sport. The pennation angle and aponeurosis strain of the long head of the biceps femoris (BF) were monitored at 6 occasions (up until 1 year) after injury. The size of the scar / hematoma was reduced by 63.56% (length) and 67.9% (width) after the intervention and it was almost non-traceable one year after injury. The pennation angle of the fascicles underneath the scar showed a decline of 51.4% at the end of the intervention while an increase of 109.2% of the fascicles which were closer to deep aponeurosis was observed. In contrast, pennation angle of fascicles located away from the injury site were relatively unaffected. The treatment intervention resulted in a 57.9% to 77.3% decline of maximum strain per unit of MVC moment and remained similar one year after the intervention. This study provided an example of the potential use of ultrasound-based parameters to link the mechanical adaptations of the injured muscle to specific therapeutic intervention. Key pointsChanges in fascicle orientation after biceps femoris mild tear were reduced after a 28 day intervention and remained similar one year after injury.Tendon/aponeurosis strain per unit of moment of force decreased during the course of the therapeutic intervention.Future studies could utilize ultrasonography to monitor mechanical responses after various types of hamstring injury and interventions in order to improve criteria for a safe return to sport.

  12. Degeneration of the long biceps tendon: comparison of MRI with gross anatomy and histology.

    Science.gov (United States)

    Buck, Florian M; Grehn, Holger; Hilbe, Monika; Pfirrmann, Christian W A; Manzanell, Silvana; Hodler, Jürg

    2009-11-01

    The objective of our study was to relate alterations in biceps tendon diameter and signal on MR images to gross anatomy and histology. T1-weighted, T2-weighted fat-saturated, and proton density-weighted fat-saturated spin-echo sequences were acquired in 15 cadaveric shoulders. Biceps tendon diameter (normal, flattened, thickened, and partially or completely torn) and signal intensity (compared with bone, fat, muscle, and joint fluid) were graded by two readers independently and in a blinded fashion. The distance of tendon abnormalities from the attachment at the glenoid were noted in millimeters. MRI findings were related to gross anatomic and histologic findings. On the basis of gross anatomy, there were six normal, five flattened, two thickened, and two partially torn tendons. Reader 1 graded nine diameter changes correctly, missed two, and incorrectly graded four. The corresponding values for reader 2 were seven, one, and five, respectively, with kappa = 0.75. Histology showed mucoid degeneration (n = 13), lipoid degeneration (n = 7), and fatty infiltration (n = 6). At least one type of abnormality was found in each single tendon. Mucoid degeneration was hyperintense compared with fatty infiltration on T2-weighted fat-saturated images and hyperintense compared with magic-angle artifacts on proton density-weighted fat-saturated images. MRI-based localization of degeneration agreed well with histologic findings. Diameter changes are specific but not sensitive in diagnosing tendinopathy of the biceps tendon. Increased tendon signal is most typical for mucoid degeneration but should be used with care as a sign of tendon degeneration.

  13. Multifrequency Beam Characterization and Systematics for the Keck Array, BICEP3, and Future CMB Polarization Experiments

    Science.gov (United States)

    Karkare, Kirit S.; BICEP/Keck Array Collaboration

    2017-01-01

    The BICEP/Keck Array cosmic microwave background (CMB) polarization experiments located at the South Pole are a series of small-aperture refracting telescopes focused on the degree-scale B-mode signature of inflationary gravitational waves. These highly-targeted experiments have produced the world's deepest maps of CMB polarization, leading to the most stringent constraints on the tensor-to-scalar ratio to date: sigma(r) = 0.024 and r current instrument and analysis technology will scale with detector count.

  14. Scalar perturbation in warm tachyon inflation in LQC in light of Plank and BICEP2

    Directory of Open Access Journals (Sweden)

    M.R. Setare

    2014-12-01

    Full Text Available We study warm-tachyon inflationary universe model in the context of the effective field theory of loop quantum cosmology. In slow-roll approximation the primordial perturbation spectrums for this model are calculated. We also obtain the general expressions of the tensor-to-scalar ratio and scalar spectral index. We develop this model by using exponential potential, the characteristics of this model are presented in great details. The parameters of the model are restricted by recent observational data from Planck, WMAP9 and BICEP2.

  15. Scalar perturbation in warm tachyon inflation in LQC in light of Plank and BICEP2

    Energy Technology Data Exchange (ETDEWEB)

    Setare, M.R., E-mail: rezakord@ipm.ir [Department of Science, Campus of Bijar, University of Kurdistan, Bijar (Iran, Islamic Republic of); Kamali, V., E-mail: vkamali1362@gmail.com [Department of Physics, Faculty of Science, Bu-Ali Sina University, Hamedan, 65178 (Iran, Islamic Republic of)

    2014-12-12

    We study warm-tachyon inflationary universe model in the context of the effective field theory of loop quantum cosmology. In slow-roll approximation the primordial perturbation spectrums for this model are calculated. We also obtain the general expressions of the tensor-to-scalar ratio and scalar spectral index. We develop this model by using exponential potential, the characteristics of this model are presented in great details. The parameters of the model are restricted by recent observational data from Planck, WMAP9 and BICEP2.

  16. Long Head of the Biceps Pathology Combined with Rotator Cuff Tears

    Directory of Open Access Journals (Sweden)

    Konstantinos Ditsios

    2012-01-01

    Full Text Available The long head of the biceps tendon (LHBT is an anatomic structure commonly involved in painful shoulder conditions as a result of trauma, degeneration, or overuse. Recent studies have pointed out the close correlation between LHBT lesions and rotator cuff (RCT tears. Clinicians need to take into account the importance of the LHBT in the presence of other shoulder pathologies. This paper provides an up-to-date overview of recent publications on anatomy, pathophysiology, diagnosis, classification, and current treatment strategies.

  17. Unusual presentation of an infected primary hydatid cyst of biceps femoris muscle

    Energy Technology Data Exchange (ETDEWEB)

    Tarhan, N.C.; Agildere, A.M. [Department of Radiology, Baskent University Faculty of Medicine, Fevzi Cakmak cad. 10. sok No:45, Bahcelievler 06490, Ankara (Turkey); Tuncay, I.C.; Demirors, H. [Department of Orthopedics, Baskent University Faculty of Medicine, Ankara (Turkey); Barutcu, O. [Department of Radiology, Baskent University Faculty of Medicine, Adana Teaching and Research Center, Adana (Turkey)

    2002-10-01

    Hydatid cysts of the musculoskeletal system are rare. Unusual magnetic resonance imaging (MRI) findings of an infected primary hydatid cyst of the biceps femoris muscle are presented in a 40-year-old man on hemodialysis for chronic renal failure. No daughter cysts were present within the mother cyst cavity, but there was a fatty nodule which has not previously been described in a muscular hydatid cyst. Although the cyst was infected secondarily, no surrounding soft tissue inflammatory reaction was noted. Hydatid cysts should be included in the differential diagnosis of unusual soft-tissue masses in regions where the disease is endemic. (orig.)

  18. Functionality of the contralateral biceps femoris reflex response during human walking

    DEFF Research Database (Denmark)

    Stevenson, Andrew James Thomas; Geertsen, Svend Sparre; Sinkjaer, Thomas

    2014-01-01

    In this study we examined the functionality of the contralateral biceps femoris (cBF) reflex response following ipsilateral knee extension joint rotations during the late stance phase of the gait cycle [1]. Stevenson et al. [1] proposed that the cBF reflex acts to slow the forward progression...... the treadmill velocity was altered concurrently or 50 ms after knee perturbation onset. These results, together with the finding that the cBF reflex response is under some cortical control [1], strongly suggest a functional role for the cBF reflex during walking that is adaptable to the environmental situation....

  19. [Bilateral calcifying tendinitis of the long tendon of the biceps associated with a SLAP lesion].

    Science.gov (United States)

    Mayayo Sinués, Esteban; Soriano Guillén, Antonia Pilar; Vela Marín, Ana Carmen; Martínez Pérez, Belén

    2010-01-01

    Calcifying tendinitis is a common disorder related to deposition of hidroxyapatite crystals, which is most common around the shoulder joint, involving the supraespinosus tendon. It can however, affect almost any tendon at its insertion. Clinical features are variable and include pain and inflammation that often resolves spontaneously. We present a case of bilateral calcifying tendinitis of the long head of the biceps tendon at its insertion on the superior glenoid rim associated with superior labrum antero-posterior tears (SLAP) confirmed by arthroscopy. Calcium deposits were surgically removed and the SLAP lesions were repaired.

  20. Unilateral Molar Distalization: A Nonextraction Therapy

    Directory of Open Access Journals (Sweden)

    M. Bhanu Prasad

    2012-01-01

    Full Text Available In the recent years, nonextraction treatment approaches and noncompliance therapies have become more popular in the correction of space discrepancies. One of the conventional approaches for space gaining in the arches without patient compliance is done by using certain extra oral appliances or intraoral appliance. The greatest advantage of certain appliances like fixed functional and molar distalization appliances is that they minimize the dependence on patient cooperation. Molar distalization appliances like pendulum appliance which distalizes the molar rapidly without the need of head gear can be used in patients as a unilateral space gaining procedure due to buccal segment crowding.

  1. The distal hereditary motor neuropathies.

    Science.gov (United States)

    Rossor, Alexander M; Kalmar, Bernadett; Greensmith, Linda; Reilly, Mary M

    2012-01-01

    The distal hereditary motor neuropathies (dHMN) comprise a heterogeneous group of diseases that share the common feature of a length-dependent predominantly motor neuropathy. Many forms of dHMN have minor sensory abnormalities and/or a significant upper-motor-neuron component, and there is often an overlap with the axonal forms of Charcot-Marie-Tooth disease (CMT2) and with juvenile forms of amyotrophic lateral sclerosis and hereditary spastic paraplegia. Eleven causative genes and four loci have been identified with autosomal dominant, recessive and X-linked patterns of inheritance. Despite advances in the identification of novel gene mutations, 80% of patients with dHMN have a mutation in an as-yet undiscovered gene. The causative genes have implicated proteins with diverse functions such as protein misfolding (HSPB1, HSPB8, BSCL2), RNA metabolism (IGHMBP2, SETX, GARS), axonal transport (HSPB1, DYNC1H1, DCTN1) and cation-channel dysfunction (ATP7A and TRPV4) in motor-nerve disease. This review will summarise the clinical features of the different subtypes of dHMN to help focus genetic testing for the practising clinician. It will also review the neuroscience that underpins our current understanding of how these mutations lead to a motor-specific neuropathy and highlight potential therapeutic strategies. An understanding of the functional consequences of gene mutations will become increasingly important with the advent of next-generation sequencing and the need to determine the pathogenicity of large amounts of individual genetic data.

  2. Arthroscopic tenodesis with tendon preservation for biceps long head tendinitis%关节镜下保留肌腱的固定术治疗肱二头肌长头肌腱炎

    Institute of Scientific and Technical Information of China (English)

    张尧; 何耀华; 白真龙; 章志望; 丁振禹; 孙奔奔

    2015-01-01

    Objective To explore the early clinical efficacy of arthroscopic tenodesis with tendon preservation for biceps long head tendinitis .Methods From October 2013 to April 2014 ,43 patients of biceps long head tendinitis were treated with arthroscopic tenodesis with tendon preservation .There were 16 males and 27 females ,with an average age of 50 .6 years (range ,39‐60 years) .American shoulder and elbow surgeons (ASES) ,Constant‐Murley shoulder score and the University of California at Los Angeles (UCLA) shoulder scale were assessed in pre‐operation and 3 ,6 ,12 months after opertion .Results All patients successfully completed the surgery .The average follow‐up period was 14 .2 months (range ,12‐18 months) .The mean of ASES score ,Constant‐Murley shoulder score and UCLA shoulder scale were 15 .65 ± 6 .06 ,39 .80 ± 11 .21 and 13 .25 ± 3 .77 in pre‐operation respectively ,and they were 34 .70 ± 2 .47 ,86 .00 ± 6 .35 and 31 .75 ± 2 .40 in 12 months after operation respectively . The outcomes demonstrated that all scores in 12 months after operation significantly improved(P<0 .05) .There was no pain recurrence and Popeye syndrome caused by transposition of tendon among these patients after operation . Conclusion Arthroscopic tenodesis with tendon preservation could achieve a satisfactory efficacy in the treatment of biceps long head tendinitis . This surgical method that preserves biceps brachii can effectively avoid the complications caused by transposition of tendon during fixation ,thus it is a better treatment method for biceps long head tendinitis .%目的:探讨肩关节镜下保留肱二头肌长头腱的肌腱固定术治疗肱二头肌长头肌腱炎早期临床疗效。方法2013年10月至2014年4月,对43例肱二头肌长头肌腱炎患者施行保留肱二头肌长头腱的肌腱固定术,其中男16例,女27例,年龄39~60岁,平均50.6岁。术前与术后3、6、12个月进行Constant‐Murley肩关节评分、加利

  3. Villous adenoma of the distal appendix.

    Science.gov (United States)

    Taylor, J V; Thomas, M G; Kelly, S; Sutton, R

    1997-04-01

    Villous adenoma confined to the distal appendix has not been previously reported in conjunction with acute apendicitis. The presence of an adenoma indicates a need for further investigation due to an association with neoplasia elsewhere.

  4. Genetics Home Reference: distal arthrogryposis type 1

    Science.gov (United States)

    ... This Page Bamshad M, Bohnsack JF, Jorde LB, Carey JC. Distal arthrogryposis type 1: clinical analysis of ... 5. Citation on PubMed Bamshad M, Jorde LB, Carey JC. A revised and extended classification of the ...

  5. Bradykinin type 2 receptor -9/-9 genotype is associated with triceps brachii muscle hypertrophy following strength training in young healthy men

    Directory of Open Access Journals (Sweden)

    Popadic Gacesa Jelena Z

    2012-11-01

    Full Text Available Abstract Background Bradykinin type 2 receptor (B2BRK genotype was reported to be associated with changes in the left-ventricular mass as a response to aerobic training, as well as in the regulation of the skeletal muscle performance in both athletes and non-athletes. However, there are no reports on the effect of B2BRK 9-bp polymorphism on the response of the skeletal muscle to strength training, and our aim was to determine the relationship between the B2BRK SNP and triceps brachii functional and morphological adaptation to programmed physical activity in young adults. Methods In this 6-week pretest-posttest exercise intervention study, twenty nine healthy young men (21.5 ± 2.7 y, BMI 24.2 ± 3.5 kg/m2 were put on a 6-week exercise protocol using an isoacceleration dynamometer (5 times a week, 5 daily sets with 10 maximal elbow extensions, 1 minute rest between sets. Triceps brachii muscle volumes were assessed by using magnetic resonance imaging before and after the strength training. Bradykinin type 2 receptor 9 base pair polymorphism was determined for all participants. Results Following the elbow extensors training, an average increase in the volume of both triceps brachii was 5.4 ± 3.4% (from 929.5 ± 146.8 cm3 pre-training to 977.6 ± 140.9 cm3 after training, p9 allele compared to individuals with one or two +9 alleles (−9/-9, 8.5 ± 3.8%; vs. -9/+9 and +9/+9 combined, 4.7 ± 4.5%, p B2BRK genotype (−9/-9, 50.2 ± 19.2%; vs. -9/+9 and +9/+9 combined, 46.8 ± 20.7%, p > 0.05. Conclusions We found that muscle morphological response to targeted training – hypertrophy – is related to polymorphisms of B2BRK. However, no significant influence of different B2BRK genotypes on functional muscle properties after strength training in young healthy non athletes was found. This finding could be relevant, not only in predicting individual muscle adaptation capacity to training or sarcopenia related to aging and inactivity, but also in

  6. Çocuklarda Distal Hipospadias Cerrahisi: Deneyimlerimiz

    OpenAIRE

    2013-01-01

    Objective: In this study, patients treated with distal hypospadias and discuscion of our results with literature were aimed. Material and Methods: 46 patients, who underwent distal hypospadias repair in the recent 2,5 years, were avaluated according to age, meatal localization, chordee status, the type of operation technique, postoperative urethral catheterization and hospitalization time, associated genitourinary anomalies, early and late complications. Results: 4 of 46 cases were treated wi...

  7. A Joint Analysis of BICEP2/Keck Array and Planck Data

    CERN Document Server

    BICEP2/Keck,; Ade, P A R; Aghanim, N; Ahmed, Z; Aikin, R W; Alexander, K D; Arnaud, M; Aumont, J; Baccigalupi, C; Banday, A J; Barkats, D; Barreiro, R B; Bartlett, J G; Bartolo, N; Battaner, E; Benabed, K; Benoit-Lévy, A; Benton, S J; Bernard, J -P; Bersanelli, M; Bielewicz, P; Bischoff, C A; Bock, J J; Bonaldi, A; Bonavera, L; Bond, J R; Borrill, J; Bouchet, F R; Boulanger, F; Brevik, J A; Bucher, M; Buder, I; Bullock, E; Burigana, C; Butler, R C; Buza, V; Calabrese, E; Cardoso, J -F; Catalano, A; Challinor, A; Chary, R -R; Chiang, H C; Christensen, P R; Colombo, L P L; Combet, C; Connors, J; Couchot, F; Coulais, A; Crill, B P; Curto, A; Cuttaia, F; Danese, L; Davies, R D; Davis, R J; de Bernardis, P; de Rosa, A; de Zotti, G; Delabrouille, J; Delouis, J -M; Désert, F -X; Dickinson, C; Diego, J M; Dole, H; Donzelli, S; Doré, O; Douspis, M; Dowell, C D; Duband, L; Ducout, A; Dunkley, J; Dupac, X; Dvorkin, C; Efstathiou, G; Elsner, F; Enßlin, T A; Eriksen, H K; Filippini, J P; Finelli, F; Fliescher, S; Forni, O; Frailis, M; Fraisse, A A; Franceschi, E; Frejsel, A; Galeotta, S; Galli, S; Ganga, K; Ghosh, T; Giard, M; Gjerløw, E; Golwala, S R; González-Nuevo, J; Górski, K M; Gratton, S; Gregorio, A; Gruppuso, A; Gudmundsson, J E; Halpern, M; Hansen, F K; Hanson, D; Harrison, D L; Hasselfield, M; Helou, G; Henrot-Versillé, S; Herranz, D; Hildebrandt, S R; Hilton, G C; Hivon, E; Hobson, M; Holmes, W A; Hovest, W; Hristov, V V; Huffenberger, K M; Hui, H; Hurier, G; Irwin, K D; Jaffe, A H; Jaffe, T R; Jewell, J; Jones, W C; Juvela, M; Karkare, K S; Kaufman, J P; Keating, B G; Kefeli, S; Keihänen, E; Kernasovskiy, S A; Keskitalo, R; Kisner, T S; Kneissl, R; Knoche, J; Knox, L; Kovac, J M; Krachmalnicoff, N; Kunz, M; Kuo, C L; Kurki-Suonio, H; Lagache, G; Lähteenmäki, A; Lamarre, J -M; Lasenby, A; Lattanzi, M; Lawrence, C R; Leitch, E M; Leonardi, R; Levrier, F; Lewis, A; Liguori, M; Lilje, P B; Linden-Vørnle, M; López-Caniego, M; Lubin, P M; Lueker, M; Macías-Pérez, J F; Maffei, B; Maino, D; Mandolesi, N; Mangilli, A; Maris, M; Martin, P G; Martínez-González, E; Masi, S; Mason, P; Matarrese, S; Megerian, K G; Meinhold, P R; Melchiorri, A; Mendes, L; Mennella, A; Migliaccio, M; Mitra, S; Miville-Deschênes, M -A; Moneti, A; Montier, L; Morgante, G; Mortlock, D; Moss, A; Munshi, D; Murphy, J A; Naselsky, P; Nati, F; Natoli, P; Netterfield, C B; Nguyen, H T; Nørgaard-Nielsen, H U; Noviello, F; Novikov, D; Novikov, I; O'Brient, R; Ogburn, R W; Orlando, A; Pagano, L; Pajot, F; Paladini, R; Paoletti, D; Partridge, B; Pasian, F; Patanchon, G; Pearson, T J; Perdereau, O; Perotto, L; Pettorino, V; Piacentini, F; Piat, M; Pietrobon, D; Plaszczynski, S; Pointecouteau, E; Polenta, G; Ponthieu, N; Pratt, G W; Prunet, S; Pryke, C; Puget, J -L; Rachen, J P; Reach, W T; Rebolo, R; Reinecke, M; Remazeilles, M; Renault, C; Renzi, A; Richter, S; Ristorcelli, I; Rocha, G; Rossetti, M; Roudier, G; Rowan-Robinson, M; Rubiño-Martín, J A; Rusholme, B; Sandri, M; Santos, D; Savelainen, M; Savini, G; Schwarz, R; Scott, D; Seiffert, M D; Sheehy, C D; Spencer, L D; Staniszewski, Z K; Stolyarov, V; Sudiwala, R; Sunyaev, R; Sutton, D; Suur-Uski, A -S; Sygnet, J -F; Tauber, J A; Teply, G P; Terenzi, L; Thompson, K L; Toffolatti, L; Tolan, J E; Tomasi, M; Tristram, M; Tucci, M; Turner, A D; Valenziano, L; Valiviita, J; Van Tent, B; Vibert, L; Vielva, P; Vieregg, A G; Villa, F; Wade, L A; Wandelt, B D; Watson, R; Weber, A C; Wehus, I K; White, M; White, S D M; Willmert, J; Wong, C L; Yoon, K W; Yvon, D; Zacchei, A; Zonca, A

    2015-01-01

    We report the results of a joint analysis of data from BICEP2/Keck Array and Planck. BICEP2 and Keck Array have observed the same approximately 400 deg$^2$ patch of sky centered on RA 0h, Dec. $-57.5\\deg$. The combined maps reach a depth of 57 nK deg in Stokes $Q$ and $U$ in a band centered at 150 GHz. Planck has observed the full sky in polarization at seven frequencies from 30 to 353 GHz, but much less deeply in any given region (1.2 $\\mu$K deg in $Q$ and $U$ at 143 GHz). We detect 150$\\times$353 cross-correlation in $B$-modes at high significance. We fit the single- and cross-frequency power spectra at frequencies above 150 GHz to a lensed-$\\Lambda$CDM model that includes dust and a possible contribution from inflationary gravitational waves (as parameterized by the tensor-to-scalar ratio $r$). We probe various model variations and extensions, including adding a synchrotron component in combination with lower frequency data, and find that these make little difference to the $r$ constraint. Finally we prese...

  8. Use of Ultrasound to Monitor Biceps Femoris Mechanical Adaptations after Injury in a Professional Soccer Player

    Directory of Open Access Journals (Sweden)

    Eleftherios Kellis, Nikiforos Galanis, Chrysanthos Chrysanthou, Nikolaos Kofotolis

    2016-03-01

    Full Text Available This study examined the use of ultrasound to monitor changes in the long head of the biceps femoris (BF architecture of aprofessional soccer player with acute first-time hamstring strain. The player followed a 14 session physiotherapy treatment until return to sport. The pennation angle and aponeurosis strain of the long head of the biceps femoris (BF were monitored at 6 occasions (up until 1 year after injury. The size of the scar / hematoma was reduced by 63.56% (length and 67.9% (width after the intervention and it was almost non-traceable one year after injury. The pennation angle of the fascicles underneath the scar showed a decline of 51.4% at the end of the intervention while an increase of 109.2% of the fascicles which were closer to deep aponeurosis was observed. In contrast, pennation angle of fascicles located away from the injury site were relatively unaffected. The treatment intervention resulted in a 57.9% to 77.3% decline of maximum strain per unit of MVC moment and remained similar one year after the intervention. This study provided an example of the potential use of ultrasound-based parameters to link the mechanical adaptations of the injured muscle to specific therapeutic intervention.

  9. Reliability of ultrasound texture measures of Biceps Brachialis and Gastrocnemius Lateralis muscles' images.

    Science.gov (United States)

    da Silva Pereira Júnior, Newton; da Matta, Thiago Torres; Alvarenga, André Victor; de Albuquerque Pereira, Wagner Coelho; de Oliveira, Liliam Fernandes

    2017-01-01

    Ultrasound (US) is an important tool for diagnosing of many musculoskeletal tissue conditions. Image texture analysis can be used to characterize this tissue. The complexity curve (CC) is a technique commonly used to characterize the number of grey-level transitions in an image. Variability and reliability of US texture measures in the muscle tissue are unavailable in the literature. The aim of this study was to determine the variability and reliability of five CC texture parameters from US images of healthy Biceps Brachialis and Gastrocnemius Lateralis (GL) muscles, with longitudinal and transversal orientations of the probe. Eight images per subject were obtained for 30 men in 2 days. Mean, standard deviation, coefficient of variation and intraclass correlation coefficient for the five parameters were calculated for regions of interest. Results showed that the variability was similar for both muscles and most of the parameters showed satisfactory reliability (r > 0·7) for the Biceps Brachialis with the transverse scan and for the GL with the longitudinal scan. © 2015 Scandinavian Society of Clinical Physiology and Nuclear Medicine. Published by John Wiley & Sons Ltd.

  10. Biceps tendon disorders: ultrasound, MR imaging and MR arthrography; Bizepsprobleme: Ultraschall, Magnetresonanztomographie und MR-Arthrographie

    Energy Technology Data Exchange (ETDEWEB)

    Zanetti, M.; Pfirrmann, C.W.A. [Radiologie, Uniklinik Balgrist Zuerich (Switzerland)

    2004-06-01

    Ultrasound and MR imaging are competitive imaging modalities for the diagnosis of pathologic conditions of the biceps tendon. MR imaging has substantial advantages over ultrasound because biceps tendon lesions are most commonly located in the proximal part where lesions are hidden under the acromion for ultrasound assessment. The value of MR arthrography is substantiated by the capability to assess associated diagnoses which are otherwise difficult to assess. Associated diagnoses include full- and partial thickness tears of supraspinatus and subscapularis tendons, pulley lesions, and adhesive capsulitis (frozen shoulder). Moreover, MR arthrography is the method of choice for the assessment of superior labral anterior posterior (SLAP) lesions. (orig.) [German] Der nachfolgende Uebersichtsartikel beschreibt die haeufigsten Bizepsprobleme der Schulter, wie sie in einem orthopaedisch ausgerichteten Radiologieinstitut gesehen werden. Ultraschall und MRT sind geeignet zur Evaluation von Bizepsproblemen. Der Ultraschall weist Vorteile in der dynamischen Untersuchung auf, vermag aber die proximal gelegenen Laesionen nicht zuverlaessig zu erfassen. Die MRT liefert Zusatzinformationen zu den haeufig assoziierten Begleitpathologien an der Rotatorenmanschette und an den Kapsel- und Ligamentstrukturen. Die MR-Arthrographie ist die Methode der Wahl zur Diagnose der SLAP-(superior-labral-anterior-posterior-)Laesion. (orig.)

  11. Non-Bunch–Davis initial state reconciles chaotic models with BICEP and Planck

    Directory of Open Access Journals (Sweden)

    Amjad Ashoorioon

    2014-10-01

    Full Text Available The BICEP2 experiment has announced a signal for primordial gravity waves with tensor-to-scalar ratio r=0.2−0.05+0.07 [1]. There are two ways to reconcile this result with the latest Planck experiment [2]. One is by assuming that there is a considerable tilt of r, Tr, with a positive sign, Tr=dln⁡r/dln⁡k≳0.57−0.27+0.29 corresponding to a blue tilt for the tensor modes of order nT≃0.53−0.27+0.29, assuming the Planck experiment best-fit value for tilt of scalar power spectrum nS. The other possibility is to assume that there is a negative running in the scalar spectral index, dnS/dln⁡k≃−0.02 which pushes up the upper bound on r from 0.11 up to 0.26 in the Planck analysis assuming the existence of a tensor spectrum. Simple slow-roll models fail to provide such large values for Tr or negative runnings in nS [1]. In this note we show that a non-Bunch–Davies initial state for perturbations can provide a match between large field chaotic models (like m2ϕ2 with the latest Planck result [3] and BICEP2 results by accommodating either the blue tilt of r or the negative large running of nS.

  12. SUSY see-saw and NMSO(10)GUT inflation after BICEP2

    Indian Academy of Sciences (India)

    Ila Garg

    2016-02-01

    Supersymmetric see-saw slow roll inflection point inflation occurs along a MSSM -flat direction associated with gauge invariant combination of Higgs, slepton and right-handed sneutrino at a scale set by the right-handed neutrino mass c ∼ 106−1013 GeV. The tensor to scalar perturbation ratio ∼ 10−3 can be achieved in this scenario. However, this scenario faced difficulty in being embedded in the realistic new minimal supersymmetric SO(10) grand unified theory (NMSO(10)GUT). The recent discovery of B-mode polarization by BICEP2, changes the prospects of NMSO(10)GUT inflation. Inflection point models become strongly disfavoured, as the trilinear coupling of SUSY see-saw inflation potential gets suppressed relative to the mass parameter favoured by BICEP2. Large values of ≈ 0.2 can be achieved with super-Planck scale inflaton values and mass scales of inflaton ≥1013 GeV. In NMSO(10)GUT, this can be made possible with an admixture of heavy Higgs doublet fields, i.e., other than MSSM Higgs field, which are present and have masses of order GUT scale.

  13. Assessment of the meat quality of lamb M. longissimus thoracis et lumborum and M. triceps brachii following three different Halal slaughter procedures.

    Science.gov (United States)

    Danso, A S; Richardson, R I; Khalid, R

    2017-05-01

    A total of fifteen male and fifteen female lambs were allocated to three groups of ten animals and subjected to: traditional Halal slaughter without stunning (TNS); slaughter following electric head-only stunning (EHOS) or; post-cut electric head-only stun (PCEHOS) and their meat quality was determined. Instrumental and sensory analyses were carried out on two muscles; M. longissimus thoracis et lumborum (LTL) and M. triceps brachii (TB). Additionally, the effects of sex and muscle type were also assessed. No differences were found among slaughter methods for pH, drip loss and shear force. TB had a higher pHu and was more tender than LTL. Muscles from EHOS and PCEHOS lambs discoloured more quickly than TNS muscles. There were no differences in the measured sensory attributes, with the exception of EHOS meat being tougher than PCEHOS and TNS meat. This study showed that the three slaughter methods had no substantial effect on lamb meat quality.

  14. A Experimental Study:the Contractile Properties of Triceps Brachii whiel Triceps Brachii Tendon Injured%肱三头肌肌腱损伤对其收缩性能影响的试验研究

    Institute of Scientific and Technical Information of China (English)

    陈勇; 张英泽; 王文辉

    2014-01-01

    Objective:To study the changes of the contractive property of tendon -injured skeletal muscle in animals ,and then discuss the effect of injured triceps brachii tendon on the patients with olecranon fracture .Methods:Take seven normal Japanese White rabbits as study participants and establish sciatic nerve -gastrocnemius muscle specimen in vivo .Each specimen was intervened successively in five levels:the gastrocnemius muscle tendon was kept intact ,the tendon was transversly cut off by 20% at the central section ,the tendon was transversly cut off by 40%at the central section , the tendon was transversly cut off by 60% at the central section , and the tendon was transversely cut off by 80%at the central section .In every level the maximum strength of the muscle and the mean were measured by dig -ital force gauge when the sciatic nerves were excited by impulse current of 3v and 50 Hz.Input data of the five levels and carry on statistics analysis with SAS the v9 ( two way ANOVA) .Results:Eleven specimens were successfully established and measured in all .There were significant differences for muscle strength (both the maximum and the mean) of the five levels(P<0.05).In multiple comparison, signifi-cant differences were found among these five levels (P<0.05),except that there was no significant difference in the muscle strength (both the maximum and the mean ) between the 40%group and the 60%group.In linear correlation analysis , there was a significant negative correlation (P <0.05) between the muscle strength and the cut off percentage (per cut) of the tendon.Conclusion:The skeletal muscle strength is inversely proportional to the severing percentage of its tendon in the experimental rabbits .That is, the severing percentage of the skeletal muscle tendon increased while the muscle strength significantly reduced gradually .%目的:通过动物试验研究骨骼肌肌腱损伤后其肌肉收缩性能的改变。方法:以日本大耳白兔为试验对象,制

  15. Injection of marinade with actinidin increases tenderness of porcine M. biceps femoris and affects myofibrils and connective tissue

    DEFF Research Database (Denmark)

    Christensen, M.; Torngren, M. A.; Gunvig, A.

    2009-01-01

    BACKGROUND: Marination of beef muscles with brine solutions containing proteolytic enzymes from fruit extracts has been shown to tenderize meat. However, the effect of marination with actinidin on tenderness of pork muscles has not been investigated. Tenderness and eating quality of porcine M. bi...... indicate that actinidin tenderizes pork M. biceps femoris by affecting both the myofibrils and connective tissue....

  16. Ultrasound and clinical evaluation of soft-tissue versus hardware biceps tenodesis: is hardware tenodesis worth the cost?

    Science.gov (United States)

    Elkousy, Hussein; Romero, Jose A; Edwards, T Bradley; Gartsman, Gary M; O'Connor, Daniel P

    2014-02-01

    This study assesses the failure rate of soft-tissue versus hardware fixation of biceps tenodesis by ultrasound to determine if the expense of a hardware tenodesis technique is warranted. Seventy-two patients that underwent arthroscopic biceps tenodesis over a 3-year period were evaluated using postoperative ultrasonography and clinical examination. The tenodesis technique employed was either a soft-tissue technique with sutures or an interference screw technique using hardware based on surgeon preference. Patient age was 57.9 years on average with ultrasound and clinical examination done at an average of 9.3 months postoperatively. Thirty-one patients had a hardware technique and 41 a soft-tissue technique. Overall, 67.7% of biceps tenodesis done with hardware were intact, compared with 75.6% for the soft-tissue technique by ultrasound (P = .46). Clinical evaluation indicated that 80.7% of hardware techniques and 78% of soft-tissue techniques were intact. Average material cost to the hospital for the hardware technique was $514.32, compared with $32.05 for the soft-tissue technique. Biceps tenodesis success, as determined by clinical deformity and ultrasound, was not improved using hardware as compared to soft-tissue techniques. Soft-tissue techniques are equally efficacious and more cost effective than hardware techniques.

  17. Associations of sonographic abnormalities of the shoulder with various grades of biceps peritendinous effusion (BPE).

    Science.gov (United States)

    Chang, Ke-Vin; Chen, Wen-Shiang; Wang, Tyng-Guey; Hung, Chen-Yu; Chien, Kuo-Liong

    2014-02-01

    Bicipital peritendinous effusion (BPE), a common ultrasonographic finding of the long head of the biceps tendon, may be associated with shoulder joint derangement, but supporting evidence from large-scale studies is lacking. The aim of this cross-sectional study was to determine the strength of the association between BPE and sonographic abnormalities of the shoulder joint. We reviewed the sonographic reports of patients with suspected shoulder disorders investigated ultrasonographically between January 2011 and January 2012. BPE was graded according to its measured thickness as absent (3 mm). The associations between BPE and sonographic abnormalities were examined using multinomial logistic regression adjusted for age, gender, affected side and clinical diagnosis of frozen shoulder. The prevalence rates of absent, mild, moderate and severe BPE among the 907 shoulders examined were 64.1%, 17.8%, 10.4% and 7.7%, respectively. Frozen shoulder was associated with mild BPE (relative risk [RR] vs. participants without BPE = 1.83, 95% confidence interval [CI] = 1.28-2.50). Sonographic findings of biceps tendinopathy, subdeltoid bursitis and full-thickness tears of the supraspinatus tendon were significantly associated with the entire spectrum of BPE, whereas subscapularis tendon tears were significantly associated with moderate (RR = 2.47, 95% CI = 1.29-4.69) and severe (RR = 3.11, 95% CI = 1.51-6.33) BPE. Severe BPE was associated with articular-sided partial-thickness tears of the supraspinatus tendon (RR = 14.32, 95% CI = 4.30-34.35), posterior recess effusion (RR, 7.98, 95% CI = 1.44-34.93) and biceps medial subluxation (RR = 7.25, 95% CI = 1.90-22.33). Our study indicates that BPE is related to various shoulder abnormalities and that the strengths of these associations depend on the severity of BPE. Clinicians encountering BPE should grade its severity and be alert for hidden lesions of the shoulder joint.

  18. Sextant of Sapphires for Molar Distalization

    Science.gov (United States)

    Palla, Yudistar Venkata; Ganugapanta, Vivek Reddy

    2016-01-01

    Introduction Space analysis quantifies the amount of crowding within the arches estimating the severity of space discrepancy. The space gaining procedures include extraction and non-extraction procedures like expansion, proximal stripping and molar distalization. Aim To identify features seen in molar distalization cases. Materials and Methods The sample size comprised 20 patients in whom molar distalization was decided as the treatment plan. The study models and lateral cephalograms of all the patients were taken. Occlusograms were obtained. Model analysis and cephalometric analysis were performed. Descriptive statistical analysis like mean, standard deviation, standard error and mode were done. Results The parameters in Question gave following results. The Bolton analysis showed anterior mandibular excess with mean value of 1.56mm±1.07. The first order discrepancy between maxillary central and lateral incisors was 5±1.95. The premolar rotation showed mean value of 16.58±5.12. The molar rotation showed the value of 7.66±2.26. The nasolabial angle showed the mean of 101.25±8.7 IMPA of 101.4±5.74. Conclusion The six features studied in molar distalization cases [First order discrepancy between upper central and lateral incisors; Rotation of premolars and molars; Bolton’s discrepancy in anterior dentition; Average to horizontal growth pattern; Proclined lower incisors and Obtuse nasolabial angle] can be taken as patterns seen in molar distalization cases and considered as a valid treatment plan. PMID:27656572

  19. Topographic matching of distal radius and proximal fibula articular surface for distal radius osteoarticular reconstruction.

    Science.gov (United States)

    Zhang, H; Chen, S; Wang, Z; Guo, Y; Liu, B; Tong, D

    2016-07-01

    During osteoarticular reconstruction of the distal radius with the proximal fibula, congruity between the two articular surfaces is an important factor in determining the quality of the outcome. In this study, a three-dimensional model and a coordinate transformation algorithm were developed on computed tomography scanning. Articular surface matching was performed and parameters for the optimal position were determined quantitatively. The mean radii of best-fit spheres of the articular surfaces of the distal radius and proximal fibula were compared quantitatively. The radial inclination and volar tilt following reconstruction by an ipsilateral fibula graft, rather than the contralateral, best resembles the values of the native distal radius. Additionally, the ipsilateral fibula graft reconstructed a larger proportion of the distal radius articular surface than did the contralateral. The ipsilateral proximal fibula graft provides a better match for the reconstruction of the distal radius articular surface than the contralateral, and the optimal position for graft placement is quantitatively determined.

  20. Physeal arrest of the distal radius.

    Science.gov (United States)

    Abzug, Joshua M; Little, Kevin; Kozin, Scott H

    2014-06-01

    Fractures of the distal radius are among the most common pediatric fractures. Although most of these fractures heal without complication, some result in partial or complete physeal arrest. The risk of physeal arrest can be reduced by avoiding known risk factors during fracture management, including multiple attempts at fracture reduction. Athletes may place substantial compressive and shear forces across the distal radial physes, making them prone to growth arrest. Timely recognition of physeal arrest can allow for more predictable procedures to be performed, such as distal ulnar epiphysiodesis. In cases of partial arrest, physeal bar excision with interposition grafting can be performed. Once ulnar abutment is present, more invasive procedures may be required, including ulnar shortening osteotomy or radial lengthening.

  1. CHONDROBLASTOMA IN DISTAL TIBIA - A CASE REPORT

    Directory of Open Access Journals (Sweden)

    Chinmaya

    2013-04-01

    Full Text Available INTRODUCTION: Chondroblastoma was first described as calcified gi ant cell tumour by Ewing. Codman described it as epiphyseal chondromatous giant cell tumour. Jaffe and Lichtenstein named it as chondroblastoma, a rare benign cartilag inous tumour. It represents less than 1% of all primary bone tumours and most commonly originate from the epiphyses of long bones, particularly from the epiphyses of the proximal and dis tal parts of the femur, the proximal part of the humerus, and the proximal part of the tibia. O ther reported sites are talus, scapula , patella, pelvis, distal radius, distal tibia , ribs, proximal fibula, calcaneum. Its occurrence in distal tibia is very rare with 2 documented cases in UK from 1974 to 2000, 3 documented cases in FRANCE from 1950 to 200 5 , no documented case from 1977 to 2000 in Harvard, USA. The purpose is to present a rare tumour occurring at an unusual site.

  2. DISSEMINATED REFRACTARY TUBERCULOSIS WITH BICEPS TENDON INVOLVEMENT IN AN IMMUNOCOMPETENT PATIENT

    Science.gov (United States)

    dos Reis Oliveira, Marcelo; Schiefer, Márcio; da Silva, Marcos Britto; Fontenelle, César; Júnior, Yonder Archanjo Ching-San; Franco, José Sérgio

    2015-01-01

    Objective: The authors report a rare case of disseminated tuberculosis which had compromised the long head of biceps tendon and shoulder joint, during standard drug therapy. Methods: On a first sight, the accurate diagnosis wasn't accomplished and the patient had been treated with physiotherapy for rotator cuff tear. However, the patient presented with a fast growing mass in anterior region of the proximal third of the arm, complaining of pain increase. Aspirative punction of the mass revealed a yellow fluid and the laboratorial analysis confirmed infection by M. Tuberculosis. The patient was treated with surgical debridement and his drug therapy was changed. Results: Resolution of infectious status and complete shoulder function restoration was succeeded. Conclusion: Due to its high prevalence in Brazil, tuberculosis must always be considered as a possible cause of inflammatory joint disease, even in immunocompetent patients. PMID:27004180

  3. Short-latency crossed responses in the human biceps femoris muscle

    DEFF Research Database (Denmark)

    Stevenson, Andrew James Thomas; Kamavuako, Ernest Nlandu; Geertsen, Svend Sparre;

    Ipsilateral knee (iKnee) joint rotations in seated humans elicit short-latency crossed spinal reflexes in the contralateral biceps femoris (cBF) muscle (Stevenson et al., 2012). The short-latency cBF reflexes were inhibitory following iKnee extension perturbations, and facilitatory following...... of MUs. 11 seated participants (mean age 25 ± 5 years) performed a voluntary isometric knee extension with the ipsilateral leg and contralateral knee flexion to 10% of MVC. Surface EMG was recorded bilaterally from the BF and rectus femoris, and iEMG from the cBF. A mechanical actuator (MTS......-Systems Corporation) imposed iKnee flexion or extension perturbations (8° and 150°/s) in blocks of 60 trials. iEMG data for flexion and extension perturbations were decomposed (EMGLAB, McGill et al., 2005) into constituent MU action potentials (APs). The total number of APs was quantified using a 10 ms window...

  4. Self-Calibration of BICEP1 Three-Year Data and Constraints on Astrophysical Polarization Rotation

    CERN Document Server

    Kaufman, J P; Shimon, M; Barkats, D; Bischoff, C; Buder, I; Keating, B G; Kovac, J M; Ade, P A R; Aikin, R; Battle, J O; Bierman, E M; Bock, J J; Chiang, H C; Dowell, C D; Duband, L; Filippini, J; Hivon, E F; Holzapfel, W L; Hristov, V V; Jones, W C; Kernasovskiy, S S; Kuo, C L; Leitch, E M; Mason, P V; Matsumura, T; Nguyen, H T; Ponthieu, N; Pryke, C; Richter, S; Rocha, G; Sheehy, C; Su, M; Takahashi, Y D; Tolan, J E; Yoon, K W

    2013-01-01

    Cosmic Microwave Background (CMB) polarimeters aspire to measure the faint $B$-mode signature predicted to arise from inflationary gravitational waves. They also have the potential to constrain cosmic birefringence which would produce non-zero expectation values for the CMB's $TB$ and $EB$ spectra. However, instrumental systematic effects can also cause these $TB$ and $EB$ correlations to be non-zero. In particular, an overall miscalibration of the polarization orientation of the detectors produces $TB$ and $EB$ spectra which are degenerate with isotropic cosmological birefringence, while also introducing a small but predictable bias on the $BB$ spectrum. The \\bicep three-year spectra, which use our standard calibration of detector polarization angles from a dielectric sheet, are consistent with a polarization rotation of $\\alpha = -2.77^\\circ \\pm 0.86^\\circ \\text{(statistical)} \\pm 1.3^\\circ \\text{(systematic)}$. We revise the estimate of systematic error on the polarization rotation angle from the two-year ...

  5. Antenna-coupled TES Bolometer Arrays for BICEP2/Keck and SPIDER

    CERN Document Server

    Orlando, A; Amiri, M; Bock, J J; Bonetti, J A; Brevik, J A; Burger, B; Chattopadthyay, G; Day, P K; Filippini, J P; Golwala, S R; Halpern, M; Hasselfield, M; Hilton, G C; Irwin, K D; Kenyon, M; Kovac, J M; Kuo, C L; Lange, A E; LeDuc, H G; Llombart, N; Nguyen, H T; Ogburn, R W; Reintsema, C D; Runyan, M C; Staniszewski, Z; Sudiwala, R; Teply, G; Trangsrud, A R; Turner, A D; Wilson, P

    2010-01-01

    BICEP2/Keck and SPIDER are cosmic microwave background (CMB) polarimeters targeting the B-mode polarization induced by primordial gravitational waves from inflation. They will be using planar arrays of polarization sensitive antenna-coupled TES bolometers, operating at frequencies between 90 GHz and 220 GHz. At 150 GHz each array consists of 64 polarimeters and four of these arrays are assembled together to make a focal plane, for a total of 256 dual-polarization elements (512 TES sensors). The detector arrays are integrated with a time-domain SQUID multiplexer developed at NIST and read out using the multi-channels electronics (MCE) developed at the University of British Columbia. Following our progress in improving detector parameters uniformity across the arrays and fabrication yield, our main effort has focused on improving detector arrays optical and noise performances, in order to produce science grade focal planes achieving target sensitivities. We report on changes in detector design implemented to op...

  6. Limits on Entanglement Effects in the String Landscape from Planck and BICEP/Keck Data

    CERN Document Server

    Kinney, William H

    2016-01-01

    We consider observational limits on a proposed model of the string landscape in inflation. In this scenario, effects from the decoherence of entangled quantum states in long-wavelength modes in the universe result in modifications to the Friedmann Equation and a corresponding modification to inflationary dynamics. Previous work by Holman, Mersini-Houghton, and Takahashi suggested that such effects could provide an explanation for well-known anomalies in the Cosmic Microwave Background (CMB), such as the lack of power on large scales and the "cold spot" seen by both the WMAP and Planck satellites. In this paper, we compute limits on these entanglement effects from the Planck CMB data combined with the BICEP/Keck polarization measurement, and find no evidence for observable modulations to the power spectrum from landscape entanglement, and no sourcing of observable CMB anomalies. The originally proposed model with an exponential potential is ruled out to high significance. Assuming a Starobinsky-type $R^2$ infl...

  7. On quantifying and resolving the BICEP2/Planck tension over gravitational waves

    CERN Document Server

    Smith, Kendrick M; Boyle, Latham; Turok, Neil; Halpern, Mark; Hinshaw, Gary; Gold, Ben

    2014-01-01

    The recent BICEP2 measurement of primordial gravity waves (r = 0.2^{+0.07}_{-0.05}) appears to be in tension with the upper limit from WMAP (r<0.13 at 95% CL) and Planck (r<0.11 at 95% CL). We carefully quantify the level of tension and show that it is very significant (around 0.1% unlikely) when the observed deficit of large-scale temperature power is taken into account. We show that measurements of TE and EE power spectra in the near future will discriminate between the hypotheses that this tension is either a statistical fluke, or a sign of new physics. We also discuss extensions of the standard cosmological model that relieve the tension, and some novel ways to constrain them.

  8. Resurrecting Quadratic Inflation in No-Scale Supergravity in Light of BICEP2

    CERN Document Server

    Ellis, John; Nanopoulos, Dimitri V; Olive, Keith A

    2014-01-01

    The magnitude of primordial tensor perturbations reported by the BICEP2 experiment is consistent with simple models of chaotic inflation driven by a single scalar field with a power-law potential \\propto \\phi^n: n \\simeq 2, in contrast to the WMAP and Planck results, which favored models resembling the Starobinsky R + R^2 model if running of the scalar spectral index could be neglected. While models of inflation with a quadratic potential may be constructed in simple N=1 supergravity, these constructions are more challenging in no-scale supergravity. We discuss here how quadratic inflation can be accommodated within supergravity, focussing primarily on the no-scale case. We also argue that the quadratic inflaton may be identified with the supersymmetric partner of a singlet (right-handed) neutrino, whose subsequent decay could have generated the baryon asymmetry via leptogenesis.

  9. MADURACIÓN DEL SOLOMO (Biceps femoris) EN VACAS DE DESCARTE Bos indicus Y Bos taurus

    OpenAIRE

    Roger Alonso Cubero-Rojas; Eliana Mora-Peraza; Rodolfo WingChing-Jones; Sandra Calder\\u00F3n-Villaplana

    2013-01-01

    El objetivo de este trabajo fue evaluar el efecto de la maduración sobre la terneza del músculo Biceps femoris en vacas de descarte Bos indicus y Bos taurus. En la planta procesadora de Montecillos R.L., ubicada en Alajuela, se realizó la escogencia y sacrificio de los animales, la maduración y empaque al vacío de la carne. La cocción, determinación de la terneza y evaluación sensorial se llevó a cabo a los 0, 14 y 28 días de maduración, en el Laboratorio de Análisis Sensorial del Centro de I...

  10. Fibroma of the tendon sheath of the long head of the biceps tendon.

    Science.gov (United States)

    De Maeseneer, Michel; Van Isacker, Tom; Lenchik, Leon; Van Caillie, Marie-Astrid; Shahabpour, Maryam

    2014-03-01

    Fibroma of the tendon sheath is a benign tumor that is less common than giant cell tumor of the tendon sheath. Both tumors may present as a painless, slowly enlarging mass. Radiological findings may be similar for both tumors. Histologically, fibroma of the tendon sheath lacks the hemosiderin-laden macrophages that are typical for giant cell tumor of the tendon sheath. We report on a 49-year-old woman with fibroma of the tendon sheath of the long head of the biceps tendon. In our case, on MR images, we observed band-like hypointense areas centrally in the tumor, mild patchy contrast enhancement, and most importantly, no decrease of signal intensity on gradient echo images. These characteristics reflected histological findings.

  11. Fibroma of the tendon sheath of the long head of the biceps tendon

    Energy Technology Data Exchange (ETDEWEB)

    Maeseneer, Michel de; Shahabpour, Maryam [Universitair Ziekenhuis Brussel, Department of Radiology, Brussels (Belgium); Isacker, Tom van [Sint-Lucas Hospital, Department of Orthopedic Surgery, Brugge (Belgium); Lenchik, Leon [Wake Forest School of Medicine, Department of Radiology, Winston Salem, NC (United States); Caillie, Marie-Astrid van [Sint-Lucas Hospital, Department of Pathology, Brugge (Belgium)

    2014-03-15

    Fibroma of the tendon sheath is a benign tumor that is less common than giant cell tumor of the tendon sheath. Both tumors may present as a painless, slowly enlarging mass. Radiological findings may be similar for both tumors. Histologically, fibroma of the tendon sheath lacks the hemosiderin-laden macrophages that are typical for giant cell tumor of the tendon sheath. We report on a 49-year-old woman with fibroma of the tendon sheath of the long head of the biceps tendon. In our case, on MR images, we observed band-like hypointense areas centrally in the tumor, mild patchy contrast enhancement, and most importantly, no decrease of signal intensity on gradient echo images. These characteristics reflected histological findings. (orig.)

  12. Resurrecting quadratic inflation in no-scale supergravity in light of BICEP2

    Energy Technology Data Exchange (ETDEWEB)

    Ellis, John [Theoretical Particle Physics and Cosmology Group, Department of Physics, King' s College London, London, WC2R 2LS (United Kingdom); García, Marcos A.G.; Olive, Keith A. [William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, University of Minnesota, 116 Church Street SE, Minneapolis, MN, 55455 (United States); Nanopoulos, Dimitri V., E-mail: john.ellis@cern.ch, E-mail: garciagarcia@physics.umn.edu, E-mail: dimitri@physics.tamu.edu, E-mail: olive@physics.umn.edu [George P. and Cynthia W. Mitchell Institute for Fundamental Physics and Astronomy, Texas A and M University, College Station, Texas, 77843 (United States)

    2014-05-01

    The magnitude of primordial tensor perturbations reported by the BICEP2 experiment is consistent with simple models of chaotic inflation driven by a single scalar field with a power-law potential ∝ φ{sup n} : n ≅ 2, in contrast to the WMAP and Planck results, which favored models resembling the Starobinsky R+R{sup 2} model if running of the scalar spectral index could be neglected. While models of inflation with a quadratic potential may be constructed in simple N = 1 supergravity, these constructions are more challenging in no-scale supergravity. We discuss here how quadratic inflation can be accommodated within supergravity, focusing primarily on the no-scale case. We also argue that the quadratic inflaton may be identified with the supersymmetric partner of a singlet (right-handed) neutrino, whose subsequent decay could have generated the baryon asymmetry via leptogenesis.

  13. Mechanical muscle fibre conduction velocity of the biceps as measured by a new seismic technique.

    Science.gov (United States)

    Journée, H L; de Jonge, A B; van Calker, R; Gräler, G

    1995-01-01

    A recently-developed technique, called seismic myography (SMG) has the characteristic of recording fast micro-mechanical response times. These times can be determined with sub-millisecond accuracy. The response times can be compared to response times of EMG recordings. The "muscular electro-seismic response" (MESR) latencies, due to direct electrical stimulation of the biceps muscle, are used for explorative measurements of the mechanical conduction velocity of the muscle fibres. The measurements are performed by means of a general-purpose physiological multimeter which is equiped with the micro-seismic function. Measurements are performed on two healthy subjects, aged 22 years. The MESR-latencies are measured along a medial and a lateral trajectory on their biceps muscles. The MESR-latencies at stimulus-cathodal to seismic transducer distances of 2,0-3,5 cm, are in the range of 2.0-3.8 ms, while at distances in the range of 7.5-8.9 cm the MESR-latencies varied between 3.4 and 4.7 ms. The calculated mechanical muscle fibre conduction velocities (MMFCV) are in the range between 36 and 89 m/s. There is a reproducability error of maximum 20%. The MMFCV's of the lateral and medial trajectory do not differ within the accuracy of the present method. However, the MMFCV's are considerably higher than the electrical muscle fibre conduction velocities of MUAPS ((E)MFCV). Some aspects of the MMFCV and possible consequences to surface EMG recordings are discussed. It is concluded that this seismic method for measuring MMFCV is a new accessible and simple to handle tool for the description of muscle function, and offers an interesting new contribution in experimental muscular research.

  14. Management of Malunions of the Distal Radius

    OpenAIRE

    Yaniel Truffin Rodriguez; Osmany Pérez Martínez; Rafael Esmandy Gómez Arregoitía; Indira L. Gómez Gil

    2015-01-01

    Fractures of the distal radius often present with a group of major complications. Of these, malunion is one of the most disabling. Its management through salvage procedures is essential for its correction. The case of a 60-year-old healthy woman of urban origin treated at the Dr. Gustavo Aldereguía Lima University General Hospital in Cienfuegos because of a malunion of the distal end of the left radius as a result of a previous Colles' fracture is presented. The patient complained of severe p...

  15. Contemporary Management of Primary Distal Urethral Cancer.

    Science.gov (United States)

    Traboulsi, Samer L; Witjes, Johannes Alfred; Kassouf, Wassim

    2016-11-01

    Primary urethral cancer is one of the rare urologic tumors. Distal urethral tumors are usually less advanced at diagnosis compared with proximal tumors and have a good prognosis if treated appropriately. Low-stage distal tumors can be managed successfully with a surgical approach in men or radiation therapy in women. There are no clear-cut indications for the choice of the most appropriate treatment modality. Organ-preserving modalities have shown effective and should be used whenever they do not compromise the oncological safety to decrease the physical and psychological trauma of dismemberment or loss of sexual/urinary function. Copyright © 2016 Elsevier Inc. All rights reserved.

  16. Calcifying aponeurotic fibroma of the distal phalanx.

    Science.gov (United States)

    Schonauer, Fabrizio; Avvedimento, Stefano; Molea, Guido

    2013-02-01

    Calcifying aponeurotic fibroma is a rare benign soft tissue tumor that primarily occurs on the distal portion of the extremities of children and adolescents. It appears like a firm, painless and slowly growing mass with high local recurrence rates. The lesion has characteristic histological features with areas of proliferative plumps of fibroblasts, chondrocytes and foci of calcification. We present a case of calcifying aponeurotic fibroma of the sub-ungual area of the index finger distal phalanx with bone erosion, surgically treated. A 2 year follow up showed satisfactory functional result and no evidence of recurrence.

  17. Distal splenorenal shunt with partial spleen resection

    Directory of Open Access Journals (Sweden)

    Gajin Predrag

    2007-01-01

    Full Text Available Introduction: Hypersplenism is a common complication of portal hypertension. Cytopenia in hypersplenism is predominantly caused by splenomegaly. Distal splenorenal shunt (Warren with partial spleen resection is an original surgical technique that regulates cytopenia by reduction of the enlarged spleen. Objective. The aim of our study was to present the advantages of distal splenorenal shunt (Warren with partial spleen resection comparing morbidity and mortality in a group of patients treated by distal splenorenal shunt with partial spleen resection with a group of patients treated only by a distal splenorenal shunt. Method. From 1995 to 2003, 41 patients with portal hypertension were surgically treated due to hypersplenism and oesophageal varices. The first group consisted of 20 patients (11 male, mean age 42.3 years who were treated by distal splenorenal shunt with partial spleen resection. The second group consisted of 21 patients (13 male, mean age 49.4 years that were treated by distal splenorenal shunt only. All patients underwent endoscopy and assessment of oesophageal varices. The size of the spleen was evaluated by ultrasound, CT or by scintigraphy. Angiography was performed in all patients. The platelet and white blood cell count and haemoglobin level were registered. Postoperatively, we noted blood transfusion, complications and total hospital stay. Follow-up period was 12 months, with first checkup after one month. Results In the first group, only one patient had splenomegaly postoperatively (5%, while in the second group there were 13 patients with splenomegaly (68%. Before surgery, the mean platelet count in the first group was 51.6±18.3x109/l, to 118.6±25.4x109/l postoperatively. The mean platelet count in the second group was 67.6±22.8x109/l, to 87.8±32.1x109/l postoperatively. Concerning postoperative splenomegaly, statistically significant difference was noted between the first and the second group (p<0.05. Comparing the

  18. Biomechanical properties of the biceps-labral complex submitted to mechanical stress Propriedades biomecânicas do complexo labrum-glenóide bicipital superior submetido ao estresse mecânico

    Directory of Open Access Journals (Sweden)

    Adson do Socorro Sá Costa

    2006-08-01

    Full Text Available PURPOSE: To determine biomechanical properties of the superior labrum-biceps tendon complex submitted to continuous and sudden mechanical strain. METHODS: Eighteen shoulder specimens from 15 unclaimed corpses, ages ranging from 20 to 40 years, were submitted to continuous or sudden tensile tests using 3 different traction machines. Shoulders presenting signs of degenerative diseases or preexisting traumatic lesions were excluded. RESULTS: Rupture of the distal portion of the long hand of the biceps occurred when stretching forces reached 290N in continuous traction and 384N in sudden traction. No labral-complex lesions were observed. CONCLUSION: Either a simple continuous or a sudden uniaxial traction of the arm do not play a role in the genesis of superior labrum anterior-posterior (SLAP lesions in the shoulder joint. produceOBJETIVO: Determinar as propriedades biomecânicas do complexo labrum-glenóide bicipital superior submetido ao estresse mecânico contínuo ou repetitivo (repentino. MÉTODOS: Dezoito ombros provenientes de 15 cadáveres não reclamados, idades na faixa de 20 a 40 anos, foram submetidos aos testes de tração contínua ou repentina usando três diferentes máquinas de tração. Foram excluídos do estudo os ombros que apresentavam lesões degenerativas ou evidências de lesões traumáticas pré-existentes. RESULTADOS: Ocorreu ruptura da porção distal do tendão do bíceps sob a tensão contínua de 290 N e de 348N na tração repentina. Não foram observadas lesões no complexo labrum-bicipital. CONCLUSÃO: A simples tração contínua ou súbita do braço não produz lesões do complexo Labrum Glenóide Bicipital Superior (SLAP na articulação do ombro.

  19. Hyperextension trauma to the elbow joint induced through the distal ulna or the distal radius

    DEFF Research Database (Denmark)

    Tyrdal, Stein; Olsen, Bo Sanderhoff

    1998-01-01

    Loads applied to the forearm result in hyperextension of the elbow. The pathomechanics of hyperextension trauma with load applied to the distal radius and ulna were studied in 10 macroscopically normal cadaver elbow joint specimens to reveal patterns of injury with radial traction (n = 5) compared...... trauma to the elbow joint induced through the distal ulna or the distal radius produced the same pattern of injury as reported in hyperextension of the elbow with traction to the forearm when free rotation of the radius relative to the ulna was allowed....

  20. Intramedullary nailing in distal tibial fracture

    Directory of Open Access Journals (Sweden)

    Damian Arroquy

    2015-11-01

    Methods The inclusion criteria of this study were skeletally mature patients with displaced fractures of the distal tibia treated with intramedullary nail with a minimum follow up of one year. Gustilo III open fractures and type C fractures of the AO classification (complete articular Stroke were excluded. The sample comprised 35 patients remained. The follow-up was 29.2 months. We evaluated the time of consolidation, malunion and complications. The functional results were described according to the AOFAS score. Results Of the 35 patients with fracture of the distal third of the tibia all of them presented fracture healing. The average time to union was 17.2 weeks (range: 11-26. Of the total sample, 5 patients had delayed union, requiring dynamic nail on average at 12 weeks. The malunion was present in 4 (11.4% patients. We found no  difference (p = 0.201 in the time to union between fractures associated with fractures of the fibula treated (13sem or not (17sem. The AOFAS score was 86 points. Conclusion Intramedullary nailing with multiple distal locks like a good alternative treatment for distal tibia fractures AO type A or B, with low complication rate and a high rate of consolidation.

  1. Conceptualizing distal drivers in land use competition

    DEFF Research Database (Denmark)

    Niewhöner, Jörg; Nielsen, Jonas Ø; Gasparri, Gasparri

    2016-01-01

    This introductory chapter explores the notion of ‘distal drivers’ in land use competition. Research has moved beyond proximate causes of land cover and land use change to focus on the underlying drivers of these dynamics. We discuss the framework of telecoupling within human–environment systems...

  2. Double Plating of Distal Fibula Fractures.

    Science.gov (United States)

    Vance, Danica D; Vosseller, J Turner

    2017-02-01

    Distal fibula fractures are common orthopaedic injuries that often require open reduction internal fixation (ORIF) to anatomically reduce the fracture and minimize the risk of posttraumatic arthritis. In certain clinical situations, stouter fixation may be advantageous to decrease the risk of fixation failure. In this study, the authors report on 12 patients who underwent distal fibula ORIF with 2 one-third tubular plates. Twelve consecutive patients who underwent distal fibula ORIF with 2 one-third tubular plates were retrospectively reviewed. Clinical and radiographic outcomes were reviewed, and functional outcomes were obtained using the Foot and Ankle Outcome Score (FAOS). Institutional review board approval was obtained. All 12 fractures healed clinically and radiographically. One patient was lost to follow-up after healing of the fracture. One patient had removal of fibular hardware at 15 months after surgery. Ten patients had no hardware related pain and good ankle function. FAOS scores were obtained at a mean of 25.6 months after surgery and were as follows: pain (87.6, SD = 9.5), activities of daily living (90.4, SD = 14.5), symptoms (93.3, SD = 9.5), sports (89.5, SD = 18.1), and quality of life (57.4, SD = 21.3). Double plating of distal fibula fractures is a viable technique for problem fractures that potentially provides a readily accessible, low-cost alternative to other means of enhancing fixation. Level IV.

  3. Potassium secretion in mammalian distal colon

    DEFF Research Database (Denmark)

    Sørensen, Mads Vaarby

    2009-01-01

    pre-mRNA splicing and that at least one splice variant could be activated with cAMP. Using molecular biological techniques two different BK subunit splice variants both expressed in the distal colonic epithelial were identified. By the use of two different knock-out mice models, the BK-/- and the CFTR...

  4. Three dimensional finite element analysis of anatomic distal radius Nitinol memory connector treating distal radius fracture

    Institute of Scientific and Technical Information of China (English)

    苏佳灿; 张春才; 禹宝庆; 许硕贵; 王家林; 纪方; 张雪松; 吴建国; 王保华; 薛召军; 丁祖泉

    2003-01-01

    Objective: To study the memory biomechanical character of anatomic distal radius Nitinol memory connector (DRMC) in treating distal radius fracture. Methods: Establishing three dimensional model and finite element analysis, we calculated the stress in and around the fracture faces when distal radius fracture was fixated with DRMC. Results: Axial holding stress produced by holding part of DRMC on distal radius was 14.66 MPa. The maximum stress of holding part was 40-70 MPa, the minimum stress was 3-7 MPa,and the stress of compression part was 20-40 MPa. Conclusion: The distribution of stress produced by DRMC around the fracture line is reasonable, and axial holding stress can help stabilize fracture during earlier period. The existence of longitudal compression and memory effect can transfer fixated disused section into developed section and enhance fracture healing.

  5. BICEP2 / Keck Array V: Measurements of B-mode Polarization at Degree Angular Scales and 150 GHz by the Keck Array

    CERN Document Server

    Ade, P A R; Aikin, R W; Alexander, K D; Barkats, D; Benton, S J; Bischoff, C A; Bock, J J; Brevik, J A; Buder, I; Bullock, E; Buza, V; Connors, J; Crill, B P; Dowell, C D; Dvorkin, C; Duband, L; Filippini, J P; Fliescher, S; Golwala, S R; Halpern, M; Hasselfield, M; Hildebrandt, S R; Hilton, G C; Hristov, V V; Hui, H; Irwin, K D; Karkare, K S; Kaufman, J P; Keating, B G; Kefeli, S; Kernasovskiy, S A; Kovac, J M; Kuo, C L; Leitch, E M; Lueker, M; Mason, P; Megerian, K G; Netterfield, C B; Nguyen, H T; O'Brient, R; Ogburn, R W; Orlando, A; Pryke, C; Reintsema, C D; Richter, S; Schwarz, R; Sheehy, C D; Staniszewski, Z K; Sudiwala, R V; Teply, G P; Thompson, K L; Tolan, J E; Turner, A D; Vieregg, A G; Weber, A C; Willmert, J; Wong, C L; Yoon, K W

    2015-01-01

    The Keck Array is a system of cosmic microwave background (CMB) polarimeters, each similar to the BICEP2 experiment. In this paper we report results from the 2012 and 2013 observing seasons, during which the Keck Array consisted of five receivers all operating in the same (150 GHz) frequency band and observing field as BICEP2. We again find an excess of B-mode power over the lensed-$\\Lambda$CDM expectation of $> 5 \\sigma$ in the range $30 6\\sigma$.

  6. The relationship between shear force, compression, collagen characteristics, desmin degradation and sarcomere length in lamb biceps femoris.

    Science.gov (United States)

    Starkey, Colin P; Geesink, Geert H; van de Ven, Remy; Hopkins, David L

    2017-04-01

    This study aimed to identity the relationships between known variants of tenderness (collagen content (total and soluble), desmin degradation and sarcomere length) and shear force and compression in the biceps femoris aged for 14days from 112 mixed sex lambs. Desmin degradation was related to compression (P<0.05) such that as desmin degradation increased compression decreased. Sarcomere length (SL) was related to shear force (P<0.05), such that as SL increased shear force declined. Shear force was also related to compression (P<0.05), and soluble collagen (P<0.05), with male lambs producing higher shear force values than females (4.4±1.72N: P<0.05) when adjusted for compression, sarcomere length and soluble collagen. The findings from this experiment indicate that the known variants (soluble collagen, sarcomere length and desmin degradation) are related to shear force and compression in ovine biceps femoris.

  7. INDICATIONS FOR DISTAL RADIOULNAR ARTHROPLASTY: REPORT ON THREE CLINICAL CASES

    Science.gov (United States)

    Santos, Cláudia; Pereira, Alexandre; Sousa, Marco; Trigeuiros, Miguel; Silva, César

    2015-01-01

    Distal radioulnar arthroplasty is an attractive solution for treating various pathological conditions of the distal radioulnar joint because it allows restoration of stability, load transmission and function. The main indications are: radioulnar impingement after partial or complete resection of the distal ulna; and degenerative, inflammatory or post-traumatic arthritis of the distal radioulnar joint. The authors present three clinical cases of distal radioulnar pathological conditions: two patients with post-traumatic sequelae and one case of distal radioulnar impingement after a Sauvé-Kapandji operation. The three cases were treated surgically with a metallic prosthesis to replace the distal ulna (First Choice - Ascension®). The first two were treated with a resurfacing prosthesis and the last one with a modular prosthesis. All of the patients had achieved pain relief and increased movement of the distal radioulnar joint after one year of postoperative follow-up. PMID:27047827

  8. Does computer use affect the incidence of distal arm pain?

    DEFF Research Database (Denmark)

    Mikkelsen, Sigurd; Lassen, Christina Funch; Vilstrup, Imogen;

    2012-01-01

    To study how objectively recorded mouse and keyboard activity affects distal arm pain among computer workers.......To study how objectively recorded mouse and keyboard activity affects distal arm pain among computer workers....

  9. Relationship between chronic pathologies of the supraspinatus tendon and the long head of the biceps tendon: systematic review

    OpenAIRE

    Redondo-Alonso, Lucía; Chamorro-Moriana, Gema; Jiménez-Rejano, José Jesús; López-Tarrida, Patricio; Ridao-Fernández, Carmen

    2014-01-01

    Background Chronic supraspinatus tendinopathy is a common clinical problem that causes functional and labor disabilities in the population. It is the most frequent cause of shoulder pain. This pathology may be frequently associated to the affectation of the long head of biceps tendon (LHBT), the main stabilizer of the glenohumeral joint together with the supraspinatus. The main aim of this work is to study the prevalence of lesions in LHBT associated to the chronic pathology of the supraspina...

  10. Distal displacement of the maxilla and the upper first molar.

    Science.gov (United States)

    Baumrind, S; Molthen, R; West, E E; Miller, D M

    1979-06-01

    Data from a sample of 198 Class II cases treated with various appliances which deliver distally directed forces to the maxilla were examined to determine the frequency of absolute distal displacement of the upper first molar and of the maxilla. Analysis revealed that such distal displacement is possible and that it is, in fact, a frequent finding following treatment. Long-range stability of distal displacement was not assessed.

  11. [Fracture endoprosthesis of distal humerus fractures].

    Science.gov (United States)

    Müller, L P; Wegmann, K; Burkhart, K J

    2013-08-01

    The treatment of choice for fractures of the distal humerus is double plate osteosynthesis. Due to anatomical preshaped angle stable plates the primary stability and management of soft tissues has been improved. However, osteoporotic comminuted fractures in the elderly are often not amenable to stable osteosynthesis and total elbow arthroplasty has been established as an alternative therapy. Although complication rates have been reduced, complications of total elbow arthroplasty are still much more frequent than in total hip replacement. Furthermore, patients are advised not to exceed a weight bearing of 5 kg. Therefore, the indications for elbow arthroplasty must be evaluated very strictly and should be reserved for comminuted distal humeral fractures in the elderly with poor bone quality that are not amenable to stable osteosynthesis or for simple fractures in cases of preexisting symptomatic osteoarthritis. This article introduces and discusses modern concepts of elbow arthroplasty, such as modular convertible prosthesis systems, hemiarthroplasty and radial head replacement in total elbow arthroplasty.

  12. [Progressive external ophthalmoplegia and distal myopathy].

    Science.gov (United States)

    Damian, C

    1993-01-01

    A patient, 58 years old, presents progressive blepharoptosis, in both eyes and external ophthalmoplegia. The general somatic examination, shows, at the level of the higher limbs, distal myopathy with muscular hypotony and articular deformities fibrosis and tendinous retraction. On examining the eye bottom we found colloid degeneration in the muscle region. Within the same family a ten-year-old nephew presents congenital ptosis. The muscular biopsy from the levator palpebrae shows muscular degenerative lesions with the reduction of nuclei and the proliferation of conjunctive tissue. It is shown that progressive external ophthalmoplegia must be interpreted as an ocular myopathy. The association with the distal myopathy at the level of the higher limbs, in the presented observation, upholds this pathogeny.

  13. Overcoming species boundaries in peptide identification with Bayesian information criterion-driven error-tolerant peptide search (BICEPS).

    Science.gov (United States)

    Renard, Bernhard Y; Xu, Buote; Kirchner, Marc; Zickmann, Franziska; Winter, Dominic; Korten, Simone; Brattig, Norbert W; Tzur, Amit; Hamprecht, Fred A; Steen, Hanno

    2012-07-01

    Currently, the reliable identification of peptides and proteins is only feasible when thoroughly annotated sequence databases are available. Although sequencing capacities continue to grow, many organisms remain without reliable, fully annotated reference genomes required for proteomic analyses. Standard database search algorithms fail to identify peptides that are not exactly contained in a protein database. De novo searches are generally hindered by their restricted reliability, and current error-tolerant search strategies are limited by global, heuristic tradeoffs between database and spectral information. We propose a Bayesian information criterion-driven error-tolerant peptide search (BICEPS) and offer an open source implementation based on this statistical criterion to automatically balance the information of each single spectrum and the database, while limiting the run time. We show that BICEPS performs as well as current database search algorithms when such algorithms are applied to sequenced organisms, whereas BICEPS only uses a remotely related organism database. For instance, we use a chicken instead of a human database corresponding to an evolutionary distance of more than 300 million years (International Chicken Genome Sequencing Consortium (2004) Sequence and comparative analysis of the chicken genome provide unique perspectives on vertebrate evolution. Nature 432, 695-716). We demonstrate the successful application to cross-species proteomics with a 33% increase in the number of identified proteins for a filarial nematode sample of Litomosoides sigmodontis.

  14. Distal renal tubular acidosis with hereditary spherocytosis.

    Science.gov (United States)

    Sinha, Rajiv; Agarwal, Indira; Bawazir, Waleed M; Bruce, Lesley J

    2013-07-01

    Hereditary spherocytosis (HS) and distal renal tubular acidosis (dRTA), although distinct entities, share the same protein i.e. the anion exchanger1 (AE1) protein. Despite this, their coexistence has been rarely reported. We hereby describe the largest family to date with co-existence of dRTA and HS and discuss the molecular basis for the co-inheritance of these conditions.

  15. [Laparoscopic distal resection of the pancreas].

    Science.gov (United States)

    Gürlich, R; Sixta, B; Oliverius, M; Kment, M; Rusina, R; Spicák, J; Sváb, J

    2005-09-01

    During the last two years, reports on laparoscopic procedures of the pancreas have been on increase. Laparoscopic resection of the pancreatic cauda is indicated, primarily, for benign cystic lesions of the cauda of the pancreas and for neuroendocrine tumors of the pancreas (mainly insulinomas). We have not recorded any report on the above procedure in the Czech literature. Therefore, in our case review, we have described laparoscopic distal resection of the pancreas with splenectomy for a pseudopapillary tumor of the pancreas.

  16. Periosteal osteoid osteoma of the distal femur

    Directory of Open Access Journals (Sweden)

    Mohammed Fahd Amar

    2010-07-01

    Full Text Available Periosteal osteoid osteoma is extremely rare. The diagnosis is not always clear. We report a case of periosteal osteoid osteoma arising from the posterior surface of the right distal femur in a 21-year-old woman. After careful evaluation and excisional biopsy, histological examination confirmed the diagnosis of osteoid osteoma, showing the nidus, surrounding osteosclerosis, and catarrhal synovitis. The lesion was treated successfully with excision of the nidus.

  17. Distal Adding On in Lenke 1A Scoliosis

    DEFF Research Database (Denmark)

    Wang, Yu; Bünger, Cody Eric; Zhang, Yanqun;

    2013-01-01

    to determine the onset of distal adding-on in Lenke 1A scoliosis. Such questions as: "Which radiographical parameters should be used for measuring the extent of distal adding-on?" and "What criteria should be applied in determining the onset of distal adding-on?" need to be answered. METHODS: We reviewed all...

  18. Distal symmetrical polyneuropathy: definition for clinical research.

    Science.gov (United States)

    England, J D; Gronseth, G S; Franklin, G; Miller, R G; Asbury, A K; Carter, G T; Cohen, J A; Fisher, M A; Howard, J F; Kinsella, L J; Latov, N; Lewis, R A; Low, P A; Sumner, A J

    2005-01-01

    The objective of this report was to develop a case definition of "distal symmetrical polyneuropathy" to standardize and facilitate clinical research and epidemiological studies. A formalized consensus process was employed to reach agreement after a systematic review and classification of evidence from the literature. The literature indicates that symptoms alone have relatively poor diagnostic accuracy in predicting the presence of polyneuropathy; signs are better predictors of polyneuropathy than symptoms; and single abnormalities on examination are less sensitive than multiple abnormalities in predicting the presence of polyneuropathy. The combination of neuropathic symptoms, signs, and electrodiagnostic findings provides the most accurate diagnosis of distal symmetrical polyneuropathy. A set of case definitions was rank ordered by likelihood of disease. The highest likelihood of polyneuropathy (useful for clinical trials) occurs with a combination of multiple symptoms, multiple signs, and abnormal electrodiagnostic studies. A modest likelihood of polyneuropathy (useful for field or epidemiological studies) occurs with a combination of multiple symptoms and multiple signs when the results of electrodiagnostic studies are not available. A lower likelihood of polyneuropathy occurs when electrodiagnostic studies and signs are discordant. For research purposes, the best approach for defining distal symmetrical polyneuropathy is a set of case definitions rank ordered by estimated likelihood of disease. The inclusion of this formalized case definition in clinical and epidemiological research studies will ensure greater consistency of case selection.

  19. Novel topical therapies for distal colitis

    Institute of Scientific and Technical Information of China (English)

    Ian; Craig; Lawrance

    2010-01-01

    Distal colitis(DC) can be effectively treated with topical 5ASA agents.Suppositories target the rectum while enemas can reliably reach the splenic flexure.Used in combination with oral 5ASAs,the control of the inflammation is even more effective.Unfortunately,resistant DC does occur and can be extremely challenging to manage.In these patients,the use of steroids,immunosuppressants and the anti-tumor necrosis factor α agents are often required.These,however,can be associated with systemic side effects and are not always effective.The investigation of new topical therapeutic agents is thus required as they are rarely associated with significant blood drug levels and side effects are infrequent.Some of the agents that have been proposed for use in resistant distal colitis include butyrate,cyclosporine and nicotine enemas as well as tacrolimus suppositories and tacrolimus,ecabet sodium,arsenic,lidocaine,rebamipide and Ridogrel enemas.Some of these agents have demonstrated impressive results but the majority of the agents have only been assessed in small open-labelled patient cohorts.Further work is thus required with the investigation of promising agents in the context of randomized double-blinded placebo controlled trials.This review aims to highlight those potentially effective therapies in the management of resistant distal colitis and to promote interest in furthering their investigation.

  20. Miastenia grave distal: relato de caso

    Directory of Open Access Journals (Sweden)

    Scola Rosana Herminia

    2003-01-01

    Full Text Available Relatamos o caso de uma mulher de 30 anos com quadro de fraqueza muscular nos membros inferiores com predomínio distal com início há 7 anos. Na evolução apresentou fraqueza muscular nos membros superiores. O exame físico mostrava nervos cranianos sem alterações, hipotrofia bilateral de quadriceps e interósseos dos pés, redução da força muscular mais intensa em tibiais anteriores e interósseos dorsais dos pés e reflexos tendinosos globalmente hipoativos. Foi realizado teste de estimulação repetitiva que mostrou decremento maior que 10% no nervo fibular e ulnar. A dosagem de anticorpos anti-receptor de acetilcolina foi positiva. Tomografia computadorizada de tórax foi normal. Dosagem de hormônios tireoidianos mostrou evidências laboratoriais de hipertireoidismo, porém sem manifestações clínicas. Foi iniciado tratamento com piridostigmina havendo melhora importante do quadro clínico. A fraqueza distal é um sintoma inicial raro na miastenia grave (MG. Contudo, a MG deve entrar no diagnóstico diferencial de doenças que cursam com fraqueza muscular distal de membros superiores ou inferiores.

  1. Distal tendinosis of the tibialis anterior tendon.

    Science.gov (United States)

    Beischer, Andrew D; Beamond, Ben M; Jowett, Andrew J L; O'Sullivan, Richard

    2009-11-01

    Disorders of the tibialis anterior (TA) tendon have infrequently been reported but spontaneous rupture of this tendon is well recognized. The clinical presentation of tendinosis without rupture of the distal TA has not previously been reported and is the basis of this paper. A study of 29 patients diagnosed with distal TA tendinosis was undertaken. Data collected included, patient demographics, weight, height, pain profile and examination findings. All patients underwent MRI of the symptomatic foot. Operative findings of those patients undergoing surgery for this condition were collected. Twenty-nine patients (32 feet) were included in the study group. Their mean age was 62 years and 27 patients were female. Twenty-one patients were overweight. The usual presenting symptom was burning medial midfoot pain that was often reported to be worst at night. Swelling over the TA tendon was frequently observed. On MRI the TA was thickened in all patients. Longitudinal split tears were observed in 19 feet. Chondral thinning and/or osteophyte formation at the first tarsometatarsal or medial naviculocuneiform joints was observed in 11 feet. Eleven feet underwent surgery. Universally the TA tendon was macroscopically thickened and had lost its normal fibrillary appearance. Longitudinal split tears were observed in eight tendons. Pathology was typical of a degenerative tendinosis. Distal TA tendinosis is a condition that seems to predominantly affect overweight elderly women. It often presents with nocturnal burning medial midfoot pain.

  2. DISTAL TRICEPS AVULSION: A CASE REPORT

    Directory of Open Access Journals (Sweden)

    Ramkumar Reddy

    2015-05-01

    Full Text Available Triceps rupture is an uncommon injury. Fracture of olecranon or a dislocation / fracture is most often common injury for similar mechanism of fall. It is commonly associated with anabolic steroid use, weight lifting, and direct laceration. Risk factors include local steroid injection, olecranon bursitis, and hyperparathyroidism. Distal triceps rupture is usually caused by a fall on an outstretched hand. Eccentric loading of a contracting triceps has been implicated. Initial diagnosis may be difficult because a palpable defect is not always present. Pain and swelling may limit the ability to evaluate strength and elbow range of motion. Although plain radiographs are helpful in ruling out other elbow pathology, MRI is used to confirm the diagnosis, classify the injury, and plan management. Incomplete tears with active elbow extension against resistance are managed non - surgically. Surgical repair is indicated in active persons with complete tears and for incomplete tears with concomitant loss of strength. Good to excellent results have been reported with surgical repair in triceps, even for chronic tears. BACKGROUND: Distal triceps tendon avulsions occur very infrequently, and the diagnosis is often missed when the injury is acute. The literature provides little guidance regarding treatment or the outcome of these injuries. The goal of this report was to report our experience with the diagnosis, timing and technique of surgical treatment, and outcome of treatment of distal triceps tendon rupture.

  3. Management and treatment of distal ulcerative colitis

    Directory of Open Access Journals (Sweden)

    Andrea Calafiore

    2013-12-01

    Full Text Available Ulcerative colitis (UC is a chronic inflammatory condition that is confined to the colonic mucosa. Its main symptoms include diarrhea, rectal bleeding and abdominal pain. Approximately two-thirds of UC patients have disease confined distal to the splenic flexure, which can be treated effectively with topical therapy. This means the active drug can be delivered directly to the site of inflammation, limiting the systemic absorption and potential side effects. Topical treatment with aminosalicylates is the most effective approach in the treatment of these forms, provided that the formulation reaches the upper margin of the disease. Given this, the suppository formulation is the treatment of choice for proctitis and distal sigmoiditis. Thanks to their proximal spread, enemas, foams and gels represent the treatment of choice for proctosigmoiditis and for distal ulcerative colitis. Oral aminosalicylates are less effective than topical therapies in patients with active disease, while the combination of topical and oral treatment is more effective in patients refractory to topical or oral mono-therapy. Topically administered aminosalicylates play an important role in the maintenance of remission, but the long-term adhesion to therapy is poor. For this reason, the oral formulation is the first-line therapy in the maintenance of remission. Refractory patients can be treated with topical steroids or systemic steroids and TNF-alpha inhibitors in severe forms.

  4. Domain wall signatures in BICEP2, Planck, VLT/UVES and Keck/HIRES data?

    CERN Document Server

    Avelino, P P

    2014-01-01

    We consider the possibility that current hints for a spatial variation of the fine structure constant at high redshift could be due to a domain wall network described by a scalar field non-minimally coupled to the electromagnetic field. We show that in order to be cause of the reported spatial variation of the fine structure constant, without being in conflict with the observed anisotropies of the cosmic microwave background, the characteristic scale of the network would have to be of the order of the Hubble radius and the fractional contribution of the domain wall network to the energy density of the Universe would need to be in the range $10^{-10} < \\Omega_{w0} < 10^{-5}$. We argue that for sufficiently large values of $\\Omega_{w0}$ in this range, domain walls could even be responsible for the large scale anomalies in the temperature distribution of the cosmic microwave background detected by Planck and WMAP and for the B-mode polarisation signature detected by BICEP2. Since the domain wall contributi...

  5. Antenna-coupled TES bolometers used in BICEP2, Keck array, and SPIDER

    CERN Document Server

    Ade, P A R; Amiri, M; Barkats, D; Benton, S J; Bischoff, C A; Bock, J J; Bonetti, J A; Brevik, J A; Buder, I; Bullock, E; Chattopadhyay, G; Davis, G; Day, P K; Dowell, C D; Duband, L; Filippini, J P; Fliescher, S; Golwala, S R; Halpern, M; Hasselfield, M; Hildebrandt, S R; Hilton, G C; Hristov, V; Hui, H; Irwin, K D; Jones, W C; Karkare, K S; Kaufman, J P; Keating, B G; Kefeli, S; Kernasovskiy, S A; Kovac, J M; Kuo, C L; Leduc, H G; Leitch, E M; Llombart, N; Lueker, M; Mason, P; Megerian, K; Moncelsi, L; Netterfield, C B; Nguyen, H T; O'Brient, R; Ogburn, R W; Orlando, A; Pryke, C; Rahlin, A S; Reintsema, C D; Richter, S; Runyan, M C; Schwarz, R; Sheehy, C D; Staniszewski, Z K; Sudiwala, R V; Teply, G P; Tolan, J E; Trangsrud, A; Tucker, R S; Turner, A D; Vieregg, A G; Weber, A; Wiebe, D V; Wilson, P; Wong, C L; Yoon, K W; Zmuidzinas, J

    2015-01-01

    We have developed antenna-coupled transition-edge sensor (TES) bolometers for a wide range of cosmic microwave background (CMB) polarimetry experiments, including BICEP2, Keck Array, and the balloon borne SPIDER. These detectors have reached maturity and this paper reports on their design principles, overall performance, and key challenges associated with design and production. Our detector arrays repeatedly produce spectral bands with 20%-30% bandwidth at 95, 150, or 220~GHz. The integrated antenna arrays synthesize symmetric co-aligned beams with controlled side-lobe levels. Cross-polarized response on boresight is typically ~0.5%, consistent with cross-talk in our multiplexed readout system. End-to-end optical efficiencies in our cameras are routinely 35% or higher, with per detector sensitivities of NET~300 uKrts. Thanks to the scalability of this design, we have deployed 2560 detectors as 1280 matched pairs in Keck Array with a combined instantaneous sensitivity of ~9 uKrts, as measured directly from CMB...

  6. Tensor interpretation of BICEP2 results severely constrains axion dark matter.

    Science.gov (United States)

    Marsh, David J E; Grin, Daniel; Hlozek, Renée; Ferreira, Pedro G

    2014-07-04

    The recent detection of B modes by the BICEP2 experiment has nontrivial implications for axion dark matter implied by combining the tensor interpretation with isocurvature constraints from Planck observations. In this Letter the measurement is taken as fact, and its implications considered, though further experimental verification is required. In the simplest inflation models, r=0.2 implies HI=1.1×10(14)  GeV. If the axion decay constant faaxion as DM for ma≲52χ6/7  μeV (where χ>1 accounts for theoretical uncertainty). If fa>HI/2π then vacuum fluctuations of the axion field place conflicting demands on axion DM: isocurvature constraints require a DM abundance which is too small to be reached when the backreaction of fluctuations is included. High-fa QCD axions are thus ruled out. Constraints on axionlike particles, as a function of their mass and DM fraction, are also considered. For heavy axions with ma≳10(-22)  eV we find Ωa/Ωd≲10(-3), with stronger constraints on heavier axions. Lighter axions, however, are allowed and (inflationary) model-independent constraints from the CMB temperature power spectrum and large scale structure are stronger than those implied by tensor modes.

  7. Higgs vacuum stability and inflationary dynamics after BICEP2 and PLANCK dust polarisation data

    Energy Technology Data Exchange (ETDEWEB)

    Bhattacharya, Kaushik; Chakrabortty, Joydeep; Das, Suratna [Department of Physics, Indian Institute of Technology, Kanpur-208016 (India); Mondal, Tanmoy, E-mail: kaushikb@iitk.ac.in, E-mail: joydeep@iitk.ac.in, E-mail: suratna@iitk.ac.in, E-mail: tanmoym@prl.res.in [Theoretical Physics Division, Physical Research Laboratory, Ahmedabad-380009 (India)

    2014-12-01

    If the recent detection of B-mode polarization of the Cosmic Microwave Background by BICEP2 observations, withstand the test of time after the release of recent PLANCK dust polarisation data, then it would surprisingly put the inflationary scale near Grand Unification scale if one considers single-field inflationary models. On the other hand, Large Hadron Collider has observed the elusive Higgs particle whose presently observed mass can lead to electroweak vacuum instability at high scale (∼ O(10{sup 10}) GeV). In this article, we seek for a simple particle physics model which can simultaneously keep the vacuum of the theory stable and yield high-scale inflation successfully. To serve our purpose, we extend the Standard Model of particle physics with a U(1){sub B-L} gauged symmetry which spontaneously breaks down just above the inflationary scale. Such a scenario provides a constrained parameter space where both the issues of vacuum stability and high-scale inflation can be successfully accommodated. The threshold effect on the Higgs quartic coupling due to the presence of the heavy inflaton field plays an important role in keeping the electroweak vacuum stable. Furthermore, this scenario is also capable of reheating the universe at the end of inflation. Though the issues of Dark Matter and Dark Energy, which dominate the late-time evolution of our universe, cannot be addressed within this framework, this model successfully describes the early universe dynamics according to the Big Bang model.

  8. Induced-Gravity Inflation in Supergravity Confronted with Planck 2015 & BICEP2/Keck Array

    CERN Document Server

    Pallis, C

    2015-01-01

    Supersymmetric versions of induced-gravity inflation are formulated within Supergravity (SUGRA) employing two gauge singlet chiral superfields. The proposed superpotential is uniquely determined by applying a continuous R and a discrete Z_2 symmetry. We also employ a logarithmic Kahler potential respecting the symmetries above and including all the allowed terms up to fourth order in powers of the various fields. When the Kahler manifold exhibits a no-scale-type symmetry, the model predicts spectral index ns=0.963 and tensor-to-scalar r=0.004. Beyond no-scale SUGRA, ns and r depend crucially on the coefficient ksphi involved in the fourth order term, which mixes the inflaton \\Phi\\ with the accompanying non-inflaton superfield S in the Kahler potential, and the prefactor encountered in it. Increasing slightly the latter above (-3), an efficient enhancement of the resulting r can be achieved putting it in the observable range favored by the Planck and BICEP2/Keck Array results. In all cases, imposing a lower bo...

  9. Reconciling Induced-Gravity Inflation in Supergravity With The BICEP2 Results

    CERN Document Server

    Pallis, C

    2014-01-01

    We generalize the embedding of induced-gravity inflation beyond the no-scale Supergravity presented in arXiv:1403.5486 employing two gauge singlet chiral superfields, a superpotential uniquely determined by applying a continuous R and a discrete Zn symmetries, and a logarithmic Kahler potential including all the allowed terms up to fourth order in powers of the various fields. We show that, increasing slightly the prefactor (-3) encountered in the adopted Kahler potential, an efficient enhancement of the resulting tensor-to-scalar ratio can be achieved rendering the predictions of the model consistent with the recent BICEP2 results, even with subplanckian excursions of the original inflaton field. The remaining inflationary observables can become compatible with the data by mildly tuning the coefficient involved in the fourth order term of the Kahler potential which mixes the inflaton with the accompanying non-inflaton field. The inflaton mass is predicted to be close to 10^14 GeV.

  10. An innovative technique to distalize maxillary molar using microimplant supported rapid molar distalizer

    Directory of Open Access Journals (Sweden)

    Meenu Goel

    2013-01-01

    Full Text Available Introduction: In recent years, enhancements in implants have made their use possible as a mode of absolute anchorage in orthodontic patients. In this paper, the authors have introduced an innovative technique to unilaterally distalize the upper left 1 st molar to obtain an ideal Class I molar relationship from a Class II existing molar relationship with an indigenous designed distalizer. Clinical Innovation: For effective unilateral diatalization of molar, a novel cantilever sliding jig assembly was utilized with coil spring supported by a buccally placed single micro implant. The results showed 3 mm of bodily distalization with 1 mm of intrusion and 2° of distal tipping of upper left 1 st molar in 1.5 months. Discussion: This appliance is relatively easy to insert, well-tolerated, and requires minimal patient cooperation compared to other present techniques of molar distalization. Moreover, it is particularly useful in cases that are Class II on one side and Class I on the other, with a minor midline discrepancy and nominal overjet. Patient acceptance level was reported to be within patients physiological and comfort limits.

  11. Distal renal tubular acidosis in recurrent renal stone formers

    DEFF Research Database (Denmark)

    Osther, P J; Hansen, A B; Røhl, H F

    1989-01-01

    (1.1%) had complete distal renal tubular acidosis and 14 (15.5%) incomplete distal renal tubular acidosis. Our results confirm that distal renal tubular acidification defects are associated with a more severe form of stone disease and make distal renal tubular acidosis one of the most frequent...... metabolic disturbances in renal stone formers. Distal renal tubular acidosis (dRTA) was relatively more common in female stone formers and most often found in patients with bilateral stone disease (36%). Since prophylactic treatment in renal stone formers with renal acidification defects is available...

  12. Distal Femoral Locking Compression Plate Fixation in Distal Femoral Fractures: Early Results

    Directory of Open Access Journals (Sweden)

    EJ Yeap

    2007-05-01

    Full Text Available We conducted a retrospective review on eleven patients who were treated for Type A and C distal femoral fractures (based on AO classification between January 2004 and December 2004. All fractures were fixed with titanium distal femoral locking compression plate. The patient’s ages ranged from 15 to 85 with a mean of 44. Clinical assessment was conducted at least 6 months post-operatively using the Schatzker scoring system. Results showed that four patients had excellent results, four good, two fair and one failure.

  13. Anaesthetic management in thoracoscopic distal tracheal resection.

    Science.gov (United States)

    Acosta Martínez, J; Beato López, J; Domínguez Blanco, A; López Romero, J L; López Villalobos, J L

    2017-03-01

    Surgical resection of tracheal tumours, especially distal tracheal tumours, is a challenge for the anaesthesiologists involved, mainly due to difficulties in ensuring adequate control of the airway and ventilation. We report the case of a patient undergoing tracheal resection and anastomosis by VATS, emphasizing the anaesthetic management. Copyright © 2016 Sociedad Española de Anestesiología, Reanimación y Terapéutica del Dolor. Publicado por Elsevier España, S.L.U. All rights reserved.

  14. Salter Harris Fractures of the Distal Femur

    Science.gov (United States)

    Hamilton, Steven W.; Barker, Simon L.

    2013-01-01

    Salter Harris–type injuries of the distal femur should be treated as a dislocation of the knee and therefore as a medical emergency. Senior medical staff should be involved early, ankle–brachial index ratio should be measured in all patients and the clinician should have a high index of suspicion for a vascular injury. Ideally reduction, stabilization, and vascular repair, if necessary, should be carried out within 6 hours of the initial event. There should be a low threshold for fasciotomies. These 2 cases demonstrate the importance of having a high index of suspicion for vascular injury and the need for continued reassessment. PMID:26425580

  15. Salter Harris Fractures of the Distal Femur

    Directory of Open Access Journals (Sweden)

    Sean M. McKenna

    2013-07-01

    Full Text Available Salter Harris–type injuries of the distal femur should be treated as a dislocation of the knee and therefore as a medical emergency. Senior medical staff should be involved early, ankle–brachial index ratio should be measured in all patients and the clinician should have a high index of suspicion for a vascular injury. Ideally reduction, stabilization, and vascular repair, if necessary, should be carried out within 6 hours of the initial event. There should be a low threshold for fasciotomies. These 2 cases demonstrate the importance of having a high index of suspicion for vascular injury and the need for continued reassessment.

  16. Distal Renal Tubular Acidosis and Calcium Nephrolithiasis

    Science.gov (United States)

    Moe, Orson W.; Fuster, Daniel G.; Xie, Xiao-Song

    2008-09-01

    Calcium stones are commonly encountered in patients with congenital distal renal tubular acidosis, a disease of renal acidification caused by mutations in either the vacuolar H+-ATPase (B1 or a4 subunit), anion exchanger-1, or carbonic anhydrase II. Based on the existing database, we present two hypotheses. First, heterozygotes with mutations in B1 subunit of H+-ATPase are not normal but may harbor biochemical abnormalities such as renal acidification defects, hypercalciuria, and hypocitraturia which can predispose them to kidney stone formation. Second, we propose at least two mechanisms by which mutant B1 subunit can impair H+-ATPase: defective pump assembly and defective pump activity.

  17. Distal extremity necrosis in captive birds.

    Science.gov (United States)

    Calle, P P; Montali, R J; Janssen, D L; Stoskopf, M K; Strandberg, J D

    1982-10-01

    The necropsy files of the National Zoological Park and Baltimore Zoological Society were reviewed for cases of distal extremity necrosis (DEN) in birds. Nineteen cases of DEN occurred following either trauma or frostbite. Six birds developed an apparently primary type of DEN in which no predisposing factors were obvious clinically. The toes and feet were most commonly involved, and in several cases the beak was also affected. Some pathologic evidence is provided that certain cardiovascular lesions may predispose birds to DEN by compromising circulation of the extremities.

  18. Distal fibula fracture diagnosed with ultrasound imaging.

    Science.gov (United States)

    Kardouni, Joseph R

    2012-10-01

    The patient was a 31-year-old man serving in a military special forces unit at a remote location. He presented to a physical therapist with a chief complaint of worsening right lateral ankle pain that limited his ability to bear weight. Because the patient met the Ottawa ankle rules and there was concern for a fracture, radiographs were indicated. However, the nearest facility with radiographic capabilities was only available through air medical evacuation. Therefore, the physical therapist assessed the patient's ankle with an onsite portable ultrasound imaging unit, which demonstrated cortical irregularity along the distal fibula.

  19. Periosteal osteoblastoma of the distal femur

    Energy Technology Data Exchange (ETDEWEB)

    Nakatani, Tetsuya; Yamamoto, Tetsuji; Akisue, Toshihiro; Marui, Takashi; Hitora, Toshiaki; Kawamoto, Teruya; Nagira, Keiko; Yoshiya, Shinichi; Kurosaka, Masahiro [Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe (Japan); Fujita, Ikuo; Matsumoto, Keiji [Department of Orthopaedic Surgery, Hyogo Medical Center for Adults, Akashi, Hyogo (Japan)

    2004-02-01

    Osteoblastomas located on the surface of the cortical bone, so-called periosteal osteoblastomas, are extremely rare. We report on a case of periosteal osteoblastoma arising from the posterior surface of the right distal femur in a 17-year-old man. Roentgenographic, computed tomographic, magnetic resonance imaging, and histologic features of the case are presented. Periosteal osteoblastoma should be radiologically and histologically differentiated from myositis ossificans, avulsive cortical irregularity syndrome, osteoid osteoma, parosteal osteosarcoma, periosteal osteosarcoma, and high-grade surface osteosarcoma. Although periosteal osteoblastoma is rare, this tumor should be included in the differential diagnosis of surface-type bone tumors. (orig.)

  20. Effects of the Drop-set and Reverse Drop-set Methods on the Muscle Activity and Intramuscular Oxygenation of the Triceps Brachii among Trained and Untrained Individuals

    Directory of Open Access Journals (Sweden)

    Masahiro Goto, Shinsuke Nirengi, Yuko Kurosawa, Akinori Nagano, Takafumi Hamaoka

    2016-12-01

    Full Text Available Influence of different load exercise to muscle activity during subsequent exercise with 75% of one repetition maximum (RM load among trained and untrained individuals was verified. Resistance-trained men who were involved in resistance training (n = 16 and healthy young men who did not exercise regularly (n = 16 were recruited for this study. Each subject performed bench pressing with a narrow grip exercise using two different training set methods, the drop-set (DS (3 sets × 2-10 repetitions with 95-75% of 1RM and the reverse drop-set (RDS (3 sets × 3-10 repetitions with 55-75% of 1RM. The mean concentric contraction power, root mean square (RMS of electromyography (EMG, area under the oxygenated hemoglobin (Oxy-Hb curve, and time constant for muscle oxygen consumption (TcVO2mus values of the triceps brachii were measured during and after the DS and RDS. The trained group demonstrated significantly higher mean muscle power (242.9 ± 39.6 W vs. 215.8 ± 31.7 W, RMS of EMG (86.4 ± 10.4 % vs. 68.3 ± 9.6 %, and area under the Oxy-Hb curve (38.6 ± 7.4 %• sec vs. 29.3 ± 5.8 %• sec values during the DS than during the RDS (p < 0.05. However, in the untrained group none of the parameters differed significantly for both the DS and RDS. Furthermore, a negative correlation was detected between the area under the Oxy-Hb curve and muscle thickness (r = -0.51, p < 0.01. Long-term effects of DS on muscle strengthening and hypertrophy will be explored in further research.

  1. Degree-scale cosmic microwave background polarization measurements from three years of BICEP1 data

    Energy Technology Data Exchange (ETDEWEB)

    Barkats, D. [Joint ALMA Observatory, ESO, Santiago (Chile); Aikin, R.; Bock, J. J.; Filippini, J.; Hristov, V. V. [Department of Physics, California Institute of Technology, Pasadena, CA 91125 (United States); Bischoff, C.; Buder, I.; Kovac, J. M. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS 42, Cambridge, MA 02138 (United States); Kaufman, J. P.; Keating, B. G.; Bierman, E. M. [Department of Physics, University of California at San Diego, La Jolla, CA 92093 (United States); Su, M. [Department of Physics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139 (United States); Ade, P. A. R. [Department of Physics and Astronomy, University of Wales, Cardiff, CF24 3YB Wales (United Kingdom); Battle, J. O.; Dowell, C. D. [Jet Propulsion Laboratory, Pasadena, CA 91109 (United States); Chiang, H. C. [Astrophysics and Cosmology Research Unit, University of KwaZulu-Natal, Durban (South Africa); Duband, L. [SBT, Commissariat à l' Energie Atomique, Grenoble F-38041 (France); Hivon, E. F. [Institut d' Astrophysique de Paris, Paris (France); Holzapfel, W. L. [Department of Physics, University of California at Berkeley, Berkeley, CA 94720 (United States); Jones, W. C., E-mail: dbarkats@alma.cl [Department of Physics, Princeton University, Princeton, NJ 08544 (United States); and others

    2014-03-10

    BICEP1 is a millimeter-wavelength telescope designed specifically to measure the inflationary B-mode polarization of the cosmic microwave background at degree angular scales. We present results from an analysis of the data acquired during three seasons of observations at the South Pole (2006-2008). This work extends the two-year result published in Chiang et al., with additional data from the third season and relaxed detector-selection criteria. This analysis also introduces a more comprehensive estimation of band power window functions, improved likelihood estimation methods, and a new technique for deprojecting monopole temperature-to-polarization leakage that reduces this class of systematic uncertainty to a negligible level. We present maps of temperature, E- and B-mode polarization, and their associated angular power spectra. The improvement in the map noise level and polarization spectra error bars are consistent with the 52% increase in integration time relative to Chiang et al. We confirm both self-consistency of the polarization data and consistency with the two-year results. We measure the angular power spectra at 21 ≤ ℓ ≤ 335 and find that the EE spectrum is consistent with Lambda cold dark matter cosmology, with the first acoustic peak of the EE spectrum now detected at 15σ. The BB spectrum remains consistent with zero. From B-modes only, we constrain the tensor-to-scalar ratio to r=0.03{sub −0.23}{sup +0.27}, or r < 0.70 at 95% confidence level.

  2. Biceps Femoris Architecture and Strength in Athletes with a Previous Anterior Cruciate Ligament Reconstruction.

    Science.gov (United States)

    Timmins, Ryan G; Bourne, Matthew N; Shield, Anthony J; Williams, Morgan D; Lorenzen, Christian; Opar, David A

    2016-03-01

    This study aimed to determine whether limbs with a history of anterior cruciate ligament (ACL) injury reconstructed from the semitendinosus display different biceps femoris long head (BFlh) architecture and eccentric strength, assessed during the Nordic hamstring exercise, compared with the contralateral uninjured limb. The architectural characteristics of the BFlh were assessed at rest and at 25% of a maximal voluntary isometric contraction (MVIC) in the control group (n = 52) and in the group who had previous ACL injury (n = 15) using two-dimensional ultrasonography. Eccentric knee flexor strength was assessed during the Nordic hamstring exercise. Fascicle length was shorter (P = 0.001; d range, 0.90-1.31) and pennation angle (P range, 0.001-0.006; d range, 0.87-0.93) was greater in the BFlh of the ACL-injured limb compared with those in the contralateral uninjured limb at rest and during a 25% MVIC. Eccentric strength was lower in the ACL-injured limb when compared with the contralateral uninjured limb. Fascicle length, MVIC, and eccentric strength were not different between the left and right limb in the control group. Limbs with a history of ACL injury reconstructed from the semitendinosus have shorter fascicles and greater pennation angles in the BFlh compared with those of the contralateral uninjured side. Eccentric strength during the Nordic hamstring exercise of the ACL-injured limb is significantly lower than that of the contralateral side. These findings have implications for ACL rehabilitation and hamstring injury prevention practices, which should consider altered architectural characteristics.

  3. Changes in muscle architecture of biceps femoris induced by eccentric strength training with nordic hamstring exercise.

    Science.gov (United States)

    Alonso-Fernandez, D; Docampo-Blanco, P; Martinez-Fernandez, J

    2017-03-17

    Eccentric strength training alters muscle architecture, but it is also an important factor for the prevention of hamstring injuries. The purpose was to determine the architectural adaptations of the biceps femoris long head (BFlh) after eccentric strength training with nordic hamstring exercise (NHE), followed by a subsequent detraining period. The participants in this intervention (n=23) completed a period of 13 weeks consisting of a first week of control and prior training, followed by 8 weeks of eccentric strength training with NHE, and concluding with a 4-week period of detraining. The architectural characteristics of the BFlh were measured at rest using two-dimensional ultrasound before (M1-week 1) and after (M2-week 9) the eccentric strength training, and at the end of the detraining period (M3-week 13). The muscle fascicle length significantly increased (t=-7.73, d=2.28, P<.001) in M2 compared to M1, as well as the muscle thickness (t=-5.23, d=1.54, P<.001), while the pennation angle presented a significant decrease (t=7.81, d=2.3, P<.001). The muscle fascicle length decreased significantly (t=6.07, d=1.79, P<.001) in M3 compared to M2, while the pennation angle showed a significant increase (t=-4.63, d=1.36, P<.001). The results provide evidence that NHE may cause alterations in the architectural conditions of the BFlh and may have practical implications for injury prevention and rehabilitation programs. © 2017 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  4. String theoretic QCD axions in the light of PLANCK and BICEP2

    Energy Technology Data Exchange (ETDEWEB)

    Choi, Kiwoon [Center for Theoretical Physics of the Universe, IBS, Daejeon (Korea, Republic of); Department of Physics, KAIST, Daejeon (Korea, Republic of); Jeong, Kwang Sik [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Seo, Min-Seok [Center for Theoretical Physics of the Universe, IBS, Daejeon (Korea, Republic of)

    2014-05-15

    The QCD axion solving the strong CP problem may originate from antisymmetric tensor gauge fields in compactified string theory, with a decay constant around the GUT scale. Such possibility appears to be ruled out now by the detection of tensor modes by BICEP2 and the PLANCK constraints on isocurvature density perturbations. A more interesting and still viable possibility is that the string theoretic QCD axion is charged under an anomalous U(1){sub A} gauge symmetry. In such case, the axion decay constant can be much lower than the GUT scale if moduli are stabilized near the point of vanishing Fayet-Illiopoulos term, and U(1){sub A}-charged matter fields get a vacuum value far below the GUT scale due to a tachyonic SUSY breaking scalar mass. We examine the symmetry breaking pattern of such models during the inflationary epoch with the Hubble expansion rate 10{sup 14} GeV, and identify the range of the QCD axion decay constant, as well as the corresponding relic axion abundance, consistent with known cosmological constraints. In addition to the case that the PQ symmetry is restored during inflation, there are other viable scenarios, including that the PQ symmetry is broken during inflation at high scales around 10{sup 16}-10{sup 17} GeV due to a large Hubble-induced tachyonic scalar mass from the U(1){sub A} D-term, while the present axion scale is in the range 10{sup 9}-5 x 10{sup 13} GeV, where the present value larger than 10{sup 12} GeV requires a fine-tuning of the axion misalignment angle. We also discuss the implications of our results for the size of SUSY breaking soft masses.

  5. Laparoscopic three-port distal pancreatectomy

    Science.gov (United States)

    Subhas, Gokulakkrishna; Gupta, Natasha; Mittal, Vijay K; Jacobs, Michael J

    2011-01-01

    Aims Laparoscopic distal pancreatectomy is becoming a more commonly used procedure, which may involve the use of four to seven ports, depending on the technique. Initial data on feasibility, safety and outcome with the three-port laparoscopic distal pancreatectomy are presented. Methods The patient is placed in a partial thoracoabdominal position exposing the left flank in a reverse Trendelenberg position. A 10-mm Hassan trocar is inserted through a subcostal anterior axillary incision. A 5-mm midclavicular and 10-mm posterior axillary line trocar are placed. The specimen is retrieved from the anterior axillary line port. Results Ten women and seven men, aged 26–88 years (mean 61 years), were evaluated. Their body mass indexes ranged from 18–37 (mean 27). Pancreatic lesion size ranged from 1.0–5.5 cm (mean 3.0 cm). Operative time was 116–296 min (mean 170 min). Blood loss was 10–300 ml (mean 142 ml). No operation required conversion or additional trocar placement. Post-operative stay was 2–7 days (mean 4 days). No patient developed a pancreatic fistula. Conclusion Operative time, blood loss and post-operative stay of this three-port technique compare favourably with published data. PMID:21492337

  6. Osteoid osteoma of the distal clavicle

    Directory of Open Access Journals (Sweden)

    Bernardo Barcellos Terra

    Full Text Available ABSTRACT The osteoid osteoma is a bone tumor that accounts for 10% of benign tumors. It was described in 1935 by Jaffe, as a tumor that affects the young adult population, with a predominance of males. This study aims to present a case of late diagnosis of a patient with osteoid osteoma of the distal clavicle region. Female patient, 44 years old, non-professional volleyball player, reported pain in the anterior and superior region of the shoulder girdle, specifically in the acromioclavicular joint, which worsened at night and had been treated for nine months as tendinitis of the rotator cuff and acromioclavicular joint arthritis. After confirming the diagnosis, the patient underwent open surgery with resection of the distal clavicle. At two years of follow-up, the patient presents without local pain. In the radiographic evaluation, coracoclavicular distance is preserved and there are no signs of recurrence. Tumors of the shoulder girdle are rare and are often diagnosed late. A high degree of suspicion for the diagnosis of tumors of the shoulder girdle is needed in order to avoid late diagnosis.

  7. Role of dopamine in distal retina.

    Science.gov (United States)

    Popova, E

    2014-05-01

    Dopamine is the most abundant catecholamine in the vertebrate retina. Despite the description of retinal dopaminergic cells three decades ago, many aspects of their function in the retina remain unclear. There is no consensus among the authors about the stimulus conditions for dopamine release (darkness, steady or flickering light) as well as about its action upon the various types of retinal cells. Many contradictory results exist concerning the dopamine effect on the gross electrical activity of the retina [reflected in electroretinogram (ERG)] and the receptors involved in its action. This review summarized current knowledge about the types of the dopaminergic neurons and receptors in the retina as well as the effects of dopamine receptor agonists and antagonists on the light responses of photoreceptors, horizontal and bipolar cells in both nonmammalian and mammalian retina. Special focus of interest concerns their effects upon the diffuse ERG as a useful tool for assessment of the overall function of the distal retina. An attempt is made to reveal some differences between the dopamine actions upon the activity of the ON versus OFF channel in the distal retina. The author has included her own results demonstrating such differences.

  8. Distal vacuolar myopathy in nephropathic cystinosis.

    Science.gov (United States)

    Charnas, L R; Luciano, C A; Dalakas, M; Gilliatt, R W; Bernardini, I; Ishak, K; Cwik, V A; Fraker, D; Brushart, T A; Gahl, W A

    1994-02-01

    Nephropathic cystinosis is a lysosomal storage disorder leading to renal failure by age 10 years. Prolonged patient survival following renal transplantation has allowed the development of previously unknown long-term complications. Muscle involvement has been reported in a single posttransplant cystinosis patient, but the range of clinical, electrophysiologic, and histologic features has not been fully described. Thirteen of 54 post-renal-transplant patients that we examined developed weakness and wasting in the small hand muscles, with or without facial weakness and dysphagia. Tendon reflexes were preserved and sensory examinations were normal. Electrophysiologic studies in 11 affected patients showed normal nerve conduction velocities and preserved sensory action potentials. The voluntary motor units in the affected distal muscles had reduced amplitude and brief duration, confirmed with quantitative electromyography in 4 patients. Biopsy of the severely affected abductor digiti minimi or extensor carpi radialis brevis muscles in 2 patients revealed marked fiber size variability, prominent acid phosphatase-positive vacuoles, and absence of fiber type grouping or inflammatory cells. Crystals of cystine were detected in perimysial cells but not within the muscle cell vacuoles. The muscle cystine content of clinically affected muscles was markedly elevated. We conclude that a distal vacuolar myopathy is a common late complication of untreated nephropathic cystinosis. Although the cause is unclear, the general lysosomal defect in this disease may also affect the lysosomes within muscle fibers.

  9. Patellar instability treated with distal femoral osteotomy.

    Science.gov (United States)

    Swarup, Ishaan; Elattar, Osama; Rozbruch, S Robert

    2017-06-01

    Patellar instability can cause significant disability in both pediatric and adult patients, and it is associated with several factors including genu valgum. In this study, we describe the role of a lateral opening wedge distal femoral osteotomy (DFO) combined with lateral retinacular release in addressing genu valgum with associated patellar instability. The rationale for this approach is to medialize the patellar tendon insertion and decrease the Q angle with DFO. A consecutive series of patients were studied, and our outcomes of interest included improvements in radiographic measures and patient outcomes. Radiographic improvement was assessed using patella congruency angle (PCA), mechanical axis deviation (MAD), and lateral distal femoral angle (LDFA). Patient outcomes were assessed using Oxford Knee scores, KOOS-PS scores, VAS pain scores, and Kujala scores. We studied eight patients (10 knees) that underwent a lateral opening wedge DFO for genu valgum and patellar instability. Mean follow-up duration was 27 months. PCA improved from 30.4° lateral preoperatively to 5.7° lateral postoperatively (p=0.016). Similarly, MAD improved from 33.1mm lateral to 6.5mm medial, and LDFA improved from 82.4° to 92.7° after surgery (p=0.002). There were significant improvements in VAS pain and Kujala scores after surgery (pgenu valgum. Copyright © 2017 Elsevier B.V. All rights reserved.

  10. DIAGNÓSTICO ECOCARDIOGRÁFICO DE VENTANA AORTOPULMONAR DISTAL / Echocardiographic diagnosis of distal aortopulmonary window

    Directory of Open Access Journals (Sweden)

    Adel E. González Morejón

    2013-04-01

    Full Text Available Resumen: La ventana aortopulmonar es una comunicación entre la aorta ascendente y la arteria pulmonar, con válvulas sigmoideas bien diferenciadas.Los defectos distales son menos frecuentes y se presentan aproximadamente en 25 % de todos los pacientes con ventana aortopulmonar. Aunque la ecocardiografía transtorácica bidimensional puede proveer un diagnóstico certero en la mayoría de los casos, algunos autores solicitan la realización de otros estudios. Se presenta una lactante de 40 días de edad con diagnóstico ecocardiográfico de ventana aortopulmonar distal, que fue confirmado en el quirófano, sin necesidad de realizar otros estudios. A los 9 meses de seguimiento clínico y ecocardiográfico, la paciente se mantiene asintomática. / Abstract: The aortopulmonary window is a communication between the ascending aorta and the pulmonary artery, with well differentiated semilunar valves. Distal defects are less common and occur in approximately 25% of all patients with aortopulmonary window. Although two-dimensional transthoracic echocardiography can provide an accurate diagnosis in most cases, some authors ask for further studies. This is the case of a 40-day-old infant with echocardiographic diagnosis of distal aortopulmonary window that was confirmed in the operating room without further studies. At 9 months of clinical and echocardiographic follow-up, the patient remains asymptomatic.

  11. Proximal Biceps Tenodesis: An Anatomic Study and Comparison of the Accuracy of Arthroscopic and Open Techniques Using Interference Screws.

    Science.gov (United States)

    Kovack, Thomas J; Idoine, John D; Jacob, Paul B

    2014-02-01

    To (1) better define the anatomy of the proximal shoulder in relation to the long head of the biceps tendon, (2) compare the length-tension relationship of the biceps tendon in the native shoulder with that after arthroscopic and open tenodesis techniques using interference screws, and (3) provide surgical recommendations for both procedures based on study findings. Descriptive laboratory study. Twenty fresh-frozen cadaveric shoulders were dissected for analysis. Initial anatomic measurements involving the proximal long head of the biceps tendon (BT) were made, which included: the labral origin to the superior bicipital groove (LO-SBG), the total tendon length (TTL), the musculotendinous junction (MTJ) to the inferior pectoralis major tendon border, the MTJ to the superior pectoralis major tendon border, and the biceps tendon diameter (BTD) at 2 different tenodesis locations. These same measurements were made again after completing a simulated suprapectoral arthroscopic and open subpectoral tenodesis, both with interference screw fixation. Statistical comparisons were then made between the native anatomy and that after tenodesis, with the goal of assessing the accuracy of re-establishing the normal length-tension relationship of the long head of the BT after simulated arthroscopic suprapectoral and open subpectoral tenodesis with tenodesis screws. For all cadavers, the mean TTL was 104.1 mm. For the arthroscopic suprapectoral technique, the mean LO-SBG was 33.6 mm, and the mean tendon resection length was 12.8 mm in males and 5.0 mm in females. The mean BTD was 6.35 mm at the arthroscopic suprapectoral tenodesis site and 5.75 mm at the open subpectoral tenodesis site. Males were found to have statistically longer TTL and LO-SBG measurements (111.6 vs 96.5 mm [P = .027] and 37.2 vs 30.0 mm [P = .009], respectively). In the native shoulder, the mean distances from the MTJ to the superior and inferior borders of the pectoralis major tendon were 23.8 and 31.7 mm

  12. Segond fracture: involvement of the iliotibial band, anterolateral ligament, and anterior arm of the biceps femoris in knee trauma

    Energy Technology Data Exchange (ETDEWEB)

    Maeseneer, Michel de; Boulet, Cedric; Willekens, Inneke; Mey, Johan de; Shahabpour, Maryam [Universitair Ziekenhuis Brussel, Department of Radiology, Brussels (Belgium); Lenchik, Leon [Wake Forest University, Department of Radiology, Winston Salem, NC (United States); Cattrysse, Erik [Vrije Universiteit Brussel, Department of Experimental Anatomy, Brussels (Belgium)

    2014-12-04

    To evaluate the involvement of the iliotibial band (ITB), the anterolateral ligament (ALL), and the anterior arm of the biceps femoris in MRI-diagnosed Segond fracture and to evaluate other associated findings of Segond fracture. We retrospectively reviewed the MRI of 13 cases of Segond fracture. The studies included proton density-weighted, T2-weighted, and proton density-weighted with fat saturation images in the three planes. We studied 2 cadaveric specimens with emphasis on the ALL. One cadaveric specimen was dissected while the other was sectioned in the sagittal plane. The mean age of the patients was 36 years (range, 17-52). There were 7 men and 6 women. The mean size of the Segond bone fragment was 8 x 10 x 2 mm. The distance from the tibia varied from 2 to 6 mm. Associated findings included anterior cruciate ligament (ACL) tear (n = 13), medial collateral ligament (MCL) tear (n = 8), meniscocapsular tear of the posterior horn of the medial meniscus (n = 5), and posterolateral corner involvement (n = 4). Bone marrow edema involved the mid-lateral femoral condyle and the posterior tibial plateau on both the medial and the lateral side. Edema at the Segond area was seen, but was limited. Fibular head edema was also seen. The ITB (11 out of 13) and ALL (10 out of 13) inserted on the Segond bone fragment. The anterior arm of the biceps tendon did not insert on the Segond fracture. Associated findings of Segond fracture include ACL tear, MCL tear, medial meniscus tear, and posterolateral corner injury. Both the ITB and the ALL may be involved in the Segond avulsion. The anterior arm of the biceps femoris tendon is not involved. (orig.)

  13. Efficacy of labral repair, biceps tenodesis, and diagnostic arthroscopy for SLAP Lesions of the shoulder: a randomised controlled trial

    Directory of Open Access Journals (Sweden)

    Mowinckel Petter

    2010-10-01

    Full Text Available Abstract Background Surgery for type II SLAP (superior labral anterior posterior lesions of the shoulder is a promising but unproven treatment. The procedures include labral repair or biceps tenodesis. Retrospective cohort studies have suggested that the benefits of tenodesis include pain relief and improved function, and higher patient satisfaction, which was reported in a prospective non-randomised study. There have been no completed randomised controlled trials of surgery for type II SLAP lesions. The aims of this participant and observer blinded randomised placebo-controlled trial are to compare the short-term (6 months and long-term (2 years efficacy of labral repair, biceps tenodesis, and placebo (diagnostic arthroscopy for alleviating pain and improving function for type II SLAP lesions. Methods/Design A double-blind randomised controlled trial are performed using 120 patients, aged 18 to 60 years, with a history for type II SLAP lesions and clinical signs suggesting type II SLAP lesion, which were documented by MR arthrography and arthroscopy. Exclusion criteria include patients who have previously undergone operations for SLAP lesions or recurrent shoulder dislocations, and ruptures of the rotator cuff or biceps tendon. Outcomes will be assessed at baseline, three, six, 12, and 24 months. Primary outcome measures will be the clinical Rowe Score (1988-version and the Western Ontario Instability Index (WOSI at six and 24 months. Secondary outcome measures will include the Shoulder Instability Questionnaire (SIQ, the generic EuroQol (EQ-5 D and EQ-VAS, return to work and previous sports activity, complications, and the number of reoperations. Discussion The results of this trial will be of international importance and the results will be translatable into clinical practice. Trial Registration [ClinicalTrials.gov NCT00586742

  14. Biomechanical comparison of osteoporotic distal radius fractures fixed by distal locking screws with different length.

    Science.gov (United States)

    Liu, Xiong; Wu, Wei-dong; Fang, Ya-feng; Zhang, Mei-chao; Huang, Wen-hua

    2014-01-01

    To evaluate the postoperative stability of osteoporotic distal radius fractures fixed with distal locking screws with different length. A comminuted extra-articular dorsally unstable distal radius fracture, treated with volar locking plate system, was created. The 18 specimens were randomized into 3 groups based on distal locked screws with different length: Group A had unicortical screws with 50% length to the dorsal cortex. Group B had unicortical screws with 75% length to the dorsal cortex. Group C had bicortical screws. Axial compression and bending loads were imposed on the models before and after cycling testing as well as load to clinical and catastrophic failure. Minimum change in stiffness was observed before and after fatigue for all groups. The final stiffness to bending forces was statistically similar in all groups, but stiffness to axial compression was statistically significant different: Group A approached significance with respect to groups B and C (P = 0.017, 0.009), whereas stiffness in group B and C was statistically similar (P = 0.93). Load to clinical failure was significantly less for group A (456.54±78.59 N) compared with groups B (580.24±73.85 N) and C (591.07±38.40 N). Load to catastrophic failure was statistically similar between groups, but mean values for Group A were 18% less than means for Group C. The volar locking plate system fixed with unicortical locking screws with at least 75% length not only produced early stability for osteoporotic distal radius fractures, but also avoided extensor tendon complications due to dorsal screw protrusion.

  15. Biomechanical comparison of osteoporotic distal radius fractures fixed by distal locking screws with different length.

    Directory of Open Access Journals (Sweden)

    Xiong Liu

    Full Text Available To evaluate the postoperative stability of osteoporotic distal radius fractures fixed with distal locking screws with different length.A comminuted extra-articular dorsally unstable distal radius fracture, treated with volar locking plate system, was created. The 18 specimens were randomized into 3 groups based on distal locked screws with different length: Group A had unicortical screws with 50% length to the dorsal cortex. Group B had unicortical screws with 75% length to the dorsal cortex. Group C had bicortical screws. Axial compression and bending loads were imposed on the models before and after cycling testing as well as load to clinical and catastrophic failure.Minimum change in stiffness was observed before and after fatigue for all groups. The final stiffness to bending forces was statistically similar in all groups, but stiffness to axial compression was statistically significant different: Group A approached significance with respect to groups B and C (P = 0.017, 0.009, whereas stiffness in group B and C was statistically similar (P = 0.93. Load to clinical failure was significantly less for group A (456.54±78.59 N compared with groups B (580.24±73.85 N and C (591.07±38.40 N. Load to catastrophic failure was statistically similar between groups, but mean values for Group A were 18% less than means for Group C.The volar locking plate system fixed with unicortical locking screws with at least 75% length not only produced early stability for osteoporotic distal radius fractures, but also avoided extensor tendon complications due to dorsal screw protrusion.

  16. Effect of ageing time in vacuum package on veal longissimus dorsi and biceps femoris physical and sensory traits

    Directory of Open Access Journals (Sweden)

    G. Baldi

    2015-09-01

    Full Text Available Study evaluated the effects of vacuum ageing (2, 4, 6, 8, 10, 12, 16 days on veal loin (longissimus dorsi; LD and silverside (biceps femoris; BF physical and sensory characteristics. Ageing did not affect cooking loss, increased LD pH and L*, a* and b* in both muscles. Shear force (SF decreased until day 6 in LD and day 10 in BF. Aroma, flavor and taste were not affected, while texturetraits were improved. SF was negative correlated with tenderness and juiciness and positive correlated with BF fibrousness and stringy sensation. Ageing improved texture properties withoutaltering other sensory traits.

  17. Neurovascularized free short head of the biceps femoris muscle transfer for one-stage reanimation of facial paralysis.

    Science.gov (United States)

    Hayashi, Akiteru; Maruyama, Yu

    2005-02-01

    The single-stage technique for cross-face reanimation of the paralyzed face without nerve graft is an improvement over the two-stage procedure because it results in early reinnervation of the transferred muscle and shortens the period of rehabilitation. On the basis of an anatomic investigation, the short head of the biceps femoris muscle with attached lateral intermuscular septum of the thigh was identified as a new candidate for microneurovascular free muscle transfer. The authors performed one-stage transfer of the short head of the biceps femoris muscle with a long motor nerve for reanimation of established facial paralysis in seven patients. The dominant nutrient vessels of the short head were the profunda perforators (second or third) in six patients and the direct branches from the popliteal vessels in one patient. The recipient vessels were the facial vessels in all cases. The length of the motor nerve of the short head ranged from 10 to 16 cm, and it was sutured directly to several zygomatic and buccal branches of the contralateral facial nerve in six patients. One patient required an interpositional nerve graft of 3 cm to reach the suitable facial nerve branches on the intact side. The period required for initial voluntary movement of the transferred muscles ranged from 4 to 10 months after the procedures. The period of postoperative follow-up ranged from 5 to 42 months. Transfer of the vascularized innervated short head of the biceps femoris muscle is thought to be an alternative for one-stage reconstruction of the paralyzed face because of the reliable vascular anatomy of the muscle and because it allows two teams to operate together without the need to reposition the patient. The nerve to the short head of the biceps femoris enters the side opposite the vascular pedicle of the muscle belly, and this unique relationship between the vascular pedicle and the motor nerve is anatomically suitable for one-stage reconstruction of the paralyzed face. As much

  18. Reducing the Tension Between the BICEP2 and the Planck Measurements: A Complete Exploration of the Parameter Space

    CERN Document Server

    Li, Yi-Chao; Lu, You-Jun; Chen, Xue-Lei

    2014-01-01

    A large inflationary tensor-to-scalar ratio $r_\\mathrm{0.002} = 0.20^{+0.07}_{-0.05}$ is reported by the BICEP2 team based on their B-mode polarization detection, which is outside of the $95\\%$ confidence level of the Planck best fit model. We explore several possible ways to reduce the tension between the two by considering a model in which $\\alpha_\\mathrm{s}$, $n_\\mathrm{t}$, $n_\\mathrm{s}$ and the neutrino parameters $N_\\mathrm{eff}$ and $\\Sigma m_\\mathrm{\

  19. PHILOS humerus plate for a distal tibial fracture.

    Science.gov (United States)

    Twaij, Haider; Damany, Dev

    2013-01-04

    This report discusses the use of an alternative implant in the emergency fixation of a distal tibial fracture. We planned to fix the shear-type medial malleolar fracture in a closed, tri-malleolar fracture with a locking distal tibial plate. Intra-operatively, it was noted that the required plate was unavailable. A PHILOS humeral plate seemed to fit the contours of the distal tibia. The broad end of the PHILOS, when placed distally, gave options to place locking screws in the medial malleolar fragment. The fracture was stable after fixation. The patient made a full post-operative recovery and follow-up at 4 months was satisfactory. Despite adequate planning, there will be instances where one has to improvise. An understanding of the principles of fracture management can aid in finding solutions. PHILOS humeral plate may be used to stabilize a distal tibial fracture if an appropriate distal tibial locking plate is not available.

  20. Distal Xq duplication and functional Xq disomy

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    Schluth-Bolard Caroline

    2009-02-01

    Full Text Available Abstract Distal Xq duplications refer to chromosomal disorders resulting from involvement of the long arm of the X chromosome (Xq. Clinical manifestations widely vary depending on the gender of the patient and on the gene content of the duplicated segment. Prevalence of Xq duplications remains unknown. About 40 cases of Xq28 functional disomy due to cytogenetically visible rearrangements, and about 50 cases of cryptic duplications encompassing the MECP2 gene have been reported. The most frequently reported distal duplications involve the Xq28 segment and yield a recognisable phenotype including distinctive facial features (premature closure of the fontanels or ridged metopic suture, broad face with full cheeks, epicanthal folds, large ears, small and open mouth, ear anomalies, pointed nose, abnormal palate and facial hypotonia, major axial hypotonia, severe developmental delay, severe feeding difficulties, abnormal genitalia and proneness to infections. Xq duplications may be caused either by an intrachromosomal duplication or an unbalanced X/Y or X/autosome translocation. In XY males, structural X disomy always results in functional disomy. In females, failure of X chromosome dosage compensation could result from a variety of mechanisms, including an unfavourable pattern of inactivation, a breakpoint separating an X segment from the X-inactivation centre in cis, or a small ring chromosome. The MECP2 gene in Xq28 is the most important dosage-sensitive gene responsible for the abnormal phenotype in duplications of distal Xq. Diagnosis is based on clinical features and is confirmed by CGH array techniques. Differential diagnoses include Prader-Willi syndrome and Alpha thalassaemia-mental retardation, X linked (ATR-X. The recurrence risk is significant if a structural rearrangement is present in one of the parent, the most frequent situation being that of an intrachromosomal duplication inherited from the mother. Prenatal diagnosis is performed by

  1. Ultrasound-Assisted Distal Radius Fracture Reduction

    Science.gov (United States)

    Socransky, Steve; Skinner, Andrew; Bromley, Mark; Smith, Andrew; Anawati, Alexandre; Middaugh, Jeff; Ross, Peter

    2016-01-01

    Introduction Closed reduction of distal radius fractures (CRDRF) is a commonly performed emergency department (ED) procedure. The use of point-of-care ultrasound (PoCUS) to diagnose fractures and guide reduction has previously been described. The primary objective of this study was to determine if the addition of PoCUS to CRDRF changed the perception of successful initial reduction. This was measured by the rate of further reduction attempts based on PoCUS following the initial clinical determination of achievement of best possible reduction. Methods  We performed a multicenter prospective cohort study, using a convenience sample of adult ED patients presenting with a distal radius fracture to five Canadian EDs. All study physicians underwent standardized PoCUS training for fractures. Standard clinically-guided best possible fracture reduction was initially performed. PoCUS was then used to assess the reduction adequacy. Repeat reduction was performed if deemed indicated. A post-reduction radiograph was then performed. Clinician impression of reduction adequacy was scored on a 5 point Likert scale following the initial clinically-guided reduction and following each PoCUS scan and the post-reduction radiograph. Results  There were 131 patients with 132 distal radius fractures. Twelve cases were excluded prior to analysis. There was no significant difference in the assessment of the initial reduction status by PoCUS as compared to the clinical exam (mean score: 3.8 vs. 3.9; p = 0.370; OR 0.89; 95% CI 0.46 to 1.72; p = 0.87). Significantly fewer cases fell into the uncertain category with PoCUS than with clinical assessment (2 vs 12; p = 0.008). Repeat reduction was performed in 49 patients (41.2%). Repeat reduction led to a significant improvement (p < 0.001) in the PoCUS determined adequacy of reduction (mean score: 4.3 vs 3.1; p < 0.001). In this group, the odds ratio for adequate vs. uncertain or inadequate reduction assessment using PoCUS was 12.5 (95% CI 3

  2. Observations on the Efficacy of Superficial Needling plus Acupuncture at Yanglingquan in Treating Tendinitis of Long Head of Biceps Brachii Muscle%浮针配合针刺阳陵泉治疗肱二头肌长头肌肌腱炎疗效观察

    Institute of Scientific and Technical Information of China (English)

    方震宇; 郎伯旭

    2010-01-01

    目的 观察浮针配合针刺阳陵泉治疗肱二头肌长头肌肌腱炎临床疗效.方法 将90例患者随机分为治疗组与对照组,每组45例.治疗组采用浮针配合针刺阳陵泉治疗,对照组采用普通针刺治疗,1个疗程后对比疗效.结果 治疗组痊愈率为93.3%,对照组为66.7%,两组比较差异具有统计学意义(P<0.05).结论 浮针配合针刺阳陵泉治疗肱二头肌长头肌肌腱炎是一种有效的治疗方法.

  3. 低强度聚焦超声与脉冲超声治疗肱二头肌长头肌腱炎的疗效比较%Comparative study of the therapeutic effects of low-intensity focused ultrasound and pulsed ultrasound in treating tendinitis of long head of biceps brachii

    Institute of Scientific and Technical Information of China (English)

    李晓瑛; 肖红雨; 齐辉明; 王艳

    2015-01-01

    目的 观察低强度聚焦超声治疗肱二头肌长头肌腱炎的疗效.方法 将65例肱二头肌长头肌腱炎患者随机分为治疗组和脉冲超声治疗组,其中治疗组35例,脉冲超声治疗组30例.治疗组给予低强度聚焦超声治疗,脉冲超声治疗组给予普通超声治疗.于治疗前、治疗后7d、14 d采用视觉模拟评分法(VAS)评定2组患者的疼痛程度,并对临床疗效进行比较.结果 治疗后7d、14 d,治疗组VAS评分低于对照组(P<0.05);与治疗前比较,治疗组与脉冲超声治疗组7d、14 d VAS评分均低于治疗前;治疗组与脉冲中超声治疗组7d、14 d有效率比较,差异有统计学意义.结论 低强度聚焦超声治疗肱二头肌长头肌腱炎的效果好于普通超声,可明显缓解疼痛,改善肩关节功能.

  4. Contribution of MRI and CT arthrography to the diagnosis of intra-articular tendinopathy of the long head of the biceps.

    Science.gov (United States)

    Nourissat, G; Tribot-Laspiere, Q; Aim, F; Radier, C

    2014-12-01

    Clinical diagnosis of biceps tendinopathy is difficult to make because of the poor sensitivity of existing clinical tests. The goal of this study was to determine whether MRI or CT arthrogram could contribute to the diagnosis of tendinopathy in the intra-articular portion of the long head of biceps (LHB), while using macroscopic findings during shoulder arthroscopy as a reference. A prospective, single-centre study was performed over a 4-month period. The radiology part of the study was carried out by a radiologist experienced in shoulder imaging. The arthroscopy part of the study was conducted while the biceps was being evaluated for treatment purposes. The study included 87 patients having an average age of 45.7 years (range 17-78). Fifty-eight patients underwent CT arthrography and 38 underwent an MRI. Seven patients underwent both imaging exams. One patient was removed from the study because of a spontaneous LHB rupture. The demographics of the two study populations were equivalent. For the diagnosis of tendinopathy of the intra-articular portion of the long head of biceps, the CT arthrogram had a sensitivity of 71.43%, specificity of 100%, positive predictive value of 100% but a negative predictive value of 67.74%. For the diagnosis of tendinopathy of the intra-articular portion of the long head of biceps, the MRI had a sensitivity of 42.85%, specificity of 75%, positive predictive value of 50% but a negative predictive value of 69.23%. This study showed that radiological diagnosis of tendinopathy of the long head of biceps remains challenging. Nevertheless, CT arthrography is more sensitive and specific than MRI in identifying this disorder. III (case-control study). Copyright © 2014 Elsevier Masson SAS. All rights reserved.

  5. Intra-articular changes precede extra-articular changes in the biceps tendon following rotator cuff tears in a rat model

    Science.gov (United States)

    Peltz, Cathryn D.; Hsu, Jason E.; Zgonis, Miltiadis H.; Trasolini, Nicholas A.; Glaser, David L.; Soslowsky, Louis J.

    2011-01-01

    Background Biceps tendon pathology is common with rotator cuff tears. The mechanisms for biceps changes, and therefore its optimal treatment, are unknown. Our objective was to determine the effect of rotator cuff tears on regional biceps tendon pathology. We hypothesized that histological and compositional changes would appear before organizational changes, both would appear before mechanical changes, and changes would begin at the tendon’s insertion site. Methods Sixty-five Sprague-Dawley rats received either detachment of supraspinatus and infraspinatus tendons or sham surgery. Rats were sacrificed at 1, 4 or 8 weeks for regional measurements of histological, compositional, organizational (1, 4 and 8 weeks) or mechanical properties (4 and 8 weeks only). Results One week following tendon detachments, decreased organization and more rounded cell shape were found in the intra-articular space of the biceps tendon. Aggrecan expression was increased along the entire length of the tendon while all other compositional changes were at the tendon’s proximal insertion into bone only. With time, this disorganization and more rounded cell shape extended the length of the tendon. Organizational and cell shape changes also preceded detrimental mechanical changes, as decreased modulus in the intra-articular space was found after 8 weeks. Conclusions Results support a degenerative component to pathology in the biceps tendon. Additionally, changes resembling a tendon exposed to compressive loading occurring first in the intra-articular space indicate that the biceps tendon plays an increased role as a load bearing structure against the humeral head in the presence of rotator cuff tears. PMID:21816629

  6. Post-transplant distal limb syndrome

    Directory of Open Access Journals (Sweden)

    María Florencia Borghi Torzillo

    2017-02-01

    Full Text Available The post-transplant distal limb syndrome is a not well known entity, with a prevalence of 5% in patients with renal transplant. Its diagnosis is based on clinical symptoms, bone scintigraphy and MRI, it has a benign course and the patient recovers without sequel. We present the case of a 37-year-old male, with medical history of hypertension, Berger's disease in 1999 that required dialysis three times a week for four years (2009-2013 and renal transplant in 2013. The patient consults on January 2014 referring severe pain in both feet, with sudden onset; he remembers the exact date of the beginning of the pain and denies trauma, pain prevents ambulation. The bone scintigraphy shows pathological uptake in both feet with no difference between the two. Although there is no treatment for this disease, it has a benign course

  7. Implant arthroplasty for the distal radioulnar joint.

    Science.gov (United States)

    Scheker, Luis R

    2008-11-01

    The distal radioulnar joint (DRUJ) is a weight-bearing joint; the ulnar head is frequently excised either totally or partially and in some cases is fused because of degenerative, rheumatoid, or posttraumatic arthritis and treated with a "salvage procedure." The result of these procedures is the inability of those patients to lift even minor weight. Articles about these procedures report the ability to pronate and supinate, but they rarely discuss grip strength or lifting capacity. We present an alternative to the salvage procedures that allows full range of motions as well as the ability to grip and lift weights encountered in daily living, such as a gallon of milk. The Aptis total DRUJ replacement prosthesis (Aptis Medical, Louisville, KY), a bipolar self-stabilizing DRUJ endoprosthesis, restores the forearm function. The technique of implantation is presented here.

  8. Acute injuries of the distal radioulnar joint.

    Science.gov (United States)

    Nicolaidis, S C; Hildreth, D H; Lichtman, D M

    2000-08-01

    Distal radioulnar joint injuries can occur in isolation or in association with distal radius fractures, Galeazzi fractures, Essex-Lopresti injuries, and both-bone forearm fractures. The authors have classified DRUJ/TFCC injuries into stable, partially unstable (subluxation), and unstable (dislocation) patterns based on the injured structures and clinical findings. Clinical findings and plain radiographs are usually sufficient to diagnose the lesion, but axial CT scans are pathognomonic. Diagnostic arthroscopy is the next test of choice to visualize stable and partially unstable lesions. Stable injuries of the DRUJ/TFCC unresponsive to conservative measures require arthroscopic debridement of the TFCC tear, along with ulnar shortening if there is ulnar-positive variance. Partially unstable injuries, on the other hand, are treated with direct arthroscopic or open repair of the TFCC tear, once again, along with ulnar shortening if ulnar-positive variance is present. Unstable injuries include simple and complex DRUJ dislocations. A simple DRUJ dislocation is easily reducible but may be stable or unstable. In complex dislocation, reduction is not possible because there is soft tissue interposition or a significant tear. After the associated injury is dealt with, treatment for complex injuries requires exploration of the DRUJ, extraction of the interposed tissue, repair of the soft tissues, and open reduction and internal fixation of the ulnar styloid fracture (if present and displaced). The early recognition and appropriate treatment of an acute DRUJ injury are critical to avoid progression to a chronic DRUJ disorder, the treatment of which is much more difficult and much less satisfying.

  9. MADURACIÓN DEL SOLOMO (Biceps femoris EN VACAS DE DESCARTE Bos indicus Y Bos taurus

    Directory of Open Access Journals (Sweden)

    Roger Alonso Cubero-Rojas

    2013-01-01

    Full Text Available El objetivo de este trabajo fue evaluar el efecto de la maduración sobre la terneza del músculo Biceps femoris en vacas de descarte Bos indicus y Bos taurus. En la planta procesadora de Montecillos R.L., ubicada en Alajuela, se realizó la escogencia y sacrificio de los animales, la maduración y empaque al vacío de la carne. La cocción, determinación de la terneza y evaluación sensorial se llevó a cabo a los 0, 14 y 28 días de maduración, en el Laboratorio de Análisis Sensorial del Centro de Investigaciones en Tecnología de Alimentos de la Universidad de Costa Rica, ubicado en San Pedro de Montes de Oca, San José, en julio del año 2011. De acuerdo con la evaluación instrumental, la especie y la cronometría dental no fueron factores significativos en la determinación de la terneza de la carne, mientras que el tiempo de maduración sí mostró cambios altamente significativos (p>0,001 sobre el mismo parámetro. Los mejores resultados se obtuvieron a los 28 días, donde B. indicus mostró 3,78 kg de fuerza al corte, mientras que para B. taurus se obtuvo 3,88 kg. En la evaluación sensorial, los animales B. indicus se calificaron como más jugosos (p=0,016 y con mejor sabor (p<0,001. Se determinó una relación inversa entre sabor y tiempo de maduración, lo cual indicó que a mayor tiempo de maduración el sabor de la carne se volvió menos agradable al paladar.

  10. The Secretory Leukocyte Protease Inhibitor mRNA expression is involved with inflammatory control after downhill exercise in the triceps brachii intermediary head in Wistar rats.

    Science.gov (United States)

    Minari, André Luis Araujo; Oyama, Lila Missae; Dos Santos, Ronaldo Vagner Thomatieli

    2017-06-30

    After severe skeletal muscle damage, communication between inflammatory macrophages, myogenic cells, and modulatory secretion factors is essential to induce re-establishment of skeletal muscle structure. To analyze when characteristic gene expression of macrophages, myogenic cells, and SLPI are modulated after an exercise-induced muscle damage (EIMD) downhill protocol. Twenty-six rats were exposed to an experimental protocol of exercise and euthanized before (CTRL), immediately after (G0), and 24 (G24) and 48 (G48) hours after the exercise. After euthanasia, the Triceps brachii were dissected and analyzed by enzyme-linked immunosorbent assay and real time polymerase chain reaction. The CD68 expression was higher in the G24 when compared with all groups (p value < 0.05), whereas the CD163 was inhibited compared with G0 (p value < 0.05). MyoD and Myogenin were higher in the G24 when compared with G0 and G48 (p value < 0.05). The mRNA Secretory Leukocyte Protease Inhibitor (SLPI) was higher in the G48 when compared with the CTRL and G0 (p value < 0.05). IL-6 and TNF-α cytokines did not significantly change, but IL-10 presented a trend to be lower in the G0 when compared with G24 (p value = 0.054). A significant negative correlation was observed between CD68/CD163 (C.C = -0.71) and positive correlations between CD68/Myogenin (C.C = 0.65); MyoD/Myogenin (C.C = 0.72); IL-10/MyoD (C.C = 0.46), IL-10/MYOGENIN (C.C = 0.59); and IL-6/IL-10 (C.C = 0.64). A higher expression of CD68, concomitant with an elevation in MyoD and Myogenin 24 h after exercise, along with some correlations, suggests macrophage communication with myogenic cells independent of CD163 elevation. Additionally, the reestablishment of IL-10 in 24 h with the SLPI increased until 48 h indicate that these molecules are involved with anti-inflammatory transition after downhill exercise in the TBIH of Wistar rats.

  11. Mapping the Articular Contact Area of the Long Head of the Biceps Tendon on the Humeral Head

    Directory of Open Access Journals (Sweden)

    Brent J. Morris

    2014-01-01

    Full Text Available The purpose of this investigation was to calculate the contact surface area of the long head of the biceps (LHB in neutral position and abduction. We sought to determine whether the LHB articulates with the humeral head in a consistent pattern comparing articular contact area in neutral position and abduction. Eleven fresh frozen matched cadaveric shoulders were analyzed. The path of the biceps tendon on the articular surface of the humeral head and the total articular surface were digitized using a MicronTracker 2 H3-60 three-dimensional optical tracker. Contact surface area was significantly less in abduction than in neutral position (P=0.002 with a median ratio of 41% (36%, 47.5%. Ratios of contact area in neutral position to full articular surface area were consistent between left and right shoulders (rho=1, P=0.017 as were ratios of abduction area to full articular surface area (rho= 0.97, P=0.005. The articular contact surface area is significantly greater in neutral position than abduction. The ratios of articular contact surface areas to total humeral articular surface areas have a narrow range and are consistent between left and right shoulders of the same cadaver.

  12. On the effect of thermal agents in the response of the brachial biceps at different contraction levels.

    Science.gov (United States)

    Garcia, Larissa Martins; Soares, Alcimar Barbosa; Simieli, Camila; Boratino, Alessandra Vairo Peres; Guirro, Rinaldo Roberto de Jesus

    2014-12-01

    The objective of this study was to assess electromyographic features of the brachial biceps muscle after the application of cryotherapy and short-wave diathermy. Sixty healthy volunteers participated in the study and were equally divided into three groups: cryotherapy - application of ice packs for 30 min; short-wave diathermy for 20 min; and control. The thermal agents were applied to the anterior and posterior regions of the non-dominant arm. The electromyographic (EMG) signal from the brachial biceps was recorded before and after the application of thermal agents during flexion of the elbow joint at 25%, 50%, 75% of a maximum voluntary isometric contraction defined at least two days before the actual experiments (MVICbl). The volunteers also were asked to execute a free MVIC before and after the application of the thermal agents (MVIC free). A linear regression model with mixed effects (random and fixed) was used. Intra-group analysis showed a reduction in root mean square (RMS) at MVIC free, with no change in the median frequency of the EMG signal at any contraction level for the short-wave diathermy group. An increase on RMS values and a decrease on median frequencies were found after the application of cryotherapy for all contraction levels. The results imply that cryotherapy plays an important role on changing neuromuscular responses at various levels of muscle contraction. Therapists should be aware of that and carefully consider its use prior to activities in which neuromuscular precision is required.

  13. Advanced Development of an Active Neuromusculature Response to Mechanical Stress.

    Science.gov (United States)

    1984-10-31

    damping component, since the sarcolemna attached to the z disks does not allow appreciable movement. The tendinous parts of the muscle fiber are...can be found. These range from uo-.005 for the human rectus femorus muscle to uo-.009 for the human biceps muscle (Hatze, 1979) with an average value...three elbow flexor muscles: biceps brachii, brachial is and brachloradialis. Examination of the biceps brachii more closely shows the origin of the

  14. "Distal common pathway in atrioventricular node reentrant tachycardia "

    Directory of Open Access Journals (Sweden)

    "Moghaddam M

    2001-06-01

    Full Text Available Anotomical boundary of atrioventricular node reentrant tachycardia (AVNRT is composed of fast and slow pathways right atrium in upper turnaround and common distal pathway in lower turnaround. We performed electophsiologic study (EPS in 152 patients and could show the existence of distal common pathway with decremental conduction properties in approximately 40 patients.

  15. Distal radius fractures: what determines the outcome after surgery?

    NARCIS (Netherlands)

    Teunis, T.

    2016-01-01

    This thesis addresses current issues in the outcome of operatively treated distal radius fractures. The general aim was to determine factors associated with adverse events, loss of motion, functional limitations, and opioid use after surgery. Injury In 3D complete articular distal radius fracture mo

  16. Young Children's Sibling Relationship Quality: Distal and Proximal Correlates

    Science.gov (United States)

    Kretschmer, Tina; Pike, Alison

    2009-01-01

    Background: Relationships within families are interdependent and related to distal environmental factors. Low socioeconomic status (SES) and high household chaos (distal factors) have been linked to less positive marital and parent-child relationships, but have not yet been examined with regard to young children's sibling relationships. The…

  17. Distal clavicular osteolysis: MR evidence for subchondral fracture

    Energy Technology Data Exchange (ETDEWEB)

    Kassarjian, Ara; Palmer, William E. [Massachusetts General Hospital, Department of Radiology, Division of Musculoskeletal Radiology, Yawkey Center, Boston, MA (United States); Llopis, Eva [Hospital de la Ribera, Department of Radiology, Valencia (Spain)

    2007-01-15

    To investigate the association between distal clavicular osteolysis and subchondral fractures of the distal clavicle at MRI. This study was approved by the hospital human research committee, which waived the need for informed consent. Three radiologists retrospectively analyzed 36 shoulder MR examinations in 36 patients with imaging findings of distal clavicular osteolysis. The presence of a subchondral fracture of the distal clavicle, abnormalities of the acromioclavicular joint, rotator cuff tears and labral tears were assessed by MRI. These cases were then compared with 36 age-matched controls. At MRI, 31 of 36 patients (86%) had a subchondral line within the distal clavicular edema, consistent with a subchondral fracture. Of the 36 patients, 32 (89%) had fluid in the acromioclavicular joint, while 27 of 36 patients (75%) had cysts or erosions in the distal clavicle. There were 13 patients (36%) with associated labral tears, while eight patients (22%) had partial-thickness rotator cuff tears. In the control group one of 36 (3%) had a subchondral line (P<0.05), while ten of 36 (28%) had rotator cuff tears and 13 of 36 (36%) had labral tears. These latter two were not statistically significant between the groups. A distal clavicular subchondral fracture is a common finding in patients with imaging evidence of distal clavicular osteolysis. These subchondral fractures may be responsible for the propensity of findings occurring on the clavicular side of the acromioclavicular joint. (orig.)

  18. Lower leg electrical impedance after distal bypass surgery

    DEFF Research Database (Denmark)

    Belanger, G K; Bolbjerg, M L; Heegaard, N H;

    1998-01-01

    Electrical impedance was determined in 13 patients following distal bypass surgery to evaluate lower leg oedema as reflected by its circumference. Tissue injury was assessed by the plasma concentration of muscle enzymes. After surgery, the volume of the control lower leg increased from 1250 (816...... to be a useful method for the evaluation of lower leg oedema after distal bypass surgery....

  19. The distal radial decompression osteotomy for ulnar impingement syndrome.

    Science.gov (United States)

    Krimmer, Hermann; Unglaub, Frank; Langer, Martin F; Spies, Christian K

    2016-01-01

    The decompression of the distal radioulnar joint (DRUJ) is performed by ulnar translation of the radial shaft proximal to the sigmoid notch, i.e. detensioning of the distal part of the interosseous membrane (DIOM) while containment of the DRUJ is achieved by closed wedge osteotomy of the radius. The osteotomy shortens the radius which entails detensioning of the triangular fibrocartilage complex (TFCC). Facilitating the modified Henry approach to the distal palmar radius a radial based wedge osteotomy is applied. The proximal osteotomy is proximal to the ulnar head and distal osteotomy is proximal to the sigmoid notch to prevent iatrogenic impingement. Ulnar translation of the radial shaft is performed to loosen the DIOM. The closed wedge osteotomy reduces radial inclination which will foster containment of the DRUJ. Distal radial decompression osteotomy of the DRUJ preserves DRUJ function while relieving painful impingement. Further surgical interventions are not compromised in case of failure.

  20. An intrinsic timer specifies distal structures of the vertebrate limb.

    Science.gov (United States)

    Saiz-Lopez, Patricia; Chinnaiya, Kavitha; Campa, Victor M; Delgado, Irene; Ros, Maria A; Towers, Matthew

    2015-09-18

    How the positional values along the proximo-distal axis (stylopod-zeugopod-autopod) of the limb are specified is intensely debated. Early work suggested that cells intrinsically change their proximo-distal positional values by measuring time. Recently, however, it is suggested that instructive extrinsic signals from the trunk and apical ectodermal ridge specify the stylopod and zeugopod/autopod, respectively. Here, we show that the zeugopod and autopod are specified by an intrinsic timing mechanism. By grafting green fluorescent protein-expressing cells from early to late chick wing buds, we demonstrate that distal mesenchyme cells intrinsically time Hoxa13 expression, cell cycle parameters and the duration of the overlying apical ectodermal ridge. In addition, we reveal that cell affinities intrinsically change in the distal mesenchyme, which we suggest results in a gradient of positional values along the proximo-distal axis. We propose a complete model in which a switch from extrinsic signalling to intrinsic timing patterns the vertebrate limb.

  1. Magnetic stimulation of biceps after intercostal cross-innervation for brachial plexus palsy. A study of motor evoked potentials in 25 patients.

    Science.gov (United States)

    Kawai, H; Murase, T; Shibuya, R; Kawabata, H; Yonenobu, K; Masatomi, T; Ono, K

    1994-07-01

    We studied the motor evoked potentials (MEP) in the biceps of 25 patients with traumatic brachial plexus palsy from root avulsion after cross-innervation by intercostal nerves. We used transcranial, transcervical and transthoracic magnetic stimulation at 8 to 235 months (mean 51) after transfer of intercostal nerves to the musculocutaneous nerve. Biceps strength recovered to MRC grade 2 in eight patients, grade 3 in three and grade 4 in 14. The mean latency of the MEP in the normal biceps on transcranial stimulation was 12.5 +/- 1.3 ms and on transcervical stimulation 6.3 +/- 1.1 ms. After intercostal reinnervation the mean latency on transcranial stimulation was 21.7 +/- 4.5 ms and on transthoracic stimulation 11.6 +/- 3.8 ms. The latency of the biceps MEP after reinnervation by intercostal nerves on transcranial and transthoracic magnetic stimulation correlated well with the duration of follow-up and the latency of the MEP on transthoracic magnetic stimulation correlated significantly with muscle power.

  2. Proximal coracobrachialis tendon rupture, subscapularis tendon rupture, and medial dislocation of the long head of the biceps tendon in an adult after traumatic anterior shoulder dislocation

    Directory of Open Access Journals (Sweden)

    Bryan M Saltzman

    2015-01-01

    Full Text Available Rupture of the coracobrachialis is a rare entity, in isolation or in combination with other muscular or tendinous structures. When described, it is often a result of direct trauma to the anatomic area resulting in rupture of the muscle belly. The authors present a case of a 57-year-old female who suffered a proximal coracobrachialis tendon rupture from its origin at the coracoid process, with concomitant subscapularis tear and medial dislocation of the long head of biceps tendon after first time traumatic anterior shoulder dislocation. Two weeks after injury, magnetic resonance imaging suggested the diagnosis, which was confirmed during combined arthroscopic and open technique. Soft-tissue tenodesis of coracobrachialis to the intact short head of the biceps, tenodesis of the long head of biceps to the intertubercular groove, and double-row anatomic repair of the subscapularis were performed. The patient did well postoperatively, and ultimately at 6 months follow-up, she was without pain, and obtained 160΀ of active forward elevation, 45΀ of external rotation, internal rotation to T8, 5/5 subscapularis and biceps strength. Scoring scales had improved from the following preoperative to final follow-up: American Shoulder and Elbow Surgeons, 53.33-98.33; constant, 10-100; visual analogue scale-pain, 4-0. DASH score was 5.

  3. Does Additional Biceps Augmentation Improve Rotator Cuff Healing and Clinical Outcomes in Anterior L-Shaped Rotator Cuff Tears? Clinical Comparisons With Arthroscopic Partial Repair.

    Science.gov (United States)

    Jeon, Yoon Sang; Lee, Juyeob; Kim, Rag Gyu; Ko, Young-Won; Shin, Sang-Jin

    2017-08-01

    The repair of anterior L-shaped tears is usually difficult because of the lack of anterior rotator cuff tendon to cover the footprint. The biceps tendon is usually exposed from the retracted anterolateral corner of the torn tendon and can be easily used to augment rotator cuff repair. Hypothesis/Purpose: This study compared the clinical outcomes of the biceps augmentation technique with those of partial tendon repair for the arthroscopic treatment of large anterior L-shaped rotator cuff tears to evaluate the role of additional biceps augmentation in tendon healing. We hypothesized that the biceps augmentation technique would lead to a lower rotator cuff tendon retear rate and provide satisfactory functional outcomes. Cohort study; Level of evidence, 3. This study included 64 patients with anterior L-shaped rotator cuff tears who underwent arthroscopic repair. Patients were divided into 2 groups: group A (31 patients) underwent repair of an anterior L-shaped tear combined with biceps augmentation, and group B (33 patients) had a partially repaired tendon whose footprint was exposed after repair without undue tension on the retracted tendon. Clinical evaluations were performed using the American Shoulder and Elbow Surgeons (ASES) score, Constant score, muscle strength, visual analog scale for pain, and patient satisfaction. Magnetic resonance imaging (MRI) was performed for tendon integrity at 6 months postoperatively. The mean period of follow-up was 29.1 ± 3.5 months (range, 24-40 months). The mean ASES and Constant scores significantly improved from 52.8 ± 10.6 and 43.2 ± 9.9 preoperatively to 88.2 ± 6.9 and 86.8 ± 6.2 at final follow-up in group A ( P rotation [ER]: 57.5 ± 9.9 to 86.8 ± 9.3; internal rotation [IR]: 68.1 ± 10.8 to 88.1 ± 8.4; P rotator cuff tendon on postoperative MRI. The retear rate between the 2 groups showed no significant difference ( P = .552). Regarding clinical outcomes, both groups had no significant difference in the ASES score

  4. Unilateral maxillary molar distalization with zygoma-gear appliance.

    Science.gov (United States)

    Kilkis, Dogan; Bayram, Mehmet; Celikoglu, Mevlut; Nur, Metin

    2012-08-01

    The aim of this study was to present the orthodontic treatment of a 15-year-old boy with a unilateral maxillary molar distalization system, called the zygoma-gear appliance. It consisted of a zygomatic anchorage miniplate, an inner bow, and a Sentalloy closed coil spring (GAC International, Bohemia, NY). A distalizing force of 350 g was used during the distalization period. The unilateral Class II malocclusion was corrected in 5 months with the zygoma-gear appliance. The maxillary left first molar showed distalization of 4 mm with an inclination of 3°. The maxillary premolars moved distally with the help of the transseptal fibers. In addition, there were slight decreases in overjet (-0.5 mm) and maxillary incisor inclination (-1°), indicating no anchorage loss from the zygoma-gear appliance. Preadjusted fixed appliances (0.022 × 0.028-in, MBT system; 3M Unitek, Monrovia, Calif) were placed in both arches to achieve leveling and alignment. After 14 months of unilateral distalization with the zygoma-gear appliance and fixed appliances, Class I molar and canine relationships were established with satisfactory interdigitation of the posterior teeth. Acceptable overjet and overbite were also achieved. This article shows that this new system, the zygoma-gear appliance, can be used for unilateral maxillary molar distalization without anchorage loss.

  5. Tratamento cirúrgico da tendinite distal da patela Surgical treatment of the distal patellar tendinitis

    Directory of Open Access Journals (Sweden)

    Marco Martins Amatuzzi

    2005-01-01

    Full Text Available A tendinite distal da patela é uma doença que acomete principalmente jovens esportistas e caracteriza-se por dor referida na extremidade distal da patela junto à inserção do ligamento patelar. O tratamento inicial preconizado é sempre conservador com fisioterapia. A grande maioria tem boa resposta a este tipo de conduta, mas em alguns raros casos os sintomas não regridem exigindo uma mudança de conduta. Para este grupo usamos o tratamento cirúrgico com técnica derivada de Trillat que se baseia na utilização de um enxerto de parte do tendão do músculo Grácil implantado dentro do ligamento patelar, inserido intra-ósseo na patela e fixado na tuberosidade anterior da tíbia. Foram operados seis pacientes, sendo que em dois casos a operação foi bilateral, totalizando oito joelhos. O seguimento mínimo foi de três anos, com avaliação final dentro do índice considerado como EXCELENTE, conforme a cotação ARPÉGE, para todos os joelhos.Distal patellar tendinitis is a young athlete's disease characterized by pain at the distal patellar pole, near the patellar ligament insertion. Early treatment recommended is generally conservative, with physical therapy. The great majority of patients present favorable responses to this approach, but, in some cases, the remission of symptoms does not occur, requiring a different approach. For this group, surgical treatment with a technique derived from that of Trillat was used, which is based on the use of a graft removed from a portion of gracillis muscle tendon into patellar ligament, intraosseously inserted in the patella and fixed at the tibial anterior tuberosity. Six patients were operated, bilaterally in two cases, totaling eight knees. The minimum follow-up time was three years, with all knees presenting an EXCELLENT score, according to ARPÉGE evaluation.

  6. The MR arthrographic anatomy of the biceps labral insertion and its morphological significance with labral tears in patients with shoulder instability

    Energy Technology Data Exchange (ETDEWEB)

    Jakanani, G.C., E-mail: gcjakanani@gmail.com [Leicester Royal Infirmary, Leicester (United Kingdom); Botchu, R., E-mail: drrajeshb@gmail.com [Leicester Royal Infirmary, Leicester (United Kingdom); Rennie, W.J., E-mail: winston.rennie@gmail.com [Leicester Royal Infirmary, Leicester (United Kingdom)

    2012-11-15

    Introduction: Most of the fibres of the long head of biceps tendon attach on the superior labrum just posterior to the supraglenoid tubercle. Aim: Our hypothesis was that posteriorly attached biceps tendons predispose to posterior superior labral tears and SLAP lesions. Methods and materials: A prospective analysis of all MR shoulder arthrograms for shoulder instability referred from the shoulder specialist clinics, performed during a one year period were reviewed by two independent observers who were blinded to clinical history. The biceps attachment was classified into four groups according to the method described in an earlier cadaveric study into four groups; posterior-type 1, predominantly posterior-type 2, equal contributions to both anterior and posterior labrum-type 3 and predominantly anterior labral attachment-type 4. Data was analysed using Kappa statistics and Fischer's exact test. Results: 48 patients (33 males and 15 females) were included in this study with a mean age of 32 years. Majority, 22 patients (46%) had a type 1 attachment of the biceps on the superior labrum. There was moderate intra-observer and good interobserver agreement with a Kappa of 0.58 and 0.63 respectively. There was a significant association between a type 2 attachment and posterior tears (p {<=} 0.04) and also between a type 2 attachment and SLAP tears (p {<=} 0.04). Conclusion: Our results suggest that variation in anatomy of biceps origin influences the type of labral tears that occur in patients with shoulder instability. The importance of these findings could influence selection of individuals in throwing sports like cricket and baseball.

  7. Systematics of injuries of the rotator cuff and biceps tendon; Systematik der Verletzungen von Rotatorenmanschette und Bizepssehne

    Energy Technology Data Exchange (ETDEWEB)

    Breitenseher, M.J. [Landesklinikum Horn, Institut fuer Radiologie und interventionelle Radiologie, Horn (Austria); Pones, M.; Breitenseher, J.B. [Medizinische Universitaet Wien, Univ.-Klinik fuer Radiodiagnostik, Wien (Austria)

    2015-03-01

    Injuries of the rotator cuff and the biceps tendon demonstrate different patterns, which can be recognized clinically and radiologically. These patterns are impingement syndrome with additional trauma, isolated trauma of the rotator cuff and shoulder dislocation causing rotator cuff tears. Furthermore, it is clinically crucial to evaluate the extent of a rotator cuff injury. Magnetic resonance imaging (MRI) is the modality of choice to differentiate these patterns. (orig.) [German] Bei der Verletzung von Rotatorenmanschette und Bizepssehne koennen verschiedene Muster klinisch und radiologisch erkannt werden. Diese Muster sind das Impingementsyndrom mit einem zusaetzlichen Trauma, das isolierte Trauma und die Verletzung der Rotatorenmanschette im Rahmen einer Schulterluxation. Darueber hinaus ist die Beurteilung des Ausmasses einer Verletzung von zentraler klinischer Relevanz. Die MRT kann die Differenzierung dieser Muster bestmoeglich durchfuehren. (orig.)

  8. Higgs inflation with singlet scalar dark matter and right-handed neutrino in the light of BICEP2

    CERN Document Server

    Haba, Naoyuki

    2014-01-01

    We discuss the Higgs inflation scenario with singlet scalar dark matter and a right-handed neutrino. The singlet scalar and the right-handed neutrino play crucial roles for realizing a suitable plateau of Higgs potential with the center value of the top mass of Tevatron and LHC measurements. This Higgs inflation scenario predicts about 1 TeV scalar dark matter and $\\mathcal{O}(10^{14})$ GeV right-handed neutrino by use of 125.6 GeV Higgs mass, 173.34 GeV top mass, and a non-minimal gravity coupling $\\xi\\simeq10.1$. This inflation model is consistent with the recent result of tensor-to-scalar ratio $r=0.20_{-0.05}^{+0.07}$ by the BICEP2 collaboration.

  9. Distal Fibula Fractures in National Football League Athletes

    Science.gov (United States)

    Werner, Brian C.; Mack, Christina; Franke, Kristina; Barnes, Ronnie P.; Warren, Russell F.; Rodeo, Scott A.

    2017-01-01

    Background: Despite the frequency of distal fibula fractures in elite athletes and the significant potential impact on the athletes’ season and future careers, little data exist characterizing the epidemiology of these injuries or, more importantly, return to competition. Purpose: To (1) evaluate the incidence of acute distal fibula fractures in National Football League (NFL) athletes, including isolated distal fibula and combined ankle fracture patterns; (2) analyze distal fibula fracture rates in NFL athletes by position, type of play, and contact type; (3) determine the rates of distal fibula fracture surgery in NFL athletes; and (4) report the days missed due to distal fibula fractures in NFL athletes. Study Design: Descriptive epidemiology study. Methods: A retrospective review of distal fibula fractures reported to the NFL from 2000 to 2014 was performed using the NFL Injury Surveillance System. All distal fibula fractures were included, along with isolated and combined fracture patterns. Stress fractures and proximal fibula fractures were excluded. Epidemiological data and rates of surgery were determined. Return to sport was calculated and stratified by injury pattern and management. Results: Overall, 237 distal fibula fractures in NFL athletes from 2000 to 2014 were included; 197 (83%) were isolated distal fibula fractures. A mean of 16 distal fibula fractures occurred each year (median, 16 per year). Fractures occurred most frequently on running (38%) and passing (24%) plays, but the frequency was next highest on kickoffs (16%), despite the relative infrequency of kickoffs during the average game compared with other play types. Surgery was reported for more than half of all distal fibula fractures (n = 128, 54%). Overall, patients who underwent surgery missed significantly more days (mean, 123.8 days) than players who did not undergo surgery (mean, 75.3 days) (P NFL athletes and result in significant time missed from competition. Further research is

  10. Distal Fibula Fractures in National Football League Athletes.

    Science.gov (United States)

    Werner, Brian C; Mack, Christina; Franke, Kristina; Barnes, Ronnie P; Warren, Russell F; Rodeo, Scott A

    2017-09-01

    Despite the frequency of distal fibula fractures in elite athletes and the significant potential impact on the athletes' season and future careers, little data exist characterizing the epidemiology of these injuries or, more importantly, return to competition. To (1) evaluate the incidence of acute distal fibula fractures in National Football League (NFL) athletes, including isolated distal fibula and combined ankle fracture patterns; (2) analyze distal fibula fracture rates in NFL athletes by position, type of play, and contact type; (3) determine the rates of distal fibula fracture surgery in NFL athletes; and (4) report the days missed due to distal fibula fractures in NFL athletes. Descriptive epidemiology study. A retrospective review of distal fibula fractures reported to the NFL from 2000 to 2014 was performed using the NFL Injury Surveillance System. All distal fibula fractures were included, along with isolated and combined fracture patterns. Stress fractures and proximal fibula fractures were excluded. Epidemiological data and rates of surgery were determined. Return to sport was calculated and stratified by injury pattern and management. Overall, 237 distal fibula fractures in NFL athletes from 2000 to 2014 were included; 197 (83%) were isolated distal fibula fractures. A mean of 16 distal fibula fractures occurred each year (median, 16 per year). Fractures occurred most frequently on running (38%) and passing (24%) plays, but the frequency was next highest on kickoffs (16%), despite the relative infrequency of kickoffs during the average game compared with other play types. Surgery was reported for more than half of all distal fibula fractures (n = 128, 54%). Overall, patients who underwent surgery missed significantly more days (mean, 123.8 days) than players who did not undergo surgery (mean, 75.3 days) (P NFL athletes and result in significant time missed from competition. Further research is required to determine the optimal management of fibula

  11. Intra-Articular Osteotomy for Distal Humerus Malunion

    Directory of Open Access Journals (Sweden)

    René K. Marti

    2009-01-01

    Full Text Available Intra-articular osteotomy is considered in the rare case of malunion after a fracture of the distal humerus to restore humeral alignment and gain a functional arc of elbow motion. Traumatic and iatrogenic disruption of the limited blood flow to the distal end of the humerus resulting in avascular necrosis of capitellum or trochlea is a major pitfall of the this technically challenging procedure. Two cases are presented which illustrate the potential problems of intra-articular osteotomy for malunion of the distal humerus.

  12. An Asian perspective on the management of distal radius fractures.

    Science.gov (United States)

    Sebastin, Sandeep J; Chung, Kevin C

    2012-05-01

    There is limited data regarding the epidemiology, pathology, and management of distal radius fractures from centers in Asia. The advanced economies in Asia include Hong Kong, Japan, Korea, Singapore, and Taiwan, whereas the prominent emerging economies are China, India, Malaysia, Philippines, and Thailand. This article examines the available epidemiological data from Asia, compares the management of distal radius fractures in the advanced and emerging Asian economies and how they compare with the current management in the west. It concludes by offering solutions for improving outcomes of distal radius fractures in Asia.

  13. An alternative method of osteosynthesis for distal humeral shaft fractures.

    Science.gov (United States)

    Levy, Jonathan C; Kalandiak, Steven P; Hutson, James J; Zych, Gregory

    2005-01-01

    Treatment of extra-articular distal humerus shaft fractures with plating techniques is often difficult, as traditional centrally located posterior plates often encroach on the olecranon fossa, limiting distal osseous fixation. The use of a modified Synthes Lateral Tibial Head Buttress Plate (Synthes, Paoli, PA) allows for a centrally placed posterior plating of the humeral shaft that angles anatomically along the lateral column to treat far distal humeral shaft fractures. Fifteen patients treated in this manner were followed to radiographic and clinical union. There were no cases of instrumentation failure or loss of reduction.

  14. Fracture of the distal radius: epidemiology and premanagement radiographic characterization.

    Science.gov (United States)

    Porrino, Jack A; Maloney, Ezekiel; Scherer, Kurt; Mulcahy, Hyojeong; Ha, Alice S; Allan, Christopher

    2014-09-01

    Fractures of the distal radius are common and frequently encountered by the radiologist. We review the epidemiology, classification, as well as the concept of instability. Salient qualitative and quantitative features of the distal radius fracture identifiable on the routine radiography series are highlighted. We conclude with a synopsis of descriptors that are of greatest utility to the clinician for treatment planning and that should be addressed in the radiology report. A detailed understanding of the intricacies of the distal radius fracture is necessary for the radiologist to provide a clinically relevant description.

  15. Quantitative ultrasound facilitates the exploration of morphological association of the long head biceps tendon with supraspinatus tendon full thickness tear.

    Directory of Open Access Journals (Sweden)

    Ke-Vin Chang

    Full Text Available Pathology of the long head biceps tendon (LHBT is associated with rotator cuff tears but whether the LHBT texture changes following supraspinatus tendon full thickness tear (SSFT can be detected at the extra-articular segment remains unknown. This cross-sectional study aimed to explore the morphological differences of the LHBT in shoulders with and without deficient rotator cuffs by using quantitative ultrasound.We selected 145 cases with SSFT and 145 age-and- gender-matched controls. The width, thickness, flattening ratio, cross-sectional area, and echogenicity ratio of the LHBT were measured and a general linear model was used to clarify the relationship between rotator cuff pathology and LHBT morphology. The receiver operating characteristic curves of each parameter were constructed for SSFT discrimination and the maximal Youden indexes were used to define the best cut-off points.We found increased thickness and cross-sectional area but decreased flattening ratio in shoulders with SSFT, and no between-group differences in the width and echogenicity ratio. The LHBT appearance was modified by biceps peritendinous effusion and medial subluxation, but not by the size of SSFT. The flattening ratio was the best discriminator for SSFT with an area under curve of 0.81 (95% confidence interval, 0.76-0.86. The cut-off values to differentiate between the non-tear and tear groups were 2.00 mm of the thickness, 1.73 of the flattening ratio and 10.53 mm(2 of the cross-sectional area.Quantitative ultrasound facilitated the detection of the LHBT morphological changes following SSFT and demonstrated its potential utility in discriminating rotator cuff deficiency.

  16. Biomechanical performance of subpectoral biceps tenodesis: a comparison of interference screw fixation, cortical button fixation, and interference screw diameter.

    Science.gov (United States)

    Sethi, Paul M; Rajaram, Arun; Beitzel, Knut; Hackett, Thomas R; Chowaniec, David M; Mazzocca, Augustus D

    2013-04-01

    Subpectoral biceps tenodesis with interference screw fixation allows reproducible positioning of the tendon to help maintain the length-tension relationship. The aim of our study was to evaluate the role of cortical button fixation in isolation or as an augment to interference screw fixation and to determine if the diameter of the interference screw affected fixation strength. Thirty-two cadaveric shoulders were dissected and randomized to 1 of 4 groups: (1) 7-mm interference screw and cortical button, (2) cortical button alone, (3) 7-mm interference screw, or (4) 8-mm interference screw. Testing was performed on a materials testing system with a 100-N load cycled at 1 Hz for 5000 cycles, followed by an axial load to failure test. Cyclic displacement, ultimate load to failure, and site of failure were recorded for each specimen. The mean ultimate failure loads were 7-mm interference screw with cortical button augmentation, 237.8 ± 120.4 N; cortical button alone, 99.4 ± 16.9 N; 7-mm interference screw, 275.5 ± 56 N; 8-mm interference screw, 277.1 ± 42.1 N. All specimens failed through tendon failure at the screw-tendon-bone interface. The biomechanical performance of subpectoral biceps tenodesis with interference screw fixation was not improved with cortical button augmentation. In addition, cortical button fixation alone yielded a significantly lower ultimate load to failure compared with interference screws. Finally, the biomechanical performance of smaller-diameter interference screws with matching bone tunnels was not affected by interference screw diameter. Copyright © 2013 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Mosby, Inc. All rights reserved.

  17. Minimally invasive percutaneous plate fixation of distal tibia fractures.

    LENUS (Irish Health Repository)

    Bahari, Syah

    2007-10-01

    We report a series of 42 patients reviewed at a mean of 19.6 months after treatment of distal tibial and pilon fractures using the AO distal tibia locking plate with a minimally invasive percutaneous plate osteosynthesis (MIPPO) technique. Mean time to union was 22.4 weeks. All fractures united with acceptable alignment and angulation. Two cases of superficial infection were noted, with one case of deep infection. Mean SF36 score was 85 and mean AOFAS score was 90 at a mean of 19 months follow-up. We report satisfactory outcomes with the use of the AO distal tibia locking plate in treatment of unstable distal tibial fractures. Eighty-nine percent of the patients felt that they were back to their pre injury status and 95% back to their previous employment.

  18. Distal femoral osteotomy using a novel deformity reduction device.

    Science.gov (United States)

    Panichi, Enrico; Cappellari, Fulvio; Olimpo, Matteo; Piras, Lisa A; Radasch, Robert; Ferretti, Antonio; Peirone, Bruno

    2016-09-20

    Distal femoral osteotomy is a surgical procedure used to correct patellar luxation, secondary to a femoral deformity. A distal femoral osteotomy using the tibial plateau levelling osteotomy-jig to temporarily provide stability of the distal femoral osteotomy, maintaining limb alignment in the frontal and axial planes prior to internal plate fixation of the osteotomy, has been described. This report describes a novel jig named Deformity Reduction Device (DRD). This device was developed with the specific aim of increasing precision and predictability during corrective osteotomy execution in order to be consistent with the preoperative planning. The distal femoral osteotomy DRD-assisted procedure is described in detail, discussing the theoretical and practical principles of the application.

  19. Distal coronary hemoperfusion during percutaneous transluminal coronary angioplasty

    NARCIS (Netherlands)

    deMuinck, ED; denHeijer, P; vanDijk, RB; Crijns, HJGM; Hillige, HL; Lie, KI

    1996-01-01

    Distal coronary hemoperfusion during percutaneous transluminal coronary angioplasty (PTCA)-with an autoperfusion balloon or active system-facilitates prolonged balloon inflation. Prolonged inflations may tack up intimal dissections and improve the primary angioplasty result in complex lesions. Addit

  20. Genetics Home Reference: distal 18q deletion syndrome

    Science.gov (United States)

    ... PDF) Patient Support and Advocacy Resources (7 links) Alexander Graham Bell Association for the Deaf and Hard ... Pliszka SR, Gelfond JA, Hale DE, Cody JD. Mood disorders in individuals with distal 18q deletions. Am ...

  1. Symptomatic Venous Thromboembolism Following Fractures Distal to the Knee

    DEFF Research Database (Denmark)

    Wahlsten, Liv Riisager; Eckardt, Henrik; Lyngbæk, Stig

    2015-01-01

    BACKGROUND: Our aims were to determine the incidence of symptomatic deep venous thrombosis (DVT) and pulmonary embolism (PE) that required inpatient or outpatient treatment, and to identify specific risk factors associated with DVT/PE in patients who had undergone surgery for a fracture distal...... to the knee. METHODS: Using individual linkage of nationwide registries, we included all Danish patients who had undergone surgery for a fracture distal to the knee between 1999 and 2011. Patients were followed for 180 days from discharge. Event rates of DVT/PE were calculated, and significant risk factors...... following surgery for fractures distal to the knee; however, the risk was increased in the presence of a number of risk factors. This study suggests that specific groups of patients undergoing surgery for a fracture distal to the knee might benefit from postdischarge antithrombotic treatment....

  2. Distal protection devices during percutaneous coronary and carotid interventions

    OpenAIRE

    2001-01-01

    Abstract Distal embolization of particulate matter complicates percutaneous coronary and peripheral interventions more often than had been recognized until recently. A number of distal protection devices are under development. The PercuSurge GuardWire™ is a balloon occlusion thrombectomy device approved by the United States Food and Drug Administration for saphenous vein graft intervention. A number of filter devices utilize an expandable filter mounted on the angioplasty guidewire to facilit...

  3. Distal posterior inferior cerebellar artery aneurysm in a child

    Directory of Open Access Journals (Sweden)

    J. Francisco Salomão

    1992-06-01

    Full Text Available The case of a 7-year-old boy presenting with recurrent episodes of subarachnoid hemorrhage due to a distal posterior inferior cerebellar artery aneurysm (PICA, successfully operated, is reported.' The low incidence of intracranial aneurysms in the first decade of life and the rare occurrence of distal PICA aneurysms are unusual features of this case. The theories regarding the origin of intracranial berry aneurysms are discussed.

  4. Primary ciliogenesis requires the distal appendage component Cep123

    Directory of Open Access Journals (Sweden)

    James E. Sillibourne

    2013-04-01

    Primary cilium formation is initiated at the distal end of the mother centriole in a highly co-ordinated manner. This requires the capping of the distal end of the mother centriole with a ciliary vesicle and the anchoring of the basal body (mother centriole to the cell cortex, both of which are mediated by the distal appendages. Here, we show that the distal appendage protein Cep123 (Cep89/CCDC123 is required for the assembly, but not the maintenance, of a primary cilium. In the absence of Cep123 ciliary vesicle formation fails, suggesting that it functions in the early stages of primary ciliogenesis. Consistent with such a role, Cep123 interacts with the centriolar satellite proteins PCM-1, Cep290 and OFD1, all of which play a role in primary ciliogenesis. These interactions are mediated by a domain in the C-terminus of Cep123 (400–783 that overlaps the distal appendage-targeting domain (500–600. Together, the data implicate Cep123 as a new player in the primary ciliogenesis pathway and expand upon the role of the distal appendages in this process.

  5. [Epidemiology and management of isolated distal deep venous thrombosis].

    Science.gov (United States)

    Galanaud, J-P; Kahn, S R; Khau Van Kien, A; Laroche, J-P; Quéré, I

    2012-12-01

    Isolated distal deep-vein thromboses (DVT) are infra-popliteal DVT without involvement of proximal veins or pulmonary embolism (PE). They can affect deep calf (tibial anterior, tibial posterior, or peroneal) or muscular (gastrocnemius or soleal) veins. They represent half of all lower limbs DVT. Proximal and distal DVTs differ in terms of risk factor profile, proximal DVT being more frequently associated with chronic risk factors and distal DVT with transient ones. Their natural history (rate of spontaneous proximal extension) is debated leading to uncertainties on the need to diagnose and treat them with anticoagulant drugs. In the long term, the risk of venous thromboembolic recurrence is lower than that of proximal DVT and their absolute risk of post-thrombotic syndrome is unknown. French national guidelines suggest treating with anticoagulants for 6 weeks a first episode of isolated distal DVT provoked by a transient risk factor and treating for at least 3 months unprovoked or recurrent or active cancer-related distal DVT. The use of compression stockings use is suggested in case of deep calf vein thrombosis. Ongoing therapeutic trials should provide important data necessary to establish an evidence-based mode of care, especially about the need to treat distal DVT at low risk of extension with anticoagulants.

  6. Ultrasound shear wave elastography in assessment of muscle stiffness in patients with Parkinson's disease: a primary observation.

    Science.gov (United States)

    Du, Li-Juan; He, Wen; Cheng, Ling-Gang; Li, Shuo; Pan, Yue-Song; Gao, Jing

    The aim of this study was to assess the capability of ultrasound shear wave elastography (SWE) in evaluating the muscle stiffness in patients with Parkinson's diseases (PD). Ultrasound SWE of the longitudinal biceps brachii was performed on 46 patients with PD and 31 healthy controls from May 2013 to October 2013. The stiffness of the biceps brachii muscles measured with quantitative Young's modulus (kPa) was compared between the remarkably symptomatic arms and mildly symptomatic arms in the PD and between PD and controls with unpaired t test. The correlation between the Young's modulus of the biceps brachii measured by SWE and motion scores assessed by unified Parkinson's disease rating scale (UPDRS) part III was analyzed by Pearson's correlation coefficient. The reliability of SWE in assessment of biceps brachii stiffness was tested using intraclass correlation coefficient (ICC). The mean Young's modulus of biceps brachii in remarkably symptomatic arms, mildly symptomatic arms, and healthy controls was 59.94±20.91 kPa, 47.77±24.00 kPa, and 24.28±5.09 kPa, respectively. A significant difference in Young's modulus of biceps brachii was found between healthy controls and all PD patients (all PYoung's modulus of the biceps brachii and the motion score by UPDRS in patients with PD (r=0.646, P=.000). The ICC for interobserver and intraobserver variation in measuring Young's modulus of the biceps brachii with SWE was 0.74 (95% confidence interval 0.68-0.78) and 0.78 (95% confidence interval 0.75-0.82), respectively. SWE of the biceps brachii can be used as a quantitative assessment of muscle stiffness in the patients with PD. Copyright © 2016 Elsevier Inc. All rights reserved.

  7. Direct Lentiviral-Cyclooxygenase 2 Application to the Tendon-Bone Interface Promotes Osteointegration and Enhances Return of the Pull-Out Tensile Strength of the Tendon Graft in a Rat Model of Biceps Tenodesis: e98004

    National Research Council Canada - National Science Library

    Charles H Rundle; Shin-Tai Chen; Michael J Coen; Jon E Wergedal; Virginia Stiffel; Kin-Hing William Lau

    2014-01-01

      This study sought to determine if direct application of the lentiviral (LV)-cyclooxygenase 2 (COX2) vector to the tendon-bone interface would promote osteointegration of the tendon graft in a rat model of biceps tenodesis...

  8. Arthroplasty of the distal ulna distal in managing patients with post-traumatic disorders of the distal radioulnar joint: measurement of quality of life

    Directory of Open Access Journals (Sweden)

    Marcio Aurélio Aita

    2015-12-01

    Full Text Available ABSTRACT OBJECTIVE: To measure the quality of life and clinical-functional results from patients diagnosed with osteoarthrosis of the distal radioulnar joint who underwent surgical treatment using the technique of total arthroplasty of the ulna, with a total or partial Ascension(r prosthesis of the distal ulna. METHODS: Ten patients were evaluated after 12 months of follow-up subsequent to total or partial arthroplasty of the distal ulna. All of them presented post-traumatic osteoarthrosis and/or chronic symptomatic instability of the distal radioulnar joint. The study was prospective. Seven patients had previously undergone wrist procedures (two cases with Darrach, three with Sauvé-Kapandji and two with ligament reconstruction of the fibrocartilage complex and three presented fractures of the distal ulna that evolved with pain, instability and osteoarthrosis of the distal radioulnar joint. The following were assessed: quality of life (DASH scale; percentage degree of palm grip strength (kgf and pronosupination range of motion in relation to the unaffected side; pain (VAS; return to work; subjective evaluation of radiography; and complications. RESULTS: The patients presented a mean range of motion of 174.5° (normal side: 180°. Quality of life was analyzed by applying the DASH questionnaire and the mean value found was 5.9. The mean pain score using the VAS was 2.3. The mean degree of palm grip strength (kgf was 50.7, which represented 90.7% of the strength on the unaffected side. The complication rate was 10%: this patient presented slight dorsal instability of the ulna and persistent pain, and did not return to work. This patient is still being followed up in the outpatient clinic and occupational therapy sector, with little improvement. He does not wish to undergo a new procedure. The mean length of follow-up was 16.8 months, with a minimum of 10 and maximum of 36 months. CONCLUSION: This concept is subject to the test of time

  9. Arthroplasty of the distal ulna distal in managing patients with post-traumatic disorders of the distal radioulnar joint: measurement of quality of life☆

    Science.gov (United States)

    Aita, Marcio Aurélio; Ibanez, Daniel Schneider; Saheb, Gabriel Cunha Barbosa; Alves, Rafael Saleme

    2015-01-01

    Objective To measure the quality of life and clinical–functional results from patients diagnosed with osteoarthrosis of the distal radioulnar joint who underwent surgical treatment using the technique of total arthroplasty of the ulna, with a total or partial Ascension® prosthesis of the distal ulna. Methods Ten patients were evaluated after 12 months of follow-up subsequent to total or partial arthroplasty of the distal ulna. All of them presented post-traumatic osteoarthrosis and/or chronic symptomatic instability of the distal radioulnar joint. The study was prospective. Seven patients had previously undergone wrist procedures (two cases with Darrach, three with Sauvé–Kapandji and two with ligament reconstruction of the fibrocartilage complex) and three presented fractures of the distal ulna that evolved with pain, instability and osteoarthrosis of the distal radioulnar joint. The following were assessed: quality of life (DASH scale); percentage degree of palm grip strength (kgf) and pronosupination range of motion in relation to the unaffected side; pain (VAS); return to work; subjective evaluation of radiography; and complications. Results The patients presented a mean range of motion of 174.5° (normal side: 180°). Quality of life was analyzed by applying the DASH questionnaire and the mean value found was 5.9. The mean pain score using the VAS was 2.3. The mean degree of palm grip strength (kgf) was 50.7, which represented 90.7% of the strength on the unaffected side. The complication rate was 10%: this patient presented slight dorsal instability of the ulna and persistent pain, and did not return to work. This patient is still being followed up in the outpatient clinic and occupational therapy sector, with little improvement. He does not wish to undergo a new procedure. The mean length of follow-up was 16.8 months, with a minimum of 10 and maximum of 36 months. Conclusion This concept is subject to the test of time. Implantation of a prosthesis is a

  10. Blocking screws for the treatment of distal femur fractures.

    Science.gov (United States)

    Seyhan, Mustafa; Cakmak, Selami; Donmez, Ferdi; Gereli, Arel

    2013-07-01

    Intramedullary nailing is one of the most convenient biological options for treating distal femoral fractures. Because the distal medulla of the femur is wider than the middle diaphysis and intramedullary nails cannot completely fill the intramedullary canal, intramedullary nailing of distal femoral fractures can be difficult when trying to obtain adequate reduction. Some different methods exist for achieving reduction. The purpose of this study was determine whether the use of blocking screws resolves varus or valgus and translation and recurvatum deformities, which can be encountered in antegrade and retrograde intramedullary nailing. Thirty-four patients with distal femoral fractures underwent intramedullary nailing between January 2005 and June 2011. Fifteen patients treated by intramedullary nailing and blocking screws were included in the study. Six patients had distal diaphyseal fractures and 9 had distal diaphyseo-metaphyseal fractures. Antegrade nailing was performed in 7 patients and retrograde nailing was performed in 8. Reduction during surgery and union during follow-up were achieved in all patients with no significant complications. Mean follow-up was 26.6 months. Mean time to union was 12.6 weeks. The main purpose of using blocking screws is to achieve reduction, but they are also useful for maintaining permanent reduction. When inserting blocking screws, the screws must be placed 1 to 3 cm away from the fracture line to avoid from propagation of the fracture. When applied properly and in an adequate way, blocking screws provide an efficient solution for deformities encountered during intramedullary nailing of distal femur fractures. Copyright 2013, SLACK Incorporated.

  11. Autoxidation of oxymyoglobin with the distal (E7) glutamine.

    Science.gov (United States)

    Suzuki, T

    1987-08-05

    We reported previously that the distal(E7) histidine is replaced by glutamine in myoglobin from the shark, Galeorhinus japonicus. The amino-acid sequence of myoglobin from another shark, Heterodontus japonicus, has been determined. The myoglobin is composed of 148 residues, is acetylated at the N-terminus, and contains the distal(E7) histidine at position 59. Although the sequence homologies between G. japonicus, H. japonicus, and sperm-whale myoglobins were about 40-55%, their hydropathy profiles were very similar, indicating that they have a similar geometry in their globin folding. The autoxidation rates of the two shark oxymyoglobins were examined in 0.1 M buffer at 25 degrees C over pH range 4.5-11.5. The pH dependence for the autoxidation of H. japonicus myoglobin was very similar to that of sperm-whale myoglobin, although the rate was about 10-times higher over the pH range examined. In both myoglobins, autoxidation was largely accelerated by H+. On the other hand, the pH dependence of G. japonicus myoglobin, which has the distal glutamine in the place of histidine, was quite different from those of sperm-whale and H. japonicus myoglobins. One of the most remarkable features is the fact that the autoxidation rate is not enhanced with an increase in the concentration of H+ in the acidic range of pH, where the autoxidation of sperm-whale and H. japonicus myoglobins is most accelerated. This finding suggests that the distal(E7) histidine participates in the autoxidation reaction as a catalytic residue facilitating the movement of a catalytic proton.

  12. Recent advances in the management of distal ulcerative colitis

    Institute of Scientific and Technical Information of China (English)

    Ioannis; E; Koutroubakis

    2010-01-01

    The most frequent localization of ulcerative colitis(UC) is the distal colon.In treating patients with active distal UC,efficacy and targeting of the drug to the distal colon are key priorities.Oral and rectal 5-aminosalicylic acid(5-ASA) preparations represent the first line therapy of mild-to-moderate distal UC for both induction and maintenance treatment.It has been reported that many UC patients are not adherent to therapy and that noncompliant patients had a 5-fold risk of experiencing a relapse.These findings led to the introduction of oncedaily oral regimens of 5-ASA as better therapeutic options in clinical practice due to improved adherence.New formulations of mesalazine,including the multimatrix delivery system,and mesalazine granules,which allow once-daily administration,have been developed.They have been demonstrated to be efficacious in inducing and maintaining remission in mild-to-moderate distal UC in large clinical trials.However,existing data for distal UC are rather insufficient to make a comparison between new and classical 5-ASA formulations.It seems that the new formulations are at least as effective as classical oral 5-ASA formulations.Other treatment options,in the case that 5-ASA therapy is not effective,include systemic corticosteroids,thiopurines(azathioprine or 6-mercaptopurine),cyclosporine,infliximab and surgery.The combination of a prompt diagnostic work-up,a correct therapeutic approach and an appropriate follow-up schedule is important in the management of patients with distal UC.This approach can shorten the duration of symptoms,induce a prolonged remission,improve patient’s quality of life,and optimize the use of health resources.

  13. ARTHROSCOPIC CORRECTION OF THE INJURIES OF THE COMPLEX «TENDON OF THE BICEPS LONG HEAD - THE ARTICULAR LIP» IN TREATMENT OF PATIENTS WITH FULL-LAYER RUPTURES OF THE ROTATOR CUFF

    Directory of Open Access Journals (Sweden)

    S. Y. Dokolin

    2013-01-01

    Full Text Available Damage of the long head of the biceps at the place of attachment to the articular tubercle supraglenoidal lip of shoulder, to the entrance and throughout intertubercle furrows are common causes of pain and dysfunction of the shoulder joint. At the same clinical manifestations of the morphology of such lesions may be different. The current literature discusses various options of surgical correction of the biceps injury. Variety of methods of surgical treatment and the lack of consensus in support of their application in different patients in different types of injuries were the basis for the present study. A prospective analysis of the functional results of surgical treatment of the 34 - year’s patients with associated rotator cuff (SSP+ISP+SSC+ and the tendon of the biceps muscle in age from 34 to 75 years. Options for surgical correction of the damaged part of the biceps were: biceps tenotomy, biceps tenotomy with intraarticular tenodez of the shoulder to the head before entering intertubercle furrow, biceps tenotomy and extraarticular subpectorialtenodez to the proximal humerus is intertubercle interferrent screw groove, as well as its attachment to the tendon suture large pectoral muscle. Choice of surgical approach depended on the patient's age, level of daily physical activity, morphology and localization of lesions. The best results were obtained when the extra-articular subpectorialtenodez of long head of the biceps to the proximal humerus interferrent screw and suture fixation to the pectoralis major muscle, the average follow-up was 16,6 ± 4,7 months.

  14. Strength training's chronic effects on muscle architecture parameters of different arm sites.

    Science.gov (United States)

    Matta, Thiago; Simão, Roberto; de Salles, Belmiro Freitas; Spineti, Juliano; Oliveira, Liliam Fernandes

    2011-06-01

    Strength training generates alterations in muscle geometry, which can be monitored by imaging techniques as, for example, the ultrasound (US) technique. There is no consensus about the homogeneity of hypertrophy in different muscle sites. Therefore, the purpose of this study was to compare the muscle thickness (MT) and pennation angle (PA) in 3 different sites (50, 60, and 70% of arm length) of the biceps brachii and triceps brachii after 12 weeks of strength training. Forty-nine healthy untrained men were divided into 2 groups: Training Group ([TG, n = 40] 29.90 ± 1.72 years; 79.53 ± 11.84 kg; 173 ± 0.6 cm) and Control Group (n = 9 25.89 ± 3.59 years; 73.96 ± 9.86 kg; 171 ± 6 cm). The TG underwent a strength training program during 12 weeks, which included exercises such as a free-weight bench press, machine lat pull-down, triceps extension in lat pull-down, and standing free-weight biceps curl with a straight bar. A US apparatus was used to measure the PA and MT at the 3 sites. The maximal voluntary isometric contraction (MVC) test was conducted for each muscle group. After 12 weeks of training, a significant difference was observed between MT in biceps brachii, with an improvement of 12% in the proximal site, whereas the distal site increased by only 4.7% (p MVC increased significantly for both muscle groups. The results indicated that the strength training program was efficient in promoting hypertrophy in both muscles, but with dissimilar responses of the pennated and fusiform muscle architecture at different arm sites.

  15. Ejecta emplacement: from distal to proximal

    Science.gov (United States)

    Artemieva, N.

    2008-09-01

    Introduction Most part of impact ejecta is deposited ballistically at some distance from a crater, defined by ejection velocity V and ejection angle α: d=v2sinα/g. In case of giant impacts, planetary curvature should be taken into account [1]. Combined with ejecta scaling [2], these relations allow to define ejecta thickness as a function of distance. Ejecta from large craters are deposited at velocity high enough to mobilize substrate material and to thicken ejecta deposits [3]. Ballistic approximation is valid for airless bodies (if impact vaporization is not vast) or for proximal ejecta of large impact craters, where ejecta mass per unit area is substantially greater than the mass of involved vapor/atmosphere (M-ratio). Deposition of distal ejecta, in which ejecta mass is negligible compared to the atmosphere, may be also treated in a simplified manner, i.e. as 1) passive motion of ejected particles within an impact plume and 2) later, as sedimentation of particles in undisturbed atmosphere (equilibrium between gravity and drag). In all intermediate M-ratio values, impact ejecta move like a surge, i.e. dilute suspension current in which particles are carried in turbulent flows under the influence of gravity. Surges are well-known for near-surface explosive tests, described in detail for volcanic explosions (Plinian column collapse, phreato-magmatic eruption, lateral blast), and found in ejecta from the Chicxulub [4] and the Ries [5]. Important aspects of surge transport include its ability to deposit ejecta over a larger area than that typical of continuous ballistic ejecta and to create multiple ejecta layers. Numerical model Two-phase hydrodynamics. Surges should be modeled in the frame of two-phase hydrodynamics, i.e. interaction between solid/molten particles and atmospheric gas/impact vapor should be taken into account. There are two techniques of solving equations for dust particle motion in a gas flow. The first one describes solid/molten particles as a

  16. CMB B-mode Polarization Measurements and constraints on Primordial Gravitational Waves from the BICEP/Keck Program at South Pole

    Science.gov (United States)

    Kovac, John; Bicep/Keck Collaboration

    2017-01-01

    The BICEP/Keck Array cosmic microwave background (CMB) polarization experiments located at the South Pole are a series of small-aperture refracting telescopes designed to probe the degree-scale B-mode signature of primordial gravitational waves. These highly-targeted experiments have produced the world's deepest maps of CMB polarization, leading to the most stringent constraints on the tensor-to-scalar ratio to date: r r r < 0 . 01 and below within the next several years.

  17. Geometric morphometric analysis reveals sexual dimorphism in the distal femur.

    Science.gov (United States)

    Cavaignac, Etienne; Savall, Frederic; Faruch, Marie; Reina, Nicolas; Chiron, Philippe; Telmon, Norbert

    2016-02-01

    An individual's sex can be determined by the shape of their distal femur. The goal of this study was to show that differences in distal femur shape related to sexual dimorphism could be identified, visualized, and quantified using 3D geometric morphometric analysis. Geometric morphometric analysis was carried out on CT scans of the distal femur of 256 subjects living in the south of France. Ten landmarks were defined on 3D reconstructions of the distal femur. Both traditional metric and geometric morphometric analyses were carried out on these bone reconstructions; these analyses identified trends in bone shape in sex-based subgroups. Sex-related differences in shape were statistically significant. The subject's sex was correctly assigned in 77.3% of cases using geometric morphometric analysis. This study has shown that geometric morphometric analysis of the distal femur is feasible and has revealed sexual dimorphism differences in this bone segment. This reliable, accurate method could be used for virtual autopsy and be used to perform diachronic and interethnic comparisons. Moreover, this study provides updated morphometric data for a modern population in the south of France. Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.

  18. Far cortical locking screws in distal femur fractures.

    Science.gov (United States)

    Adams, John D; Tanner, Stephanie L; Jeray, Kyle J

    2015-03-01

    Distal femur fractures routinely heal by secondary bone healing, which relies on interfragmentary motion. Periarticular locking plates are commonly used for fixation in distal femur fractures but are associated with a high nonunion rate, likely due to the stiffness of the constructs. Far cortical locking (FCL) screws are designed to allow micromotion at the near cortex while maintaining purchase in only the far cortex. Although clinical data are limited, these screws have been shown in biomechanical studies to provide excellent interfragmentary motion, and animal models have shown increased callus formation compared with traditional locking screws. The purpose of this study was to examine the clinical effects that FCL screws have on healing in distal femur fractures treated with locked constructs. In this retrospective case series, 15 patients with a distal femur fracture treated with MotionLoc screws (Zimmer, Warsaw, Indiana) were analyzed. Serial radiographs were evaluated for callus presence and time to union. All fractures were either 33-A3 or 33-C2 according to the AO classification system, and 5 (33%) were open. Bone loss was recorded in 2 patients. There were no nonunions, and average time to union was 24 weeks. There were no implant failures, and all 5 open fractures, including the 2 with bone loss, healed without intervention. There was 1 reoperation due to painful hardware. Although this is a small case series, these results are promising. Far cortical locking screws may provide the answer to the high nonunion rate associated with distal femur fractures treated with traditional locked constructs.

  19. Influence of distal tibiofibular synostosis on ankle function

    Institute of Scientific and Technical Information of China (English)

    HOU Zhen-hai; ZHOU Ji-hong; YE Hong; SHI Jian-guo; ZHENG Long-bao; YAO Jun; NI Zhi-ming

    2009-01-01

    Objective: To study the influence distal tibiofibular synostosis on ankle function.Methods: From October 1998 to October 2004,a total of 281 consecutive patients underwent operations because of ankle fractures or distal fractures of the tibia and fibula.Distal tibiofibular synostosis occurred after operation in 8 Patients.The duration of follow-up averaged 20.6 months (14-44 months).The ankle function was assessed on the basis of functional rating system described by Mazur.1Results: According to Mazur's ankle evaluation system,4 patients achieved an excellent result,2 a good result and 2 a fair result.The dorsiflexion of the synostosis ankle reduced by 8.26 degrees as compared with that of the contralateral ankle.and there was little influence on the plantar flexion.All the Patients had a normal gait.Conclusion: The distal tibiofibular synostosis after the operation of ankle fractures or distal fractures of the tibia and fibula usually gives rise to few symptoms and needs no specific treatment.

  20. Accuracy of distal radius positioning using an anatomical plate.

    Science.gov (United States)

    Vroemen, Joy C; Dobbe, Johannes G G; Sierevelt, Inger N; Strackee, Simon D; Streekstra, Geert J

    2013-04-01

    Over the past decade, several anatomical plates have been introduced to improve the result of open reduction and internal fixation of the distal radius. Using 3-dimensional imaging techniques, the authors studied the accuracy and reproducibility of distal radius positioning using anatomical plates.Distal radius fractures and the correction of these fractures were simulated with plastic bone models of radii. The authors simulated a defect by removing an arbitrary wedge shape from the artificial radii. Two surgeons corrected these fractures by placing 2 anatomical plate types according to the plate manufacturers' instructions. The residual positioning errors of the distal segment in relation to the unaffected radii were determined using 3-dimensional imaging and were compared with naturally occurring bilateral radius differences in healthy individuals. In many cases, positioning does not agree with differences based on bilateral asymmetry in healthy patients.This study indicated the accuracy of anatomical plates. Positioning an anatomical plate may lead to considerable residual errors in individual patients. Volar distal radius plate shapes differ among plate manufacturers. Therefore, one plate may perform better than another in an individual.

  1. OPTIMAL DISTAL SCREW ALIGNMENT IN THE GAMMA NAIL

    Institute of Scientific and Technical Information of China (English)

    Ching-KongChao; Chun-ChingHsiao; Po-QuangChen

    2002-01-01

    The effect of stress distribution due to the changes of the distal screw alignment in relation to the Gamma nail and the femoral shaft is thoroughly studied in this paper. Failure of the Gamma nail composite occurs through the cranial aperture of the distal screws and the insertion hole for the lag screw due to nonunion, delayed-union and continued weight-bearing. A three-dimensional finite element model was used to study the fractured femur, the Gamma nail, the lag screw and the distal locking screws. The first and the second distal screws were inserted into the Gamma nail in four different configurations. We found that the stress of the Gamma nail composite was substantially reduced with the two screws configured in the anterior to posterior direction. This alignment can bear greater loading in the more demanding fracture types. In the subtrochanteric fracture or the comminuted fractures at the proximal femur, the optimal alignment of the two distal screws was in the anterior to posterior direction.

  2. A Comparison of Gluteus Maximus, Biceps Femoris, and Vastus Lateralis Electromyographic Activity in the Back Squat and Barbell Hip Thrust Exercises.

    Science.gov (United States)

    Contreras, Bret; Vigotsky, Andrew D; Schoenfeld, Brad J; Beardsley, Chris; Cronin, John

    2015-12-01

    The back squat and barbell hip thrust are both popular exercises used to target the lower body musculature; however, these exercises have yet to be compared. Therefore, the purpose of this study was to compare the surface electromyographic (EMG) activity of the upper and lower gluteus maximus, biceps femoris, and vastus lateralis between the back squat and barbell hip thrust. Thirteen trained women (n = 13; age = 28.9 years; height = 164 cm; mass = 58.2 kg) performed estimated 10-repetition maximums (RM) in the back squat and barbell hip thrust. The barbell hip thrust elicited significantly greater mean (69.5% vs 29.4%) and peak (172% vs 84.9%) upper gluteus maximus, mean (86.8% vs 45.4%) and peak (216% vs 130%) lower gluteus maximus, and mean (40.8% vs 14.9%) and peak (86.9% vs 37.5%) biceps femoris EMG activity than the back squat. There were no significant differences in mean (99.5% vs 110%) or peak (216% vs 244%) vastus lateralis EMG activity. The barbell hip thrust activates the gluteus maximus and biceps femoris to a greater degree than the back squat when using estimated 10RM loads. Longitudinal training studies are needed to determine if this enhanced activation correlates with increased strength, hypertrophy, and performance.

  3. Evaluation of the clinical-functional results from repairing extensive rotator cuff injury with inclusion of the tendon of the long head of the biceps

    Directory of Open Access Journals (Sweden)

    Roberto Yukio Ikemoto

    2013-04-01

    Full Text Available OBJECTIVES: To assess the outcomes of the arthroscopic margin convergence of the posterior cuff to the biceps tendon. METHODS: From October 2003 to December 2007, 20 patients with massive rotator cuff tear which include the rotator interval were treated with arthroscopic margin convergence of the posterior cuff to biceps tendon. Sixteen patients were female and four were male. The mean age was 58.95 years old. The dominant side was affected in 16 cases (80%. The outcomes were analysed according to the UCLA Score with a minimum follow-up period of two years. RESULTS: The UCLA score improved, on average, 14 points (p < 0.001. Six patients had excellent results; nine good; three fair and two poor results. The mean improvement of forward flexion was 33º (p < 0.001, 3º of external rotation (p < 0.396 and two vertebral levels for internal rotation (p < 0.025. CONCLUSION: The arthroscopic margin convergence of the posterior cuff to the biceps tendon leads to satisfactory results.

  4. Management of radionecrosis of the vulva and distal vagina

    Energy Technology Data Exchange (ETDEWEB)

    Roberts, W.S.; Hoffman, M.S.; LaPolla, J.P.; Ruas, E.; Fiorica, J.V.; Cavanagh, D. (Univ. of South Florida, Tampa (USA))

    1991-05-01

    Twelve patients were seen between January 1983 and June 1989 with the clinical diagnosis of radionecrosis of the vulva or distal vagina. Seven patients received radiation for vulvar cancer, three for distal vaginal cancer, and two for recurrent endometrial cancer. No patient healed spontaneously and the mean delay in surgical therapy was 8.5 months. The radionecrotic site was treated with local therapy, radical local excision (with or without colostomy), or exenteration. The operative defect was closed primarily in three patients and covered with local flaps or myocutaneous flaps in seven patients. The two patients with local care still have radionecrotic ulcers. One of three patients who were closed primarily continues to have an ulcer. All other patients have healed satisfactorily except one who died after two attempts to correct the problem. Radionecrosis of the vulva and distal vagina should generally be treated surgically.

  5. Two-stitch technique for distal shaft hypospadias repair.

    Science.gov (United States)

    Herman, Oscar; Heller, Lior; Dorenbaum, Arye; Westreich, Melvyn

    2002-02-01

    The authors present a new technique for distal shaft hypospadias repair using a flip flap fashioned with only two stitches. In raising the flap, the tissues lateral and proximal to the flap are undermined but there is no undermining beneath the flap. The flap is sutured up to the glans with two 4-0 Vicryl sutures. No sutures are placed at the lateral edges of the flap to create the "tube" of the neo-urethra, and no postoperative urinary drainage is used. Thirty-three children with distal shaft hypospadias underwent the "two-stitch" flip flap operation. The complications were one fistula and one case of urinary retention. The technique is an easy method for reconstructing distal penile hypospadias with a very low rate of complications and is suitable for an outpatient surgical setting.

  6. Septic arthritis of the distal interphalangeal joint in 12 horses.

    Science.gov (United States)

    Honnas, C M; Welch, R D; Ford, T S; Vacek, J R; Watkins, J P

    1992-01-01

    The medical records of 12 horses with septic arthritis of a distal interphalangeal joint were reviewed to determine clinical features and response to treatment. Sepsis was caused by trauma or an injection that resulted in an open or contaminated distal interphalangeal joint. All horses were severely lame. Treatment included broad-spectrum parenterally administered antimicrobial drugs (ten horses), percutaneous through-and-through joint lavage (eight horses), indwelling drains (three horses), immobilization of the limb in a cast (three horses), intraarticular injection of sodium hyaluronate (one horse), intraarticular injection of antimicrobial drugs (five horses), curettage of the distal phalanx (one horse), and cancellous bone grafting to promote fusion (one horse). Five horses were euthanatized. Ankylosis of the affected joint developed in five horses, four of which are pasture sound. Two horses treated medically are sound although one underwent subsequent palmar digital neurectomy for treatment of navicular syndrome.

  7. Flexor Tendon Ruptures After Distal Scaphoid Excision for Scaphotrapeziotrapezoid Osteoarthritis.

    Science.gov (United States)

    Deren, Matthew E; Mitchell, Charles H; Weiss, Arnold-Peter C

    2017-09-01

    Distal scaphoid excision is one treatment option for osteoarthritis of the scaphotrapeziotrapezoid (STT) joint following failure of conservative measures. Potential complications of this procedure include injury to the carpal ligaments, cartilage, and radial artery. A single case was identified by the senior author, and the medical record was reviewed for surgical notes, progress notes, and radiographs. A 68-year-old male sustained ruptures of the flexor digitorum superficialis (FDS) and flexor digitorum profundus to the index finger 3 years following a distal scaphoid excision for symptomatic STT osteoarthritis. He required a flexor tendon reconstruction using the remaining FDS tendon for graft incorporated with a Pulvertaft weave. His midcarpal pain continued after recovery of his index finger function, eventually requiring a 4-corner fusion of the wrist. Flexor tendon rupture is a previously unreported complication of distal scaphoid excision for STT arthritis.

  8. [Diagnostic of group A streptococcal blistering distal dactylitis].

    Science.gov (United States)

    Cohen, R; Levy, C; Cohen, J; Corrard, F; Deberdt, P; Béchet, S; Bonacorsi, S; Bidet, Ph

    2014-11-01

    Blistering distal dactylitis is a distinct clinical entity, generally due to S. pyogenes, unfrequently reported. Characteristically, blistering distal dactylitis is described as a localized infection involving the distal phalanx of the digits, and it usually presents as a fluid-filled blister. Between October 2009 and June 2014, 69 children (median age: 60 months, extremes: 0,6-176) were enrolled. The sensitivity of GAS rapid antigen detection test was 97 % (CI 95 %: 83-100 %), the specificity was 76 % (CI 95 %: 60-89 %), the negative predictive value was 97 % (CI 95 %: 83-100 %), and the positive predictive value 76 % (CI 95 %: 60-89 %). All patients with a positive GAS rapid antigen test were treated with antibiotics (amoxicillin essentially) and cured without surgery.

  9. Transphyseal separation of the distal humerus in newborns

    Directory of Open Access Journals (Sweden)

    Cosimo Gigante

    2017-06-01

    Full Text Available Obstetric traumatic separation of the distal humeral epiphysis is a very uncommon injury, which presents a diagnostic challenge. These case serials reviewed the functional outcomes of 5 patients who had sustained a fracture-separation of the distal humeral epiphysis at birth. The diagnosis was made at a mean time of 40.8 h after delivery. All the patients were treated with gentle close manipulation, reduction under fluoroscopy and above-elbow cast application. After discharge, the patients were followed up for a mean of 30 months. Clinico-radiological results were excellent in four patients. One case necessitated closed reduction and percutaneous K-wire fixation at one week follow-up due to failed reduction. Cubitusvarus deformity was the only complication noted in 1 case. Good functional outcome can be expected in newborns with fracture-separation of the distal humeral epiphysis wherein the physis is anatomically reduced.

  10. Kissing aneurysms of the distal anterior cerebral artery.

    Science.gov (United States)

    Choi, Chan-Young; Han, Seong-Rok; Yee, Gi-Taek; Lee, Chae-Heuck

    2011-02-01

    Kissing aneurysms, a particular type of multiple aneurysm are rare. A kissing aneurysms was identified at the distal anterior cerebral artery (ACA) in a 59-year-old male patient diagnosed with subarachnoid hemorrhage (SAH). The use of three-dimensional intracranial CT angiograms revealed that kissing aneurysms (that is, an aneurysm with a bilateral symmetrical mirror image) were located at the distal ACA and diffuse SAH in basal, sylvian, and interhemispheric cisterns. Both conventional carotid angiograms showed that both distal ACA aneurysms were seen separately on both internal carotid angiograms. Two aneurysms were observed simultaneously on carotid compression of either side. Some particular cautions required in diagnosing and treating kissing aneurysms are discussed, together with a literature review. Copyright © 2010. Published by Elsevier Ltd.

  11. The direct lateral approach to the distal tibia and fibula: a single incision technique for distal tibial and pilon fractures.

    Science.gov (United States)

    Femino, John E; Vaseenon, Tanawat

    2009-01-01

    Distal tibia fractures remain difficult injuries to treat when fracture displacement precludes non-operative treatment. Different methods of treatment including limited internal fixation with external fixation, as well as open reduction and internal fixation have been recommended. Open reduction and internal fixation is often favored for the improved ability to anatomically reduce displaced fractures, particularly articular fractures. However, wound complications due to the associated trauma to the fragile soft tissue envelope in this region continue to be a significant concern.The authors present a surgical approach for open reduction and fixation of distal tibia and fibula fractures through a single lateral incision, which respects the angiosomes of the distal leg and ankle. This can, in some cases, resolve the need to delay ORIF of the tibia since the incision is essentially the same as that used for the immediate ORIF of fibula fractures, which is commonly used in the staged treatment of distal tibial and plafond fractures. This approach can be extended proximally and distally to allow treatment of other injuries about the ankle and hindfoot. Illustrative cases are provided.

  12. Reverse telescoping in distal skarns at Campiglia Marittima (Italy)

    Science.gov (United States)

    Vezzoni, Simone; Dini, Andrea; Rocchi, Sergio

    2014-05-01

    Skarn deposits commonly results from the metasomatic alteration of a rock, usually carbonate-rich, by infiltration of hydrothermal fluids. Most carbonate-hosted skarn deposits show a direct spatial relationship with magmatic intrusions and an intimate relationship with porphyry copper deposits. Their primary mineralogical and geochemical features indicate metasomatism by high-temperature magmatic fluids. Conversely, many distal Pb-Zn-Ag skarns pose an important challenge because there is no apparent association with magmatic intrusions and external, meteoric and/or basinal fluids should become increasingly dominant with increasing distance from the igneous source. Nevertheless recent investigation of distal skarn deposits indicates that ore-forming fluids match the composition of proximal magmatic fluids in granitoid-related mineral deposits. Besides that metal producer (Pb, Zn, Ag, Cu, Fe, W, Sn), skarn deposits can be key to understanding fluid dynamics at the periphery of magmatic-hydrothermal systems, unraveling pathways to hidden ore deposits (e.g porphyry copper). In this scenario, research on distal skarns opens new perspectives for deep mineral exploration and/or modeling of intrusion centered geothermal systems, because they should represent the outer limit of the hydrothermal system dominated by magmatic aqueous fluids. Here we present exceptional evidences from a distal Pb-Zn-Ag skarn deposit in Campiglia Marittima, Italy, where the magma, after having released the metasomatic fluids, fled up chasing its own fluid stream and invading large pockets of the newly formed skarn bodies at shallower level. Detailed underground mapping and petrologic data indicate that, after the formation of a typical distal Pb-Zn-Ag skarn, the intrusion of the parent magma produced prograde reactions in the skarn silicates, mobilization of the Pb-Zn-Ag sulfides and precipitation of a new Cu-Fe sulfide assemblage. This is a very unusual case of reverse telescoping during which

  13. Unstable Distal Radius Fractures Treated by Volar Locking Anatomical Plates

    Science.gov (United States)

    Jose, Anto; Deniese, Pascal Noel; Babu, Abey Thomas; Rengasamy, Kanagasabai; Najimudeen, Syed

    2017-01-01

    Introduction Fracture of the distal end of radius represents the most common fracture of the upper extremity accounting for 16-20% of all fractures. Plating is now emerging as the gold standard for management of distal radius fractures due to increased rate of complications such as malunion, subluxation/dislocation of distal radio-ulnar joint or late collapse of fracture. Procedures such as closed reduction and cast immobilization, ligamentotaxis with external fixator and percutaneous pin fixation are no longer acceptable. Aim The purpose of the study was to evaluate the functional and radiological outcome of unstable distal radius fractures treated with the volar locking plate. Materials and Methods We reviewed 53 patients from January 2011 to December 2015, treated for unstable distal radius fractures using a volar locking compression plate. Standard radiographic and clinical assessment after 12 months (range 12-16 months) were measured and final functional and radiological outcome were assessed using the Modified Mayo wrist scoring system and Sarmiento’s modification of Lindstorm criteria respectively. Results There were 42 males and 11 females with an average age of 39.12±31.78 years (18-71 years). At the end of 12 months, 36 patients had an excellent radiological outcome and 10 patients had good radiological outcome as per Sarmiento’s modification of Lindstorm criteria. Eleven patients had an excellent functional outcome and 26 patients had a good functional outcome as per modified Mayo wrist scoring system. There was one case of superficial wound infection which subsided with intravenous antibiotics. Conclusion The volar locking plate fixation helps in early mobilization of the wrist, restores anatomy, allows early return to function, prevents secondary loss of reduction and hence is an effective treatment for unstable fractures of the distal radius. PMID:28274009

  14. BICEP2 / Keck Array VI: Improved Constraints On Cosmology and Foregrounds When Adding 95 GHz Data From Keck Array

    CERN Document Server

    Array, Keck; Ade, P A R; Ahmed, Z; Aikin, R W; Alexander, K D; Barkats, D; Benton, S J; Bischoff, C A; Bock, J J; Bowens-Rubin, R; Brevik, J A; Buder, I; Bullock, E; Buza, V; Connors, J; Crill, B P; Duband, L; Dvorkin, C; Filippini, J P; Fliescher, S; Grayson, J; Halpern, M; Harrison, S; Hilton, G C; Hui, H; Irwin, K D; Karkare, K S; Karpel, E; Kaufman, J P; Keating, B G; Kefeli, S; Kernasovskiy, S A; Kovac, J M; Kuo, C L; Leitch, E M; Lueker, M; Megerian, K G; Netterfield, C B; Nguyen, H T; O'Brient, R; Ogburn, R W; Orlando, A; Pryke, C; Richter, S; Schwarz, R; Sheehy, C D; Staniszewski, Z K; Steinbach, B; Sudiwala, R V; Teply, G P; Thompson, K L; Tolan, J E; Tucker, C; Turner, A D; Vieregg, A G; Weber, A C; Wiebe, D V; Willmert, J; Wong, C L; Wu, W L K; Yoon, K W

    2016-01-01

    We present results from an analysis of all data taken by the BICEP2 & Keck Array CMB polarization experiments up to and including that taken during the 2014 observing season. This includes the first Keck Array observations at 95 GHz. The maps reach a depth of 50 nK deg in Stokes $Q$ and $U$ in the 150 GHz band and 127 nK deg in the 95 GHz band. We take auto- and cross-spectra between these maps and publicly available maps from WMAP and Planck at frequencies from 23 GHz to 353 GHz. An excess over lensed-LCDM is detected at modest significance in the 95x150 $BB$ spectrum, and is consistent with the dust contribution expected from our previous work. No significant evidence for synchrotron emission is found in spectra such as 23x95, or for dust/sync correlation in spectra such as 23x353. We take the likelihood of all the spectra for a multi-component model including lensed-LCDM, dust, synchrotron and a possible contribution from inflationary gravitational waves (as parametrized by the tensor-to-scalar ratio $...

  15. BICEP2 / Keck Array VIII: Measurement of gravitational lensing from large-scale B-mode polarization

    CERN Document Server

    Array, The Keck; Ade, P A R; Ahmed, Z; Aikin, R W; Alexander, K D; Barkats, D; Benton, S J; Bischoff, C A; Bock, J J; Bowens-Rubin, R; Brevik, J A; Buder, I; Bullock, E; Buza, V; Connors, J; Crill, B P; Duband, L; Dvorkin, C; Filippin, J P; Fliescher, S; Grayson, J; Halpern, M; Harrison, S; Hildebrandt, S R; Hilton, G C; Hui, H; Irwin, K D; Kang, J; Karkare, K S; Karpel, E; Kaufman, J P; Keating, B G; Kefeli, S; Kernasovskiy, S A; Kovac, J M; Kuo, C L; Leitch, E M; Lueker, M; Megerian, K G; Namikawa, T; Netterfield, C B; Nguyen, H T; O'Brient, R; Ogburn, R W; Orlando, A; Pryke, C; Richter, S; Schwarz, R; Sheehy, C D; Staniszewski, Z K; Steinbach, B; Sudiwala, R V; Teply, G P; Thompson, K L; Tolan, J E; Tucker, C; Turner, A D; Vieregg, A G; Weber, A C; Wiebe, D V; Willmert, J; Wong, C L; Wu, W L K; Yoon, K W

    2016-01-01

    We present measurements of polarization lensing using the 150 GHz maps which include all data taken by the BICEP2 & Keck Array CMB polarization experiments up to and including the 2014 observing season (BK14). Despite their modest angular resolution ($\\sim 0.5^\\circ$), the excellent sensitivity ($\\sim 3\\mu$K-arcmin) of these maps makes it possible to directly reconstruct the lensing potential using only information at larger angular scales ($\\ell\\leq 700$). From the auto-spectrum of the reconstructed potential we measure an amplitude of the spectrum to be $A^{\\phi\\phi}_{\\rm L}=1.15\\pm 0.36$ (Planck $\\Lambda$CDM prediction corresponds to $A^{\\phi\\phi}_{\\rm L}=1$), and reject the no-lensing hypothesis at 5.8$\\sigma$, which is the highest significance achieved to date using EB lensing estimator. Taking the cross-spectrum of the reconstructed potential with the Planck 2015 lensing map yields $A^{\\phi\\phi}_{\\rm L}=1.13\\pm 0.20$. These direct measurements of $A^{\\phi\\phi}_L$ are consistent with the $\\Lambda$CDM...

  16. Tenotomy or tenodesis for the long head of biceps lesions in shoulders: a systematic review and meta-analysis.

    Directory of Open Access Journals (Sweden)

    Heng'an Ge

    Full Text Available Both tenotomy and tenodesis have been widely used for the treatment of long head of biceps tendon (LHBT lesions, but the optimal strategy remains considerably controversial. In this meta-analysis of published studies, we compared the results of the two procedures.A literature search that compared tenotomy with tenodesis was performed using MEDLINE, and Embase until August 2014. A total of 7 studies reporting data on 622 subjects were included. Study quality was evaluated using the PEDro critical appraisal tool and the NO quality assessment tool.Data synthesis showed higher functional outcomes, a lower complication rate, and longer surgical time in patients managed with tenodesis compared to tenotomy (Constant score, P = 0.02; Popeye sign, P < 0.001; cramp pain, P = 0.04; surgical time, P < 0.001, respectively.This meta-analysis indicates that tenodesis results in better arm function and lower incidences of cramp pain and Popeye sign in LHBT lesions, while the procedure required longer surgical time compared to tenotomy. More sufficiently powered studies would be required to further determine the optimal strategy.

  17. Influence of extended aging on beef quality characteristics and sensory perception of steaks from the biceps femoris and semimembranosus.

    Science.gov (United States)

    Colle, M J; Richard, R P; Killinger, K M; Bohlscheid, J C; Gray, A R; Loucks, W I; Day, R N; Cochran, A S; Nasados, J A; Doumit, M E

    2016-09-01

    The objective was to determine the influence of post-fabrication aging (2, 14, 21, 42, and 63days) on beef quality characteristics and consumer sensory perception of biceps femoris (BF) and semimembranosus (SM) steaks. Lipid oxidation and aerobic plate counts increased (P<0.05) with longer aging periods and retail display times. An aging period by day of retail display interaction (P<0.05) was observed for a* and b* values of the BF and SM. Warner-Bratzler shear force values decreased (P<0.05) with longer aging for the SM, while no difference was observed for the BF. Consumer panel results revealed that longer aging periods increased (P<0.05) acceptability of the SM, tenderness of both muscles, and tended to increase (P=0.07) juiciness of the SM. Our results show that extended aging reduces retail color stability yet has positive effects on consumer perception of tenderness of both muscles and overall acceptability of the SM.

  18. Traumatisk distal humerus-epifysiolyse hos nyfødt

    DEFF Research Database (Denmark)

    Al-Aubaidi, Zaid; Nielsen, Keld Daubjerg

    2010-01-01

    Traumatic distal humerus epiphysiolysis (TDHE) is a rare injury in infants with an incidence of about 1:35,000 births. It is primarily a birth injury, but it is also seen in cases of battered child syndrome. Because of its rare occurrence and the diagnostic difficulties, the lesion may be overloo......Traumatic distal humerus epiphysiolysis (TDHE) is a rare injury in infants with an incidence of about 1:35,000 births. It is primarily a birth injury, but it is also seen in cases of battered child syndrome. Because of its rare occurrence and the diagnostic difficulties, the lesion may...

  19. Modified distal shoe appliance--fabrication and clinical performance.

    Science.gov (United States)

    Gujjar, Kumar Raghav; Indushekar, K R; Amith, H V; Sharma, Shefali Li

    2012-01-01

    When the primary second molar is prematurely lost, mesial movement and migration of the permanent first molar often occurs. This is one of the most difficult problems of the developing dentition confronted by pediatric dentists. Use of a space maintainer that will guide the permanent first molar into its normal position is indicated. In cases with bilateral premature loss of primary molars, the conventional design of distal shoe poses a variety of problems and, therefore, necessitates a customized design for the eruption guidance of permanent first molars. The purpose of this case report is to discuss an innovative design of a distal shoe appliance, which was used with good clinical results.

  20. Distal protection devices during percutaneous coronary and carotid interventions.

    Science.gov (United States)

    Fasseas, Panayotis; Orford, James L; Denktas, Ali E; Berger, Peter B

    2001-01-01

    Distal embolization of particulate matter complicates percutaneous coronary and peripheral interventions more often than had been recognized until recently. A number of distal protection devices are under development. The PercuSurge GuardWiretrade mark is a balloon occlusion thrombectomy device approved by the United States Food and Drug Administration for saphenous vein graft intervention. A number of filter devices utilize an expandable filter mounted on the angioplasty guidewire to facilitate entrapment of particles and safe removal. The Parodi Anti-Emboli Systemtrade mark is an example of a catheter occlusion device that establishes protection by reversing blood flow in the target vessel.