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Sample records for arm wrist abdominal

  1. Anthropometry of height, weight, arm, wrist, abdominal circumference and body mass index, for Bolivian adolescents 12 to 18 years: Bolivian adolescent percentile values from the MESA study Referencias antropométricas de los adolescentes bolivianos de 12 a 18 años: estatura, peso, circunferencia del brazo, muñeca y abdominal, índice de masa corporal: Percentiles de adolescentes bolivianos (PAB del estudio MESA

    Directory of Open Access Journals (Sweden)

    A. Baya Botti

    2009-06-01

    Full Text Available Anthropometry is important as clinical tool for individual follow-up as well as for planning and health policymaking at population level. Recent references of Bolivian Adolescents are not available. The aim of this cross sectional study was to provide age and sex specific centile values and charts of Body Mass Index, height, weight, arm, wrist and abdominal circumference from Bolivian Adolescents. Data from the MEtabolic Syndrome in Adolescents (MESA study was used. Thirty-two Bolivian clusters from urban and rural areas were selected randomly considering population proportions, 3445 school going adolescents, 12 to 18 y, 45% males; 55% females underwent anthropometric evaluation by trained personnel using standardized protocols for all interviews and examinations. Weight, height, wrist, arm and abdominal circumference data were collected. Body Mass Index was calculated. Smoothed age- and gender specific 3rd, 5th, 10th, 25th, 50th, 75th, 85th, 90th, 95th and 97th Bolivian adolescent percentiles(BAP and Charts(BAC where derived using LMS regression. Percentile-based reference data for the antropometrics of for Bolivian Adolescents are presented for the first time.La antropometría es una herramienta clínica importante para el seguimiento individual de los pacientes así como para la planificación de políticas públicas. En Bolivia no existen referencias antropométricas nacionales para adolescentes. El objetivo de este estudio transversal fue de desarrollar percentiles y diagramas de crecimiento para peso, talla, índice de masa corporal, presión arterial sistólica y diastólica, circunferencia de muñeca, brazo y abdominal de adolescentes bolivianos. Los datos antropométricos en el estudio MESA (Síndrome metabólico en adolescentes bolivianos fueron obtenidos a partir de 32 unidades muestrales, considerando proporcionalidad muestral con reposición. Fueron evaluados 3445 adolescentes de 12 a 18, 45% hombres; 55% mujeres, de colegios de

  2. Importance of numerosity and distribution of articulations within the digits, wrists, and arms of telemanipulators confronted with dextrous assembly tasks

    Science.gov (United States)

    Wiker, Steven F.; Duffie, Nell; Yen, Thomas

    1992-01-01

    This study was conducted to evaluate the impact of successive exclusion of degrees-of-freedom within digits (thumb and index finger) and wrist when performing tasks demanding varying degrees of end effector kinematic complexity. The analysis was performed by successive constraining articulations in the fingers (thumb and index) and wrists or human subjects via splints, and then timing performance of part movement, positioning, and assembly operations requiring different levels of kinematic freedom. Analysis of performance times showed that transferring degrees-of-freedom, or articulations, from the digits to the wrist and arm had little or no material affect upon manipulation performance times if wrist and arm kinematics were unrestricted. If wrist and arm kinematics are not constrained and are of high-quality, our findings show that transferring kinematic freedom from the digits to the wrist and arms or remote end effectors offers limited or no consequence in terms of remote assembly operations. The importance of such findings, in terms of development and implementation of commercially attractive telemanipulators, is discussed.

  3. Wrist pain

    Science.gov (United States)

    Pain - wrist; Pain - carpal tunnel; Injury - wrist; Arthritis - wrist; Gout - wrist; Pseudogout - wrist ... Carpal tunnel syndrome: A common cause of wrist pain is carpal tunnel syndrome . You may feel aching, ...

  4. C-arm flat-panel CT arthrography of the wrist and elbow: first experiences in human cadavers

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    Guggenberger, Roman; Morsbach, Fabian; Alkadhi, Hatem; Pfammatter, Thomas; Hodler, Juerg; Andreisek, Gustav [University Hospital Zurich, Department of Radiology, Zurich (Switzerland); Vich, Magdalena [University Zurich, Institute of Anatomy, Zurich (Switzerland)

    2013-03-15

    To determine the optimal intra-articular iodine concentration for C-arm flat-panel computed tomography (FPCT) arthrography using advanced joint phantoms and to evaluate its application in human cadaveric wrists and elbows. Multi-detector (MD) CT served as the standard of reference. Joint phantoms and 10 human cadaveric wrist and elbow joints were scanned with C-arm FPCT (5-s, 8-s, and 20-s runs) and standard MDCT using different and optimal concentrations of iodinated contrast material. CT numbers of contrast material, tissue, and noise were measured and contrast-to-noise ratios (CNR) calculated for quantitative analysis. Image and depiction of cartilage, bone, and soft tissues were rated. Radiation doses were compared. In FPCT, iodine concentrations positively correlated with CT numbers and noise of contrast material and with radiation dose (r = 0.713-0.996, p < 0.05 each). At an iodine concentration of 45 mg/ml, CNR of cartilage and soft tissues were highest for all FPCT acquisitions and higher than in MDCT. The 20-s FPCT run performed best for image quality and depiction of anatomical structures and was rated overall equal to MDCT (p = 0.857). The optimal iodine concentration for C-arm FPCT arthrography in this study is 45 mg/ml, leading to superior CNR and image quality for an optimal FPCT protocol compared with standard MDCT arthrography in human cadaveric joints. (orig.)

  5. Dexterous Humanoid Robotic Wrist

    Science.gov (United States)

    Ihrke, Chris A. (Inventor); Bridgwater, Lyndon (Inventor); Reich, David M. (Inventor); Wampler, II, Charles W. (Inventor); Askew, Scott R. (Inventor); Diftler, Myron A. (Inventor); Nguyen, Vienny (Inventor)

    2013-01-01

    A humanoid robot includes a torso, a pair of arms, a neck, a head, a wrist joint assembly, and a control system. The arms and the neck movably extend from the torso. Each of the arms includes a lower arm and a hand that is rotatable relative to the lower arm. The wrist joint assembly is operatively defined between the lower arm and the hand. The wrist joint assembly includes a yaw axis and a pitch axis. The pitch axis is disposed in a spaced relationship to the yaw axis such that the axes are generally perpendicular. The pitch axis extends between the yaw axis and the lower arm. The hand is rotatable relative to the lower arm about each of the yaw axis and the pitch axis. The control system is configured for determining a yaw angle and a pitch angle of the wrist joint assembly.

  6. Parkinsonism reduces coordination of fingers, wrist, and arm in fine motor control.

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    Teulings, H L; Contreras-Vidal, J L; Stelmach, G E; Adler, C H

    1997-07-01

    This experiment investigates movement coordination in Parkinson's disease (PD) subjects. Seventeen PD patients and 12 elderly control subjects performed several handwriting-like tasks on a digitizing writing tablet resting on top of a table in front of the subject. The writing patterns, in increasing order of coordination complexity, were repetitive back-and-forth movements in various orientations, circles and loops in clockwise and counterclockwise directions, and a complex writing pattern. The patterns were analyzed in terms of jerk normalized for duration and size per stroke. In the PD subjects, back-and-forth strokes, involving coordination of fingers and wrist, showed larger normalized jerk than strokes performed using either the wrist or the fingers alone. In the PD patients, wrist flexion (plus radial deviation) showed greater normalized jerk in comparison to wrist extension (plus ulnar deviation). The elderly control subjects showed no such effects as a function of coordination complexity. For both PD and elderly control subjects, looping patterns consisting of circles with a left-to-right forearm movement, did not show a systematic increase of normalized jerk. The same handwriting patterns were then simulated using a biologically inspired neural network model of the basal ganglia thalamocortical relations for a control and a mild PD subject. The network simulation was consistent with the observed experimental results, providing additional support that a reduced capability to coordinate wrist and finger movements may be caused by suboptimal functioning of the basal ganglia in PD. The results suggest that in PD patients fine motor control problems may be caused by a reduced capability to coordinate the fingers and wrist and by reduced control of wrist flexion. PMID:9225749

  7. Linear Low Density Polyethylene (LLDPE) as Flexible Substrate for Wrist and Arm Antennas in C-Band

    Science.gov (United States)

    Gogoi, Pragyan Jyoti; Bhattacharyya, Satyajib; Bhattacharyya, Nidhi S.

    2015-04-01

    This paper focuses on the development and study of linear low density polyethylene as a flexible substrate for conformal antennas for body-worn applications. Thermal stability, tensile strength and elongation at break of the substrate were studied. The permittivity of the substrate was 2.2 and tan δ was found to be 0.0003 at 6 GHz. Since the antenna is being developed for wrist and arm wearing in C-band, the performance of the antenna, such as the S 11 parameter and radiation pattern, were studied with different bending axes and with bending curvature approximating that of the arm and wrist. The performance of a 6 GHz rectangular patch antenna with bending was found to be consistent with the flat profile antenna at the same frequency. A maximum shift in the resonant frequency of ˜20 MHz was observed. The -10 dB bandwidth and directivity of the antenna did not change much with bending. The maximum bending radius in the present study is 10 mm, and S 11 was found to be -17.53 dB at 5.94 GHz and -14.02 dB at 6.06 GHz for a bending axis parallel to the radiating and non-radiating edge, respectively.

  8. Recognition of elementary arm movements using orientation of a tri-axial accelerometer located near the wrist

    International Nuclear Information System (INIS)

    In this paper we present a method for recognising three fundamental movements of the human arm (reach and retrieve, lift cup to mouth, rotation of the arm) by determining the orientation of a tri-axial accelerometer located near the wrist. Our objective is to detect the occurrence of such movements performed with the impaired arm of a stroke patient during normal daily activities as a means to assess their rehabilitation. The method relies on accurately mapping transitions of predefined, standard orientations of the accelerometer to corresponding elementary arm movements. To evaluate the technique, kinematic data was collected from four healthy subjects and four stroke patients as they performed a number of activities involved in a representative activity of daily living, ‘making-a-cup-of-tea’. Our experimental results show that the proposed method can independently recognise all three of the elementary upper limb movements investigated with accuracies in the range 91–99% for healthy subjects and 70–85% for stroke patients. (paper)

  9. The impact of arm position and pulse pressure on the validation of a wrist-cuff blood pressure measurement device in a high risk population

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    Ali Reza Khoshdel

    2010-03-01

    Full Text Available Ali Reza Khoshdel1,2, Shane Carney2, Alastair Gillies21Faculty of Medicine, Aja University of Medical Science, Tehran, Iran; 2John Hunter Hospital, Faculty of Health, The University of Newcastle, Newcastle, NS W, AustraliaAbstract: Despite the increasing popularity of blood pressure (BP wrist monitors for self-BP measurement at home, device validation and the effect of arm position remains an issue. This study focused on the validation of the Omron HEM-609 wrist BP device, including an evaluation of the impact of arm position and pulse pressure on BP measurement validation. Fifty patients at high risk for cardiovascular disease were selected (age 65 ± 10 years. Each patient had two measurements with a mercury sphygmomanometer and three measurements with the wrist BP device (wrist at the heart level while the horizontal arm supported [HORIZONTAL], hand supported on the opposite shoulder [SHOULDER], and elbow placed on a desk [DESK], in random order. The achieved systolic BP (SBP and diastolic BP (DBP wrist-cuff readings were compared to the mercury device and the frequencies of the readings within 5, 10, and 15 mmHg of the gold standard were computed and compared with the British Hypertension Society (BHS and Association for the Advancement of Medical Instrumentation (AAMI protocols. The results showed while SBP readings with HORIZONTAL and SHOULDER positions were significantly different from the mercury device (mean difference = 7.1 and 13.3 mmHg, respectively; P < 0.05, the DESK position created the closest reading to mercury (mean difference = 3.8, P > 0.1. Approximately 71% of SBP readings with the DESK position were within ±10 mmHg, whereas it was 62.5% and 34% for HORIZONTAL and SHOULDER positions, respectively. Wrist DBP attained category D with BHS criteria with all three arm positions. Bland–Altman plots illustrated that the wrist monitor systematically underestimated SBP and DBP values. However a reading adjustment of 5 and 10 mm

  10. Animation of Phoenix's Wrist Unlatching

    Science.gov (United States)

    2008-01-01

    This animation shows what happened underneath Phoenix's Robotic Arm wrist on Sol 3. The pin that goes through the loop is what holds the wrist in place. The rotation of the wrist pops the pin free. The Phoenix Mission is led by the University of Arizona, Tucson, on behalf of NASA. Project management of the mission is by NASA's Jet Propulsion Laboratory, Pasadena, Calif. Spacecraft development is by Lockheed Martin Space Systems, Denver.

  11. When the diameter of the abdominal aorta should be considered as abnormal? A new ultrasonographic index using the wrist circumference as a body build reference

    International Nuclear Information System (INIS)

    Purpose: To use US to evaluate the normal values of aortic diameter (AD), stratifying the population by age, gender and body build, as measured using wrist circumference (WC). Materials and methods: Between April 2010 and February 2012, consecutive patients ≥ 30 years of age, without history of abdominal aortic aneurysm (AAA) were prospectively enrolled. They underwent an abdominal ultrasonography for reasons other than aorta evaluation. AD was measured at the infrarenal (AD1), intermediate (AD2), and iliac bifurcation (AD3) levels: a diameter ≥ 3 cm was considered as an aneurysm. The maximal aortic diameter (ADmax) was measured for AAA patients. WC was measured; AD/WC ratio was calculated and presented in percentage: the range of normal values was obtained excluding AAA cases and calculated as mean ± 1.96 × standard deviation. Pearson correlation coefficient was used. Results: We recruited 1200 patients, 15 (1.25%; age range = 64–86 years) had AAA. AD ranges of the other patients were: AD1 = 0.74–1.84 cm, AD2 = 0.78–1.85 cm, and AD3 = 0.68–1.76 cm for females; AD1 = 0.86–2.02 cm, AD2 = 0.91–2.08 cm, and AD3 = 0.84–1.95 cm for males. AD2/WC ratio of non-AAA patients range was 4–15%, with only one outlier at 18%, while ADmax/WC ratio of AAA patients range was 15–35% (p 1, r = 0.318, p 2 and r = 0.280, p 3). Conclusion: The definition of normal AD should consider body build. An AD2/WC ratio of 15% may be regarded as a threshold to differentiate AAA- from non-AAA patients. Patients with AD2/WC values comprised between 12% and 15% may be at risk for AAA

  12. When the diameter of the abdominal aorta should be considered as abnormal? A new ultrasonographic index using the wrist circumference as a body build reference

    Energy Technology Data Exchange (ETDEWEB)

    Sconfienza, Luca Maria, E-mail: io@lucasconfienza.it [Servizio di Radiologia, IRCCS Policlinico San Donato, Piazza Malan 2 – 20097 San Donato Milanese, Milano (Italy); Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, Piazza Malan 2 – 20097 San Donato Milanese, Milano (Italy); Santagostino, Ilaria, E-mail: isantagostino@hotmail.it [Scuola di Specializzazione in Radiodiagnostica, Università degli Studi di Milano, Via Festa del Perdono 7, 20100 Milano (Italy); Di Leo, Giovanni, E-mail: gianni.dileo77@gmail.com [Servizio di Radiologia, IRCCS Policlinico San Donato, Piazza Malan 2 – 20097 San Donato Milanese, Milano (Italy); Piazza, Raffaella; Gozzi, Gino, E-mail: radiologia.como@hsacomo.org [Diagnostica per Immagini, Ospedale Sant’Anna, Via Ravona 1, 22020 San Fermo della Battaglia, Como (Italy); Trimarchi, Santi, E-mail: satrimarchi@gmail.com [Chirurgia Vascolare II, IRCCS Policlinico San Donato, Piazza Malan 2 – 20097 San Donato Milanese, Milano (Italy); Sardanelli, Francesco, E-mail: francesco.sardanelli@unimi.it [Servizio di Radiologia, IRCCS Policlinico San Donato, Piazza Malan 2 – 20097 San Donato Milanese, Milano (Italy); Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, Piazza Malan 2 – 20097 San Donato Milanese, Milano (Italy)

    2013-10-01

    Purpose: To use US to evaluate the normal values of aortic diameter (AD), stratifying the population by age, gender and body build, as measured using wrist circumference (WC). Materials and methods: Between April 2010 and February 2012, consecutive patients ≥ 30 years of age, without history of abdominal aortic aneurysm (AAA) were prospectively enrolled. They underwent an abdominal ultrasonography for reasons other than aorta evaluation. AD was measured at the infrarenal (AD{sub 1}), intermediate (AD{sub 2}), and iliac bifurcation (AD{sub 3}) levels: a diameter ≥ 3 cm was considered as an aneurysm. The maximal aortic diameter (AD{sub max}) was measured for AAA patients. WC was measured; AD/WC ratio was calculated and presented in percentage: the range of normal values was obtained excluding AAA cases and calculated as mean ± 1.96 × standard deviation. Pearson correlation coefficient was used. Results: We recruited 1200 patients, 15 (1.25%; age range = 64–86 years) had AAA. AD ranges of the other patients were: AD{sub 1} = 0.74–1.84 cm, AD{sub 2} = 0.78–1.85 cm, and AD{sub 3} = 0.68–1.76 cm for females; AD{sub 1} = 0.86–2.02 cm, AD{sub 2} = 0.91–2.08 cm, and AD{sub 3} = 0.84–1.95 cm for males. AD{sub 2}/WC ratio of non-AAA patients range was 4–15%, with only one outlier at 18%, while AD{sub max}/WC ratio of AAA patients range was 15–35% (p < 0.001). ADs were significantly correlated with WC (r = 0.253, p < 0.001 for AD{sub 1}, r = 0.318, p < 0.001 for AD{sub 2} and r = 0.280, p < 0.001 for AD{sub 3}). Conclusion: The definition of normal AD should consider body build. An AD{sub 2}/WC ratio of 15% may be regarded as a threshold to differentiate AAA- from non-AAA patients. Patients with AD{sub 2}/WC values comprised between 12% and 15% may be at risk for AAA.

  13. Brain-Computer Interface-based robotic end effector system for wrist and hand rehabilitation: results of a three-armed randomized controlled trial for chronic stroke

    Directory of Open Access Journals (Sweden)

    Kai Keng eAng

    2014-07-01

    Full Text Available The objective of this study was to investigate the efficacy of an Electroencephalography (EEG-based Motor Imagery (MI Brain-Computer Interface (BCI coupled with a Haptic Knob (HK robot for arm rehabilitation in stroke patients. In this three-arm, single-blind, randomized controlled trial; 21 chronic hemiplegic stroke patients (Fugl-Meyer Motor Assessment (FMMA score 10-50, recruited after pre-screening for MI BCI ability, were randomly allocated to BCI-HK, HK or Standard Arm Therapy (SAT groups. All groups received 18 sessions of intervention over 6 weeks, 3 sessions per week, 90 minutes per session. The BCI-HK group received 1 hour of BCI coupled with HK intervention, and the HK group received 1 hour of HK intervention per session. Both BCI-HK and HK groups received 120 trials of robot-assisted hand grasping and knob manipulation followed by 30 minutes of therapist-assisted arm mobilization. The SAT group received 1.5 hours of therapist-assisted arm mobilization and forearm pronation-supination movements incorporating wrist control and grasp-release functions. In all, 14 males, 7 females, mean age 54.2 years, mean stroke duration 385.1 days, with baseline FMMA score 27.0 were recruited. The primary outcome measure was upper-extremity FMMA scores measured mid-intervention at week 3, end-intervention at week 6, and follow-up at weeks 12 and 24. Seven, 8 and 7 subjects underwent BCI-HK, HK and SAT interventions respectively. FMMA score improved in all groups, but no intergroup differences were found at any time points. Significantly larger motor gains were observed in the BCI-HK group compared to the SAT group at weeks 3, 12 and 24, but motor gains in the HK group did not differ from the SAT group at any time point. In conclusion, BCI-HK is effective, safe, and may have the potential for enhancing motor recovery in chronic stroke when combined with therapist-assisted arm mobilization.

  14. Brain-computer interface-based robotic end effector system for wrist and hand rehabilitation: results of a three-armed randomized controlled trial for chronic stroke.

    Science.gov (United States)

    Ang, Kai Keng; Guan, Cuntai; Phua, Kok Soon; Wang, Chuanchu; Zhou, Longjiang; Tang, Ka Yin; Ephraim Joseph, Gopal J; Kuah, Christopher Wee Keong; Chua, Karen Sui Geok

    2014-01-01

    The objective of this study was to investigate the efficacy of an Electroencephalography (EEG)-based Motor Imagery (MI) Brain-Computer Interface (BCI) coupled with a Haptic Knob (HK) robot for arm rehabilitation in stroke patients. In this three-arm, single-blind, randomized controlled trial; 21 chronic hemiplegic stroke patients (Fugl-Meyer Motor Assessment (FMMA) score 10-50), recruited after pre-screening for MI BCI ability, were randomly allocated to BCI-HK, HK or Standard Arm Therapy (SAT) groups. All groups received 18 sessions of intervention over 6 weeks, 3 sessions per week, 90 min per session. The BCI-HK group received 1 h of BCI coupled with HK intervention, and the HK group received 1 h of HK intervention per session. Both BCI-HK and HK groups received 120 trials of robot-assisted hand grasping and knob manipulation followed by 30 min of therapist-assisted arm mobilization. The SAT group received 1.5 h of therapist-assisted arm mobilization and forearm pronation-supination movements incorporating wrist control and grasp-release functions. In all, 14 males, 7 females, mean age 54.2 years, mean stroke duration 385.1 days, with baseline FMMA score 27.0 were recruited. The primary outcome measure was upper extremity FMMA scores measured mid-intervention at week 3, end-intervention at week 6, and follow-up at weeks 12 and 24. Seven, 8 and 7 subjects underwent BCI-HK, HK and SAT interventions respectively. FMMA score improved in all groups, but no intergroup differences were found at any time points. Significantly larger motor gains were observed in the BCI-HK group compared to the SAT group at weeks 3, 12, and 24, but motor gains in the HK group did not differ from the SAT group at any time point. In conclusion, BCI-HK is effective, safe, and may have the potential for enhancing motor recovery in chronic stroke when combined with therapist-assisted arm mobilization.

  15. Arm Care. Relief and Prevention for Shoulder Tendonitis, Tennis Elbow, Bursitis and Wrist Sprain in Athletics and Other Activities.

    Science.gov (United States)

    Nirschl, Robert P.

    The book provides a practical and meaningful treatment program for athletes involved in sports which injure the arm or shoulder to a high degree, such as tennis, baseball, swimming, raquetball, pole vaulting, javelin throwing, and weight training. The book's chapters present information on: (1) symptoms of injury; (2) the anatomy of injury; (3)…

  16. Analysis of the treatment of abdominal pedicle flap repair of wrist electric burn%腹部带蒂皮瓣修复腕部电烧伤的治疗效果观察

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    张凤刚; 沈锐; 陈晓东; 刘婕婷; 阮树斌

    2016-01-01

    Objective To analyze the research of wrist electric burn patients through the abdomen with pedicled skin flap for repairing of treatment method,in order to provide the basis for clinical practice. Methods A total of August 2013 to August 2015 of wrist electric burn patient data of 50 cases of the implementation of retrospective analysis and summary of wounds in 50 cases of patients with treatment and functional recovery of the relationship between the degree and amputation. Results 50 patients underwent surgical treatment of 58 cases,and non operative treatment in 5 cases. Eight debridement and skin graft,stage I healing 4(50. 0% );eight adjacent random flap and axial pattern flap to repair,stage I healing 5(62. 5% );forty abdominal random flap,axial pattern skin flap and free + axial pattern skin flap,stage I healing 32(80. 0% ). There were no deaths in 50 cases,49 cases were cured,one patient returned to the local hospital to continue treatment. Follow up showed that patients with wrist electric burn site shape and range of motion and strength good,fully functional or recovered,curative effect satisfaction. Conclusion Implementation early incision decompression,debridement and flap surgery for wrist electric burn,can guarantee the healing effect,reduce the amputation rate,it should be popularized in clinic.%目的:观察腕部电烧伤患者通过腹部带蒂皮瓣修复治疗效果。方法选取2013年8月-2015年8月收治的50例腕部电烧伤患者的临床资料进行回顾性分析,观察50例患者的创面处理方式和功能恢复程度以及截肢情况。结果50例患者行手术治疗58例次,非手术治疗5例次,其中采取扩创以及游离植皮8处,Ⅰ期愈合4处(50.0%);邻近随意皮瓣以及轴型皮瓣转移修复8处,Ⅰ期愈合5处(62.5%);腹部随意皮瓣、轴型皮瓣以及随意+轴型皮瓣40处,Ⅰ期愈合32处(80.0%)。本组50例患者无死亡病例,治愈49例,剩余1例回到当地医

  17. Trends in Wrist Arthroscopy

    Science.gov (United States)

    Obdeijn, Miryam C.; Tuijthof, Gabrielle J. M.; van der Horst, Chantal M. A. M.; Mathoulin, Christophe; Liverneaux, Philippe

    2013-01-01

    Background Wrist arthroscopy plays a role in both the diagnosis and the treatment of wrist pathology. It has evolved in the last three decades. Questions The present status of wrist arthroscopy was investigated by answering the following questions: -What is its current position in the treatment wrist pathologies according to the literature? -What is its current position according to hand surgeons? Methods Analysis of the number of publications on wrist arthroscopy was performed and compared with the number of publications on other arthroscopy topics to assess the current position of wrist arthroscopy. The members of the EWAS (European Wrist Arthroscopy Society) and the members of eight national hand surgery societies were questioned on wrist arthroscopy in daily practice. Results From 1975 till now, 925 papers on wrist arthroscopy were found. The publications on wrist arthroscopy increased from an average of 8/year (1986) to 26/year (2012). More than half (56.9%) of the respondents of the EWAS perform fewer than 5 wrist arthroscopies per month, and only 7 (10.8%) indicate the performance of more than 10 wrist arthroscopies per month. Seventy-four percent of the orthopedic hand surgeons perform wrist arthroscopy (in 48.5% for therapeutic indications) against 36.8% of plastic surgery hand surgeons (in 23.1% for therapeutic indications). Conclusion Wrist arthroscopy has taken up a place in the armamentarium of the hand surgeon. The place of wrist arthroscopy in daily practice is related to the background of the hand surgeon. PMID:24436823

  18. Whole-body CT in polytrauma patients: the effect of arm position on abdominal image quality when using a human phantom

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    Jeon, Pil-Hyun [Yonsei University, Wonju (Korea, Republic of); Wonju Christian Hospital, Wonju (Korea, Republic of); Kim, Hee-Joung; Lee, Chang-Lae; Kim, Dae-Hong [Yonsei University, Wonju (Korea, Republic of); Lee, Won-Hyung; Jeon, Sung-Su [Wonju Christian Hospital, Wonju (Korea, Republic of)

    2012-06-15

    For a considerable number of emergency computed tomography (CT) scans, patients are unable to position their arms above their head due to traumatic injuries. The arms-down position has been shown to reduce image quality with beam-hardening artifacts in the dorsal regions of the liver, spleen, and kidneys, rendering these images non-diagnostic. The purpose of this study was to evaluate the effect of arm position on the image quality in patients undergoing whole-body CT. We acquired CT scans with various acquisition parameters at voltages of 80, 120, and 140 kVp and an increasing tube current from 200 to 400 mAs in 50 mAs increments. The image noise and the contrast assessment were considered for quantitative analyses of the CT images. The image noise (IN), the contrast-to-noise ratio (CNR), the signal-to-noise ratio (SNR), and the coefficient of variation (COV) were evaluated. Quantitative analyses of the experiments were performed with CT scans representative of five different arm positions. Results of the CT scans acquired at 120 kVp and 250 mAs showed high image quality in patients with both arms raised above the head (SNR: 12.4, CNR: 10.9, and COV: 8.1) and both arms flexed at the elbows on the chest (SNR: 11.5, CNR: 10.2, and COV: 8.8) while the image quality significantly decreased with both arms in the down position (SNR: 9.1, CNR: 7.6, and COV: 11). Both arms raised, one arm raised, and both arms flexed improved the image quality compared to arms in the down position by reducing beam-hardening and streak artifacts caused by the arms being at the side of body. This study provides optimal methods for achieving higher image quality and lower noise in abdominal CT for trauma patients.

  19. Arthritis of the Wrist

    Science.gov (United States)

    ... in the hand and wrist. It is symmetrical, meaning that it usually affects the same joint on ... swelling, pain, limited motion, and weakness. However, in contrast to OA, wrist symptoms will usually be accompanied ...

  20. 腹部联合轴型皮瓣修复腕部环状高压电烧伤创面%Repair of circumferential wound in the wrist region due to high-voltage electrical burn using combined abdominal axial pattern flaps

    Institute of Scientific and Technical Information of China (English)

    沈余明; 田彭; 宁方刚; 覃凤均; 张国安

    2012-01-01

    Objective To explore the method for repairing circumferential wound in the wrist region due to high-voltage electrical burn.Methods Six patients with circumferential wound in the wrist region after high-voltage electrical burn were admitted to our hospital from January 2009 to December 2011.After debridement,wounds in the wrist were repaired with combined abdominal axial pattern flaps.The wound of wrist on the flexor aspect was repaired with paraumbilical flap carrying a portion of rectus abdominis that filled the wound cavity of the wrist on the flexor aspect.The wound of wrist on the dorsal aspect was repaired with lower abdominal flap.Pedicle division was performed 4-5 weeks post surgery.Some donor sites were sutured directly,and the others were closed by skin grafting after the suture of anterior sheath.Results Three flaps survived.Liquefaction necrosis of tissue was observed under two flaps,and they were healed after debridement.Radial artery embolism of wrist occurred in one flap when pedicle division was performed 5 weeks post surgery,and it was healed by a transplantation of a segment of the great saphenous vein to reconstruct radial artery right after debridement.Patients were followed up for 6-12 months,and satisfactory appearance and function of the flaps were observed.Conclusions It is a feasible option to repair circumferential wound in the wrist region due to high-voltage electrical burn by using paraumbilical flap carrying a portion of rectus abdominis muscle combined with lower abdominal flap.%目的 探讨腕部环状高压电烧伤创面的修复方法. 方法 2009年1月-2011年12月,笔者单位收治6例腕部环状高压电烧伤患者,清创后采用腹部联合轴型皮瓣修复腕部创面,即用带部分腹直肌的脐旁皮瓣修复腕屈侧创面,其中腹直肌充填腕屈侧腔隙;下腹部皮瓣修复腕背侧创面,术后4~5周断蒂.供瓣区部分直接.拢缝合,部分在前鞘拉拢缝合后植皮修复. 结果 3

  1. 上臂式电子血压计和手腕式电子血压计的准确性比较%Comparison of Upper Arm Type Electronic Sphygmomanometer and Wrist Electronic Blood Pressure Monitor

    Institute of Scientific and Technical Information of China (English)

    马凤莲

    2015-01-01

    电子血压计被越来越多的家庭使用,但是其测量的准确性一直被使用者质疑。本文按YY 0670-2008《无创自动测量血压计》标准,对上臂式电子血压计和手腕式电子血压计的可重复性和压力传感器准确性进行检测、比较,为使用者提供科学依据。%Electronic sphygmomanometers have been used widely by many families, but their accuracy of measurement was doubt by the users. According to standard of YY 0670-2008 “Non-invasive Automated Sphygmomanometers”, this article was reported the testing and comparisons of repeatability of the upper arm electronic sphygmomanometers and the wrist electronic sphygmomanometers and the accuracy of pressure sensors. This article provided the scientiifc basis and data for the users.

  2. Two-degree-of-freedom powered prosthetic wrist

    Directory of Open Access Journals (Sweden)

    Peter J. Kyberd, PhD

    2011-07-01

    Full Text Available Prosthetic wrists need to be compact. By minimizing space requirements, a wrist unit can be made for people with long residual limbs. This prosthetic wrist uses two motors arranged across the arm within the envelope of the hand. The drive is transmitted by a differential so that it produces wrist flexion and extension, pronation and supination, or a combination of both. As a case study, it was controlled by a single-prosthesis user with pattern recognition of the myoelectric signals from the forearm. The result is a compact, two-degree-of-freedom prosthetic wrist that has the potential to improve the functionality of any prosthetic hand by creating a hand orientation that more closely matches grasp requirements.

  3. Advances in wrist arthroscopy.

    Science.gov (United States)

    Wolf, Jennifer Moriatis; Dukas, Alex; Pensak, Michael

    2012-11-01

    Since its introduction more than three decades ago, wrist arthroscopy has continually evolved. The procedure has a wide list of indications, including diagnostic and management applications. The scope of practice for the wrist arthroscopic surgeon includes management of triangulofibrocartilage complex pathology, evaluation and management of carpal instability, assistance in fracture reduction of the radius and scaphoid, treatment of trapeziometacarpal synovitis and arthritis, distal ulnar and carpal bone excisions, and salvage procedures. In addition, innovations such as new portals and smaller arthroscopes have expanded the applications of wrist arthroscopy. PMID:23118138

  4. MRI of the wrist

    Energy Technology Data Exchange (ETDEWEB)

    Dick, Elizabeth A. [Department of MRI, St Mary' s Hospital, Praed St, London W2 1NY (United Kingdom)], E-mail: dickelizabeth@hotmail.com; Burnett, Carole; Gedroyc, Wladyslaw M.W. [Department of MRI, St Mary' s Hospital, Praed St, London W2 1NY (United Kingdom)

    2008-08-15

    Magnetic resonance imaging of the wrist is increasingly recognised as the imaging modality of choice in wrist disorders as image resolution improves and clinicians realise its potential. Consequently the ability to confidently interpret such imaging will become more important to both general and musculoskeletal radiologists. This article reviews current optimal imaging protocols and describes common abnormalities with a particular emphasis on less well understood topics such as intercalated segment instability, the triangular fibrocartilage complex and carpal tunnel syndrome.

  5. Proximal wrist extensor tendinopathy

    OpenAIRE

    Ihm, Joseph

    2007-01-01

    Proximal wrist extensor tendinopathy, which is also known as tennis elbow, is pain at or just distal to the lateral humeral epicondyle within the proximal wrist extensor tendon. It occurs commonly in certain athletes but can also occur in people with jobs that require repetitive movements of the hand and upper limb. In most cases the tendon involved shows no signs of inflammation or tendonitis, but instead shows fibroblasts, vascular hyperplasia, and disorganized collagen. Diagnosis is often ...

  6. X-Ray Exam: Wrist

    Science.gov (United States)

    ... Tropical Delight: Melon Smoothie Pregnant? Your Baby's Growth X-Ray Exam: Wrist KidsHealth > For Parents > X-Ray Exam: Wrist Print A A A Text Size ... español Radiografía: muñeca What It Is A wrist X-ray is a safe and painless test that uses ...

  7. Locating the wrist of an elbow-type manipulator

    Science.gov (United States)

    Crochetiere, W. J.

    1984-06-01

    An elbow-type manipulator with a shoulder offset may assume a given wrist position in as many as four different configurations (shoulder right/left, elbow up/down). The inverse kinematic solution that defines each of these configurations for a PUMA 560 robot arm is derived trigonometrically. This solution is also compared to a previously reported solution.

  8. Incidence of abdominal hernias in service members, active component, U.S. Armed Forces, 2005-2014.

    Science.gov (United States)

    O'Donnell, Francis L; Taubman, Stephen B

    2016-08-01

    From 1 January 2005 through 31 December 2014, a total of 87,480 incident diagnoses of the five types of abdominal hernia (incidence rate 63.3 cases per 10,000 person-years) were documented in the health records of 72,404 active component service members. The overall incidence rate of inguinal hernias among males was six times the rate among females. However, incidence rates of femoral, ventral/incisional, and umbilical hernias were higher among females than males. During the 10-year interval, annual incidence rates for most of the five types of hernia trended downward, but rates increased for umbilical hernias in both males and females and for ventral/ incisional hernias among females. For most types of hernia, the incidence rates tended to be higher among the older age groups. Health records documented 35,624 surgical procedures whose descriptions corresponded to the types of hernia diagnoses in the service members. Most repair procedures were performed in outpatient settings. The proportion of surgical procedures performed via laparoscopy increased during the period, but the majority of operations were open procedures. The limitations to the generalizability of the findings in this study are discussed.

  9. Physical examination of the wrist.

    Science.gov (United States)

    Young, Darryl; Papp, Steven; Giachino, Alan

    2007-04-01

    Physical examination of the wrist requires knowledge of wrist anatomy and pathology to make a diagnosis or narrow the differential diagnosis. Symptoms are provoked by palpation and signs are produced by manipulation. Negative findings elsewhere in the wrist are important. Final diagnosis may require diagnostic imaging. By having all three methods of assessment agree one is assured of correct diagnosis. The physical examination of the wrist is not unlike that of other joints, in that a systematic approach includes observation, range of motion, palpation, and special tests.

  10. Effects of Taping on Pain, Grip Strength and Wrist Extension Force in Patients with Tennis Elbow

    Science.gov (United States)

    Shamsoddini, Alireza; Hollisaz, Mohammad Taghi

    2013-01-01

    Background Tennis elbow (TE) is a common musculotendinous degenerative disorder of the extensor origin at the lateral humeral epicondyle. Different modes of treatment are used for management of tennis elbow. Objectives This study investigated the effect of the taping technique (TT) on pain, grip strength and wrist extension force in treatment of tennis elbow. Patients and Methods Thirty patients (16 men /14 women with a mean age of 32.2 years) with tennis elbow of their dominant arm participated in this study. Outcome measures were assessment of pain at the lateral aspect of the elbow, grip strength and wrist extension force before and five to ten minutes after application of elbow tape on the affected and unaffected arms. A Visual Analog Scale was used to assess pain. A dynamometer and a hand-held dynamometer were used for evaluation of grip strength and wrist extension force, respectively. Results Among the variables, significant differences were found in wrist extension forces between effected and unaffected arms (P = 0.02). Changes in grip strength showed statically significant improvements in the affected arm compared to the unaffected arm (P = 0.03). Also, in assessment of pain at the lateral epicondyle, the mean change between affected and unaffected arms was significant, with P = 0.001. Conclusions The taping technique, as applied in this study demonstrates an impressive effect on wrist extension force and grip strength of patients with TE. Elbow taping also reduces pain at the lateral aspect of the elbow in these patients. PMID:24350156

  11. Epidemiology of acute wrist trauma

    DEFF Research Database (Denmark)

    Larsen, C F; Lauritsen, Jens

    1993-01-01

    Epidemiological data on wrist injuries in a population can be used for planning by applying them to criteria for care and thus deriving estimates of provisions for care according to currently desirable standards. In a 1-year study all patients > or = 15 years with acute wrist trauma and treated i...

  12. A historically controlled, single-arm, multi-centre, prospective trial to evaluate the safety and efficacy of MonoMax® suture material for abdominal wall closure after primary midline laparotomy. ISSAAC-Trial [NCT005725079

    Directory of Open Access Journals (Sweden)

    Franck Annette

    2008-07-01

    Full Text Available Abstract Background Several randomized controlled trials have compared different suture materials and techniques for abdominal wall closure with respect to the incidence of incisional hernias after midline laparotomy and shown that it remains, irrespective of the methods used, considerably high, ranging from 9% to 20%. The development of improved suture materials which would reduce postoperative complications may help to lower its frequency. Design This is a historically controlled, single-arm, multi-centre, prospective trial to evaluate the safety of MonoMax® suture material for abdominal wall closure in 150 patients with primary elective midline incisions. INSECT patients who underwent abdominal closure using Monoplus® and PDS® will serve as historical control group. The incidences of wound infections and of burst abdomen are defined as composite primary endpoints. Secondary endpoints are the frequency of incisional hernias within one year after operation and safety. To ensure adequate comparability in surgical performance and recruitment, the 4 largest centres of the INSECT-Trial will participate. After hospital discharge, the investigators will examine the enrolled patients again at 30 days and at 12 ± 1 months after surgery. Conclusion This historically controlled, single-arm, multi-centre, prospective ISSAAC trial aims to assess whether the use of an ultra-long-lasting absorbable monofilament suture material is safe and efficient. Trial registration NCT005725079

  13. Intervention randomized controlled trials involving wrist and shoulder arthroscopy: a systematic review

    OpenAIRE

    Tadjerbashi, Kamelia; Rosales, Roberto S; Atroshi, Isam

    2014-01-01

    Background: Although arthroscopy of upper extremity joints was initially a diagnostic tool, it is increasingly used for therapeutic interventions. Randomized controlled trials (RCTs) are considered the gold standard for assessing treatment efficacy. We aimed to review the literature for intervention RCTs involving wrist and shoulder arthroscopy. Methods: We performed a systematic review for RCTs in which at least one arm was an intervention performed through wrist arthroscopy or shoulder arth...

  14. 21 CFR 888.3810 - Wrist joint ulnar (hemi-wrist) polymer prosthesis.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Wrist joint ulnar (hemi-wrist) polymer prosthesis. 888.3810 Section 888.3810 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN... (hemi-wrist) polymer prosthesis. (a) Identification. A wrist joint ulnar (hemi-wrist) polymer...

  15. Evidence-based nursing care for patients from different cultures with a fractured wrist in a plaster cast

    OpenAIRE

    Kabuki Ocansey, Pearl

    2013-01-01

    A broken arm or wrist is usually caused by a fall onto an outstretched arm. It usually takes six to eight weeks to heal in adults, and less time in children. The aim of this study sought to describe how nurses can care for patients from different cultures with a fractured wrist in a plaster of paris cast. Qualitative content analysis was used to analysis the findings. The findings from the literature reviewed were grouped into three themes: nursing care for wrist fractures, providing cult...

  16. The effects of electromechanical wrist robot assistive system with neuromuscular electrical stimulation for stroke rehabilitation.

    Science.gov (United States)

    Hu, X L; Tong, K Y; Li, R; Xue, J J; Ho, S K; Chen, P

    2012-06-01

    An electromyography (EMG)-driven electromechanical robot system integrated with neuromuscular electrical stimulation (NMES) was developed for wrist training after stroke. The performance of the system in assisting wrist flexion/extension tracking was evaluated on five chronic stroke subjects, when the system provided five different schemes with or without NMES and robot assistance. The tracking performances were measured by range of motion (ROM) of the wrist and root mean squared error (RMSE). The performance is better when both NMES and robot assisted in the tracking than those with either NMES or robot only (Pmotor functions in the hand, wrist and elbow functions after the training, as indicated by the clinical scores of Fugl-Meyer Assessment, Action Research Arm Test, Wolf Motor Function Test; and also showed reduced spasticity in the wrist and the elbow as measured by the Modified Ashworth Score of each subject. After the training, the co-contractions were reduced between the flexor carpi radialis and extensor carpi radialis, and between the biceps brachii and triceps brachii. Assistance from the robot helped improve the movement accuracy; and the NMES helped increase the muscle activation for the wrist joint and suppress the excessive muscular activities from the elbow joint. The NMES-robot assisted wrist training could improve the hand, wrist, and elbow functions.

  17. Object/wrist movements during manipulation in children with cerebral palsy.

    Science.gov (United States)

    Wright, M G; Hunt, L P; Stanley, O H

    2005-01-01

    The kinematics of the wrist and a manipulated object were studied in a posting task in 30 control, eight hemiplegic and 10 diplegic children. Statistical analyses using 'mixed' models examined the effects of subject group, hand, object shape and repeated trials, together with all possible interaction terms. During transport to the posting hole, the number of significant peaks/troughs in the velocity/time profile of the wrist in the transport ('z') direction were increased in subjects with cerebral palsy, as were adjustment error and the distances moved by the object relative to the wrist, reflecting more unpredictable object movement. In the placing phase, relative object/wrist normalized 'z' distances and number of wrist 'z' velocity peaks increased with increasing object complexity, reflecting the need for more adjustment movements. The number of wrist 'z' velocity peaks/troughs and adjustment error were increased in cerebral palsy subjects, reflecting ineffective adjustment. Relative object/wrist distances and number of wrist 'z' velocity troughs were reduced in both phases with repeated trials. It is suggested that such variables may provide a quantitative measure of poor movement 'quality' in children with Cerebral Palsy and that these findings reflect reduced mechanical stability of the hand and arm during movement.

  18. Small Business Innovations (Robotic Wrist)

    Science.gov (United States)

    1991-01-01

    Under a Langley Research Center Small Business Innovation Research (SBIR) contract, Ross-Hime Designs, Inc. Minneapolis, MN, developed the Omni-Wrist actuator, which has a 25-pound capacity, 180 degrees of pitch/yaw, and 360 degrees of roll. Company literature calls it "the first successful singularity-free high-precision (robotic) wrist." Applications include spray painting, sealing, ultrasonic testing, welding and a variety of nuclear industry, aerospace and military uses.

  19. Abdominal Adhesions

    Science.gov (United States)

    ... adhesions? Abdominal adhesions can cause intestinal obstruction and female infertility—the inability to become pregnant after a year of trying. Abdominal adhesions can lead to female infertility by preventing fertilized eggs from reaching the uterus, ...

  20. Computational Biomechanics of the Wrist Joint

    CERN Document Server

    Nazri Bajuri, Mohd

    2013-01-01

    This book presents an analysis of the stress distribution and contact stresses in severe rheumatoid wrist after total wrist arthroplasty. It assesses and compares the load transfer throughout the joint and contact pressure at the articulations. The data obtained from this study is of importance as this provide greater evidence to the benefits of total wrist arthroplasty in rheumatoid arthritis patients.

  1. New advances in wrist arthroscopy.

    Science.gov (United States)

    Bain, Gregory I; Munt, Justin; Turner, Perry C

    2008-03-01

    Wrist arthroscopy is a commonly used procedure that has undergone many modifications and improvements since it was first described. The advent of new portals (both dorsal and volar) means that the wrist joint can be viewed from virtually any perspective ("box concept"). Indications for wrist arthroscopy have continued to expand and include diagnostic and reparative procedures and, more recently, reconstructive, soft-tissue, and bony procedures. Arthroscopic grading of Kienböck's disease better describes articular damage compared with plain radiographs and can help guide surgical treatment options. Triangular fibrocartilage complex injury diagnosis, classification, and treatment can be performed arthroscopically, including distal ulna resection (wafer procedure). Assessment of fracture reduction of the distal radius and scaphoid is superior to that obtained with fluoroscopy, with the advantage of being able to look for associated soft-tissue and chondral injuries. Arthroscopic assessment of intercarpal ligament injuries and instability is now considered the gold standard by many authors. Arthroscopy can also aid us in the management of post-traumatic capsular contraction, resection of ganglia, and the relatively rare isolated ulna styloid impaction. Complications of wrist arthroscopy are relatively uncommon. With the ever-expanding list of indications and procedures that can be performed with this technique, it exists as an essential diagnostic and therapeutic tool for the orthopaedic surgeon. PMID:18308189

  2. Double representation of the wrist and elbow in human motor cortex

    NARCIS (Netherlands)

    Strother, L.; Medendorp, W.P.; Coros, A.M.; Vilis, T.

    2012-01-01

    Movements of the fingers, hand and arm involve overlapping neural representations in primary motor cortex (M1). Monkey M1 exhibits a coresurround organisation in which cortical representation of the hand and fingers is surrounded by representations of the wrist, elbow and shoulder. A potentially hom

  3. Denervation of the wrist joint.

    Science.gov (United States)

    Buck-Gramcko, D

    1977-01-01

    A collective review was made of the results of denervation of the wrist joint for painful restrictiorn of motion done in 313 patients and follow-up studies on 195 (average 4.1 years, ranging from 9 months to 14 years). Complete denervation was done in only 30, partial denervation in the others being done after testing with local anesthetic blocks. Sixty-nine of the patients retained a moble wrist without pain or with slight pain with heavy work. No evidence of Charcot-like joints was seen. Poorest results followed when the operation was done for sequelae of intra-articular fracture of the radius, fracture dislocations, unstable ligamentous support, joint surface destruction, or for those required to do heavy manual labor. Arthrodesis was done secondarily in nine patients. PMID:839055

  4. Radiologic examination and measurement of the wrist and distal radio-ulnar joint. New aspects

    Energy Technology Data Exchange (ETDEWEB)

    Toernvall, A.H.; Ekenstam, F. af; Hagert, C.G.; Irstam, L.

    Following fractures of the distal radius, a relatively high incidence of complications is caused by malalignment in the distal radio-ulnar (DRU) joint; recent anatomic and clinical investigations have shown a congruity of that joint to be of significant importance for restoring the function of the wrist. The radius forms a moderately arched bone, which moves around the ulna in pronation and supination. Biomechanically, the ulna may be regarded as the pillar around which the radius moves. In an anatomic investigation of 5 arm specimens, we have shown that the maximum cartilage contact in the DRU joint between the ulna head and the distal radius occurs in the neutral rotation position. A proposed routine examination method of the wrist and forearm includes a true antero-posterior and a lateral projection of the radius and the ulna, performed with the forearm and wrist in a neutral rotation, a neutral wrist deviation and with the elbow angled 90 degrees. Such an examination implies a standardized and reproducible method. In a radioanatomic investigation, a series of 50 healthy wrists and forearms were examined. A simple measuring technique is presented, applicable to the DRU joint and wrist favouring the ulna as the bone through which a reproducible long axis of the forearm/wrist may be drawn. It is suggested that the length of the radius should be judged relative to the ulna. Ulnar head inclination and radio-ulnar angle are new concepts, being major characteristics of the DRU joint. These angles of the right and left wrist were equal and no difference was found between the sexes. Minor alterations of the distal radius may be revealed when estimating these angles.

  5. Abdominal trauma

    International Nuclear Information System (INIS)

    Abdominal injury is an important cause of morbidity and mortality in childhood. Ten percent of trauma-related deaths are due to abdominal injury. Thousands of children are involved in auto accidents annually; many suffer severe internal injury. Child abuse is a second less frequent but equally serious cause of internal abdominal injury. The descriptions of McCort and Eisenstein and their associates in the 1960s first brought to attention the frequency and severity of visceral injury as important manifestations of the child abuse syndrome. Blunt abdominal trauma often causes multiple injuries; in the past, many children have been subjected to exploratory surgery to evaluate the extent of possible hidden injury. Since the advent of noninvasive radiologic imaging techniques including radionuclide scans and ultrasound and, especially, computed tomography (CT), the radiologist has been better able to assess (accurately) the extent of abdominal injury and thus allow conservative therapy in many cases. Penetrating abdominal trauma occurs following gunshot wounds, stabbing, and other similar injury. This is fortunately, a relatively uncommon occurrence in most pediatric centers and will not be discussed specifically here, although many principles of blunt trauma diagnosis are valid for evaluation of penetrating abdominal trauma. If there is any question that a wound has extended intraperitonelly, a sinogram with water-soluble contrast material allows quick, accurate diagnosis. The presence of large amounts of free intraperitoneal gas suggests penetrating injury to the colon or other gas-containing viscus and is generally considered an indication for surgery

  6. Can total wrist arthroplasty be an option in the treatment of the severely destroyed posttraumatic wrist?

    DEFF Research Database (Denmark)

    Boeckstyns, Michel E H; Herzberg, Guillaume; Sørensen, Allan Ibsen;

    2013-01-01

    Background Severely destroyed posttraumatic wrists are usually treated by partial or total wrist fusion or proximal row carpectomy. The indications for and longevity of total wrist arthroplasty (TWA) are still unclear. Case Description The aim of this study was to analyze a series in which one la...

  7. A cable-driven wrist robotic rehabilitator using a novel torque-field controller for human motion training

    Science.gov (United States)

    Chen, Weihai; Cui, Xiang; Zhang, Jianbin; Wang, Jianhua

    2015-06-01

    Rehabilitation technologies have great potentials in assisted motion training for stroke patients. Considering that wrist motion plays an important role in arm dexterous manipulation of activities of daily living, this paper focuses on developing a cable-driven wrist robotic rehabilitator (CDWRR) for motion training or assistance to subjects with motor disabilities. The CDWRR utilizes the wrist skeletal joints and arm segments as the supporting structure and takes advantage of cable-driven parallel design to build the system, which brings the properties of flexibility, low-cost, and low-weight. The controller of the CDWRR is designed typically based on a virtual torque-field, which is to plan "assist-as-needed" torques for the spherical motion of wrist responding to the orientation deviation in wrist motion training. The torque-field controller can be customized to different levels of rehabilitation training requirements by tuning the field parameters. Additionally, a rapidly convergent parameter self-identification algorithm is developed to obtain the uncertain parameters automatically for the floating wearable structure of the CDWRR. Finally, experiments on a healthy subject are carried out to demonstrate the performance of the controller and the feasibility of the CDWRR on wrist motion training or assistance.

  8. Abdominal sounds

    Science.gov (United States)

    ... during sleep. They also occur normally for a short time after the use of certain medicines and after abdominal surgery. Decreased or absent bowel sounds often indicate constipation. Increased ( hyperactive ) bowel sounds ...

  9. Favorable results after total wrist arthroplasty

    DEFF Research Database (Denmark)

    Boeckstyns, Michel E. H.; Herzberg, G.; Merser, Søren

    2013-01-01

    Background and purpose During the past 40 years, several attempts have been made with total wrist arthroplasty to avoid fusion in severely destroyed wrists. The results have often been disappointing. There is only modest clinical documentation due to the small number of patients (especially non-r...

  10. Wrist arthroplasty--a systematic review

    DEFF Research Database (Denmark)

    Boeckstyns, Michel E H

    2014-01-01

    INTRODUCTION: Severely painful or dysfunctional destroyed wrists can be reconstructed by fusion, interposition of soft-tissue or by arthroplasty using artificial materials. Total and partial wrist arthroplasty (T/PWA) has been used on a regular basis since the 1960's. The objective of this study ...

  11. Current innovations in wrist arthroscopy.

    Science.gov (United States)

    Slutsky, David J

    2012-09-01

    It has become clear that the stability of the scapholunate joint does not depend wholly on the scapholunate interosseous ligament, but rather on both primary and secondary stabilizers, which form a scapholunate ligament complex. Each case of scapholunate instability is unique and should be treated with tissue-specific repairs, which may partly explain why one procedure cannot successfully restore joint stability in every case. Wrist arthroscopy has a pivotal role in both the assessment and treatment of the scapholunate ligament complex derangements. Tears of the foveal attachment of the triangular fibrocartilaginous complex can be an underdiagnosed cause of distal radioulnar joint instability, because the foveal fibers cannot be visualized using the standard radiocarpal arthroscopy portals. Distal radioulnar joint arthroscopy allows for direct visualization and assessment of these fibers, which in turn has spawned a number of open and arthroscopic repair methods. Wrist arthroscopy has gained wider acceptance as a method to fine-tune articular reduction during open and percutaneous fixation of distal radius fractures, and simplifies intra-articular osteotomies for malunion. It can facilitate percutaneous bone grafting of scaphoid nonunions and has a role in the diagnosis and treatment of associated soft tissue lesions. These and other recent developments will be discussed in the following article. PMID:22916867

  12. Supinator Extender (SUE): a pneumatically actuated robot for forearm/wrist rehabilitation after stroke.

    Science.gov (United States)

    Allington, James; Spencer, Steven J; Klein, Julius; Buell, Meghan; Reinkensmeyer, David J; Bobrow, James

    2011-01-01

    The robot described in this paper, SUE (Supinator Extender), adds forearm/wrist rehabilitation functionality to the UCI BONES exoskeleton robot and to the ArmeoSpring rehabilitation device. SUE is a 2-DOF serial chain that can measure and assist forearm supination-pronation and wrist flexion-extension. The large power to weight ratio of pneumatic actuators allows SUE to achieve the forces needed for rehabilitation therapy while remaining lightweight enough to be carried by BONES and ArmeoSpring. Each degree of freedom has a range of 90 degrees, and a nominal torque of 2 ft-lbs. The cylinders are mounted away from the patient's body on the lateral aspect of the arm. This is to prevent the danger of a collision and maximize the workspace of the arm robot. The rotation axis used for supination-pronation is a small bearing just below the subject's wrist. The flexion-extension motion is actuated by a cantilevered pneumatic cylinder, which allows the palm of the hand to remain open. Data are presented that demonstrate the ability of SUE to measure and cancel forearm/wrist passive tone, thereby extending the active range of motion for people with stroke.

  13. Abdominal Sepsis.

    Science.gov (United States)

    De Waele, Jan J

    2016-08-01

    Abdominal infections are an important challenge for the intensive care physician. In an era of increasing antimicrobial resistance, selecting the appropriate regimen is important and, with new drugs coming to the market, correct use is important more than ever before and abdominal infections are an excellent target for antimicrobial stewardship programs. Biomarkers may be helpful, but their exact role in managing abdominal infections remains incompletely understood. Source control also remains an ongoing conundrum, and evidence is increasing that its importance supersedes the impact of antibiotic therapy. New strategies such as open abdomen management may offer added benefit in severely ill patients, but more data are needed to identify its exact role. The role of fungi and the need for antifungal coverage, on the other hand, have been investigated extensively in recent years, but at this point, it remains unclear who requires empirical as well as directed therapy. PMID:27363829

  14. Abdominal Pain

    Science.gov (United States)

    ... relaxation. Guided imagery for abdominal pain About self-hypnosis and kids See YourChild : Pain and Your Child or Teen for more detail ... how to help your baby cope with the pain of medical procedures, circumcision, and teething. ... Helping Kids YourChild : A Look at Biofeedback YourChild : ...

  15. Recognizing upper limb movements with wrist worn inertial sensors using k-means clustering classification

    OpenAIRE

    Biswas, Dwaipayan; Cranny, Andy; Gupta, Nayaab; Maharatna, Koushik; Achner, Josy; Klemke, Jasmin; Jobges, Michael; Ortmann, Steffen

    2015-01-01

    In this paper we present a methodology for recognizing three fundamental movements of the human forearm (extension, flexion and rotation) using pattern recognition applied to the data from a single wrist-worn, inertial sensor. We propose that this technique could be used as a clinical tool to assess rehabilitation progress in neurodegenerative pathologies such as stroke or cerebral palsy by tracking the number of times a patient performs specific arm movements (e.g. prescribed exercises) with...

  16. Cortical Decoding of Individual Finger and Wrist Kinematics for an Upper-Limb Neuroprosthesis

    OpenAIRE

    Aggarwal, Vikram; Tenore, Francesco; Acharya, Soumyadipta; Schieber, Marc H.; Thakor, Nitish V.

    2009-01-01

    Previous research has shown that neuronal activity can be used to continuously decode the kinematics of gross movements involving arm and hand trajectory. However, decoding the kinematics of fine motor movements, such as the manipulation of individual fingers, has not been demonstrated. In this study, single unit activities were recorded from task-related neurons in M1 of two trained rhesus monkey as they performed individuated movements of the fingers and wrist. The primates’ hand was placed...

  17. MR and CT arthrography of the wrist.

    Science.gov (United States)

    Cerezal, Luis; de Dios Berná-Mestre, Juan; Canga, Ana; Llopis, Eva; Rolon, Alejandro; Martín-Oliva, Xavier; del Piñal, Francisco

    2012-02-01

    The study of the wrist represents a major diagnostic challenge because of its complex anatomy and the small size of individual structures. Recent advances in imaging techniques have increased our diagnostic capabilities. However, 3T magnets, multichannel specific wrist coils, and new MRI sequences have not restricted the indications of arthrographic imaging techniques (CT arthrography and MR arthrography). Distension of the different wrist compartments at CT arthrography and MR arthrography significantly improves the diagnostic accuracy for triangular fibrocartilage (TFC) complex injuries and carpal instability. Dedicated multichannel wrist coils are essential for an adequate study of the wrist, but the placement of these coils and the positioning of the wrist are also important for proper diagnosis. The development of dynamic multislice CT studies allows a diagnostic approach that combines dynamic information and the accurate assessment of ligaments and the TFC complex. New advances in arthroscopy have changed the anatomical description of the TFC with a functional division in the proximal and distal TFC complex, and they have allowed a better characterization of lesions of the TFC complex with subclassification of Palmer 1B and 1D lesions and description of new lesions not included in the Palmer classification, such as capsular injuries. PMID:22447235

  18. Automatic Segmentation of Wrist Bones in CT Using a Statistical Wrist Shape + Pose Model.

    Science.gov (United States)

    Anas, Emran Mohammad Abu; Rasoulian, Abtin; Seitel, Alexander; Darras, Kathryn; Wilson, David; John, Paul St; Pichora, David; Mousavi, Parvin; Rohling, Robert; Abolmaesumi, Purang

    2016-08-01

    Segmentation of the wrist bones in CT images has been frequently used in different clinical applications including arthritis evaluation, bone age assessment and image-guided interventions. The major challenges include non-uniformity and spongy textures of the bone tissue as well as narrow inter-bone spaces. In this work, we propose an automatic wrist bone segmentation technique for CT images based on a statistical model that captures the shape and pose variations of the wrist joint across 60 example wrists at nine different wrist positions. To establish the correspondences across the training shapes at neutral positions, the wrist bone surfaces are jointly aligned using a group-wise registration framework based on a Gaussian Mixture Model. Principal component analysis is then used to determine the major modes of shape variations. The variations in poses not only across the population but also across different wrist positions are incorporated in two pose models. An intra-subject pose model is developed by utilizing the similarity transforms at all wrist positions across the population. Further, an inter-subject pose model is used to model the pose variations across different wrist positions. For segmentation of the wrist bones in CT images, the developed model is registered to the edge point cloud extracted from the CT volume through an expectation maximization based probabilistic approach. Residual registration errors are corrected by application of a non-rigid registration technique. We validate the proposed segmentation method by registering the wrist model to a total of 66 unseen CT volumes of average voxel size of 0.38 mm. We report a mean surface distance error of 0.33 mm and a mean Jaccard index of 0.86. PMID:26890640

  19. Evaluation of wrist arthroscopy outcomes in patients with chronic wrist pain

    Directory of Open Access Journals (Sweden)

    Reza Shahryar Kamrani

    2015-01-01

    Conclusion: According to our results, wrist arthroscopy have acceptable outcome in TFCC injuries and Kienbock disease. With the ever-expanding list of indications and procedures that can be performed with wrist arthroscopy, it can be considered as an essential diagnostic and therapeutic tool for the orthopedic surgeon.

  20. Phoenix Stretches its Arm

    Science.gov (United States)

    2008-01-01

    [figure removed for brevity, see original site] Click on image for animation The Phoenix spacecraft is scheduled to begin raising its robotic arm up and out of its stowed configuration on the third Martian day, or Sol 3 (May 28, 2008) of the mission. This artist's animation, based on engineering models, shows how Phoenix will accomplish this task. First, its wrist actuator will rotate, releasing its launch-restraint pin. Next, the forearm moves up, releasing the elbow launch-restraint pin. The elbow will then move up and over in small steps, a process referred to as 'staircasing.' This ensures that the arm's protective biobarrier wrap, now unpeeled and lying to the side of the arm, will not get in the way of the arm's deployment. The arm is scheduled to straighten all the way out on Sol 4 (May 29, 2008), after engineers have reviewed images and telemetry data from the spacecraft showing that the biobarrier material has been cleared. The Phoenix Mission is led by the University of Arizona, Tucson, on behalf of NASA. Project management of the mission is by NASA's Jet Propulsion Laboratory, Pasadena, Calif. Spacecraft development is by Lockheed Martin Space Systems, Denver.

  1. Prevalence of carpal tunnel syndrome and wrist osteoarthritis in long-term paraplegic patients compared with controls.

    Science.gov (United States)

    Akbar, M; Penzkofer, S; Weber, M A; Bruckner, T; Winterstein, M; Jung, M

    2014-02-01

    We compared functional and structural changes in the hands, in particular the prevalence of carpal tunnel syndrome, in 56 paraplegic patients who had been wheelchair dependent for over 25 years with a group of able-bodied volunteers (with matching criteria for gender and age). The hands were assessed by clinical examination, electrophysiology, disabilities of the arm shoulder and hand score and magnetic resonance imaging. Hand function was worse and wrist pain was experienced more often in the paraplegic patients, and they also had a significantly higher prevalence of carpal tunnel syndrome both clinically and electrophysiologically. The prevalence of wrist and trapeziometacarpal osteoarthritis was significantly higher in the right hand.

  2. Tuberculous Tenosynovitis Presenting as Ganglion of Wrist

    Directory of Open Access Journals (Sweden)

    Shahaji Chavan

    2012-01-01

    Full Text Available Tuberculosis (TB is still endemic in many developed countries. Involvement of the hand and wrist at presentation is extremely rare, and the diagnosis is often missed. A 57 years old male presented with swelling over the left wrist since 3 years Three swellings over dorsal aspect of the left wrist Soft in consistency Non tender Non compressible Mobile at right angles to the plane of the wrist joint. ESR: 45 mm in 1 hr and rest blood investigations were normal. Ultrsonography showed giant cell tumor of Extensor Digitorum sheath. X-ray: soft tissue swelling and MRI was suggestive of extensor tendon sheath extraskeletal synovial Koch’s, or giant cell tumor of tendon sheath. Excision of swelling was planned and intraoperatively, rice bodies were seen inside it. Histopathological examination showed caseous necrosis with granuloma formation. Patient was put on DOT1 therapy. Tuberculous tenosynovitis was first described by Acrel in 1777. Rice bodies occurring in joints affected by tuberculosis were first described in 1895 by Reise. Rice bodies will be diagnosed on plain radiographs when mineralization occurs. More than 50% of cases recur within 1 year of treatment. The currently recommended 6-month course is often adequate with extensive curettage lavage and synovectomy should be performed. Surgery is essential, but the extent of surgical debridement is still debatable. The surgeon has to be aware of the significance of loose bodies when performing routine excision of innocuous looking wrist ganglia.

  3. A Global Obstacle-avoidance Map for Anthropomorphic Arms

    Directory of Open Access Journals (Sweden)

    Cheng Fang

    2014-07-01

    Full Text Available More and more humanoid robots are used in human society, and they face a wide variety of complicated manipulation tasks, which are mainly to be achieved by their anthropomorphic arms. Obstacle avoidance for the anthropomorphic arm must be a fundamental consideration to guarantee the successful implementation of these tasks. Different from traditional methods searching for feasible or optimal collision-free solutions for the anthropomorphic arm, a global obstacle- avoidance map for the whole arm is proposed to indicate the complete set of feasible solutions. In this map, the motion of the arm can be appropriately planned to intuitively control the configuration of the arm in motion. First, the cubic spline function is adopted to interpolate some well-chosen path points to generate a smooth collision-free path for the wrist of the anthropomorphic arm. Second, based on the path function of the wrist, the time and the self-rotation angle of the arm about the “shoulder-wrist” axis are used to parameterize all possible configurations of the arm so that a global two- dimensional map considering the obstacle avoidance can be established. Subsequently, a collision-free self-rotation angle profile of the arm can be well planned. Finally, the joint trajectories of a specific anthropomorphic arm, which correspond to the planned path of the wrist and self-rotation angle profile of the arm, can be solved on the basis of the general kinematic analysis of the anthropomorphic arm, and the specific structure. Several simulations are conducted to verify that the proposed collision-free motion planning method for anthropomorphic arms has some advantages and can be regarded as a convenient and intuitive tool to control the configuration of the anthropomorphic arm in motion, without collision with obstacles in its surroundings.

  4. De quervain tenosynovitis of the wrist.

    Science.gov (United States)

    Ilyas, Asif M; Ilyas, Asif; Ast, Michael; Schaffer, Alyssa A; Thoder, Joseph

    2007-12-01

    De quervain disease, or stenosing tenosynovitis of the first dorsal compartment of the wrist, is a common wrist pathology. Pain results from resisted gliding of the abductor pollicis longus and the extensor pollicis brevis tendons in the fibro-osseus canal. de Quervain tenosynovitis of the wrist is more common in women than men. Diagnosis may be made on physical examination. Radiographs are helpful in ruling out offending bony pathology. Nonsurgical management, consisting of corticosteroid injections and supportive thumb spica splinting, is usually successful. In resistant cases, surgical release of the first dorsal compartment is done, taking care to protect the radial sensory nerve and identify all accessory compartments. Repair of the extensor retinaculum by step-cut lengthening or other techniques is rarely required. PMID:18063716

  5. Regression Model-Based Walking Speed Estimation Using Wrist-Worn Inertial Sensor

    Science.gov (United States)

    Park, Edward J.

    2016-01-01

    Walking speed is widely used to study human health status. Wearable inertial measurement units (IMU) are promising tools for the ambulatory measurement of walking speed. Among wearable inertial sensors, the ones worn on the wrist, such as a watch or band, have relatively higher potential to be easily incorporated into daily lifestyle. Using the arm swing motion in walking, this paper proposes a regression model-based method for longitudinal walking speed estimation using a wrist-worn IMU. A novel kinematic variable is proposed, which finds the wrist acceleration in the principal axis (i.e. the direction of the arm swing). This variable (called pca-acc) is obtained by applying sensor fusion on IMU data to find the orientation followed by the use of principal component analysis. An experimental evaluation was performed on 15 healthy young subjects during free walking trials. The experimental results show that the use of the proposed pca-acc variable can significantly improve the walking speed estimation accuracy when compared to the use of raw acceleration information (p<0.01). When Gaussian process regression is used, the resulting walking speed estimation accuracy and precision is about 5.9% and 4.7%, respectively. PMID:27764231

  6. A random forest classifier for the prediction of energy expenditure and type of physical activity from wrist and hip accelerometers

    International Nuclear Information System (INIS)

    Wrist accelerometers are being used in population level surveillance of physical activity (PA) but more research is needed to evaluate their validity for correctly classifying types of PA behavior and predicting energy expenditure (EE). In this study we compare accelerometers worn on the wrist and hip, and the added value of heart rate (HR) data, for predicting PA type and EE using machine learning. Forty adults performed locomotion and household activities in a lab setting while wearing three ActiGraph GT3X+ accelerometers (left hip, right hip, non-dominant wrist) and a HR monitor (Polar RS400). Participants also wore a portable indirect calorimeter (COSMED K4b2), from which EE and metabolic equivalents (METs) were computed for each minute. We developed two predictive models: a random forest classifier to predict activity type and a random forest of regression trees to estimate METs. Predictions were evaluated using leave-one-user-out cross-validation. The hip accelerometer obtained an average accuracy of 92.3% in predicting four activity types (household, stairs, walking, running), while the wrist accelerometer obtained an average accuracy of 87.5%. Across all 8 activities combined (laundry, window washing, dusting, dishes, sweeping, stairs, walking, running), the hip and wrist accelerometers obtained average accuracies of 70.2% and 80.2% respectively. Predicting METs using the hip or wrist devices alone obtained root mean square errors (rMSE) of 1.09 and 1.00 METs per 6 min bout, respectively. Including HR data improved MET estimation, but did not significantly improve activity type classification. These results demonstrate the validity of random forest classification and regression forests for PA type and MET prediction using accelerometers. The wrist accelerometer proved more useful in predicting activities with significant arm movement, while the hip accelerometer was superior for predicting locomotion and estimating EE. (paper)

  7. Abdominal Aortic Aneurysms: Treatments

    Science.gov (United States)

    ... access catheters Vertebroplasty Women and vascular disease Women's health Social Media Facebook Twitter ... Abdominal Aortic Aneurysms Interventional Radiologists Treat Abdominal Aneurysms Nonsurgically Interventional radiologists are vascular ...

  8. Prediction of the Wrist Joint Position During a Postural Tremor Using Neural Oscillators and an Adaptive Controller.

    Science.gov (United States)

    Kobravi, Hamid Reza; Ali, Sara Hemmati; Vatandoust, Masood; Marvi, Rasoul

    2016-01-01

    The prediction of the joint angle position, especially during tremor bursts, can be useful for detecting, tracking, and forecasting tremors. Thus, this research proposes a new model for predicting the wrist joint position during rhythmic bursts and inter-burst intervals. Since a tremor is an approximately rhythmic and roughly sinusoidal movement, neural oscillators have been selected to underlie the proposed model. Two neural oscillators were adopted. Electromyogram (EMG) signals were recorded from the extensor carpi radialis and flexor carpi radialis muscles concurrent with the joint angle signals of a stroke subject in an arm constant-posture. The output frequency of each oscillator was equal to the frequency corresponding to the maximum value of power spectrum related to the rhythmic wrist joint angle signals which had been recorded during a postural tremor. The phase shift between the outputs of the two oscillators was equal to the phase shift between the muscle activation of the wrist flexor and extensor muscles. The difference between the two oscillators' output signals was considered the main pattern. Along with a proportional compensator, an adaptive neural controller has adjusted the amplitude of the main pattern in such a way so as to minimize the wrist joint prediction error during a stroke patient's tremor burst and a healthy subject's generated artificial tremor. In regard to the range of wrist joint movement during the observed rhythmic motions, a calculated prediction error is deemed acceptable. PMID:27186540

  9. Positioning of the wrist for scaphoid radiography

    Energy Technology Data Exchange (ETDEWEB)

    Toth, Ferenc [Department of Traumatology and Hand Surgery, Medical School of Pecs University, PF.: 99, Akac utca 1, H-7601 Pecs (Hungary)], E-mail: tothf2@yahoo.com; Sebestyen, Andor [Baranya County Health Insurance Fund, Nagy Lajos kiraly utja 3, 7623 Pecs (Hungary); Balint, Lehel [Department of Orthopaedic Surgery, Medical School of Pecs University, Ifjusag u. 13, 7643 Pecs (Hungary); Mester, Sandor [Szent Gyorgy County Hospital, Seregelyesi u. 3, 8000 Szekesfehervar (Hungary); Szabo, Gyorgy [Department of Orthopaedic Surgery, Medical School of Pecs University, Ifjusag u. 13, 7643 Pecs (Hungary); Nyarady, Jozsef [Department of Traumatology and Hand Surgery, Medical School of Pecs University, PF.: 99, Akac utca 1, H-7601 Pecs (Hungary); Weninger, Csaba [Department of Radiology, Medical School of Pecs University, Ifjusag u. 13, 7643 Pecs (Hungary); Angyal, Miklos [Department of Forensic Medicine, Medical School of Pecs University, Ifjusag u. 13, 7643 Pecs (Hungary); Lovasz, Gyorgy [Department of Orthopaedic Surgery, Medical School of Pecs University, Ifjusag u. 13, 7643 Pecs (Hungary)

    2007-10-15

    Purpose: The purpose of this cadaver study was to determine the ideal position of the wrist for scaphoid radiography. Materials and methods: Four cadaver wrists were rotated around their longitudinal axis in 15 deg. increments and exposures were taken. Seven postero-anterior images were taken as well. Thus, 18 images of each wrist were available for assessment. Views were determined in which the main anatomic regions of the scaphoid were visualized undistorted. The size and localization of the overlap of other carpal bones were also evaluated. Finally, views with the best visualization of anatomic landmarks were selected. The results of these three investigations were compared to literature data. Results: We consider the following four images the most valuable in the diagnostic imaging of scaphoid bone: (1) Postero-anterior view in ulnar deviation of wrist and fist position of the hand; (2) oblique view in 60 deg. of pronation; (3) oblique view in 60 deg. of supination; (4) lateral view. Conclusion: We concluded that our four views are sufficient for proper radiographic evaluation of the scaphoid.

  10. Multicentric extra-abdominal desmoid tumors arising in bilateral lower limbs

    Directory of Open Access Journals (Sweden)

    Nobuhiro Fukushima

    2010-03-01

    Full Text Available Extra-abdominal desmoid tumors preferentially affect the shoulders, arms, backs, buttocks, and thighs of young adults. Multicentric occurrence is rather rare but seems to be another distinctive feature of extra-abdominal desmoid tumors. In this article we report a rare case of multicentric extra-abdominal desmoid tumors arising in bilateral lower limbs.

  11. Scapholunate kinematics of asymptomatic wrists in comparison with symptomatic contralateral wrists using four-dimensional CT examinations: initial clinical experience

    Energy Technology Data Exchange (ETDEWEB)

    Demehri, Shadpour; Hafezi-Nejad, Nima; Morelli, John N.; Thakur, Uma; Eng, John [Johns Hopkins University, Musculoskeletal Radiology, Russell H. Morgan Department of Radiology and Radiological Science, Baltimore, MD (United States); Lifchez, Scott D.; Shores, Jaimie T. [Johns Hopkins University, Department of Plastic and Reconstructive Surgery, Baltimore, MD (United States); Means, Kenneth R. [MedStar Union Memorial Hospital, The Curtis National Hand Center, Baltimore, MD (United States)

    2016-04-15

    Using four-dimensional CT scan (4DCT), we aimed at showing the kinematics of scapholunate (SL) interval in asymptomatic wrists in comparison with symptomatic contralateral wrists with inconclusive radiographic findings. This is an IRB approved, HIPPA compliant, retrospective study. Patients suspected of SL interosseous ligament (SLIL) injuries were referred for further evaluation of chronic wrist pain (>3 months). Twelve wrists (11 subjects) with chronic symptoms and inconclusive plain radiographs and 10 asymptomatic wrists (in 10 different subjects) were scanned using 4DCT. The minimum SL interval was measured during three wrist motions: relaxed-to-clenched fist, flexion-to-extension, and radial-to-ulnar-deviation. Changes were recorded using double-oblique multiplanar reformation technique. We extracted the normal limits of the SL interval as measured by dynamic CT scanning during active motion in asymptomatic wrists. In asymptomatic wrists, the average SL interval was observed to be smaller than 1 mm during all motions. In symptomatic wrists, during exams performed with clenched fist (SL interval (mean ± SD) = 2.53 ± 1.19 mm), extension (2.54 ± 1.48 mm) or ulnar deviation (2.06 ± 1.12 mm), the average SL interval was more than 2 mm. In contrast to symptomatic wrists, no significant change in SL interval measurements was detected during wrist motions in asymptomatic wrists. There was a mild to moderate correlation between SL interval change and presence/absence of symptoms (point-biserial correlation coefficients: 0.29-0.55). In patients with wrist pain suspicious for SLIL injury and inconclusive radiographs, SL interval increase can be detected with 4DCT in the symptomatic wrist compared to the asymptomatic wrist. (orig.)

  12. Scapholunate kinematics of asymptomatic wrists in comparison with symptomatic contralateral wrists using four-dimensional CT examinations: initial clinical experience

    International Nuclear Information System (INIS)

    Using four-dimensional CT scan (4DCT), we aimed at showing the kinematics of scapholunate (SL) interval in asymptomatic wrists in comparison with symptomatic contralateral wrists with inconclusive radiographic findings. This is an IRB approved, HIPPA compliant, retrospective study. Patients suspected of SL interosseous ligament (SLIL) injuries were referred for further evaluation of chronic wrist pain (>3 months). Twelve wrists (11 subjects) with chronic symptoms and inconclusive plain radiographs and 10 asymptomatic wrists (in 10 different subjects) were scanned using 4DCT. The minimum SL interval was measured during three wrist motions: relaxed-to-clenched fist, flexion-to-extension, and radial-to-ulnar-deviation. Changes were recorded using double-oblique multiplanar reformation technique. We extracted the normal limits of the SL interval as measured by dynamic CT scanning during active motion in asymptomatic wrists. In asymptomatic wrists, the average SL interval was observed to be smaller than 1 mm during all motions. In symptomatic wrists, during exams performed with clenched fist (SL interval (mean ± SD) = 2.53 ± 1.19 mm), extension (2.54 ± 1.48 mm) or ulnar deviation (2.06 ± 1.12 mm), the average SL interval was more than 2 mm. In contrast to symptomatic wrists, no significant change in SL interval measurements was detected during wrist motions in asymptomatic wrists. There was a mild to moderate correlation between SL interval change and presence/absence of symptoms (point-biserial correlation coefficients: 0.29-0.55). In patients with wrist pain suspicious for SLIL injury and inconclusive radiographs, SL interval increase can be detected with 4DCT in the symptomatic wrist compared to the asymptomatic wrist. (orig.)

  13. Application of the Blobo bluetooth ball in wrist rehabilitation training.

    Science.gov (United States)

    Hsieh, Wei-Min; Hwang, Yuh-Shyan; Chen, Shih-Ching; Tan, Sun-Yen; Chen, Chih-Chen; Chen, Yu-Luen

    2016-01-01

    [Purpose] The introduction of emerging technologies such as the wireless Blobo bluetooth ball with multimedia features can enhance wrist physical therapy training, making it more fun and enhancing its effects. [Methods] Wrist injuries caused by fatigue at work, improper exercise, and other conditions are very common. Therefore, the reconstruction of wrist joint function is an important issue. The efficacy of a newly developed integrated wrist joint rehabilitation game using a Blobo bluetooth ball with C# software installed was tested in wrist rehabilitation (Flexion, Extension, Ulnar Deviation, Radial Deviation). [Results] Eight subjects with normal wrist function participated in a test of the system's stability and repeatability. After performing the Blobo bluetooth ball wrist physical therapy training, eight patients with wrist dysfunction experienced approximately 10° improvements in range of motion (ROM) of flexion extension, and ulnar deviation and about 6° ROM improvement in radial deviation. The subjects showed progress in important indicators of wrist function. [Conclusion] This study used the Blobo bluetooth ball in wrist physical therapy training and the preliminary results were encouraging. In the future, more diverse wrist or limb rehabilitation games should be developed to meet the needs of physical therapy training. PMID:26957723

  14. Restoring ADL function after wrist surgery in children with cerebral palsy: a novel Bilateral robot system design.

    Science.gov (United States)

    Holley, D; Theriault, A; Kamara, S; Anewenter, V; Hughes, D; Johnson, M J

    2013-06-01

    Cerebral palsy is a leading cause of disability in children and reducing its effects on arm function will improve quality of life. Our goal is to train children with CP after wrist tendon transfer surgery using a robotic therapy system consisting of two robot arms and wrist robots. The therapeutic goal is to determine if the robot training combined with surgery intervention improved functional outcomes significantly more than surgery alone. To accomplish this long-term goal we have developed a Bilateral ADL Exercise Robot, BiADLER aimed at training children with CP in reach to grasp coordination on ADLs. Specifically, the robot will provide active training using an assist-as-needed. This paper presents the design concepts. PMID:24187280

  15. Design And Implementation Of Anthropomorphic Robotic Arm

    Directory of Open Access Journals (Sweden)

    Ashish Sharma

    2014-01-01

    Full Text Available The report focuses on the design and demonstration of an anthropomorphic robotic arm with seven degrees of freedom using readily available low-cost components to perform different real time human hand applications. The robotic arm consists of a shoulder, elbow, wrist and a five-finger gripper. It can perform different gripping actions, such as lateral, spherical, cylindrical and tip-holding gripping actions; each finger has three movable links. The actuator used for the robotic arm is a high torque dc servo motor and the five-finger gripper consists of five cables placed like tendons in the human arm. Implementation is done using a human hand glove which senses the motion from sensor technology to produce a proportional analog voltage, digitized via the microcontroller Atmel ATmega32. The microcontroller then through the processed signal controls the mechanical structure that is the robotic arm. Keywords –

  16. Robot-aided assessment of wrist proprioception

    Directory of Open Access Journals (Sweden)

    Leonardo eCappello

    2015-04-01

    Full Text Available Introduction. Impaired proprioception severely affects the control of gross and fine motor function. However, clinical assessment of proprioceptive deficits and its impact on motor function has been difficult to elucidate. Recent advances in haptic robotic interfaces designed for sensorimotor rehabilitation enabled the use of such devices for the assessment of proprioceptive function.Purpose. This study evaluated the feasibility of a wrist robot system to determine proprioceptive discrimination thresholds for two different DoFs of the wrist. Specifically, we sought to accomplish three aims: first, to establish data validity; second, to show that the system is sensitive to detect small differences in acuity; third, to establish test-retest reliability over repeated testing.Methodology. Eleven healthy adult subjects experienced two passive wrist movements and had to verbally indicate which movement had the larger amplitude. Based on a subject’s response data a psychometric function was fitted and the wrist acuity threshold was established at the 75% correct response level. A subset of five subjects repeated the experimentation three times (T1, T2 and T3 to determine the test-retest reliability.Results. Mean threshold for wrist flexion was 2.15°± 0.43° and 1.52°± 0.36° for abduction. Encoder resolutions were 0.0075° (flexion-extension and 0.0032° (abduction-adduction. Motor resolutions were 0.2° (flexion-extension and 0.3° (abduction-adduction. Reliability coefficients were rT2-T1=0.986 and rT3-T2=0.971.Conclusions. We currently lack established norm data on the proprioceptive acuity of the wrist to establish direct validity. However, the magnitude of our reported thresholds are physiological plausible and well in line with available threshold data obtained at the elbow joint. Moreover, system has high resolution and is sensitive enough to detect small differences in acuity. Finally, the system produces reliable data over repeated

  17. Trabecular bone structure in the primate wrist.

    Science.gov (United States)

    Schilling, Ann-Marie; Tofanelli, Sergio; Hublin, Jean-Jacques; Kivell, Tracy L

    2014-05-01

    Trabecular (or cancellous) bone has been shown to respond to mechanical loading throughout ontogeny and thus can provide unique insight into skeletal function and locomotion in comparative studies of living and fossil mammalian morphology. Trabecular bone of the hand may be particularly functionally informative because the hand has more direct contact with the substrate compared with the remainder of the forelimb during locomotion in quadrupedal mammals. This study investigates the trabecular structure within the wrist across a sample of haplorhine primates that vary in locomotor behaviour (and thus hand use) and body size. High-resolution microtomographic scans were collected of the lunate, scaphoid, and capitate in 41 individuals and eight genera (Homo, Gorilla, Pan, Papio, Pongo, Symphalangus, Hylobates, and Ateles). We predicted that particular trabecular parameters would 1) vary across suspensory, quadrupedal, and bipedal primates based on differences in hand use and load, and 2) scale with carpal size following similar allometric patterns found previously in other skeletal elements across a larger sample of mammals and primates. Analyses of variance (trabecular parameters analysed separately) and principal component analyses (trabecular parameters analysed together) revealed no clear functional signal in the trabecular structure of any of the three wrist bones. Instead, there was a large degree of variation within suspensory and quadrupedal locomotor groups, as well as high intrageneric variation within some taxa, particularly Pongo and Gorilla. However, as predicted, Homo sapiens, which rarely use their hands for locomotion and weight support, were unique in showing lower relative bone volume (BV/TV) compared with all other taxa. Furthermore, parameters used to quantify trabecular structure within the wrist scale with size generally following similar allometric patterns found in trabeculae of other mammalian skeletal elements. We discuss the challenges

  18. Ultrasound findings of ganglions of the wrist.

    Science.gov (United States)

    Päivänsalo, M; Jalovaara, P

    1991-01-01

    Fifty-one patients with a palpable swelling of a wrist or finger of suspected ganglion origin were examined by ultrasound (US). Forty-five were operated on, and a ganglion was found in 35. The ganglions took the form of cysts 0.4-4 cm in diameter (mean 1.4 cm) with a projection into the joint or tendon in 19 cases. Two patients had multiple ganglia, and two a wrist lipoma, one echo-rich and the other echo-poor with a thick wall. One patient had a giant cell tumour of the tendon sheath which was moderately echogenic in appearance, one had carpal tunnel syndrome and a ganglion-like finding at US, one had tenosynovitis and negative US and one had a prominent tendon due to postoperative sequelae, with US showing a longish echo-poor lesion. Two had hypertrophied muscle forming a long echo-poor structure, one had an exostosis and one had no abnormality in the wrist at operation. Our experiences suggest that ultrasound is useful in many cases with impression of a ganglion at palpation showing multiplicity of a lesion or for assisting in differential diagnosis, although a physical examination is mostly sufficient for diagnostic purposes. PMID:1756743

  19. High-energy injuries of the wrist.

    Science.gov (United States)

    Obert, L; Loisel, F; Jardin, E; Gasse, N; Lepage, D

    2016-02-01

    High-energy injuries to the wrist gather complex fractures of the distal radius, radiocarpal dislocations, perilunate dislocations, and other intracarpal dislocations. Depending on the energy of the injury and the position of the wrist at the time of impact, the patient, often a young male with a high functional demand, presents one of these injuries associating fracture(s) and ligament injury. The trauma is often bilateral, with proximal lesions (elbow) very often associated with contusion or compression of the median nerve. Diagnosis is confirmed by wrist X-rays, which are sufficient to determine treatment for radiocarpal and perilunate dislocations. In cases of distal radius fractures or other intracarpal dislocations, a preoperative CT is necessary. Reduction of the dislocation and relief of neurovascular compression are performed immediately. The final treatment of each lesion (bone fixation, ligament repair) can be undertaken simultaneously or delayed, depending on the patient and the lesions. Cartilage lesions, resulting from the high-energy injury, can be estimated using arthroscopy but cannot be repaired and determine the prognosis. The surgeon's objective is to restore joint congruence, which does not prevent stiffness, the main complication of these rare injuries, which the surgeon must know how to recognize and treat. PMID:26782706

  20. Radiologic evaluation of hand and wrist motion.

    Science.gov (United States)

    Bond, J R; Berquist, T H

    1991-02-01

    Abnormal motion due to instability at the carpus and distal radioulnar joint can be difficult to diagnose clinically, and radiologic evaluation can be very helpful. The anatomy and kinematics are complex, and a directed approach is necessary to detect the findings that may be subtle and transient. Plain radiographic evaluation of the distal radioulnar joint is very sensitive to slight variations in patient position, and CT is more accurate when pain or cast immobilization make positioning difficult or when there is associated distal radial deformity. Static carpal instability patterns are present on routine radiographs where examination of the lateral view provides the key to diagnosis. The relations between the longitudinal axes of the radius, lunate, capitate, and scaphoid form the basis for classification of these instabilities. In dynamic carpal instability, routine radiographs are normal. The instability is demonstrated only with positional change or manipulation. Motion views can be very helpful, although direct observation of wrist motion on videotape fluoroscopy is the key to the diagnosis of dynamic instability. MR imaging motion studies provide better soft tissue definition and may show subtle changes in the triangular-fibrocartilage-associated distal radioulnar instability, as well as periarticular tendon subluxation about the wrist. The clinical role of MR imaging in the evaluation of wrist motion has yet to be clearly defined.

  1. Whole-body predictors of wrist shot accuracy in ice hockey: a kinematic analysis.

    Science.gov (United States)

    Michaud-Paquette, Yannick; Magee, Patrick; Pearsall, David; Turcotte, René

    2011-03-01

    The purpose of this study was to identify joint angular kinematics that corresponds to shooting accuracy in the stationary ice hockey wrist shot. Twenty-four subjects participated in this study, each performing 10 successful shots on four shooting targets. An eight-camera infra-red motion capture system (240 Hz), along with passive reflective markers, was used to record motion of the joints, hockey stick, and puck throughout the performance of the wrist shot. A multiple regression analysis was carried out to examine whole-body kinematic variables with accuracy scores as the dependent variable. Significant accuracy predictors were identified in the lower limbs, torso and upper limbs. Interpretation of the kinematics suggests that characteristics such as a better stability of the base of support, momentum cancellation, proper trunk orientation and a more dynamic control of the lead arm throughout the wrist shot movement are presented as predictors for the accuracy outcome. These findings are substantial as they not only provide a framework for further analysis of motor control strategies using tools for accurate projection of objects, but more tangibly they may provide a comprehensive evidence-based guide to coaches and athletes for planned training to improve performance. PMID:21560748

  2. [Penetrating abdominal wounds. Apropos of 330 cases].

    Science.gov (United States)

    Nejjar, M; Bennani, S; Zerouali, O N

    1991-01-01

    Penetrating abdominal wounds are frequent and serious. 330 cases have been treated in the Department of Emergencies and visceral Surgery at Averroes Hospital of Casablanca from 1980 to 1990. The predominance of male sex is noted, and these wounds are always the result of aggression by white arm. All patients have been operated, the white laparotomy rate is of 36%. The classic interventionist attitude is still recommended in spite of this high rate, because our present conditions can't permit us a rigorous watching. According to abdominal lesions, the different interventions are reviewed, and their indications are detailed.

  3. Adaptive motion artifact reducing algorithm for wrist photoplethysmography application

    Science.gov (United States)

    Zhao, Jingwei; Wang, Guijin; Shi, Chenbo

    2016-04-01

    Photoplethysmography (PPG) technology is widely used in wearable heart pulse rate monitoring. It might reveal the potential risks of heart condition and cardiopulmonary function by detecting the cardiac rhythms in physical exercise. However the quality of wrist photoelectric signal is very sensitive to motion artifact since the thicker tissues and the fewer amount of capillaries. Therefore, motion artifact is the major factor that impede the heart rate measurement in the high intensity exercising. One accelerometer and three channels of light with different wavelengths are used in this research to analyze the coupled form of motion artifact. A novel approach is proposed to separate the pulse signal from motion artifact by exploiting their mixing ratio in different optical paths. There are four major steps of our method: preprocessing, motion artifact estimation, adaptive filtering and heart rate calculation. Five healthy young men are participated in the experiment. The speeder in the treadmill is configured as 12km/h, and all subjects would run for 3-10 minutes by swinging the arms naturally. The final result is compared with chest strap. The average of mean square error (MSE) is less than 3 beats per minute (BPM/min). Proposed method performed well in intense physical exercise and shows the great robustness to individuals with different running style and posture.

  4. Stiffness, not inertial coupling, determines path curvature of wrist motions.

    Science.gov (United States)

    Charles, Steven K; Hogan, Neville

    2012-02-01

    When humans rotate their wrist in flexion-extension, radial-ulnar deviation, and combinations, the resulting paths (like the path of a laser pointer on a screen) exhibit a distinctive pattern of curvature. In this report we show that the passive stiffness of the wrist is sufficient to account for this pattern. Simulating the dynamics of wrist rotations using a demonstrably realistic model under a variety of conditions, we show that wrist stiffness can explain all characteristics of the observed pattern of curvature. We also provide evidence against other possible causes. We further demonstrate that the phenomenon is robust against variations in human wrist parameters (inertia, damping, and stiffness) and choice of model inputs. Our findings explain two previously observed phenomena: why faster wrist rotations exhibit more curvature and why path curvature rotates with pronation-supination of the forearm. Our results imply that, as in reaching, path straightness is a goal in the planning and control of wrist rotations. This requires humans to predict and compensate for wrist dynamics, but, unlike reaching, nonlinear inertial coupling (e.g., Coriolis acceleration) is insignificant. The dominant term to be compensated is wrist stiffness. PMID:22131378

  5. Abdominal Pain or Cramping

    Science.gov (United States)

    ... Body & lifestyle changes > Abdominal pain or cramping Abdominal pain or cramping E-mail to a friend Please ... signs of severe pain. What causes mild belly pain in pregnancy? There are different causes for mild ...

  6. Maximal dynamic grip force and wrist torque: the effects of gender, exertion direction, angular velocity, and wrist angle.

    Science.gov (United States)

    Morse, Jonathan L; Jung, Myung-Chul; Bashford, Gregory R; Hallbeck, M Susan

    2006-11-01

    The objective of this study was to examine the effects of gender, exertion direction, angular velocity and wrist angle on simultaneous grip force and wrist torque under the isokinetic condition. The study used 20 participants (10 males and 10 females) and included 6 angular velocities (15, 30, 45, 60, 75, and 90 degrees /s) and 2 wrist exertion directions (flexion and extension) over the wrist range of motion of 70 degrees flexion to 60 degrees extension in 5 degrees increments. Similar to other studies, males and flexion exertion produced larger forces than females and extension exertion, respectively. However, the largest forces were generated at near extreme flexion of the wrist and the dependent variable of angular velocity was not practically significant. These results can contribute to the evaluation of cumulative trauma syndromes, but there is a need for more research on the dynamic measures of the hand and wrist complex and for standard development for dynamic force measurement. PMID:16442072

  7. Magnetic resonance imaging for the wrist joint of the coal miners in vibration department

    Energy Technology Data Exchange (ETDEWEB)

    Zhao, X.Z.; Liu, R.L.; Hu, S.D.; Zhang, W.; Xu, W.X.; Ge, L.X. [Central Hospital of Zaozhuang Mine Corporation, Zaozhuang (China)

    2006-04-15

    To study the magnetic resonance imaging (MRI) in the wrist joint of coal miners who work in excavation and vibration department. Forty-three coal miners with the hand-arm vibration disease served as the observation group while 20 workers who were not working in the vibration department acted as the control group. The patients in the observation group were divided into five subgroups according to the time when they received vibration. The regularity of the development of signs and symptoms of MRI was observed and analyzed. The hydroarthrosis was most found in MRI. There were significant difference in hydroarthrosis osteoporosis and osteomyelitis between the observation group and the control group. The edema of bone marrow and the avascular necrosis of ossa carpi were found only in the observation group and not found in the control group. The hydroarthrosis and the edema of bone marrow occurred most in the early stage of vibration. The signal in the edema of the bone marrow of the distal end of the radius was decreased in the GE sequence with the specificity. Changes in the wrist joint occur in the early stage of the vibration work, and can be found in the MRI. The edema of the bone marrow of the distal end of the radius is of great value in the diagnosis of the hand-arm vibration disease.

  8. Motor control impairment of the contralateral wrist in patients with unilateral chronic wrist pain

    NARCIS (Netherlands)

    Smeulders, MJC; Kreulen, M; Hage, JJ; Ritt, MJPF; Mulder, T

    2002-01-01

    Objective: Assessment of the quality of fine motor control in patients with unilateral chronic wrist pain seldom focuses on the possibility that control of movements is effector independent at the cerebral level. This mechanism may be involved in an impairment of motor function in the unaffected wri

  9. Wrist-worn pervasive gaze interaction

    DEFF Research Database (Denmark)

    Hansen, John Paulin; Lund, Haakon; Biermann, Florian;

    2016-01-01

    This paper addresses gaze interaction for smart home control, conducted from a wrist-worn unit. First we asked ten people to enact the gaze movements they would propose for e.g. opening a door or adjusting the room temperature. On basis of their suggestions we built and tested different versions...... selection. Their subjective evaluations were positive with regard to the speed of the interaction. We conclude that gaze gesture input seems feasible for fast and brief remote control of smart home technology provided that robustness of tracking is improved....

  10. Remote revascularization of abdominal wall transplants using the forearm.

    Science.gov (United States)

    Giele, H; Bendon, C; Reddy, S; Ramcharan, R; Sinha, S; Friend, P; Vaidya, A

    2014-06-01

    Primary abdominal wall closure following small bowel transplantation is frequently impossible due to contraction of the abdominal domain. Although abdominal wall transplantation was reported 10 years ago this, technique has not been widely adopted, partly due to its complexity, but largely because of concerns that storing the abdominal allograft until the end of a prolonged intestinal transplant procedure would cause severe ischemia-reperfusion injury. We report six cases of combined small bowel and abdominal wall transplantation where the ischemic time was minimized by remotely revascularizing the abdominal wall on the forearm vessels, synchronous to the intestinal procedure. When the visceral transplant was complete, the abdominal wall was removed from the forearm and revascularized on the abdomen (n = 4), or used to close the abdomen while still vascularized on the forearm (n = 2). Primary abdominal wall closure was achieved in all. Mean cold ischemia was 305 min (300-330 min), and revascularization on the arm was 50 min (30-60 min). Three patients had proven abdominal wall rejection, all treated successfully. Immediate revascularization of the abdominal wall allograft substantially reduces cold ischemia without imposing constraints on the intestinal transplant. Reducing storage time may also have benefits with respect to ischemia-reperfusion-related graft immunogenicity. PMID:24797611

  11. [A woman with acute pain and swelling of her wrist

    NARCIS (Netherlands)

    Ridder, J.A. de; Koning, G.G.

    2015-01-01

    After hyperextension of both her wrists, a 39-year-old woman, who used coumarin derivatives for a known antiphospholipid syndrome, had acute pain and swelling of the left wrist. She had symptoms of an acute carpal tunnel syndrome. MRI revealed a hematoma compressing the median nerve in the carpal tu

  12. 21 CFR 888.3780 - Wrist joint polymer constrained prosthesis.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Wrist joint polymer constrained prosthesis. 888.3780 Section 888.3780 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN... constrained prosthesis. (a) Identification. A wrist joint polymer constrained prosthesis is a device made...

  13. Activity of identified wrist-related pallidal neurons during step and ramp wrist movements in the monkey.

    Science.gov (United States)

    Hamada, I; DeLong, M R; Mano, N

    1990-12-01

    1. The activity of globus pallidus (GP) neurons (n = 1,117) was studied in two monkeys to reexamine the relation of neuronal activity to movement type (slow vs. fast) while they performed both a visually guided step and ramp wrist tracking task. To select neurons specifically related to wrist movements, we employed both a somatosensory examination of individual body parts and a statistical analysis of the strength of temporal coupling of neuronal discharges to active wrist movement. 2. Neuronal responses to somatosensory stimulation were studied in 1,000 high-frequency GP neurons, of which 686 exhibited clear responses to manipulation of body parts. Of the latter, 336 responded to passive manipulation of forelimb joints and 58 selectively to passive flexion or extension of the wrist. 3. In the external segment of GP (GPe), most neurons responding to passive wrist movement were found to be clustered in four to five adjacent, closely positioned (separated by 200 microns) tracks in single coronal planes. The clusters were irregular in shape with a maximal width of 800-1,000 microns. Separate clusters of neurons responsive to passive wrist movement were identified in planes 3 mm apart in one monkey and in planes 500 microns apart in the other. Multiple clusters of neurons were also found for neurons responsive to joints other than the wrist. These findings suggest a more discrete and complex representation of individual joints in the primate GP than previously conceived. 4. During the performance of the wrist flexion and extension task, 92 neurons showed clear and consistent changes in activity. For these neurons we measured, with a statistical method on a trial-by-trial basis, the strength of temporal coupling between the onset of active wrist movement and the onset of change in neuronal discharge rate. Fifteen neurons showed changes in activity time-locked to the onset of active wrist movement. 5. Twelve pallidal neurons were classified as "wrist-related" based on

  14. Radiological evaluation of the skeleton: traumatology of the distal forearm, wrist, and hand; Radiologische Skelettdiagnostik: Traumatologie des distalen Unterarmes, der Handgelenke und der Hand

    Energy Technology Data Exchange (ETDEWEB)

    Neumann, K. [Universitaetsklinikum Essen (Germany). Zentralinstitut fuer Roentgendiagnostik; Langer, R. [Universitaetsklinikum Essen (Germany). Zentralinstitut fuer Roentgendiagnostik

    1996-07-01

    Plain X-ray films including some special radiographic views are still the basis of the radiological evaluation of injuries of the distal forearm, the wrist, and the hand. Especially, in the diagnosis of fractures of the distal radius the exact positioning of the arm and hand is essential. For the description of fractures of the distal forearm the AO classification of fractures should be used, which is comprehensive and universally applicable. Conventional tomography and computed tomography (CT) of the radio-ulnar joint and the wrist are used in patients with persisting complaints or equivocal findings on plain radiographs, and difficult anatomical situations. Suspected ligamentous injuries of the wrist including tears of the triangular fibrocartilage complex (TFCC) are evaluated by wrist arthrography or magnetic resonance imaging (MRI), the latter requiring a highly skilled imaging and interpretation technique. MRI is the method of choice for the detection of osteonecrosis. Ultrasound examinations are of minor importance in the work up of wrist and hand injuries. (orig.) [Deutsch] Fuer die radiologische Beurteilung von Verletzungen des distalen Unterarmes, des Handgelenkes und der Hand steht die konventionelle Roentgenuntersuchung einschliesslich einiger Spezialeinstellungen nach wie vor im Vordergrund. Bei der Beschreibung insbesondere der distalen Radiusfrakturen sollten die historische Benennung oder aeltere Einteilungen zugunsten der allgemeingueltigen und umfassenderen AO-Klassifikation verlassen werden. Die Computertomographie und Magnetresonanztomographie kommen in der Frakturdiagnostik bei unklaren anatomischen Verhaeltnissen oder konventionell nicht zufriedenstellend erklaerbaren Beschwerden zur Anwendung. Vermutete ligamentaere Verletzungen der Handwurzel lassen sich arthrographisch oder magnetresonanztomographisch abklaeren. (orig.)

  15. Management of the spastic wrist and hand in cerebral palsy.

    Science.gov (United States)

    Leafblad, Nels D; Van Heest, Ann E

    2015-05-01

    Research from the last 5 years on the pathophysiology and treatment of upper extremity sequelae of cerebral palsy (CP) is presented. The development of new treatments of CP-affected limbs, utilizing the brain's inherent neuroplasticity, remains an area of promising and active research. Functional magnetic resonance imaging scans have evaluated the role of neuroplasticity in adapting to the initial central nervous system insult. Children with CP appear to have greater recruitment of the ipsilateral brain for motor and sensory functions of the affected upper limb. Studies have also shown that constraint-induced movement therapy results in localized increase in gray matter volume of the sensorimotor cortex contralateral to the affected arm targeted during rehabilitation. Recent therapy interventions have emphasized the role of home therapy programs, the transient effects of splinting, and the promise of constraint-induced movement therapy and bimanual hand training. The use of motion laboratory analysis to characterize the movement pattern disturbances in children with CP continues to expand. Classification systems for CP upper limb continue to expand and improve their reliability, including use of the House Classification, the Manual Ability Classification System, and the Shriner's Hospital Upper Extremity Evaluation. Surgical outcomes have greater patients' satisfaction when they address functional limitations, also in addition to aesthetics, which may improve patients' self-esteem. Surgical techniques for elbow, wrist, fingers, and thumb continue to be refined. Research into each of these areas continues to expand our understanding of the nervous system insults that cause CP, how they may be modified, and how hand surgeons can continue to serve patients by improving their upper limb function and aesthetics. PMID:25841769

  16. [Arthroscopy-assisted management of wrist fractures].

    Science.gov (United States)

    Deiler, S; Häberle, S; Quentmeier, P; Biberthaler, P; Ahrens, P

    2013-04-01

    Distal radius fractures are the most common fractures in humans and early surgical intervention with modern plating systems is becoming increasingly more established to avoid secondary dislocation. Even fractures with slight dislocations are adequately stabilized and the affinity for surgical intervention and plating procedures is applied to secure these simple fractures. In this aspect the surgical indications are significantly dependent on X-ray examination results. Further diagnostics with respect to ligamentous and soft tissue injury are the exception although the impact energy which creates osseus fractures is sufficient by far to destroy functional soft tissue, cartilage and ligaments. The ongoing development of wrist arthroscopy enables new possibilities especially concerning concomitant articular involvement of distal radius fractures. Arthroscopy-assisted reduction and stabilization as well as minimally invasive soft tissue repair and loose body removal seem to be adequate methods to improve the surgical treatment of distal radius fractures. PMID:23515646

  17. Harmonic analysis of wrist mechanism of robot manipulator

    Science.gov (United States)

    Akbar, Shaik; Navuri, Karteek; Eswara Kumar, A.; Prakash, D.

    2016-09-01

    Wrist mechanism is a part of robot manipulator which is used to provide the pitch and yaw motions to the end effectors for orienting the loads carried by the end effectors. The wrist mechanism is subjected to different types of vibrations because of the various working conditions. Due to these vibrations wrist mechanism experience higher deformations and stresses; this causes failure of wrist mechanism. It is important to study the dynamic behaviour of the wrist mechanism under different loads before adopting in the application. The structure of the wrist mechanism is modelled in the ANSYS Workbench software and analysed for harmonic loads. Proper boundary conditions, mesh and connections between links& pins are assigned to the wrist mechanism assembly. From the present work, peak deformations of links and pins are occurred at 569.83Hz. Further, the link are analysed with 3D composites those are carbon epoxy and E-glass epoxy. It is observed that carbon epoxy shows better stiffness than E-Glass epoxy and it has weight reduction of 13.76% compared with metals.

  18. Ganglion cysts in the paediatric wrist: magnetic resonance imaging findings

    International Nuclear Information System (INIS)

    The majority of published literature on ganglion cysts in children has been from a surgical perspective, with no dedicated radiologic study yet performed. Our aim was to assess the magnetic resonance (MR) imaging appearance of ganglion cysts in a series of paediatric MR wrist examinations. Ninety-seven consecutive paediatric MR wrist examinations were retrospectively reviewed for the presence of ganglion cysts. Only those studies with wrist ganglia were included. Cysts were assessed for location, size, internal characteristics and secondary effect(s). Forty-one ganglion cysts (2-32 mm in size) were seen in 35/97 (36%) patients (24 female, 11 male), mean age: 13 years 11 months (range: 6 years 3 months-18 years). The majority were palmar (63.4%) with the remainder dorsal. Of the cysts, 43.9% were related to a wrist ligament(s), 36.6% to a joint and 17.1% to the triangular fibrocartilage complex. Of the patients, 91.4% had wrist symptoms: pain (n=29, 82.9%), swelling (n=7, 20%) and/or palpable mass (n=4, 11.4%); 71.4% patients had significant additional wrist abnormalities. Ganglion cysts were frequently found in children referred for wrist MRI. (orig.)

  19. Ganglion cysts in the paediatric wrist: magnetic resonance imaging findings

    Energy Technology Data Exchange (ETDEWEB)

    Bracken, Jennifer; Bartlett, Murray [Royal Children' s Hospital, Medical Imaging Department, Melbourne, VIC (Australia)

    2013-12-15

    The majority of published literature on ganglion cysts in children has been from a surgical perspective, with no dedicated radiologic study yet performed. Our aim was to assess the magnetic resonance (MR) imaging appearance of ganglion cysts in a series of paediatric MR wrist examinations. Ninety-seven consecutive paediatric MR wrist examinations were retrospectively reviewed for the presence of ganglion cysts. Only those studies with wrist ganglia were included. Cysts were assessed for location, size, internal characteristics and secondary effect(s). Forty-one ganglion cysts (2-32 mm in size) were seen in 35/97 (36%) patients (24 female, 11 male), mean age: 13 years 11 months (range: 6 years 3 months-18 years). The majority were palmar (63.4%) with the remainder dorsal. Of the cysts, 43.9% were related to a wrist ligament(s), 36.6% to a joint and 17.1% to the triangular fibrocartilage complex. Of the patients, 91.4% had wrist symptoms: pain (n=29, 82.9%), swelling (n=7, 20%) and/or palpable mass (n=4, 11.4%); 71.4% patients had significant additional wrist abnormalities. Ganglion cysts were frequently found in children referred for wrist MRI. (orig.)

  20. Clinical impact of MRI in acute wrist fractures

    Energy Technology Data Exchange (ETDEWEB)

    Mack, Martin G.; Keim, Sabine; Balzer, Joern O.; Schwarz, Wolfram; Hochmuth, Kathrin; Vogl, Thomas J. [Department of Diagnostic and Interventional Radiology, Universitaetsklinikum Frankfurt/Main, Theodor-Stern-Kai 7, 60590 Frankfurt/Main (Germany); Windolf, Joachim [Department of Traumatology and Reconstructive Surgery, University of Hamburg, Martinistrasse 52, 20246 Hamburg (Germany)

    2003-03-01

    The purpose of this study was to evaluate the clinical impact of MRI in the early diagnosis of wrist trauma. High-resolution MR imaging was performed on a 1.5-T unit (Symphony Quantum, Siemens, Erlangen, Germany) using coronal and axial T1- and T2-weighted fat-saturated turbo-spin-echo sequence via a dedicated wrist coil within a mean of 6.6 days after initial radiographs in 54 patients (56 wrists) with clinical suspicion of wrist fractures and normal plain or indistinct radiographs. Initial radiographs were evaluated independently by two senior radiologists and the hand surgeon without knowledge of the MRI findings. The initial treatment protocol was based on evaluation of plain films and clinical findings by the hand surgeon. Treatment protocol was changed after MRI examination if necessary. In 31 of 56 wrists MRI findings resulted in a change of diagnosis. There were false-positive diagnoses on plain radiographs in nearly one half (n=25) of the patients. False-negative diagnoses on plain radiographs resulted in 6 cases. Magnetic resonance imaging detected additional injuries of soft tissue in more than one third (n=20). In 22 of 56 wrists the period of immobilization could be shortened or ended, in 12 of 56 it was prolonged, and in 3 of 56 a surgical intervention was necessary. In 19 wrists MRI had no therapeutic consequences. Our data demonstrate the high clinical impact of MRI in the detection of acute wrist fractures. We recommend MRI of the wrist immediately on the day of trauma if there is clinical suspicion and normal plain radiographs. Accurate diagnosis by MRI examination within the first days following trauma may reduce economic costs due to shortened immobilization time in cases with a suspected fracture but plain radiographs. (orig.)

  1. Midcarpal hemiarthroplasty for wrist arthritis: rationale and early results.

    Science.gov (United States)

    Vance, Michael C; Packer, Greg; Tan, David; Crisco, J J Trey; Wolfe, Scott W

    2012-08-01

    Midcarpal hemiarthroplasty is a novel motion-preserving treatment for radiocarpal arthritis and is an alternative to current procedures that provide pain relief at the expense of wrist biomechanics and natural motion. It is indicated primarily in active patients with a well-preserved distal row and debilitating arthritic symptoms. By resurfacing the proximal carpal row, midcarpal arthroplasty relieves pain while preserving the midcarpal articulation and the anatomic center of wrist rotation. This technique has theoretical advantages when compared with current treatment options (i.e., arthrodesis and total wrist arthroplasty) since it provides coupled wrist motion, preserves radial length, is technically simple, and avoids the inherent risks of nonunion and distal component failure. The KinematX midcarpal hemiarthroplasty has an anatomic design and does not disrupt the integrity of the wrist ligaments. We have implanted this prosthesis in nine patients with promising early results. The indications for surgery were as follows: scapholunate advanced collapse wrist (three), posttraumatic osteoarthritis (three), inflammatory arthritis (two), and Keinböck disease (one). Prospective data has been collected and the results are preliminary given the infancy of the procedure. The mean follow-up was 30.9 weeks (range: 16 to 56 weeks). The mean Mayo wrist score increased from 31.9 preoperatively to 58.8 (p manipulation for wrist stiffness. There was no evidence of prosthetic loosening or capitolunate narrowing. The procedure is simple (average surgical time was 49 minutes) and maintains coupled wrist motion through preservation of the midcarpal articulation. The preliminary data show that it appears safe but considerably longer follow-up is required before conclusions can be drawn as to its durability, reliability, and overall success. The level of evidence for this study is therapeutic level IV (case series).

  2. Two-Armed, Mobile, Sensate Research Robot

    Science.gov (United States)

    Engelberger, J. F.; Roberts, W. Nelson; Ryan, David J.; Silverthorne, Andrew

    2004-01-01

    The Anthropomorphic Robotic Testbed (ART) is an experimental prototype of a partly anthropomorphic, humanoid-size, mobile robot. The basic ART design concept provides for a combination of two-armed coordination, tactility, stereoscopic vision, mobility with navigation and avoidance of obstacles, and natural-language communication, so that the ART could emulate humans in many activities. The ART could be developed into a variety of highly capable robotic assistants for general or specific applications. There is especially great potential for the development of ART-based robots as substitutes for live-in health-care aides for home-bound persons who are aged, infirm, or physically handicapped; these robots could greatly reduce the cost of home health care and extend the term of independent living. The ART is a fully autonomous and untethered system. It includes a mobile base on which is mounted an extensible torso topped by a head, shoulders, and two arms. All subsystems of the ART are powered by a rechargeable, removable battery pack. The mobile base is a differentially- driven, nonholonomic vehicle capable of a speed >1 m/s and can handle a payload >100 kg. The base can be controlled manually, in forward/backward and/or simultaneous rotational motion, by use of a joystick. Alternatively, the motion of the base can be controlled autonomously by an onboard navigational computer. By retraction or extension of the torso, the head height of the ART can be adjusted from 5 ft (1.5 m) to 6 1/2 ft (2 m), so that the arms can reach either the floor or high shelves, or some ceilings. The arms are symmetrical. Each arm (including the wrist) has a total of six rotary axes like those of the human shoulder, elbow, and wrist joints. The arms are actuated by electric motors in combination with brakes and gas-spring assists on the shoulder and elbow joints. The arms are operated under closed-loop digital control. A receptacle for an end effector is mounted on the tip of the wrist and

  3. Robotic arm

    Science.gov (United States)

    Kwech, Horst

    1989-04-18

    A robotic arm positionable within a nuclear vessel by access through a small diameter opening and having a mounting tube supported within the vessel and mounting a plurality of arm sections for movement lengthwise of the mounting tube as well as for movement out of a window provided in the wall of the mounting tube. An end effector, such as a grinding head or welding element, at an operating end of the robotic arm, can be located and operated within the nuclear vessel through movement derived from six different axes of motion provided by mounting and drive connections between arm sections of the robotic arm. The movements are achieved by operation of remotely-controllable servo motors, all of which are mounted at a control end of the robotic arm to be outside the nuclear vessel.

  4. [Abdominal pregnancy, institutional experience].

    Science.gov (United States)

    Bonfante Ramírez, E; Bolaños Ancona, R; Simón Pereyra, L; Juárez García, L; García-Benitez, C Q

    1998-07-01

    Abdominal pregnancy is a rare entity, which has been classified as primary or secondary by Studiford criteria. A retrospective study, between January 1989 and December 1994, realized at Instituto Nacional de Perinatología, found 35,080 pregnancies, from which 149 happened to be ectopic, and 6 of them were abdominal. All patients belonged to a low income society class, age between 24 and 35 years, and average of gestations in 2.6. Gestational age varied from 15 weeks to 32.2 weeks having only one delivery at term with satisfactory postnatal evolution. One patient had a recurrent abdominal pregnancy, with genital Tb as a conditional factor. Time of hospitalization varied from 4 to 5 days, and no further patient complications were reported. Fetal loss was estimated in 83.4%. Abdominal pregnancy is often the sequence of a tubarian ectopic pregnancy an when present, it has a very high maternal mortality reported in world literature, not found in this study. The stated frequency of abdominal pregnancy is from 1 of each 3372, up to 1 in every 10,200 deliveries, reporting in the study 1 abdominal pregnancy in 5846 deliveries. The study had two characteristic entities one, the recurrence and two, the delivery at term of one newborn. Abdominal pregnancy accounts for 4% of all ectopic pregnancies. Clinical findings in abdominal pregnancies are pain, transvaginal bleeding and amenorrea, being the cardinal signs of ectopic pregnancy. PMID:9737070

  5. [Abdominal compartment syndrome].

    Science.gov (United States)

    Pottecher, T; Segura, P; Launoy, A

    2001-04-01

    French physicians dealing with abdominal emergencies are not very familiar with the abdominal compartment syndrome (ACS). Increased abdominal pressure has deleterious consequences on local (intestine, liver, kidney) circulation, leading to death in the absence of correct treatment. Abdominal trauma and ruptured aortic aneurism are the main causes of ACS. Clinical presentation may be misleading: respiratory failure, oliguria or circulatory symptoms are often predominant. Abdominal palpation is inefficient for evaluating intra-abdominal pressure (IAP); only measurement of cystic pressure allows precise evaluation of IAP. Abdominal decompression is the treatment of choice. It must be performed as soon as IAP exceeds 25 mmHg. The procedure may be risky with a high incidence of severe complications when ischaemic territories are reperfused. Recent data underline the importance of compensation of hypovolemia before decompression. Abdominal closure may necessitate various techniques (aponevrotomy, Bogota bags, etc.). At any rate, IAP must remain low at the end of the procedure. In case of suspicion of ACS, early measurement of IAP is mandatory. If pressure is over 25 mmHg, a decompressive procedure must be initiated. PMID:11340703

  6. White Paper: functionality and efficacy of wrist protectors in snowboarding—towards a harmonized international standard

    OpenAIRE

    Michel, Frank I; Schmitt, Kai-Uwe; Greenwald, Richard M.; Russell, Kelly; Simpson, Frank I; Schulz, David; Langran, Mike

    2013-01-01

    The wrist is the most frequently injured body region among snowboarders. Studies have shown that the risk of sustaining a wrist injury can be reduced by wearing wrist protection. Currently, there are a wide variety of wrist protection products for snowboarding on the market that offer a range of protective features. However, there are no minimum performance standards for snowboarding wrist protectors worldwide. The International Society for Skiing Safety convened a task force to develop a Whi...

  7. Wrist Energy Fuzzy Assist Cancer Engine – WE-FACE

    Directory of Open Access Journals (Sweden)

    Sharmila Begum M

    2013-04-01

    Full Text Available Promotion and propagation of Ancient Indian Medical System has been our aim, as we foresee the usefulness and cost effectiveness of traditional medical system. Even though there has been a tremendousadvancement in medical technology, the prediction or diagnosis of diseases are costlier than the treatment.Intelligence can be spotted out in each and every cell in an human body and this intelligence gets communicated throughout the body in the form of vibration which can be examined through Wrist Pulse Examination. Since this wrist pulse signals contains vital information which explicitly points out the pathologic changes in a human body. Here, we propose a new methodology named “Wrist Energy Fuzzy Assist Cancer Engine – WE-FACE”for prediction and diagnosis of diseases using fuzzy logic. We mainly focus on the prediction and diagnosis of cancer through wrist pulse signals with the use of appropriate sensors.

  8. The post-arthro-CT of the wrist clinical evaluation

    CERN Document Server

    Scheurecker, G

    2001-01-01

    To compare the diagnostic effectiveness of post-arthro-CT (PACT) and 3-compartment wrist arthrography (AG) both separate and combined versus wrist arthroscopy for scapho-lunate ligament (SLL), luno-triquetral ligament (LTL) and triangular fibrocartilage (TFC) defects and chondromalacia of the carpal bones. Material and methods: in 58 patients (16-69 years) the affected wrist was examined initially by conventional 3-compartment wrist arthrography with digital subtraction technique during injection followed by digital stress images. Afterwards spiral arthro-CT was performed in the semi-coronal and axial plane with 1 mm slice thickness and secondary true-coronal and sagittal reconstructions. Within 1 month arthroscopy was performed in general anesthesia utilizing standard joint entry points combined with routine digital picture archiving. All examinations were evaluated for SLL, LTL and TFC defects, PACT and AS for ChM too. Results: AG versus AS: the following detection rates were observed (AG and AS positive/AG...

  9. Wrist display concept demonstration based on 2-in. color AMOLED

    Science.gov (United States)

    Meyer, Frederick M.; Longo, Sam J.; Hopper, Darrel G.

    2004-09-01

    The wrist watch needs an upgrade. Recent advances in optoelectronics, microelectronics, and communication theory have established a technology base that now make the multimedia Dick Tracy watch attainable during the next decade. As a first step towards stuffing the functionality of an entire personnel computer (PC) and television receiver under a watch face, we have set a goal of providing wrist video capability to warfighters. Commercial sector work on the wrist form factor already includes all the functionality of a personal digital assistant (PDA) and full PC operating system. Our strategy is to leverage these commercial developments. In this paper we describe our use of a 2.2 in. diagonal color active matrix light emitting diode (AMOLED) device as a wrist-mounted display (WMD) to present either full motion video or computer generated graphical image formats.

  10. Recognizing upper limb movements with wrist worn inertial sensors using k-means clustering classification.

    Science.gov (United States)

    Biswas, Dwaipayan; Cranny, Andy; Gupta, Nayaab; Maharatna, Koushik; Achner, Josy; Klemke, Jasmin; Jöbges, Michael; Ortmann, Steffen

    2015-04-01

    In this paper we present a methodology for recognizing three fundamental movements of the human forearm (extension, flexion and rotation) using pattern recognition applied to the data from a single wrist-worn, inertial sensor. We propose that this technique could be used as a clinical tool to assess rehabilitation progress in neurodegenerative pathologies such as stroke or cerebral palsy by tracking the number of times a patient performs specific arm movements (e.g. prescribed exercises) with their paretic arm throughout the day. We demonstrate this with healthy subjects and stroke patients in a simple proof of concept study in which these arm movements are detected during an archetypal activity of daily-living (ADL) - 'making-a-cup-of-tea'. Data is collected from a tri-axial accelerometer and a tri-axial gyroscope located proximal to the wrist. In a training phase, movements are initially performed in a controlled environment which are represented by a ranked set of 30 time-domain features. Using a sequential forward selection technique, for each set of feature combinations three clusters are formed using k-means clustering followed by 10 runs of 10-fold cross validation on the training data to determine the best feature combinations. For the testing phase, movements performed during the ADL are associated with each cluster label using a minimum distance classifier in a multi-dimensional feature space, comprised of the best ranked features, using Euclidean or Mahalanobis distance as the metric. Experiments were performed with four healthy subjects and four stroke survivors and our results show that the proposed methodology can detect the three movements performed during the ADL with an overall average accuracy of 88% using the accelerometer data and 83% using the gyroscope data across all healthy subjects and arm movement types. The average accuracy across all stroke survivors was 70% using accelerometer data and 66% using gyroscope data. We also use a Linear

  11. Phantom hand and wrist movements in upper limb amputees are slow but naturally controlled movements.

    Science.gov (United States)

    De Graaf, J B; Jarrassé, N; Nicol, C; Touillet, A; Coyle, T; Maynard, L; Martinet, N; Paysant, J

    2016-01-15

    After limb amputation, patients often wake up with a vivid perception of the presence of the missing limb, called "phantom limb". Phantom limbs have mostly been studied with respect to pain sensation. But patients can experience many other phantom sensations, including voluntary movements. The goal of the present study was to quantify phantom movement kinematics and relate these to intact limb kinematics and to the time elapsed since amputation. Six upper arm and two forearm amputees with various delays since amputation (6months to 32years) performed phantom finger, hand and wrist movements at self-chosen comfortable velocities. The kinematics of the phantom movements was indirectly obtained via the intact limb that synchronously mimicked the phantom limb movements, using a Cyberglove® for measuring finger movements and an inertial measurement unit for wrist movements. Results show that the execution of phantom movements is perceived as "natural" but effortful. The types of phantom movements that can be performed are variable between the patients but they could all perform thumb flexion/extension and global hand opening/closure. Finger extension movements appeared to be 24% faster than finger flexion movements. Neither the number of types of phantom movements that can be executed nor the kinematic characteristics were related to the elapsed time since amputation, highlighting the persistence of post-amputation neural adaptation. We hypothesize that the perceived slowness of phantom movements is related to altered proprioceptive feedback that cannot be recalibrated by lack of visual feedback during phantom movement execution.

  12. Intrasynovial lipoma causing trigger wrist and carpal tunnel syndrome.

    Science.gov (United States)

    Imai, Shinji; Kodama, Narihito; Matsusue, Yoshitaka

    2008-01-01

    Triggering of the flexor tendon at the wrist is rare. We report a case of intrasynovial lipoma that caused a trigger wrist. As far as we know it is unique in that the intrasynovial lipoma simultaneously caused carpal tunnel syndrome. The massive tenosynovitis and adhesion of flexors tendons after the locking of the intrasynovial lipoma may have resulted from inflammation caused by attrition within the carpal tunnel.

  13. Diagnostic and therapeutic arthroscopy of the wrist: clinical experience

    OpenAIRE

    Tuzuner, Serdar; Ozdemir, Hakan; Gur, Semih

    2004-01-01

    Wrist arthroscopy can facilitate early definitive diagnosis of soft tissue, carpal bone cartilage, the triangular fibrocartilage complex and carpal ligaments injuries. Many such injuries can be treated successfully with minimally invasive arthroscopic techniques, reducing the morbidity associated with surgical exposure and permitting earlier return to work. Between November 1991 and May 1996 19 wrist arthroscopies were performed in the Department of Orthopedics and Trauma Surgery, University ...

  14. Midcarpal Hemiarthroplasty for Wrist Arthritis: Rationale and Early Results

    OpenAIRE

    Vance, Michael C.; Packer, Greg; Tan, David; Crisco, J.J. Trey; Wolfe, Scott W.

    2012-01-01

    Midcarpal hemiarthroplasty is a novel motion-preserving treatment for radiocarpal arthritis and is an alternative to current procedures that provide pain relief at the expense of wrist biomechanics and natural motion. It is indicated primarily in active patients with a well-preserved distal row and debilitating arthritic symptoms. By resurfacing the proximal carpal row, midcarpal arthroplasty relieves pain while preserving the midcarpal articulation and the anatomic center of wrist rotation. ...

  15. MRI-identified abnormalities and wrist range of motion in asymptomatic versus symptomatic computer users

    Directory of Open Access Journals (Sweden)

    Pavlosky William F

    2010-11-01

    Full Text Available Abstract Background Previous work has shown an association between restricted wrist range of motion (ROM and upper extremity musculoskeletal disorders in computer users. We compared the prevalence of MRI-identified wrist abnormalities and wrist ROM between asymptomatic and symptomatic computer users. Methods MR images at 1.5 T of both wrists were obtained from 10 asymptomatic controls (8 F, 2 M and 14 computer users (10 F, 4 M with chronic wrist pain (10 bilateral; 4 right-side. Maximum wrist range of motion in flexion and radioulnar deviation was measured with an electrogoniometer. Results Extraosseous ganglia were identified in 66.6% of asymptomatic wrists and in 75% of symptomatic wrists. Intraosseous ganglia were identified in 45.8% of asymptomatic wrists and in 75% of symptomatic wrists, and were significantly (p p Conclusions This appears to be the first MRI study of wrist abnormalities in computer users. This study demonstrates that a variety of wrist abnormalities are common in computer users and that only intraosseous ganglia prevalence and size differed between asymptomatic and symptomatic wrists. Flexion was restricted in the dominant wrist of the symptomatic group, but the correlation between wrist flexion and intraosseous ganglion burden did not reach significance. Flexion restriction may be an indicator of increased joint loading, and identifying the cause may help to guide preventive and therapeutic interventions.

  16. Ultrasonographic Diagnosis of the Hand and Wrist Joint

    Energy Technology Data Exchange (ETDEWEB)

    Yang, Ik; Choi, Sang Hee [Kangnnam Sacredheart Hospital, Hallym University Medical Center, Seoul (Korea, Republic of)

    2006-12-15

    Ultrasonographic examination of the hand and wrist is simple and easy due to their superficial anatomy, and easy accessibility. Ultrasound is indicated to evaluate persistent pain and swelling when the radiographic examination is normal. Although their anatomy is simple, the pathologic conditions of the hand and wrist are quite diverse. Although plain radiographs, CT, arthrography, and MRI have traditionally been used to evaluate the hand and wrist, nowadays, ultrasound is now being ordered with increasing frequency to scan the hand and wrist as it is a cost-effective and accurate modality for the diagnosis of focal pathology in those areas. A high-frequency linear array transducer should be used to scan the upper extremity. Available transducers up to 12 MHz provide excellent resolution. Color and power Doppler images are useful in hyperemic changes and tumor vascularity. Sonographic panorama imaging also has the advantage of demonstrating the whole extension of the lesion and of enabling a dynamic study of the hand and wrist. This action during sonographic examination not only help to diagnosis to examiner to the anatomic structures, but also localize the pathologic process to a target organ. This chapter will describe the sonographic findings associated with the most common hand and wrist pathologic conditions

  17. [Inflammatory abdominal aortic aneurysm].

    Science.gov (United States)

    Ziaja, K; Sedlak, L; Urbanek, T; Kostyra, J; Ludyga, T

    2000-01-01

    The reported incidence of inflammatory abdominal aortic aneurysm (IAAA) is from 2% to 14% of patients with abdominal aortic aneurysm and the etiology of this disease is still discussed--according to the literature several pathogenic theories have been proposed. From 1992 to 1997 32 patients with IAAA were operated on. The patients were mostly symptomatic--abdominal pain was present in 68.75% cases, back pain in 31.25%, fever in 12.5% and weight loss in 6.25% of the operated patients. In all the patients ultrasound examination was performed, in 4 patients CT and in 3 cases urography. All the patients were operated on and characteristic signs of inflammatory abdominal aortic aneurysm like: thickened aortic wall, perianeurysmal infiltration or retroperitoneal fibrosis with involvement of retroperitoneal structures were found. In all cases surgery was performed using transperitoneal approach; in three cases intraoperatively contiguous abdominal organs were injured, which was connected with their involvement into periaortic inflammation. In 4 cases clamping of the aorta was done at the level of the diaphragmatic hiatus. 3 patients (9.37%) died (one patient with ruptured abdominal aortic aneurysm). Authors present diagnostic procedures and the differences in the surgical tactic, emphasizing the necessity of the surgical therapy in patients with inflammatory abdominal aortic aneurysm.

  18. Abdominal tuberculosis: Imaging features

    Energy Technology Data Exchange (ETDEWEB)

    Pereira, Jose M. [Department of Radiology, Hospital de S. Joao, Porto (Portugal)]. E-mail: jmpjesus@yahoo.com; Madureira, Antonio J. [Department of Radiology, Hospital de S. Joao, Porto (Portugal); Vieira, Alberto [Department of Radiology, Hospital de S. Joao, Porto (Portugal); Ramos, Isabel [Department of Radiology, Hospital de S. Joao, Porto (Portugal)

    2005-08-01

    Radiological findings of abdominal tuberculosis can mimic those of many different diseases. A high level of suspicion is required, especially in high-risk population. In this article, we will describe barium studies, ultrasound (US) and computed tomography (CT) findings of abdominal tuberculosis (TB), with emphasis in the latest. We will illustrate CT findings that can help in the diagnosis of abdominal tuberculosis and describe imaging features that differentiate it from other inflammatory and neoplastic diseases, particularly lymphoma and Crohn's disease. As tuberculosis can affect any organ in the abdomen, emphasis is placed to ileocecal involvement, lymphadenopathy, peritonitis and solid organ disease (liver, spleen and pancreas). A positive culture or hystologic analysis of biopsy is still required in many patients for definitive diagnosis. Learning objectives:1.To review the relevant pathophysiology of abdominal tuberculosis. 2.Illustrate CT findings that can help in the diagnosis.

  19. Abdominal Pain Syndrome

    Science.gov (United States)

    ... inspection of a drop of urine), and urine culture for bacterial infection. Stools can be analyzed for ... Hepatitis C Inflammatory Bowel Disease Irritable Bowel Syndrome Obesity Digestive Health Topics Abdominal Pain Syndrome Belching, Bloating, ...

  20. Abdominal ultrasound (image)

    Science.gov (United States)

    Abdominal ultrasound is a scanning technique used to image the interior of the abdomen. Like the X-ray, MRI, ... it has its place as a diagnostic tool. Ultrasound scans use high frequency sound waves to produce ...

  1. Redundant sensorized arm+hand system for space telerobotized manipulation

    Science.gov (United States)

    Rovetta, Alberto; Cavestro, Paolo

    1989-01-01

    An integrated system, composed of an arm, a wrist, and a mechanical multifingered hand is treated. The hand is on development for possible application in telemanipulation, and is realized in separate parts. The redundancy of the degrees of freedom of the system, the sensors, the application of logical rules, and the supervision of teleoperators may be applied in order to have an optimum of reliability of the system in space telemanipulations.

  2. Imaging in Tuberculosis abdominal

    International Nuclear Information System (INIS)

    In this article we illustrate and discuss imaging features resulting from Tuberculosis abdominal affectation. We present patients evaluated with several imaging modalities who had abdominal symptoms and findings suggestive of granulomatous disease. Diagnosis was confirm including hystopatology and clinical outgoing. Cases involved presented many affected organs such as lymphatic system, peritoneum, liver, spleen, pancreas, kidneys, ureters, adrenal glands and pelvic organs Tuberculosis, Tuberculosis renal, Tuberculosis hepatic, Tuberculosis splenic Tomography, x-ray, computed

  3. Machine learning for activity recognition: hip versus wrist data

    International Nuclear Information System (INIS)

    Problem addressed: Wrist-worn accelerometers are associated with greater compliance. However, validated algorithms for predicting activity type from wrist-worn accelerometer data are lacking. This study compared the activity recognition rates of an activity classifier trained on acceleration signal collected on the wrist and hip. Methodology: 52 children and adolescents (mean age 13.7  ±  3.1 year) completed 12 activity trials that were categorized into 7 activity classes: lying down, sitting, standing, walking, running, basketball, and dancing. During each trial, participants wore an ActiGraph GT3X+ tri-axial accelerometer on the right hip and the non-dominant wrist. Features were extracted from 10-s windows and inputted into a regularized logistic regression model using R (Glmnet + L1). Results: Classification accuracy for the hip and wrist was 91.0% ± 3.1% and 88.4% ± 3.0%, respectively. The hip model exhibited excellent classification accuracy for sitting (91.3%), standing (95.8%), walking (95.8%), and running (96.8%); acceptable classification accuracy for lying down (88.3%) and basketball (81.9%); and modest accuracy for dance (64.1%). The wrist model exhibited excellent classification accuracy for sitting (93.0%), standing (91.7%), and walking (95.8%); acceptable classification accuracy for basketball (86.0%); and modest accuracy for running (78.8%), lying down (74.6%) and dance (69.4%). Potential Impact: Both the hip and wrist algorithms achieved acceptable classification accuracy, allowing researchers to use either placement for activity recognition. (paper)

  4. Wrist ultrasound analysis of patients with early rheumatoid arthritis

    Directory of Open Access Journals (Sweden)

    J.A. Mendonça

    2011-01-01

    Full Text Available In the present study, we evaluated 42 wrists using the semi-quantitative scales power Doppler ultrasound (PDUS and gray scale ultrasound (GSUS with scores ranging from 0 to 3 and correlated the results with clinical, laboratory and radiographic data. Twenty-one patients (17 women and 4 men with rheumatoid arthritis according to criteria of the American College of Rheumatology were enrolled in the study from September 2008 to July 2009 at Universidade Estadual de Campinas (UNICAMP. The average disease duration was 14 months. The patients were 66.6% Caucasians and 33.3% non-Caucasians, with a mean age of 42 and 41 years, respectively. A dorsal longitudinal scan was performed by ultrasound on the radiocarpal and midcarpal joints using GE LOGIQ XP-linear ultrasound and a high frequency (8-10 MHz transducer. All patients were X-rayed, and the Larsen score was determined for the joints, with grades ranging from 0 to V. This study showed significant correlations between clinical, sonographic and laboratory data: GSUS and swollen right wrist (r = 0.546, GSUS of right wrist and swelling of left wrist (r = 0.511, PDUS of right wrist and pain in left wrist (r = 0.436, PDUS of right wrist and C-reactive protein (r = 0.466. Ultrasound can be considered a useful tool in the diagnosis of synovitis in early rheumatoid arthritis mainly when the anti-cyclic citrullinated peptide and rheumatoid factor are negative, and can lead to an early change in the therapeutic decision.

  5. Kinematic synthesis of bevel-gear-type robotic wrist mechanisms

    Science.gov (United States)

    Lin, Chen-Chou

    Bevel-gear-type robotic wrist mechanisms are commonly used in industry. The reasons for their popularity are that they are compact, light-weight, and relatively inexpensive. However, there are singularities in their workspace, which substantially degrade their manipulative performance. The objective of this research is to develop an atlas of three-degree-of-freedom bevel-gear-type wrist mechanisms, and through dimensional synthesis to improve their kinematic performance. The dissertation contains two major parts: the first is structural analysis and synthesis, the other is kinematic analysis and dimensional synthesis. To synthesize the kinematic structures of bevel-gear-type wrist mechanisms, the kinematic structures are separated from their functional considerations. All kinematic structures which satisfy the mobility condition are enumerated in an unbiased, systematic manner. Then the bevel-gear-type wrist mechanisms are identified by applying the functional requirements. Structural analysis shows that a three-degree-of-freedom wrist mechanism usually consists of non-fractionated, two degree-of-freedom epicyclic gear train jointed with the base link. Therefore, the structural synthesis can be simplified into a problem of examining the atlas of non-fractionated, two-degree-of-freedom epicyclic gear trains. The resulting bevel-gear-type wrist mechanism has been categorized and evaluated. It is shown that three-degree-of-freedom, four-jointed wrist mechanisms are promising for further improving the kinematic performance. It is found that a spherical planetary gear train is necessarily imbedded in a three-degree-of-freedom, four-jointed wrist mechanism. Therefore, to study the workspace and singularity problems of three-degree-of-freedom four-jointed spherical wrist mechanisms, we have to study the trajectories of spherical planetary gear trains. The parametric equations of the trajectories and some useful geometric properties for the analysis and synthesis of

  6. Influence of the long term use of a computer on median, ulnar and radial sensory nerves in the wrist region

    Directory of Open Access Journals (Sweden)

    Belgin Bamac

    2014-12-01

    Full Text Available Objectives: Repetitive microtrauma or overuse injuries may often affect upper extremities of the long term computer users. The aim of this study was to compare sensory nerve conduction velocities (SNCV for median, radial and ulnar nerves in the wrist of computer users with the same parameters in controls who do not use computers regularly. Material and Methods: Twenty one male computer users (age: mean (M = 28.3 years ± standard deviation (SD = 7.5 years and 21 male control subjects (age: M±SD = 24.1±4.6 years were recruited for the study. Limb length and the perimeters of the dominant arm and forearm were measured for each subject. The neurophysiological study consisted of measuring sensory nerve conduction of the median, ulnar and radial nerves. Results: The sensory conduction velocities of both median and ulnar nerves were significantly delayed in the dominant arm of the computer users compared to the controls. In addition, sensory conduction velocity of the median nerve was significantly delayed in the dominant extremity of the computer users compared to their non-dominant extremity. Conclusions: This study shows that computer users have a tendency toward developing median and ulnar sensory nerve damage in the wrist region. Mechanism of delayed SNCV in the median and ulnar nerves may be due to sustained extension and ulnar deviation of the wrist during computer mouse use and typing. Reduced SNCV changes were more apparent on the dominant side of the median nerve. This may indicate the increased neural deficits related to an increased use of the dominant side. Further investigation is needed to determine how to reduce potential risk factors at this stage in order to prevent development of median or ulnar neuropathy in the long term computer users.

  7. Risk factors for hand-wrist disorders in repetitive work

    DEFF Research Database (Denmark)

    Thomsen, J. F.; Mikkelsen, S.; Andersen, JH;

    2007-01-01

    (wrist pain and palpation tenderness) were determined in 3123 employees in 19 industrial settings. With the use of questionnaires and video recordings of homogenous work tasks number of wrist movements, hand force requirements and wrist position were analysed as risk factors for hand-wrist disorders......, controlling for potential personal and psychosocial confounders. All participants were re-examined three times during a follow-up period of three years. RESULTS: Force but not repetition and position was related to hand-wrist pain and possible tendonitis in the baseline analyses showing an exposure......-response pattern. Odds ratios for the risk of hand pain was 1.7 (95% CI 1.3 to 2.2) and for possible tendonitis 1.9 (95% CI 1.1 to 3.3). There was no significant interaction between the ergonomic factors. In the follow-up analyses force remained a risk factor for hand pain (OR 1.4, 95% CI 1.1 to 1...

  8. MDCT arthrography of the wrist: Diagnostic accuracy and indications

    International Nuclear Information System (INIS)

    Purpose: To evaluate the diagnostic accuracy and indications of arthrography with Multidetector Computed Tomography (arthro-MDCT) of the wrist in patients with absolute or relative contraindications to magnetic resonance imaging (MRI) studies and in patients with periarticular metal implants using diagnostic arthroscopy as the gold standard. Materials and methods: After intra-articular injection of iodixanol and volumetric acquisition, 43 wrists in patients of both genders (18 females, 25 males, age range 32-60 years) were examined with a 16-detector-row CT scanner. Fifteen patients had prior wrist surgery. The patients had arthralgia, degenerative and traumatic arthropathies as well as limited range of motion, but no radiologically detected fractures. All examinations were interpreted by two experienced musculoskeletal radiologists. The findings were compared with arthroscopic findings carried out within 28 days of the CT study. Results: In non-operated and operated wrists the comparison between arthro-MDCT and arthroscopy showed sensitivity, specificity and accuracy ranging between 92% and 94% for triangular fibrocartilage complex (TFCC), between 80% and 100% for intrinsic ligaments located within the proximal carpal compartment, and between 94% and 100% for articular cartilage. Inter-observer agreement between two radiologists, in the evaluation of all types of lesions, was almost perfect (k = 0.96) and statistically significant (p < 0.05). Conclusions: Arthro-MDCT of the wrist provides an accurate diagnosis to identify chondral, fibrocartilaginous and intra-articular ligament lesions in patients who cannot be evaluated by MRI, and in post-surgical patients.

  9. MDCT arthrography of the wrist: Diagnostic accuracy and indications

    Energy Technology Data Exchange (ETDEWEB)

    De Filippo, Massimo [Department of Clinical Sciences, Section of Radiological Sciences, University of Parma, Parma Hospital, Via Gramsci, 14, 43100 Parma (Italy)], E-mail: massimo.defilippo@unipr.it; Pogliacomi, Francesco [Orthopaedics, Traumatology and Functional Rehabilitation Unit, Department of Surgical Sciences, University of Parma, Parma Hospital, Via Gramsci 14, 43100 Parma (Italy); Bertellini, Annalisa [Department of Clinical Sciences, Section of Radiological Sciences, University of Parma, Parma Hospital, Via Gramsci, 14, 43100 Parma (Italy); Araoz, Philip A. [Department of Radiology, Division of Biostatistics, Mayo Clinic, 200 First St SW, Rochester, MN 55905 (United States); Averna, Raffaele; Sverzellati, Nicola; Ingegnoli, Anna [Department of Clinical Sciences, Section of Radiological Sciences, University of Parma, Parma Hospital, Via Gramsci, 14, 43100 Parma (Italy); Corradi, Maurizio; Costantino, Cosimo [Orthopaedics, Traumatology and Functional Rehabilitation Unit, Department of Surgical Sciences, University of Parma, Parma Hospital, Via Gramsci 14, 43100 Parma (Italy); Zompatori, Maurizio [Department of Radiological and Histopathological Sciences, Policlinic S.Orsola-Malpighi, University of Bologna, Via Massarenti 9, 40138 Bologna (Italy)

    2010-04-15

    Purpose: To evaluate the diagnostic accuracy and indications of arthrography with Multidetector Computed Tomography (arthro-MDCT) of the wrist in patients with absolute or relative contraindications to magnetic resonance imaging (MRI) studies and in patients with periarticular metal implants using diagnostic arthroscopy as the gold standard. Materials and methods: After intra-articular injection of iodixanol and volumetric acquisition, 43 wrists in patients of both genders (18 females, 25 males, age range 32-60 years) were examined with a 16-detector-row CT scanner. Fifteen patients had prior wrist surgery. The patients had arthralgia, degenerative and traumatic arthropathies as well as limited range of motion, but no radiologically detected fractures. All examinations were interpreted by two experienced musculoskeletal radiologists. The findings were compared with arthroscopic findings carried out within 28 days of the CT study. Results: In non-operated and operated wrists the comparison between arthro-MDCT and arthroscopy showed sensitivity, specificity and accuracy ranging between 92% and 94% for triangular fibrocartilage complex (TFCC), between 80% and 100% for intrinsic ligaments located within the proximal carpal compartment, and between 94% and 100% for articular cartilage. Inter-observer agreement between two radiologists, in the evaluation of all types of lesions, was almost perfect (k = 0.96) and statistically significant (p < 0.05). Conclusions: Arthro-MDCT of the wrist provides an accurate diagnosis to identify chondral, fibrocartilaginous and intra-articular ligament lesions in patients who cannot be evaluated by MRI, and in post-surgical patients.

  10. Abdominal circumference contributes to absence of wasting in Brazilian children.

    Science.gov (United States)

    César, J A; Victora, C G; Morris, S S; Post, C A

    1996-11-01

    A number of population groups in Latin America show high prevalences of stunting (low height-for-age) despite very low rates of wasting (weight-for-height deficits). One possible explanation for this phenomenon is an increase in abdominal circumference, which would affect children's weights but not their heights. This study was designed to describe the abdominal circumferences of a group of poor children from Northeast Brazil, and to relate these to their weight-for-weight z-score. Children (n = 252) participating in a government growth monitoring program were studied. The prevalence of stunting (below -2 SD) was 26.2%, but only 1.2% were wasted. Abdominal circumferences increased with age up to 36 mo, followed by a slight decline after 48 mo. Abdominal circumference was the anthropometric measurement most closely associated with weight-for-height, with a coefficient of determination of 41%. Even after adjusting for arm circumference, abdominal circumference continued to explain 16% of the variation in weight-for-height. Despite slight differences in measurement techniques, the study children had consistently larger abdominal girths than a sample of North American children. These findings must be verified by replication but highlight a possible contribution of abdominal circumference in the determination of levels of wasting.

  11. Abdominal emergencies in pediatrics.

    Science.gov (United States)

    Coca Robinot, D; Liébana de Rojas, C; Aguirre Pascual, E

    2016-05-01

    Abdominal symptoms are among the most common reasons for pediatric emergency department visits, and abdominal pain is the most frequently reported symptom. Thorough history taking and physical examination can often reach the correct diagnosis. Knowing the abdominal conditions that are most common in each age group can help radiologists narrow the differential diagnosis. When imaging tests are indicated, ultrasonography is usually the first-line technique, enabling the diagnosis or adding relevant information with the well-known advantages of this technique. Nowadays, plain-film X-ray studies are reserved for cases in which perforation, bowel obstruction, or foreign body ingestion is suspected. It is also important to remember that abdominal pain can also occur secondary to basal pneumonia. CT is reserved for specific indications and in individual cases, for example, in patients with high clinical suspicion of abdominal disease and inconclusive findings at ultrasonography. We review some of the most common conditions in pediatric emergencies, the different imaging tests indicated in each case, and the imaging signs in each condition.

  12. Adhesive capsulitis of the wrist. Diagnosis and treatment.

    Science.gov (United States)

    Hanson, E C; Wood, V E; Thiel, A E; Maloney, M D; Sauser, D D

    1988-09-01

    Adhesive capsulitis occurs as a pathologic entity in the shoulder, hip, and ankle joints. Thickening and contracture of the wrist joint capsule were demonstrated on arthrograms performed on ten patients ranging in age from 20 to 82 years. The patients had pain and limited range of motion in the wrist. The findings included: (1) resistance to the injection of smaller than normal volumes of contrast material, (2) obliteration of recesses, and (3) extravasation of the contrast agent along the needle tract. Closed manipulation under general anesthesia of the wrist on four patients resulted in some improvement in range of motion. A distal ulna fracture in one older patient occurred as a complication of manipulation. Careful technique and judicious patient selection are of paramount importance.

  13. Signs of muscle thixotropy during human ballistic wrist joint movements.

    Science.gov (United States)

    Axelson, H W

    2005-11-01

    A study was conducted on healthy subjects to determine whether voluntary ballistic wrist flexion movements are influenced by immediately preceding conditioning of the forearm muscles. Single rapid wrist flexion movements were made in response to an auditory "Go" signal. Rectified surface EMG was recorded from wrist flexors and extensors, and joint position was measured by a goniometer. The movements were preceded (2-3 s) by four different conditioning routines: 40-s rest (Rest), 10-s voluntary alternating wrist joint flexion and extension movements (Osc), and 10 s of 25 degrees weak isometric wrist extensor (Ext) or flexor contractions (Flex). When subjects made ballistic movements after Osc compared with Rest, peak velocity was higher (P = 0.02) and movement time shorter (P = 0.06), but there was no difference (P = 0.83) in motor reaction time (time between the onset of the first agonist burst and movement onset). If the movements were preceded by Ext compared with Flex, motor reaction time was longer (P = 0.01), indicating a longer electromechanical delay. There were no indications that postconditioning differences in agonist or antagonist muscle activity could explain the results. It was also demonstrated that, after Rest, peak velocity was lower (P < 0.01) for the first than for the second of a series of repetitive ballistic movements. The observations corresponded to results from passive experiments in which the median nerve was electrically stimulated. In conclusion, history-dependent (thixotropic) changes in skeletal muscle resistance seem to have implications for voluntary ballistic wrist movements. The study also provided evidence that muscle conditioning influences the central nervous reaction time preceding ballistic contractions.

  14. 78 FR 68905 - Agency Information Collection (Wrist Conditions Disability Benefits Questionnaire) Under OMB Review

    Science.gov (United States)

    2013-11-15

    ... AFFAIRS Agency Information Collection (Wrist Conditions Disability Benefits Questionnaire) Under OMB... Questionnaire)'' in any correspondence. FOR FURTHER INFORMATION CONTACT: Crystal Rennie, Enterprise Records... Disability Benefits Questionnaire)''. SUPPLEMENTARY INFORMATION: Title: Wrist Conditions Disability...

  15. Imaging of radial wrist pain. I. Imaging modalities and anatomy

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Ryan Ka Lok; Griffith, James F.; Ng, Alex Wing Hung [The Chinese University of Hong Kong, Department of Imaging and Interventional Radiology, Prince of Wales Hospital, Hong Kong, Shatin (China); Wong, Clara Wing Yee [The Chinese University of Hong Kong, Department of Orthopedics and Traumatology, Shatin (China)

    2014-06-15

    Radial wrist pain is a common clinical complaint. The relatively complex anatomy in this region, combined with the small size of the anatomical structures and occasionally subtle imaging findings, can pose problems when trying to localize the exact cause of pain. To fully comprehend the underlying pathology, one needs a good understanding of both radial-sided wrist anatomy and the relative merits of the different imaging techniques used to assess these structures. In part I of this review, these aspects will be discussed. (orig.)

  16. Imaging of radial wrist pain. I. Imaging modalities and anatomy

    International Nuclear Information System (INIS)

    Radial wrist pain is a common clinical complaint. The relatively complex anatomy in this region, combined with the small size of the anatomical structures and occasionally subtle imaging findings, can pose problems when trying to localize the exact cause of pain. To fully comprehend the underlying pathology, one needs a good understanding of both radial-sided wrist anatomy and the relative merits of the different imaging techniques used to assess these structures. In part I of this review, these aspects will be discussed. (orig.)

  17. Potential wrist ligament injury in rescuers performing cardiopulmonary resuscitation

    Directory of Open Access Journals (Sweden)

    Robert Curran

    2013-01-01

    Full Text Available Wrist pain in rescuers performing chest compressions as part of cardiopulmonary resuscitation has been reported anecdotally and recently in the literature. Studies have indicated that rescuers apply as much as 644 N of force to the victim′s chest with each compression, while standards require one hundred compressions per minute. Recent research suggests that forces transmitted through the rescuers′ wrists of less than 10% of those seen during the performance of chest compressions significantly strain the scapholunate ligament. Biomechanical research should be performed to further evaluate this possible correlation. Compensation for worker injury maybe involved.

  18. Radiographic findings in wrists and hands of patients with leprosy

    International Nuclear Information System (INIS)

    Leprosy, like other neuropathic disorders, can involve the skeleton, affecting both bone and joints, especially those segments that have to withstand weight. To asses the osteoarticular involvement of the wrist and hand in 58 patients with leprosy. The radiographic images of wrist and hand of 58 patients with Hansen's disease were reviewed. The entire spectrum of specific and nonspecific bone lesions described in the literature is presented. Despite the fact that the upper limbs do not have to withstand the weight that the feet and ankles do, radiographic images show that gripping and other common motions can also produce lesions compatible with those of neuropathic arthropathy. (Author) 20 refs

  19. Childhood abdominal cystic lymphangioma

    International Nuclear Information System (INIS)

    Background: Abdominal lymphangioma is a rare benign congenital malformation of the mesenteric and/or retroperitoneal lymphatics. Clinical presentation is variable and may be misleading; therefore, complex imaging studies are necessary in the evaluation of this condition. US and CT have a major role in the correct preoperative diagnosis and provide important information regarding location, size, adjacent organ involvement, and expected complications. Objective: To evaluate the clinical and imaging findings of seven children with proven abdominal cystic lymphangioma. Materials and methods: Clinical and imaging files of seven children with pathologically proven abdominal lymphangioma, from three university hospitals, were retrospectively evaluated. Patient's ages ranged from 1 day to 6 years (mean, 2.2 years). Symptoms and signs included evidence of inflammation, abnormal prenatal US findings, chronic abdominal pain, haemorrhage following trauma, clinical signs of intestinal obstruction, and abdominal distension with lower extremities lymphoedema. Plain films of five patients, US of six patients and CT of five patients were reviewed. Sequential imaging examinations were available in two cases. Results: Abdominal plain films showed displacement of bowel loops by a soft tissue mass in five of six patients, two of them with dilatation of small bowel loops. US revealed an abdominal multiloculated septated cystic mass in five of six cases and a single pelvic cyst in one which changed in appearance over 2 months. Ascites was present in three cases. CT demonstrated a septated cystic mass of variable sizes in all available five cases. Sequential US and CT examinations in two patients showed progressive enlargement of the masses, increase of fluid echogenicity, and thickening of walls or septa in both cases, with multiplication of septa in one case. At surgery, mesenteric lymphangioma was found in five patients and retroperitoneal lymphangioma in the other two. Conclusions: US

  20. Abdominal Dual Energy Imaging

    Science.gov (United States)

    Sommer, F. Graham; Brody, William R.; Cassel, Douglas M.; Macovski, Albert

    1981-11-01

    Dual energy scanned projection radiography of the abdomen has been performed using an experimental line-scanned radiographic system. Digital images simultaneously obtained at 85 and 135 kVp are combined, using photoelectric/Compton decomposition algorithms to create images from which selected materials are cancelled. Soft tissue cancellation images have proved most useful in various abdominal imaging applications, largely due to the elimination of obscuring high-contrast bowel gas shadows. These techniques have been successfully applied to intravenous pyelography, oral cholecystography, intravenous abdominal arteriog-raphy and the imaging of renal calculi.

  1. Childhood abdominal cystic lymphangioma

    Energy Technology Data Exchange (ETDEWEB)

    Konen, Osnat; Rathaus, Valeria; Shapiro, Myra [Department of Diagnostic Imaging, Meir General Hospital, Sapir Medical Centre, Kfar Saba (Israel); Dlugy, Elena [Department of Paediatric Surgery, Schneider Medical Centre, Sackler School of Medicine, Tel-Aviv University (Israel); Freud, Enrique [Department of Paediatric Surgery, Sapir Medical Centre, Sackler School of Medicine, Tel-Aviv University (Israel); Kessler, Ada [Department of Diagnostic Imaging, Sourasky Medical Centre, Tel-Aviv (Israel); Horev, Gadi [Department of Diagnostic Imaging, Schneider Medical Centre, Tel-Aviv (Israel)

    2002-02-01

    Background: Abdominal lymphangioma is a rare benign congenital malformation of the mesenteric and/or retroperitoneal lymphatics. Clinical presentation is variable and may be misleading; therefore, complex imaging studies are necessary in the evaluation of this condition. US and CT have a major role in the correct preoperative diagnosis and provide important information regarding location, size, adjacent organ involvement, and expected complications. Objective: To evaluate the clinical and imaging findings of seven children with proven abdominal cystic lymphangioma. Materials and methods: Clinical and imaging files of seven children with pathologically proven abdominal lymphangioma, from three university hospitals, were retrospectively evaluated. Patient's ages ranged from 1 day to 6 years (mean, 2.2 years). Symptoms and signs included evidence of inflammation, abnormal prenatal US findings, chronic abdominal pain, haemorrhage following trauma, clinical signs of intestinal obstruction, and abdominal distension with lower extremities lymphoedema. Plain films of five patients, US of six patients and CT of five patients were reviewed. Sequential imaging examinations were available in two cases. Results: Abdominal plain films showed displacement of bowel loops by a soft tissue mass in five of six patients, two of them with dilatation of small bowel loops. US revealed an abdominal multiloculated septated cystic mass in five of six cases and a single pelvic cyst in one which changed in appearance over 2 months. Ascites was present in three cases. CT demonstrated a septated cystic mass of variable sizes in all available five cases. Sequential US and CT examinations in two patients showed progressive enlargement of the masses, increase of fluid echogenicity, and thickening of walls or septa in both cases, with multiplication of septa in one case. At surgery, mesenteric lymphangioma was found in five patients and retroperitoneal lymphangioma in the other two

  2. Dolor abdominal recurrente

    Directory of Open Access Journals (Sweden)

    Rodrigo De Vivero

    2005-06-01

    Full Text Available Recurrent abdominal pain, is a common pediatric problem encountered by primary care physicians, medical subspecialists and surgical specialists. Chronic abdominal pain in children is usually functional-that is, without objective evidence of an underlying organic disorder. The presence of weight loss, gastrointestinal bleeding, persistent fever, chronic severe diarrhea and significant vomiting is associated with a higher prevalence of organic disease. In this article, it examined the diagnostic and therapeutic value of a medical and psychologic history, diagnostic tests, and pharmacological and behavioral therapy.

  3. 21 CFR 888.3760 - Wrist joint carpal scaphoid polymer prosthesis.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Wrist joint carpal scaphoid polymer prosthesis... SERVICES (CONTINUED) MEDICAL DEVICES ORTHOPEDIC DEVICES Prosthetic Devices § 888.3760 Wrist joint carpal scaphoid polymer prosthesis. (a) Identification. A wrist joint carpal scaphoid polymer prosthesis is a...

  4. 21 CFR 888.3770 - Wrist joint carpal trapezium polymer prosthesis.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Wrist joint carpal trapezium polymer prosthesis... SERVICES (CONTINUED) MEDICAL DEVICES ORTHOPEDIC DEVICES Prosthetic Devices § 888.3770 Wrist joint carpal trapezium polymer prosthesis. (a) Identification. A wrist joint carpal trapezium polymer prosthesis is a...

  5. 21 CFR 888.3750 - Wrist joint carpal lunate polymer prosthesis.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Wrist joint carpal lunate polymer prosthesis. 888... SERVICES (CONTINUED) MEDICAL DEVICES ORTHOPEDIC DEVICES Prosthetic Devices § 888.3750 Wrist joint carpal lunate polymer prosthesis. (a) Identification. A wrist joint carpal lunate prosthesis is a...

  6. 21 CFR 888.3800 - Wrist joint metal/polymer semi-constrained cemented prosthesis.

    Science.gov (United States)

    2010-04-01

    ... cemented prosthesis. 888.3800 Section 888.3800 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF... Wrist joint metal/polymer semi-constrained cemented prosthesis. (a) Identification. A wrist joint metal/polymer semi-constrained cemented prosthesis is a device intended to be implanted to replace a wrist...

  7. Flexor carpi ulnaris tenotomy alone does not eliminate its contribution to wrist torque

    NARCIS (Netherlands)

    M. de Bruin; M.J.C. Smeulders; M. Kreulen

    2011-01-01

    Background: Flexor carpi ulnaris muscle tenotomy and transfer to the extensor side of the wrist are common procedures used to improve wrist position and dexterity in patients with cerebral palsy. Our aim was to determine whether this muscle still influences wrist torque even after tenotomy of its di

  8. Adult abdominal hernias.

    LENUS (Irish Health Repository)

    Murphy, Kevin P

    2014-06-01

    Educational Objectives and Key Points. 1. Given that abdominal hernias are a frequent imaging finding, radiologists not only are required to interpret the appearances of abdominal hernias but also should be comfortable with identifying associated complications and postrepair findings. 2. CT is the imaging modality of choice for the assessment of a known adult abdominal hernia in both elective and acute circumstances because of rapid acquisition, capability of multiplanar reconstruction, good spatial resolution, and anatomic depiction with excellent sensitivity for most complications. 3. Ultrasound is useful for adult groin assessment and is the imaging modality of choice for pediatric abdominal wall hernia assessment, whereas MRI is beneficial when there is reasonable concern that a patient\\'s symptoms could be attributable to a hernia or a musculoskeletal source. 4. Fluoroscopic herniography is a sensitive radiologic investigation for patients with groin pain in whom a hernia is suspected but in whom a hernia cannot be identified at physical examination. 5. The diagnosis of an internal hernia not only is a challenging clinical diagnosis but also can be difficult to diagnose with imaging: Closed-loop small-bowel obstruction and abnormally located bowel loops relative to normally located small bowel or colon should prompt assessment for an internal hernia.

  9. Physicians' Abdominal Auscultation

    DEFF Research Database (Denmark)

    John, Gade; Peter, Kruse; Andersen, Ole Trier;

    1998-01-01

    Background: Abdominal auscultation has an important position in the physical examination of the abdomen. Little is known about rater agreement. The aim of this study was to describe rater agreement and thus, indirectly, the value of the examination. Methods: In a semi-virtual setup 12 recordings...

  10. Children's (Pediatric) Abdominal Ultrasound Imaging

    Medline Plus

    Full Text Available ... Resources Professions Site Index A-Z Children's (Pediatric) Ultrasound - Abdomen Children’s (pediatric) ultrasound imaging of the abdomen ... limitations of Abdominal Ultrasound Imaging? What is Abdominal Ultrasound Imaging? Ultrasound is safe and painless, and produces ...

  11. Muscle recruitment variations during wrist flexion exercise: MR evaluation

    Science.gov (United States)

    Fleckenstein, J. L.; Watumull, D.; Bertocci, L. A.; Nurenberg, P.; Peshock, R. M.; Payne, J. A.; Haller, R. G.; Blomqvist, C. G. (Principal Investigator)

    1994-01-01

    OBJECTIVE: Many exercise protocols used in physiological studies assume homogeneous and diffuse muscle recruitment. To test this assumption during a "standard" wrist flexion protocol, variations in muscle recruitment were assessed using MRI in eight healthy subjects. MATERIALS AND METHODS: Variations were assessed by comparing the right to the left forearms and the effect of slight (15 degrees) pronation or supination at the wrist. RESULTS: Postexercise imaging showed focal regions of increased signal intensity (SI), indicating relatively strong recruitment, most often in entire muscles, although occasionally only in subvolumes of muscles. In 15 of 26 studies, flexor carpi radialis (FCR) showed more SI than flexor carpi ulnaris, while in 11 studies SI in these muscles increased equivalently. Relatively greater FCR recruitment was seen during pronation and/or use of the nondominant side. Palmaris longus, a wrist flexor, did not appear recruited in 4 of 11 forearms in which it was present. A portion of the superficial finger flexor became hyperintense in 89% of studies, while recruitment of the deep finger flexor was seen only in 43%. CONCLUSION: Inter- and intraindividual variations in forearm muscle recruitment should be anticipated in physiological studies of standard wrist flexion exercise protocols.

  12. Statistical Modeling of Shape and Motion of the Wrist Bones

    NARCIS (Netherlands)

    Van de Giessen, M.

    2011-01-01

    Carpal instability occurs when the wrist bones assume a pathological posture, e.g. due to ligament rupture as a result of trauma. Ligament rupture cannot be diagnosed reliably directly, as current medical imaging modalities do not provide sufficient soft-tissue contrast (X-ray, CT) or lack a suffici

  13. Hyperstaticity for ergonomie design of a wrist exoskeleton.

    Science.gov (United States)

    Esmaeili, Mohammad; Jarrassé, Nathanaël; Dailey, Wayne; Burdet, Etienne; Campolo, Domenico

    2013-06-01

    Increasing the level of transparency in rehabilitation devices has been one of the main goals in robot-aided neurorehabilitation for the past two decades. This issue is particularly important to robotic structures that mimic the human counterpart's morphology and attach directly to the limb. Problems arise for complex joints such as the human wrist, which cannot be accurately matched with a traditional mechanical joint. In such cases, mechanical differences between human and robotic joint cause hyperstaticity (i.e. overconstraint) which, coupled with kinematic misalignments, leads to uncontrolled force/torque at the joint. This paper focuses on the prono-supination (PS) degree of freedom of the forearm. The overall force and torque in the wrist PS rotation is quantified by means of a wrist robot. A practical solution to avoid hyperstaticity and reduce the level of undesired force/torque in the wrist is presented, which is shown to reduce 75% of the force and 68% of the torque. PMID:24187236

  14. [Osteoid osteoma of the wrist joint resembling tenosynovitis].

    Science.gov (United States)

    Volpin, Gershon; Shtarker, Haim; Oliver, Simon; Katznelson, Alexander; Stahl, Shalom

    2006-12-01

    Osteoid osteoma of bones of the wrist joint is a relatively rare lesion. This article presents a series of three patients, one with osteoid osteoma of the styloid process of the radius and two with osteoid osteoma of the capitate bone. All of them had clinical symptoms resembling those of stenosing tenosynovitis of the wrist joint. X-rays, tomography and bone scan revealed the characteristic findings of osteoid osteoma. Histological examination confirmed the diagnosis. Treatment consisted of "en bloc" excision of these tumors. Following surgery patients were asymptomatic and had normal mobility of the affected wrist. In the first patient this has been maintained for the succeeding 27 years. It is suggested that in any case of persistent unexplained pain of the wrist or clinical symptoms resembling those of tenosynovitis, osteoid osteoma of the styloid process of the radius or of the carpal bones should also be included in the differential diagnosis. The recommended treatment of osteoid osteoma is "en bloc" excision of this tumour in the affected bone, resulting in complete relief of pain and absence of functional disturbances. PMID:17220026

  15. Coordinate systems for the carpal bones of the wrist.

    Science.gov (United States)

    Coburn, James C; Upal, Mohammad A; Crisco, Joseph J

    2007-01-01

    The eight small and complexly shaped carpal bones of the wrist articulate in six degrees of freedom with each other and to some extent with the radius and the metacarpals. With the increasing number and sophistication of studies of the carpus, a standardized definition for a coordinate system for each the carpal bones would aid in the reporting and comparison of findings. This paper presents a method for defining and constructing a coordinate system specific to each of the eight carpal bones based upon the inertial properties of the bone, derived from surface models constructed from three-dimensional (3-D) medical image volumes. Surface models from both wrists of 5 male and 5 female subjects were generated from CT image volumes in two neutral wrist positions (functional and clinical). An automated algorithm found the principal inertial axes and oriented them according to preset conditions in 85% of the bones, the remaining bones were corrected manually. Six of the eight carpal bones were significantly more extended in the functional neutral position than in the clinical neutral position. Gender had no significant effect on carpal bone posture in either wrist position. Correlations between the 3-D carpal posture and the commonly used 2-D clinical radiographic carpal angles are established. 3-D coordinate systems defined by the anatomy of the carpal bone, such as the ones presented here, are necessary to completely describe 3-D changes in the posture of the carpal bones.

  16. Carpal tunnel and transverse carpal ligament stiffness with changes in wrist posture and indenter size.

    Science.gov (United States)

    Holmes, Michael W R; Howarth, Samuel J; Callaghan, Jack P; Keir, Peter J

    2011-11-01

    This study investigated the effects of loading and posture on mechanical properties of the transverse carpal ligament (TCL). Ten fresh-frozen cadaver arms were dissected to expose the TCL and positioned in the load frame of a servo-hydraulic testing machine, equipped with a load cell and custom made indenters. Four cylindrical indenters (5, 10, 20, and 35 mm) loaded the TCL in three wrist postures (30° extension, neutral and 30° flexion). Three loading cycles with a peak force of 50 N were applied at 5 N/s for each condition. The flexed wrist posture had significantly greater TCL stiffness (40.0 ± 3.3 N/mm) than the neutral (35.9 ± 3.5 N/mm, p = 0.045) and extended postures (34.9 ± 2.8 N/mm, p = 0.025). TCL stiffness using the 10 and 20 mm indenters was larger than the 5 mm indenter. Stiffness was greatest with the 20 mm indenter, which had the greatest indenter contact area on the TCL. The 35 mm indenter covered the carpal bones, compressed the carpal tunnel and produced the lowest stiffness. The complexity of the TCL makes it an important part of the carpal tunnel and the mechanical properties found are essential to understanding mechanisms of carpal tunnel syndrome. 

  17. Redundancy resolution of a human arm for controlling a seven DOF wearable robotic system.

    Science.gov (United States)

    Kim, Hyunchul; Miller, Levi Makaio; Al-Refai, Aimen; Brand, Moshe; Rosen, Jacob

    2011-01-01

    The human arm including the shoulder, elbow, wrist joints and exclusion scapular motion has 7 Degrees of Freedom (DOF) while positioning of the wrist in space and orientating the palm is a task that requires 6 DOF. As such it includes one more DOF than is needed to complete the task. Given the redundant nature of the arm, multiple arm configurations can be used to complete a task, which is expressed mathematically by none unique solution for the inverse kinematics. Despite this mathematical difficulty, the motor control provides a unique solution for the arm redundancy as the arm is moved in space. Resolving this redundancy is becoming critical as the human interacts with a wearable robotic system(exoskeleton) which includes the same redundancy as the human arm. Therefore, the inverse kinematics solution resolving the redundancy of these two coupled systems must be identical in order to guarantee a seamless integration. The redundancy of the arm can be formulated kinematically by defining the swivel angle - the rotation angle of the plane including the upper and lower arm around a virtual axis connecting the shoulder and wrist joints which are fixed in space. Analyzing reaching tasks recorded with a motion capture lab indicates that the swivel angle is selected such that when the elbow joint is flexed, the palm points the head. Based on these experimental results, selecting the point around the center of the head as a stationary target allows to calculate the swivel angle and in that way to resolve the human arm redundancy. Experimental results indicated that by using the proposed redundancy resolution criteria the error between the predicted swivel angle and the actual swivel angle adopted by the motor control system is less then 5 Deg. This criterion or a synthesis of several additional criteria may improve the synergistic relationships between an operator and a wearable robotic system. PMID:22255087

  18. T2-signal of ulnar nerve branches at the wrist in guyon's canal syndrome.

    Directory of Open Access Journals (Sweden)

    Jennifer Kollmer

    Full Text Available OBJECTIVE: To evaluate T2-signal of high-resolution MRI in distal ulnar nerve branches at the wrist as diagnostic sign of guyon's-canal-syndrome (GCS. MATERIALS AND METHODS: 11 GCS patients confirmed by clinical/electrophysiological findings, and 20 wrists from 11 asymptomatic volunteers were prospectively included to undergo the following protocol: axial T2-weighted-fat-suppressed and T1-weighted-turbo-spin-echo-sequences (3T-MR-scanner, Magnetom/Verio/Siemens. Patients were examined in prone position with the arm extended and wrist placed in an 8-channel surface-array-coil. Nerve T2-signal was evaluated as contrast-to-noise-ratios (CNR from proximal-to-distal in ulnar nerve trunk, its superficial/sensory and deep/motor branch. Distal motor-nerve-conduction (distal-motor-latency (dml to first dorsal-interosseus (IOD I and abductor digiti minimi muscles was correlated with T2-signal. Approval by the institutional review-board and written informed consent was given by all participants. RESULTS: In GCS, mean nerve T2-signal was strongly increased within the deep/motor branch (11.7±4.8 vs.controls:-5.3±2.4;p = 0.001 but clearly less and not significantly increased in ulnar nerve trunk (6.8±6.4vs.-7.4±2.5;p = 0.07 and superficial/sensory branch (-2.1±4.9vs.-9.7±2.9;p = 0.08. Median nerve T2-signal did not differ between patients and controls (-9.8±2.5vs.-6.7±4.2;p = 0.45. T2-signal of deep/motor branch correlated strongly with motor-conduction-velocity to IOD I in non-linear fashion (R(2 = -0.8;p<0.001. ROC-analysis revealed increased nerve T2-signal of the deep/motor branch to be a sign of excellent diagnostic performance (area-under-the-curve 0.94, 95% CI: 0.85-1.00; specificity 90%, sensitivity 89.5%. CONCLUSIONS: Nerve T2-signal increase of distal ulnar nerve branches and in particular of the deep/motor branch is highly accurate for the diagnostic determination of GCS. Furthermore, for the first time it was found in nerve entrapment

  19. Extracellular and intracellular volume variations during postural change measured by segmental and wrist-ankle bioimpedance spectroscopy.

    Science.gov (United States)

    Fenech, Marianne; Jaffrin, Michel Y

    2004-01-01

    Extracellular (ECW) and intracellular (ICW) volumes were measured using both segmental and wrist-ankle (W-A) bioimpedance spectroscopy (5-1000 kHz) in 15 healthy subjects (7 men, 8 women). In the 1st protocol, the subject, after sitting for 30 min, laid supine for at least 30 min. In the second protocol, the subject, who had been supine for 1 hr, sat up in bed for 10 min and returned to supine position for another hour. Segmental ECW and ICW resistances of legs, arms and trunk were measured by placing four voltage electrodes on wrist, shoulder, top of thigh and ankle and using Hanai's conductivity theory. W-A resistances were found to be very close to the sum of segmental resistances. When switching from sitting to supine (protocol 1), the mean ECW leg resistance increased by 18.2%, that of arm and W-A by 12.4%. Trunk resistance also increased but not significantly by 4.8%. Corresponding increases in ICW resistance were smaller for legs (3.7%) and arm (-0.7%) but larger for the trunk (21.4%). Total body ECW volumes from segmental measurements were in good agreement with W-A and Watson anthropomorphic correlation. The decrease in total ECW volume (when supine) calculated from segmental resistances was at 0.79 l less than the W-A one (1.12 l). Total ICW volume reductions were 3.4% (segmental) and 3.8% (W-A). Tests of protocol 2 confirmed that resistance and fluid volume values were not affected by a temporary position change. PMID:14723506

  20. Component separation in abdominal trauma.

    Science.gov (United States)

    Rawstorne, Edward; Smart, Christopher J; Fallis, Simon A; Suggett, Nigel

    2014-01-01

    Component separation is established for complex hernia repairs. This case presents early component separation and release of the anterior and posterior sheath to facilitate closure of the abdominal wall following emergency laparotomy, reinforcing the repair with a biological mesh. On Day 11 following an emergency laparotomy for penetrating trauma, this patient underwent component separation and release of the anterior and posterior sheath. An intra-abdominal biological mesh was secured, and the fascia and skin closed successfully. Primary abdominal closure can be achieved in patients with penetrating abdominal trauma with the use of component separation and insertion of intra-abdominal biological mesh, where standard closure is not possible. PMID:24876334

  1. Continuous Estimation of Wrist Torque from Surface EMG Signals Using Path-dependent Model

    Institute of Scientific and Technical Information of China (English)

    PAN Li-zhi; ZHANG Ding-guo; SHENG Xin-jun; ZHU Xiang-yang

    2014-01-01

    Continuous estimation of wrist torque from surface electromyography (EMG) signals has been studied by some research institutes. Hysteresis effect is a phenomenon in EMG force relationship. In this work, a path-dependent model based on hysteresis effect was used for continuously estimating wrist torque from surface EMG signals. The surface EMG signals of the flexor carpi ulnaris (FCU) and extensor carpi radialis (ECR) were collected along with wrist torque of flexion/extension degree-of-freedom. EMG signal of FCU was used to estimate the torque of wrist flexion and EMG signal of ECR to estimate the torque of wrist extension. The existence of hysteresis effect has been proven either during wrist flexion or extension on all subjects. And the estimation performance of path-dependent model is much better than the overall model. Thus, the path-dependent model is suitable to improve the wrist torque's estimation accuracy.

  2. Wheelchair ergonomic hand drive mechanism use improves wrist mechanics associated with carpal tunnel syndrome.

    Science.gov (United States)

    Zukowski, Lisa A; Roper, Jaimie A; Shechtman, Orit; Otzel, Dana M; Hovis, Patty W; Tillman, Mark D

    2014-01-01

    Among conventional manual wheelchair (CMW) users, 49% to 63% experience carpal tunnel syndrome (CTS) that is likely induced by large forces transmitted through the wrist and extreme wrist orientations. The ergonomic hand drive mechanism (EHDM) tested in this study has been shown to utilize a more neutral wrist orientation. This study evaluates the use of an EHDM in terms of wrist orientations that may predispose individuals to CTS. Eleven adult full-time CMW users with spinal cord injury participated. Motion data were captured as participants propelled across a flat surface, completing five trials in a CMW and five trials in the same CMW fitted with the EHDM. Average angular wrist orientations were compared between the two propulsion styles. Use of the EHDM resulted in reduced wrist extension and ulnar deviation. The shift to more neutral wrist orientations observed with EHDM use may reduce median nerve compression.

  3. Obesity-Associated Abdominal Elephantiasis

    Directory of Open Access Journals (Sweden)

    Ritesh Kohli

    2013-01-01

    Full Text Available Abdominal elephantiasis is a rare entity. Abdominal elephantiasis is an uncommon, but deformative and progressive cutaneous disease caused by chronic lymphedema and recurrent streptococcal or Staphylococcus infections of the abdominal wall. We present 3 cases of patients with morbid obesity who presented to our hospital with abdominal wall swelling, thickening, erythema, and pain. The abdominal wall and legs were edematous, with cobblestone-like, thickened, hyperpigmented, and fissured plaques on the abdomen. Two patients had localised areas of skin erythema, tenderness, and increased warmth. There was purulent drainage from the abdominal wall in one patient. They were managed with antibiotics with some initial improvement. Meticulous skin care and local keratolytic treatment for the lesions were initiated with limited success due to their late presentation. All three patients refused surgical therapy. Conclusion. Early diagnosis is important for the treatment of abdominal elephantiasis and prevention of complications.

  4. The abdominal circulatory pump.

    Directory of Open Access Journals (Sweden)

    Andrea Aliverti

    Full Text Available Blood in the splanchnic vasculature can be transferred to the extremities. We quantified such blood shifts in normal subjects by measuring trunk volume by optoelectronic plethysmography, simultaneously with changes in body volume by whole body plethysmography during contractions of the diaphragm and abdominal muscles. Trunk volume changes with blood shifts, but body volume does not so that the blood volume shifted between trunk and extremities (Vbs is the difference between changes in trunk and body volume. This is so because both trunk and body volume change identically with breathing and gas expansion or compression. During tidal breathing Vbs was 50-75 ml with an ejection fraction of 4-6% and an output of 750-1500 ml/min. Step increases in abdominal pressure resulted in rapid emptying presumably from the liver with a time constant of 0.61+/-0.1SE sec. followed by slower flow from non-hepatic viscera. The filling time constant was 0.57+/-0.09SE sec. Splanchnic emptying shifted up to 650 ml blood. With emptying, the increased hepatic vein flow increases the blood pressure at its entry into the inferior vena cava (IVC and abolishes the pressure gradient producing flow between the femoral vein and the IVC inducing blood pooling in the legs. The findings are important for exercise because the larger the Vbs the greater the perfusion of locomotor muscles. During asystolic cardiac arrest we calculate that appropriate timing of abdominal compression could produce an output of 6 L/min. so that the abdominal circulatory pump might act as an auxiliary heart.

  5. The Abdominal Circulatory Pump

    OpenAIRE

    Andrea Aliverti; Dario Bovio; Irene Fullin; Dellacà, Raffaele L.; Antonella Lo Mauro; Antonio Pedotti; Macklem, Peter T.

    2009-01-01

    Blood in the splanchnic vasculature can be transferred to the extremities. We quantified such blood shifts in normal subjects by measuring trunk volume by optoelectronic plethysmography, simultaneously with changes in body volume by whole body plethysmography during contractions of the diaphragm and abdominal muscles. Trunk volume changes with blood shifts, but body volume does not so that the blood volume shifted between trunk and extremities (Vbs) is the difference between changes in trunk ...

  6. Abdominal Radical Trachelectomy

    OpenAIRE

    Căpîlna, Mihai Emil; Ioanid, Nicolae; Scripcariu, Viorel; Gavrilescu, Madalina Mihaela; Szabo, Bela

    2014-01-01

    Objective Abdominal radical trachelectomy (ART) is one of the fertility-sparing procedures in women with early-stage cervical cancer. The published results of ART, in comparison with vaginal radical trachelectomy, so far are limited. Materials and Methods This retrospective study comprises all cases of female patients referred to ART with early-stage cervical cancer from 2 gynecologic oncology centers in Romania. Results A total of 29 women were referred for ART, but subsequently, fertility c...

  7. Abdominal aspergillosis: CT findings

    Energy Technology Data Exchange (ETDEWEB)

    Yeom, Suk Keu, E-mail: pagoda20@hanmail.net [Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1, Poongnap2-dong, Songpa-gu, Seoul, 138-736 (Korea, Republic of); Kim, Hye Jin, E-mail: kimhyejin@amc.seoul.kr [Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1, Poongnap2-dong, Songpa-gu, Seoul, 138-736 (Korea, Republic of); Byun, Jae Ho, E-mail: jhbyun@amc.seoul.kr [Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1, Poongnap2-dong, Songpa-gu, Seoul, 138-736 (Korea, Republic of); Kim, Ah Young, E-mail: aykim@amc.seoul.kr [Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1, Poongnap2-dong, Songpa-gu, Seoul, 138-736 (Korea, Republic of); Lee, Moon-Gyu, E-mail: mglee@amc.seoul.kr [Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1, Poongnap2-dong, Songpa-gu, Seoul, 138-736 (Korea, Republic of); Ha, Hyun Kwon, E-mail: hkha@amc.seoul.kr [Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1, Poongnap2-dong, Songpa-gu, Seoul, 138-736 (Korea, Republic of)

    2011-03-15

    Objective: In order to retrospectively evaluate the CT findings of abdominal aspergillosis in immunocompromised patients. Materials and methods: CT scans were reviewed with regard to the sites, number, morphologic appearance, attenuation, and the contrast enhancement patterns of the lesions in six patients (5 women, 1 man; mean age, 43.4 years; range, 23-59 years) with pathologically proved abdominal aspergillosis by two gastrointestinal radiologists in consensus. Medical records were also reviewed to determine each patient's clinical status and outcome. Results: All patients were immunocompromised state: 4 patients received immunosuppressive therapy for solid organ transplantation and 2 patients received chemotherapy for acute myeloid leukemia. Aspergillosis involved blood vessels (n = 3), liver (n = 2), spleen (n = 2), gastrointestinal tract (n = 2), native kidney (n = 1), transplanted kidney (n = 1), peritoneum (n = 1), and retroperitoneum (n = 1). CT demonstrated solid organ or bowel infarction or perforation secondary to vascular thrombosis or pseudoaneurysm, multiple low-attenuating lesions of solid organs presenting as abscesses, concentric bowel wall thickening mimicking typhlitis, or diffuse or nodular infiltration of the peritoneum and retroperitoneum. Conclusion: Familiarity with findings commonly presenting as angioinvasive features or abscesses on CT, may facilitate the diagnosis of rare and fatal abdominal aspergillosis.

  8. Abdominal aspergillosis: CT findings

    International Nuclear Information System (INIS)

    Objective: In order to retrospectively evaluate the CT findings of abdominal aspergillosis in immunocompromised patients. Materials and methods: CT scans were reviewed with regard to the sites, number, morphologic appearance, attenuation, and the contrast enhancement patterns of the lesions in six patients (5 women, 1 man; mean age, 43.4 years; range, 23-59 years) with pathologically proved abdominal aspergillosis by two gastrointestinal radiologists in consensus. Medical records were also reviewed to determine each patient's clinical status and outcome. Results: All patients were immunocompromised state: 4 patients received immunosuppressive therapy for solid organ transplantation and 2 patients received chemotherapy for acute myeloid leukemia. Aspergillosis involved blood vessels (n = 3), liver (n = 2), spleen (n = 2), gastrointestinal tract (n = 2), native kidney (n = 1), transplanted kidney (n = 1), peritoneum (n = 1), and retroperitoneum (n = 1). CT demonstrated solid organ or bowel infarction or perforation secondary to vascular thrombosis or pseudoaneurysm, multiple low-attenuating lesions of solid organs presenting as abscesses, concentric bowel wall thickening mimicking typhlitis, or diffuse or nodular infiltration of the peritoneum and retroperitoneum. Conclusion: Familiarity with findings commonly presenting as angioinvasive features or abscesses on CT, may facilitate the diagnosis of rare and fatal abdominal aspergillosis.

  9. Detailed analysis of contrast-enhanced MRI of hands and wrists in patients with psoriatic arthritis

    Energy Technology Data Exchange (ETDEWEB)

    Tehranzadeh, Jamshid [University of California, Department of Radiological Sciences, Irvine (United States); University of California Medical Center, Department of Radiological Sciences R-140, Orange, CA (United States); Ashikyan, Oganes; Anavim, Arash; Shin, John [University of California, Department of Radiological Sciences, Irvine (United States)

    2008-05-15

    The objective was to perform detailed analysis of the involved soft tissues, tendons, joints, and bones in the hands and wrists of patients with psoriatic arthritis (PsA). We reviewed 23 contrast-enhanced MR imaging studies (13 hands and 10 wrists) in 10 patients with the clinical diagnosis of PsA. We obtained clinical information from medical records and evaluated images for the presence of erosions, bone marrow edema, joint synovitis, tenosynovitis, carpal tunnel, and soft tissue involvement. Two board-certified musculoskeletal radiologists reviewed all images independently. Differences were resolved during a subsequent joint session. The average duration of disease was 71.3 months, ranging from 1 month to 25 years. Eight of the 10 wrists (80%) and 6 of the 13 hands demonstrated bone erosions. Bone marrow abnormalities were shown in 5 of the 10 wrists (50%) and 4 of the 14 hands (31%). Triangular fibrocartilage tears were seen in 6 of the 10 wrists (60%). Wrist and hand joint synovitis were present in all studies (67 wrist joints and 101 hand joints). Wrist soft tissue involvement was detected in 9 of the 10 wrists (90%) and hand soft tissue involvement was present in 12 of the 13 wrists (92%). Findings adjacent to the region of soft tissue involvement included synovitis (4 wrists) and tenosynovitis (3 wrists). Bone marrow edema adjacent to the region of soft tissue involvement was seen in one wrist. Bulge of the flexor retinaculum was seen in 4 of the 10 wrists (40%) and median nerve enhancement was seen in 8 of the 10 wrists (80%). Tenosynovitis was seen in all studies (all 10 of the hands and all 13 of the wrists). The 'rheumatoid' type of distribution of bony lesions was common in our study. Interobserver agreement for various findings ranged from 83% to 100%. Contrast-enhanced MRI unequivocally demonstrated bone marrow edema, erosions, tendon and soft-tissue disease, and median nerve involvement, with good interobserver reliability in patients with

  10. A clinical decision rule for the use of plain radiography in children after acute wrist injury: development and external validation of the Amsterdam Pediatric Wrist Rules

    NARCIS (Netherlands)

    A. Slaar (Annelie); M.M.J. Walenkamp (Monique); A. Bentohami (Abdelali); M. Maas (Mario); R.R. van Rijn (Rick); E.W. Steyerberg (Ewout); L.C. Jager (L. Cara); N.L. Sosef (Nico L.); R. van Velde (Romuald); J.M. Ultee (Jan); J.C. Goslings (Carel); N.W.L. Schep (Niels)

    2016-01-01

    textabstractBackground: In most hospitals, children with acute wrist trauma are routinely referred for radiography. Objective: To develop and validate a clinical decision rule to decide whether radiography in children with wrist trauma is required. Materials and methods: We prospectively developed a

  11. Pose Tracking Algorithm of an Endoscopic Surgery Robot Wrist

    Energy Technology Data Exchange (ETDEWEB)

    Wang, L [Chinese-German Institute of Automatic Control Engineering, Tongji University (China); Yin, H L [Chinese-German Institute of Automatic Control Engineering, Tongji University (China); Meng, Q [Shanghai University of Electric Power (China)

    2006-10-15

    In recent two decades, more and more research on the endoscopic surgery has been carried out [2]. Most of the work focuses on the development of the robot in the field of robotics and the navigation of the surgery tools based on computer graphics. But the tracking and locating of the EndoWrist is also a very important aspect. This paper deals with the the tracking algorithm of the EndoWrist's pose (position and orientation). The linear tracking of the position is handled by the Kalman Filter. The quaternion-based nonlinear orientation tracking is implemented with the Extended Kalman Filter. The most innovative point of this paper is the parameterization of the motion model of the Extended Kalman Filter.

  12. Arthroscopy of the wrist: anatomy and classification of carpal instability.

    Science.gov (United States)

    Cooney, W P; Dobyns, J H; Linscheid, R L

    1990-01-01

    Carpal instability can be defined as the lack of ligamentous and skeletal support adequate to maintain a wrist stable to external forces of pinch and grasp. This instability may be static or dynamic. It has been classified as (a) carpal instability, dissociated (CID), a situation in which one or more of the ligaments are torn, and (b) carpal instability, nondissociative (CIND), a situation in which the ligaments are intact but stretched. Carpal instability can also be the result of carpal bone malalignment from various causes. Arthroscopy can be particularly useful in assessing carpal instability, however arthrography with contrast medium, fluoroscopy, and stress loading should precede this arthroscopic assessment. Arthroscopy allows visualization of the volar radiocarpal and ulnocarpal ligaments of the wrist, and the arthroscopic examination can be combined with manual manipulation of the carpal bones to detect laxity of those ligaments, to examine stability of the scapholunate and lunotriquetral interosseous ligaments, and to show instability of the distal radioulnar joint.

  13. Rheumatoid wrist deformity and risk of extensor tendon rupture evaluated by 3DCT imaging

    Energy Technology Data Exchange (ETDEWEB)

    Ishikawa, Hajime; Abe, Asami; Murasawa, Akira; Nakazono, Kiyoshi; Horizono, Hidehiro; Ishii, Katsushi; Seki, Eiko [Niigata Rheumatic Center, Department of Rheumatology, Shibata city, Niigata (Japan)

    2010-05-15

    Extensor tendon rupture on the dorsum of the wrist is commonly seen in patients with rheumatoid arthritis (RA). It causes immediate dysfunction of the hand and surgical reconstruction is usually required. The purpose of this study was to clarify the risk of extensor tendon rupture by quantifying wrist deformity on three-dimensional computed tomography (3DCT) images. Three-dimensional CT images of 108 wrists in 102 patients with RA and 38 wrists in 38 healthy volunteers were analyzed retrospectively. All of the rheumatoid wrists had caused persistent pain for more than 6 months despite ongoing medical treatment. Extensor tendon rupture was noted in 49 wrists in 47 patients, and no rupture was noted in 59 wrists in 56 patients. The dorsal subluxation ratio (DSR) of the ulnar head and the carpal supination angle (CSA) were measured utilizing a new technique. The average DSR and CSA in the rupture group (n = 49), the non-rupture group (n = 59), and the normal wrist group (n = 38) were 37%, 19%, and 26%, and 15 , 11 , and 6 respectively. The cut-off values for extensor tendon rupture in the wrists of patients with RA were 32% (sensitivity; 70%, specificity; 75%) in the DSR, and 14 (71%, 68%) in the CSA. By utilizing 3DCT imaging of the rheumatoid wrist, these parameters can help improve our ability to predict extensor tendon rupture. (orig.)

  14. Pediatric Elbow and Wrist Pathology Related to Sports Participation.

    Science.gov (United States)

    Ellington, Matthew D; Edmonds, Eric W

    2016-10-01

    Pediatric overuse injuries are becoming more prevalent in today's society with more children competitively playing year-round sports at a younger age. The importance of prompt diagnosis and treatment is paramount to the treatment for these injuries, second only to rest and activity modification. This article will focus on overuse injuries of the upper extremity, specifically: little league elbow, elbow osteochondritis dissecans, and gymnast wrist. It will also discuss the pathophysiology, diagnosis, imaging, and treatment of each of these entities. PMID:27637661

  15. Kinematics and Dynamics of an Asymmetrical Parallel Robotic Wrist

    DEFF Research Database (Denmark)

    Wu, Guanglei

    2014-01-01

    This paper introduces an asymmetrical parallel robotic wrist, which can generate a decoupled unlimited-torsion motion and achieve high positioning accuracy. The kinematics, dexterity, and singularities of the manipulator are investigated to visualize the performance contours of the manipulator....... Using the method of Lagrange multipliers and considering all the mobile components, the equations of motion of the manipulator are derived to investigate the dynamic characteristics efficiently. The developed dynamic model is numerically illustrated and compared with its simplified formulation to show...

  16. Wrist proprioceptive acuity: A comprehensive robot-aided assessment.

    Science.gov (United States)

    Cappello, Leonardo; Contu, Sara; Konczak, Juergen; Masia, Lorenzo

    2015-08-01

    Proprioception is the sense of the body awareness. Proprioceptive deficits represent frequent consequences of several neurological conditions like stroke, Parkinson's disease and others. The assessment of such somatosensory function is crucial, although the available clinical tests are not sensitive enough. The human wrist is a crucial joint for many activities of daily living and to address the lack of its characterization in terms of proprioceptive acuity the authors in previous studies proposed a novel method that combined the use of a 3-DoF robot and a threshold haunting paradigm. Further experiments were performed to characterize the proprioceptive acuity of the dominant wrist for adduction, extension, pronation and supination by using a 2-alternative-forced-choice test. The acuity thresholds obtained from six subjects (mean values ± standard deviation of 1.65±0.39 for extension, 1.13±0.34 for adduction, 1.90±0.58 for pronation and 1.70±0.30 for supination) were finally combined with the ones harvested in the previous studies for flexion and abduction in order to build the first comprehensive database of human wrist proprioceptive acuity.

  17. The carpal stretch test at the rheumatoid wrist.

    Science.gov (United States)

    Shimizu, Hiroyuki; Beppu, Moroe; Matsusita, Kazuhiko; Arai, Takeshi; Yoshida, Noriyuki

    2012-01-01

    The purpose of this study was to evaluate the radiographic changes of the carpus for rheumatoid wrists in patients who underwent the Sauvé-Kapandji procedure by examining the clinical results and comparing pre- and postoperative radiographic measurements. We studied 43 wrists in 37 patients who showed vertical laxity in the radiocarpal and midcarpal joint on preoperative carpal stretch test. Pain was improved in all patients and the forearm rotation angles of the wrist were significantly improved after the operation. The carpal collapse ratio was significantly reduced after the operation. The carpal collapse reduction rate was significantly greater in the group with than that in the group without midcarpal joint vertical laxity on the carpal stretch test. Although the Sauvé-Kapandji procedure was not sufficiently effective in preventing carpal collapse, it did have a protective effect against ulnar carpal shift. The results of our study showed that vertical laxity of the midcarpal joint was the risk factor of the carpal collapse after Sauvé-Kapandji procedure.

  18. The management of wrist injuries: an international perspective.

    Science.gov (United States)

    Garcia-Elias, Marc; Folgar, Miguel Angel Vidal

    2006-11-01

    Wrist injury is common and may significantly impair the overall function of the upper extremity unless properly managed. Fractures of the distal radius are particularly common among the aging population, accounting for nearly 1/6 of all fractures, often as a result of increased longevity with the subsequent underlying osteoporosis. New diagnostic tools, including wrist arthroscopy, magnetic resonance imaging, or computed tomography, are increasingly available in developed countries allowing accurate recognition and more effective resolution of lesions which would be otherwise missed using conventional methods. First world treatment standards, however, can scarcely be introduced in developing countries owing to, among other factors, different prevalence of problems, and the lack of resource to implement most modern technologies. If any program needs to be introduced that meets the demands of wrist injury management in the third world, aside from a better regionalisation of trauma care, it should emphasise adequate training of professionals in the use of more cost effective techniques of fracture reduction and stabilisation, applicable everywhere, with the minimum possible morbidity. PMID:17049527

  19. [Differential diagnosis of abdominal pain].

    Science.gov (United States)

    Frei, Pascal

    2015-09-01

    Despite the frequency of functional abdominal pain, potentially dangerous causes of abdominal pain need to be excluded. Medical history and clinical examination must focus on red flags and signs for imflammatory or malignant diseases. See the patient twice in the case of severe and acute abdominal pain if lab parameters or radiological examinations are normal. Avoid repeated and useless X-ray exposure whenever possible. In the case of subacute or chronic abdominal pain, lab tests such as fecal calprotectin, helicobacter stool antigen and serological tests for celiac disease are very useful. Elderly patients may show atypical or missing clinical signs. Take care of red herrings and be skeptical whether your initial diagnosis is really correct. Abdominal pain can frequently be an abdominal wall pain. PMID:26331201

  20. Abdominal aortic aneurysm surgery

    DEFF Research Database (Denmark)

    Gefke, K; Schroeder, T V; Thisted, B;

    1994-01-01

    The goal of this study was to identify patients who need longer care in the ICU (more than 48 hours) following abdominal aortic aneurysm (AAA) surgery and to evaluate the influence of perioperative complications on short- and long-term survival and quality of life. AAA surgery was performed in 553......, 78% stated that their quality of life had improved or was unchanged after surgery and had resumed working. These data justify a therapeutically aggressive approach, including ICU therapy following AAA surgery, despite failure of one or more organ systems....

  1. Dolor abdominal recurrente .

    Directory of Open Access Journals (Sweden)

    Rodrigo De Vivero

    2009-11-01

    Full Text Available El dolor abdominal recurrente (DAR es un problema frecuente en la consulta médica y en la subespecialidad médica y quirúrgica. El DAR es frecuentemente funcional, es decir, sin una causa orgánica aparente. El diagnóstico diferencial debe incluir pérdida de peso, sangrado gastrointestinal, fiebre persistente, diarrea crónica y vómito importante. En este artículo se revisa el diagnóstico y tratamiento, pruebas diagnósticas y manejo farmacológico y ambiental.

  2. Practical human abdominal fat imaging utilizing electrical impedance tomography

    International Nuclear Information System (INIS)

    The fundamental cause of metabolic syndrome is thought to be abdominal obesity. Accurate diagnosis of abdominal obesity can be done by an x-ray computed tomography (CT) scan. But CT is expensive, bulky and entails the risks involved with radiation. To overcome such disadvantages, we attempted to develop a measuring device that could apply electrical impedance tomography to abdominal fat imaging. The device has 32 electrodes that can be attached to a subject's abdomen by a pneumatic mechanism. That way, electrode position data can be acquired simultaneously. An applied alternating current of 1.0 mArms was used at a frequency of 500 kHz. Sensed voltage data were carefully filtered to remove noise and processed to satisfy the reciprocal theorem. The image reconstruction software was developed concurrently, applying standard finite element methods and the Marquardt method to solve the mathematical inverse problem. The results of preliminary experiments showed that abdominal subcutaneous fat and the muscle surrounding the viscera could be imaged in humans. While our imaging of visceral fat was not of sufficient quality, it was suggested that we will be able to develop a safe and practical abdominal fat scanner through future improvements

  3. Hypnosis for functional abdominal pain.

    Science.gov (United States)

    Gottsegen, David

    2011-07-01

    Chronic abdominal pain is a common pediatric condition affecting 20% of the pediatric population worldwide. Most children with this disorder are found to have no specific organic etiology and are given the diagnosis of functional abdominal pain. Well-designed clinical trials have found hypnotherapy and guided imagery to be the most efficacious treatments for this condition. Hypnotic techniques used for other somatic symptoms are easily adaptable for use with functional abdominal pain. The author discusses 2 contrasting hypnotic approaches to functional abdominal pain and provides implications for further research. These approaches may provide new insights into this common and complex disorder. PMID:21922712

  4. Children's (Pediatric) Abdominal Ultrasound Imaging

    Medline Plus

    Full Text Available ... through blood vessels. Ultrasound imaging is a noninvasive medical test that helps physicians diagnose and treat medical conditions. Children's (pediatric) abdominal ultrasound imaging produces pictures ...

  5. Practical pediatric abdominal CT

    International Nuclear Information System (INIS)

    This course is designed to help the radiologist in a hospital setting successfully approach abdominal CT in the infant and child. Emphasis is placed on techniques necessary for a high-quality examination of the upper abdomen, as applied to common pediatric problems such as trauma, tumor, and infection. Material is presented on technical considerations, including patient sedation, preparation, and potential pitfalls and helpful hints for imaging. An emphasis is placed on dynamic scanning with table incrementation. The section on trauma focuses on an approach to imaging the abdomen in the injured child, typical injuries, patterns of injury in the upper abdomen, and why CT is the best imaging modality for blunt upper abdominal trauma. The discussion of tumor imaging reviews the appearance of typical childhood neoplasia including Wilms tumor, neuroblastoma, non-Hodgkin and Burkitt lymphoma, and disseminated solid tumors such as rhabdomyosarcoma. The authors emphasize what to look for and where, both on initial and on later (for recurrences) examinations. The discussion of infection addresses detection of abscesses and occult infections in children, as well as imaging of abscesses prior to intervention

  6. Nontraumatic abdominal emergencies: acute abdominal pain: diagnostic strategies

    Energy Technology Data Exchange (ETDEWEB)

    Marincek, B. [Institute of Diagnostic Radiology, University Hospital Zurich, Raemistrasse 100, 8091 Zurich (Switzerland)

    2002-09-01

    Common causes of acute abdominal pain include appendicitis, cholecystitis, bowel obstruction, urinary colic, perforated peptic ulcer, pancreatitis, diverticulitis, and nonspecific, nonsurgical abdominal pain. The topographic classification of acute abdominal pain (pain in one of the four abdominal quadrants, diffuse abdominal pain, flank or epigastric pain) facilitates the choice of the imaging technique. The initial radiological evaluation often consists of plain abdominal radiography, despite significant diagnostic limitations. The traditional indications for plain films - bowel obstruction, pneumoperitoneum, and the search of ureteral calculi - are questioned by helical computed tomography (CT). Although ultrasonography (US) is in many centers the modality of choice for imaging the gallbladder and the pelvis in children and women of reproductive age, CT is considered to be one of the most valued tools for triaging patients with acute abdominal pain. CT is particularly beneficial in patients with marked obesity, unclear US findings, bowel obstruction, and multiple lesions. The introduction of multidetector row CT (MDCT) has further enhanced the utility of CT in imaging patients with acute abdominal pain. (orig.)

  7. Meta-Analysis: Association Between Wrist Posture and Carpal Tunnel Syndrome Among Workers

    OpenAIRE

    You, Doohee; Smith, Allan H; Rempel, David

    2014-01-01

    Background Carpal tunnel syndrome (CTS) is a common work-related peripheral neuropathy. In addition to grip force and repetitive hand exertions, wrist posture (hyperextension and hyperflexion) may be a risk factor for CTS among workers. However, findings of studies evaluating the relationship between wrist posture and CTS are inconsistent. The purpose of this paper was to conduct a meta-analysis of existing studies to evaluate the evidence of the relationship between wrist posture at work and...

  8. A study comparing MRI with clinical examinations on wrists with rheumatoid arthritis

    International Nuclear Information System (INIS)

    Objective: To study the appearances of rheumatoid arthritis (RA) on MRI, and compare MRI with clinical examinations on wrists with RA. Methods: Fifty patients, fulfilled 1987 American Rheumatism Association (ARA) revised criteria, and 10 age-matched healthy controls entered the study. T1-weighted spin echo, short time inversion recovery (STIR) of both wrists, gadolinium contrast material-enhanced sequences of dominant wrists were performed in the coronal planes. MRl, plain wrist radiographs, clinical date, including swollen joint, patient global assessment (AIMS), and laboratory examinations including ESR, RF, APF, and AKA were obtained at the same time. Functional disability was assessed using the Health Assessment Questionnaire Disability Score. Results: In 50 patients, all had pannus on MRI of wrists, 38 patients had enhanced signal intensity for pannus, 21 patients had bone marrow edema, 37 patients had joint effusion, and 37 patients had bone erosions. There were significant difference in the ESR, HAQ, AIMS as well as swollen joint count between patients with bone marrow edema and patients without bone marrow edema (P2=5.06, P=0.025; χ2=5.59, P=0.018). Number of patients with MRI erosion of wrists was associated with the number of patients without MRI bone marrow edema of wrists (χ2=5.11, P=0.024). Conclusion: MRI can find the appearances of wrists with RA. Comparing MRI with clinical examinations on wrists with RA, authors can assess and evaluate the role of MRI on RA

  9. A flexure-based wrist for needle-sized surgical robots

    Science.gov (United States)

    Losey, Dylan P.; York, Peter A.; Swaney, Philip J.; Burgner, Jessica; Webster, Robert J.

    2013-03-01

    We present a novel flexure-based wrist design intended for use with needle-sized robotic manipulators. It is designed to be mounted at the tip of a traditional surgical needle, deployed through an endoscope working channel, or attached to the tip of a concentric tube robot. In all these applications, the wrist enables dexterity in small spaces. The wrist consists of two stacked flexure joints that are actuated by thin pull wires. In this paper we present the design of the wrist, its kinematics, and an experimental evaluation of the relationship between actuation force and tip displacement conducted using a scale model.

  10. Robotic Mirror Therapy System for Functional Recovery of Hemiplegic Arms.

    Science.gov (United States)

    Beom, Jaewon; Koh, Sukgyu; Nam, Hyung Seok; Kim, Wonshik; Kim, Yoonjae; Seo, Han Gil; Oh, Byung-Mo; Chung, Sun Gun; Kim, Sungwan

    2016-08-15

    Mirror therapy has been performed as effective occupational therapy in a clinical setting for functional recovery of a hemiplegic arm after stroke. It is conducted by eliciting an illusion through use of a mirror as if the hemiplegic arm is moving in real-time while moving the healthy arm. It can facilitate brain neuroplasticity through activation of the sensorimotor cortex. However, conventional mirror therapy has a critical limitation in that the hemiplegic arm is not actually moving. Thus, we developed a real-time 2-axis mirror robot system as a simple add-on module for conventional mirror therapy using a closed feedback mechanism, which enables real-time movement of the hemiplegic arm. We used 3 Attitude and Heading Reference System sensors, 2 brushless DC motors for elbow and wrist joints, and exoskeletal frames. In a feasibility study on 6 healthy subjects, robotic mirror therapy was safe and feasible. We further selected tasks useful for activities of daily living training through feedback from rehabilitation doctors. A chronic stroke patient showed improvement in the Fugl-Meyer assessment scale and elbow flexor spasticity after a 2-week application of the mirror robot system. Robotic mirror therapy may enhance proprioceptive input to the sensory cortex, which is considered to be important in neuroplasticity and functional recovery of hemiplegic arms. The mirror robot system presented herein can be easily developed and utilized effectively to advance occupational therapy.

  11. Robotic Mirror Therapy System for Functional Recovery of Hemiplegic Arms.

    Science.gov (United States)

    Beom, Jaewon; Koh, Sukgyu; Nam, Hyung Seok; Kim, Wonshik; Kim, Yoonjae; Seo, Han Gil; Oh, Byung-Mo; Chung, Sun Gun; Kim, Sungwan

    2016-01-01

    Mirror therapy has been performed as effective occupational therapy in a clinical setting for functional recovery of a hemiplegic arm after stroke. It is conducted by eliciting an illusion through use of a mirror as if the hemiplegic arm is moving in real-time while moving the healthy arm. It can facilitate brain neuroplasticity through activation of the sensorimotor cortex. However, conventional mirror therapy has a critical limitation in that the hemiplegic arm is not actually moving. Thus, we developed a real-time 2-axis mirror robot system as a simple add-on module for conventional mirror therapy using a closed feedback mechanism, which enables real-time movement of the hemiplegic arm. We used 3 Attitude and Heading Reference System sensors, 2 brushless DC motors for elbow and wrist joints, and exoskeletal frames. In a feasibility study on 6 healthy subjects, robotic mirror therapy was safe and feasible. We further selected tasks useful for activities of daily living training through feedback from rehabilitation doctors. A chronic stroke patient showed improvement in the Fugl-Meyer assessment scale and elbow flexor spasticity after a 2-week application of the mirror robot system. Robotic mirror therapy may enhance proprioceptive input to the sensory cortex, which is considered to be important in neuroplasticity and functional recovery of hemiplegic arms. The mirror robot system presented herein can be easily developed and utilized effectively to advance occupational therapy. PMID:27583794

  12. Anatomical peculiarities of sensory tracts of the wrist median nerve pedicled with nutrient vessels transferring to bridge wrist ulnar nerve defect

    Institute of Scientific and Technical Information of China (English)

    Sixin Ouyang; Zhenshan Peng; Jianguo Tan; Tianhong Peng; Jianzhong Xiao

    2006-01-01

    BACKGROUND: Translocation or transplantation of nerve stem has good effect;however, nervous function of donator is completely lost. If some nerve stem is damaged, sensory tracts are intercepted from the near nerve stem by nutrient vessels to regard as neural graft for transferring and bridging which may repair injured nerve and decrease neural functional loss of donator.OBJECTIVE: To observe anatomical peculiarities on sensory tracts of wrist median nerve pedicled with nutrient vessels transferring to bridge wrist ulnar nerve defect, and to investigate its feasibility.DESIGN: Duplicated and measured design.SETTING: Anatomy Department of Medical College affiliated to Nanhua University.MATERIALS: A total of 14 samples of upper limbs were selected from adult unnamed corpse and volunteers.METHODS: The experiment was completed at the Clinical Application Anatomy Laboratory of Medical College affiliated to Nanhua University from September to November 2005. Samples were perfused with red emulsion through artery to observe length, fibrous bands and blood supply of median nerve and ulnar nerve at wrist. Boundary of median nerve at wrist ranged from superficial site between flexor carpi radialis and palmaris longus to branch of common palmar digital nerves. Ulnar nerve at wrist ranged from branch of back of the hand to site of common palmar digital nerves. Proximal boundary of the two nerves was crossed from 1/8 to 2/8 region of forearm. Samples of upper limbs from 1 case were selected to simulate operation on sensory tracts of wrist median nerve pedicled with nutrient vessels transferring to bridge wrist ulnar nerve.MAIN OUTCOME MEASURES: Anatomical peculiarities on sensory tracts of wrist median nerve pedicled with nutrient vessels transferring to bridge wrist ulnar nerve defect.RESULTS: ① The length of wrist median nerves was 7.8 (7.5-8.1) cm. There were 19 to 27 nerve tracts in it and the majority belonged to sensory tracts on the ulnar side, in which non

  13. Real-time magnetic resonance imaging (MRI during active wrist motion--initial observations.

    Directory of Open Access Journals (Sweden)

    Robert D Boutin

    Full Text Available BACKGROUND: Non-invasive imaging techniques such as magnetic resonance imaging (MRI provide the ability to evaluate the complex anatomy of bone and soft tissues of the wrist without the use of ionizing radiation. Dynamic instability of wrist--occurring during joint motion--is a complex condition that has assumed increased importance in musculoskeletal medicine. The objective of this study was to develop an MRI protocol for evaluating the wrist during continuous active motion, to show that dynamic imaging of the wrist is realizable, and to demonstrate that the resulting anatomical images enable the measurement of metrics commonly evaluated for dynamic wrist instability. METHODS: A 3-Tesla "active-MRI" protocol was developed using a bSSFP sequence with 475 ms temporal resolution for continuous imaging of the moving wrist. Fifteen wrists of 10 asymptomatic volunteers were scanned during active supination/pronation, radial/ulnar deviation, "clenched-fist", and volarflexion/dorsiflexion maneuvers. Two physicians evaluated distal radioulnar joint (DRUJ congruity, extensor carpi ulnaris (ECU tendon translation, the scapholunate (SL interval, and the SL, radiolunate (RL and capitolunate (CL angles from the resulting images. RESULTS: The mean DRUJ subluxation ratio was 0.04 in supination, 0.10 in neutral, and 0.14 in pronation. The ECU tendon was subluxated or translated out of its groove in 3 wrists in pronation, 9 wrists in neutral, and 11 wrists in supination. The mean SL interval was 1.43 mm for neutral, ulnar deviation, radial deviation positions, and increased to 1.64 mm during the clenched-fist maneuver. Measurement of SL, RL and CL angles in neutral and dorsiflexion was also accomplished. CONCLUSION: This study demonstrates the initial performance of active-MRI, which may be useful in the investigation of dynamic wrist instability in vivo.

  14. Extensor tendon rupture and three-dimensional computed tomography imaging of the rheumatoid wrist

    Energy Technology Data Exchange (ETDEWEB)

    Abe, Asami; Ishikawa, Hajime; Murasawa, Akira; Nakazono, Kiyoshi [Niigata Rheumatic Center, Department of Rheumatology, Shibata, Niigata (Japan)

    2010-04-15

    Extensor tendon rupture on the dorsum of the wrist is commonly seen in patients with rheumatoid arthritis (RA). The diagnosis of tendon rupture is usually straightforward, but it is sometimes difficult in the hand with complex deformity. The purposes of this study were to investigate the reliability of three-dimensional computed tomography (3DCT) imaging of extensor tendons in the rheumatoid wrist and in the normal wrist and to clarify the validity of its clinical application to the diagnosis of tendon rupture in the rheumatoid wrist. Preoperative 3DCT images of 48 wrists of 45 patients with RA and 3DCT images of 38 wrists of 38 healthy volunteers were reviewed retrospectively by six orthopaedic surgeons who were unaware of all other study data. Extensor tendon rupture was verified by operation on 20 rheumatoid wrists. Regarding interobserver and intra-observer reliabilities of 3DCT imaging of the extensor tendons, agreement with respect to tendon rupture in this study group was high, and Cohen's kappa ({kappa}) coefficient was variable, depending on the individual tendon. Positive predictive value (PPV) of tendon rupture in the extensor digiti minimi (EDM), extensor digitorum communis (EDC) V and IV and extensor pollicis longs (EPL) tendons was more than 60%, but those for the other extensor tendons were less than 50%. Negative predictive value (NPV) was more than 96% in all extensor tendons, in both rheumatoid and normal wrists. Extensor tendons in normal and rheumatoid wrists were well depicted by 3DCT imaging. In the rheumatoid wrists, extensors of the ring and little fingers and the thumb were depicted more accurately than those to the other fingers. 3DCT imaging was clinically applicable to wrists for which it was difficult to diagnose by physical examination a definite cause for the loss of extension of the fingers. (orig.)

  15. Kinematics and Dynamics of an Asymmetrical Parallel Robotic Wrist

    Directory of Open Access Journals (Sweden)

    Guanglei Wu

    2014-01-01

    Full Text Available This paper introduces an asymmetrical parallel robotic wrist, which can generate a decoupled unlimited-torsion motion and achieve high positioning accuracy. The kinematics, dexterity, and singularities of the manipulator are investigated to visualize the performance contours of the manipulator. Using the method of Lagrange multipliers and considering all the mobile components, the equations of motion of the manipulator are derived to investigate the dynamic characteristics efficiently. The developed dynamic model is numerically illustrated and compared with its simplified formulation to show its computation accuracy.

  16. Vibration transmissibility characteristics of the human hand-arm system under different postures, hand forces and excitation levels

    Science.gov (United States)

    Adewusi, S. A.; Rakheja, S.; Marcotte, P.; Boutin, J.

    2010-07-01

    Biodynamic responses of the hand-arm system have been mostly characterized in terms of driving-point force-motion relationships, which have also served as the primary basis for developing the mechanical-equivalent models. The knowledge of localized vibration responses of the hand-arm segments could help derive more effective biodynamic models. In this study, the transmission of z h-axis handle vibration to the wrist, elbow and the shoulder of the human hand and arm are characterized in the laboratory for the bent-arm and extended arm postures. The experiments involved six subjects grasping a handle subject to two different magnitudes of broad-band random vibration, and nine different combinations of hand grip and push forces. The vibration transmissibility data were acquired in the z h- and y h-axis at the wrist and shoulder, and along all the three axes around the elbow joint. The results show that the human hand-arm system in an extended arm posture amplifies the vibration transmitted to the upper-arm and the whole-body at frequencies below 25 Hz, but attenuates the vibration above 25 Hz more effectively than the bent-arm posture, except at the shoulder. The magnitudes of transmitted vibration under an extended arm posture along the y h-axis were observed to be nearly twice those for the bent-arm posture in the low frequency region. The results further showed that variations in the grip force mostly affect vibration transmissibility and characteristic frequencies of the forearm, while changes in the push force influenced the dynamic characteristics of the entire hand-arm system. The magnitudes of transmitted vibration in the vicinity of the characteristic frequencies were influenced by the handle vibration magnitude.

  17. Penetrating abdominal trauma.

    Science.gov (United States)

    Henneman, P L

    1989-08-01

    The management of patients with penetrating abdominal trauma is outlined in Figure 1. Patients with hemodynamic instability, evisceration, significant gastrointestinal bleeding, peritoneal signs, gunshot wounds with peritoneal violation, and type 2 and 3 shotgun wounds should undergo emergency laparotomy. The initial ED management of these patients includes airway management, monitoring of cardiac rhythm and vital signs, history, physical examination, and placement of intravenous lines. Blood should be obtained for initial hematocrit, type and cross-matching, electrolytes, and an alcohol level or drug screen as needed. Initial resuscitation should utilize crystalloid fluid replacement. If more than 2 liters of crystalloid are needed to stabilize an adult (less in a child), blood should be given. Group O Rh-negative packed red blood cells should be immediately available for a patient in impending arrest or massive hemorrhage. Type-specific blood should be available within 15 minutes. A patient with penetrating thoracic and high abdominal trauma should receive a portable chest x-ray, and a hemo- or pneumothorax should be treated with tube thoracostomy. An unstable patient with clinical signs consistent with a pneumothorax, however, should receive a tube thoracostomy prior to obtaining roentgenographic confirmation. If time permits, a nasogastric tube and Foley catheter should be placed, and the urine evaluated for blood (these procedures can be performed in the operating room). If kidney involvement is suspected because of hematuria or penetrating trauma in the area of a kidney or ureter in a patient requiring surgery, a single-shot IVP should be performed either in the ED or the operating room. An ECG is important in patients with possible cardiac involvement and in patients over the age of 40 going to the operating room. Tetanus status should be updated, and appropriate antibiotics covering bowel flora should be given. Operative management should rarely be delayed

  18. Economics of abdominal wall reconstruction.

    Science.gov (United States)

    Bower, Curtis; Roth, J Scott

    2013-10-01

    The economic aspects of abdominal wall reconstruction are frequently overlooked, although understandings of the financial implications are essential in providing cost-efficient health care. Ventral hernia repairs are frequently performed surgical procedures with significant economic ramifications for employers, insurers, providers, and patients because of the volume of procedures, complication rates, the significant rate of recurrence, and escalating costs. Because biological mesh materials add significant expense to the costs of treating complex abdominal wall hernias, the role of such costly materials needs to be better defined to ensure the most cost-efficient and effective treatments for ventral abdominal wall hernias. PMID:24035086

  19. Prediction of Energy Expenditure from Wrist Accelerometry in People with and without Down Syndrome

    Science.gov (United States)

    Agiovlasitis, Stamatis; Motl, Robert W.; Foley, John T.; Fernhall, Bo

    2012-01-01

    This study examined the relationship between energy expenditure and wrist accelerometer output during walking in persons with and without Down syndrome (DS). Energy expenditure in metabolic equivalent units (METs) and activity-count rate were respectively measured with portable spirometry and a uniaxial wrist accelerometer in 17 persons with DS…

  20. The investigation of the functions of the wrists after the resection of radial head

    OpenAIRE

    Domanic, Unsal; Cakmak, Mehmet; Taser, Omer; Hamzaoglu, Azmi

    2004-01-01

    The functions of the wrists of 8 cases in which the resection of radial head were applied, have been studied in later period. After resection, it was retermined that the radius slids usualiy towards the proximale, but there was no definite relation between this slip and complaints which exist at the wrist.

  1. Marker placement to describe the wrist movements during activities of daily living in cyclical tasks

    NARCIS (Netherlands)

    Murgia, A; Kyberd, PJ; Chappell, PH; Light, CM

    2004-01-01

    Objective. To describe the wrist kinematics during movement through free range of motion and activities of daily living using a cyclical task. Design. The wrist angles were initially calculated in a calibration trial and then in two selected activities of daily living (jar opening and carton pouring

  2. 78 FR 36643 - Proposed Information Collection (Wrist Conditions Disability Benefits Questionnaire) Activity...

    Science.gov (United States)

    2013-06-18

    ... AFFAIRS Proposed Information Collection (Wrist Conditions Disability Benefits Questionnaire) Activity... . Please refer to ``OMB Control No. 2900--NEW (Wrist Conditions Disability Benefits Questionnaire)'' in any... Conditions Disability Benefits Questionnaire, VA Form 21-0960M-16. OMB Control Number: 2900-NEW...

  3. 78 FR 36307 - Proposed Information Collection (Wrist Conditions Disability Benefits Questionnaire) Activity...

    Science.gov (United States)

    2013-06-17

    ... AFFAIRS Proposed Information Collection (Wrist Conditions Disability Benefits Questionnaire) Activity... . Please refer to ``OMB Control No. 2900-NEW (Wrist Conditions Disability Benefits Questionnaire)'' in any... Conditions Disability Benefits Questionnaire, VA Form 21-0960M-16. OMB Control Number: 2900-NEW...

  4. MRI for the initial evaluation of acute wrist, knee, and ankle trauma

    NARCIS (Netherlands)

    J.J. Nikken (Jeroen)

    2003-01-01

    textabstractIn this thesis we study the application of MRI in acute trauma of wrist, knee, and ankle, evaluating its potentials, its effects, and its costs. Our aim was to use MRI in all patients with acute trauma of wrist, knee, and ankle, without increasing the overall costs to society, potentiall

  5. Reconstructed animation from four-phase grip MRI of the wrist with ulnar-sided pain.

    Science.gov (United States)

    Oda, T; Wada, T; Iba, K; Aoki, M; Tamakawa, M; Yamashita, T

    2013-09-01

    In order to visualize dynamic variations related to ulnar-sided wrist pain, animation was reconstructed from T2* coronal-sectioned magnetic resonance imaging in each of the four phases of grip motion for nine wrists in patients with ulnar pain. Eight of the nine wrists showed a positive ulnar variance of less than 2 mm. Ulnocarpal impaction and triangular fibrocartilage complex injury were assessed on the basis of animation and arthroscopy, respectively. Animation revealed ulnocarpal impaction in four wrists. In one of the four wrists, the torn portion of the articular disc was impinged between the ulnar head and ulnar proximal side of the lunate. In another wrist, the ulnar head impacted the lunate directly through the defect in the articular disc that had previously been excised. An ulnar shortening osteotomy successfully relieved ulnar wrist pain in all four cases with both ulnocarpal impaction and Palmer's Class II triangular fibrocartilage complex tears. This method demonstrated impairment of the articular disc and longitudinal instability of the distal radioulnar joint simultaneously and should be of value in investigating dynamic pathophysiology causing ulnar wrist pain.

  6. Scaphoid dislocation associated with axial carpal dissociation during volar flexion of the wrist: a case report.

    Science.gov (United States)

    Kanaya, Kohei; Wada, Takuro; Yamashita, Toshihiko

    2010-01-01

    We present the first report of a patient with an isolated scaphoid dislocation with axial carpal dissociation sustained during volar flexion of the wrist. The scaphoid was dislocated to the radial side of the radial styloid process and was slightly shifted to the dorsal side. It was shown that the position of the wrist played an irrelevant role for occurring scaphoid dislocation.

  7. 21 CFR 888.3790 - Wrist joint metal constrained cemented prosthesis.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Wrist joint metal constrained cemented prosthesis... constrained cemented prosthesis. (a) Identification. A wrist joint metal constrained cemented prosthesis is a... as cobalt-chromium-molybdenum, and is limited to those prostheses intended for use with bone...

  8. Wrist ultrasonography of ossification centers during the adolescent growth spurt

    International Nuclear Information System (INIS)

    High-resolution ultrasound (US) of the hand and wrist was compared with radiography in 26 patients (mean age: 11.4 years) to be submitted to orthodontic therapy. US scans were targeted on the ossification centers critical for the growth spurt, namely the pisiform and abductor sesamoid bones of the metacarpophalaneal joint of the thumb and the cartilage of the distal phalanx of the third finger. All images were retrospectively reviewed on a double-blind basis by two independent observers who gave a conspicuity score to each structure of interest. All the scores were submitted to statistical analysis with the Wilcoxon test. US images clearly demonstrated the initial appearance of the ossification centers of the pisiform and sesamoid bones. These structures appeared as hyperechoic spots causing marked acoustic shadowing. The persistence of the phalangeal cartilage was depicted as a thin rim interrupting the hyperechoic cortical profile of the bone. Us results were statistically equivalent to radiographic findings in the pisiform. A statistically significant difference between the two techniques was found in the third finger cartilage because its profile was poorly depicted on some US images. To conclude, wrist US is proposed as a simple and valuable radiation-free support examination for the follow-up of skeletal maturation in adolescents to be submitted to orthodontic therapy

  9. An Exoskeleton Robot for Human Forearm and Wrist Motion Assist

    Science.gov (United States)

    Ranathunga Arachchilage Ruwan Chandra Gopura; Kiguchi, Kazuo

    The exoskeleton robot is worn by the human operator as an orthotic device. Its joints and links correspond to those of the human body. The same system operated in different modes can be used for different fundamental applications; a human-amplifier, haptic interface, rehabilitation device and assistive device sharing a portion of the external load with the operator. We have been developing exoskeleton robots for assisting the motion of physically weak individuals such as elderly or slightly disabled in daily life. In this paper, we propose a three degree of freedom (3DOF) exoskeleton robot (W-EXOS) for the forearm pronation/ supination motion, wrist flexion/extension motion and ulnar/radial deviation. The paper describes the wrist anatomy toward the development of the exoskeleton robot, the hardware design of the exoskeleton robot and EMG-based control method. The skin surface electromyographic (EMG) signals of muscles in forearm of the exoskeletons' user and the hand force/forearm torque are used as input information for the controller. By applying the skin surface EMG signals as main input signals to the controller, automatic control of the robot can be realized without manipulating any other equipment. Fuzzy control method has been applied to realize the natural and flexible motion assist. Experiments have been performed to evaluate the proposed exoskeleton robot and its control method.

  10. Micromanaging Abdominal Aortic Aneurysms

    Directory of Open Access Journals (Sweden)

    Lars Maegdefessel

    2013-07-01

    Full Text Available The contribution of abdominal aortic aneurysm (AAA disease to human morbidity and mortality has increased in the aging, industrialized world. In response, extraordinary efforts have been launched to determine the molecular and pathophysiological characteristics of the diseased aorta. This work aims to develop novel diagnostic and therapeutic strategies to limit AAA expansion and, ultimately, rupture. Contributions from multiple research groups have uncovered a complex transcriptional and post-transcriptional regulatory milieu, which is believed to be essential for maintaining aortic vascular homeostasis. Recently, novel small noncoding RNAs, called microRNAs, have been identified as important transcriptional and post-transcriptional inhibitors of gene expression. MicroRNAs are thought to “fine tune” the translational output of their target messenger RNAs (mRNAs by promoting mRNA degradation or inhibiting translation. With the discovery that microRNAs act as powerful regulators in the context of a wide variety of diseases, it is only logical that microRNAs be thoroughly explored as potential therapeutic entities. This current review summarizes interesting findings regarding the intriguing roles and benefits of microRNA expression modulation during AAA initiation and propagation. These studies utilize disease-relevant murine models, as well as human tissue from patients undergoing surgical aortic aneurysm repair. Furthermore, we critically examine future therapeutic strategies with regard to their clinical and translational feasibility.

  11. Abdominal aortic feminism.

    Science.gov (United States)

    Mortimer, Alice Emily

    2014-01-01

    A 79-year-old woman presented to a private medical practice 2 years previously for an elective ultrasound screening scan. This imaging provided the evidence for a diagnosis of an abdominal aortic aneurysm (AAA) to be made. Despite having a number of recognised risk factors for an AAA, her general practitioner at the time did not follow the guidance set out by the private medical professional, that is, to refer the patient to a vascular specialist to be entered into a surveillance programme and surgically evaluated. The patient became symptomatic with her AAA, was admitted to hospital and found to have a tender, symptomatic, 6 cm leaking AAA. She consented for an emergency open AAA repair within a few hours of being admitted to hospital, despite the 50% perioperative mortality risk. The patient spent 4 days in intensive care where she recovered well. She was discharged after a 12 day hospital stay but unfortunately passed away shortly after her discharge from a previously undiagnosed gastric cancer.

  12. Skill Analysis of the Wrist Release in the Golf Swings Utilizing Shaft Elasticity

    Science.gov (United States)

    Suzuki, Soichiro; Hoshino, Yohei; Kobayashi, Yukinori

    This study analyzes the skill component of the wrist release in the golf swing by employing a three-dimensional dynamic model considering vibration of the club shaft. It is observed that professional and expert golfers relax their wrists in the swing motion as a "natural" or "late" release. Thus, the relationship between the timing of the wrist release and the shaft vibration is examined in this study. First, it is demonstrated that "natural release" at the zero-crossing point of the bending vibration of the shaft efficiently increases the head speed at impact. In the next step, the "late hitting" condition is imposed upon the model. It is demonstrated that "late hitting" could further improve the efficiency of the swing motion. Finally, the skill component in the wrist release for the long drive is experimentally verified by measuring the movement of the wrist and the dynamic deformation of the shaft during the downswing.

  13. Complete palmer lunate enucleation——is proximal row carpectomy or wrist arthrodesis the only choice?

    Institute of Scientific and Technical Information of China (English)

    Atin Jaiswal; Naiman Deepak Kachchhap; Yashwant S Tanwar; Masood Habib; Birendra Kumar

    2013-01-01

    Perilunate dislocations are rare injuries of the wrist and complete dislocation of the lunate is also rare.There is controversy in literature regarding the optimal management of such injuries.Complete lunate enucleation is associated with high rate of osteonecrosis of lunate thus wrist arthrodesis or proximal row carpectomy has been advocated as primary treatment for such injuries.We report a case of transradial styloid complete palmar lunate enucleation in a 25-year-old male patient who sustained injury to the left wrist due to fall on outstretched hand.Carpal row salvage surgery initially by closed reduction and wrist distractor application followed by open reduction and internal fixation with K-wires along with ligamentous repair resulted in restoration of normal wrist anatomy and good functional outcome.As many of these injuries are missed on initial presentation and outcome is poor for missed injuries,prompt diagnosis and early surgical management to restore vascularity of lunate is recommended.

  14. Arm morbidity after breast cancer treatments and analysis of related factors

    Energy Technology Data Exchange (ETDEWEB)

    Chun, Mi Son; Chung, Yong Sik; Kang, Seung Hee [College of Medicine, Ajou University, Seoul (Korea, Republic of); Moon, Seong Mi [Ajou University Hospital, Seoul (Korea, Republic of); Lee, Eun Hyun [Ajou University, Seoul (Korea, Republic of); Lee, Hye Jin; Song, Yeoung Suk [Yonsei University, Seoul (Korea, Republic of); Park, Hee Bung [Hee Bung Park Breast Clinic, Seoul (Korea, Republic of)

    2005-03-15

    To evaluate the incidence of arm morbidity following breast cancer surgery including axillary dissection and to identify related factors. One hundred and fifty nine patients were studied using a self-report questionnaire and a clinical examination. Lymphedema, reduction of range of motion in shoulder joint and subjective symptoms (pain, impaired arm movement, numbness, stiffness) were evaluated. As related factors, demographic, oncologic characteristics and types of treatment were analysed. The incidence of lymphedema ({>=} 2 cm difference comparing to unaffected arm) was 6.3%, 10.7%, 22.6% and 23.3% at each 10 cm, 20 cm, 30 cm, and 40 cm from wrist. Reduction of range of motion in shoulder joint ({>=} 20 degree difference comparing to unaffected arm) was noted in more than 1/3 patients for flexion, abduction and internal rotation. Especially the reduction of range of motion in internal rotation was severe (> 50% reduction) in 1/3 patients. Approximately 50 to 60% of patients complained impaired arm movement, numbness, stiffness and pain. Body mass index (BMI) was the significant risk factor for lymphedema. Lymphedema was present in 1/3 of patients and the common sites of edema were 30 cm 40 cm proximal from the wrist. Also most severe reduction of range of motion in shoulder joint was with internal rotation. There needs weight control for lymphedema because BMI was the significant risk factor for lymphedema. Also rehabilitation program for range of motion especially internal rotation in shoulder joint should be developed.

  15. Arm morbidity after breast cancer treatments and analysis of related factors

    International Nuclear Information System (INIS)

    To evaluate the incidence of arm morbidity following breast cancer surgery including axillary dissection and to identify related factors. One hundred and fifty nine patients were studied using a self-report questionnaire and a clinical examination. Lymphedema, reduction of range of motion in shoulder joint and subjective symptoms (pain, impaired arm movement, numbness, stiffness) were evaluated. As related factors, demographic, oncologic characteristics and types of treatment were analysed. The incidence of lymphedema (≥ 2 cm difference comparing to unaffected arm) was 6.3%, 10.7%, 22.6% and 23.3% at each 10 cm, 20 cm, 30 cm, and 40 cm from wrist. Reduction of range of motion in shoulder joint (≥ 20 degree difference comparing to unaffected arm) was noted in more than 1/3 patients for flexion, abduction and internal rotation. Especially the reduction of range of motion in internal rotation was severe (> 50% reduction) in 1/3 patients. Approximately 50 to 60% of patients complained impaired arm movement, numbness, stiffness and pain. Body mass index (BMI) was the significant risk factor for lymphedema. Lymphedema was present in 1/3 of patients and the common sites of edema were 30 cm 40 cm proximal from the wrist. Also most severe reduction of range of motion in shoulder joint was with internal rotation. There needs weight control for lymphedema because BMI was the significant risk factor for lymphedema. Also rehabilitation program for range of motion especially internal rotation in shoulder joint should be developed

  16. [ENDOVASCULAR ABDOMINAL AORTIC ANEURISM REPAIR].

    Science.gov (United States)

    Maĭstrenko, D N; Generalov, M I; Tarazov, P G; Zherebtsov, F K; Osovskikh, V V; Ivanov, A S; Oleshchuk, A N; Granov, D A

    2015-01-01

    The authors analyzed the single-center experience of treatment of 72 patients with abdominal aortic aneurisms and severe accompanied pathology. The aneurisms were repaired by stent-grafts. All the patients had abdominal aortic aneurisms with the diameters from 41 to 84 mm against the background of severe somatic pathology. It was a contraindication to planned open surgery. An installation of stent-graft was successful in all 72 follow-ups. It wasn't necessary to use a conversion to open surgery. The follow-up period consisted of 44,6?2,1 months. Control ultrasound and computer tomography studies hadn't revealed an increase of aneurism sack sizes or "eakages". A reduction of abdominal aortic aneurism sizes was noted in 37 patients on 4-5% during first year after operation. The stent-graft implantation extends the possibilities of abdominal aortic aneurism treatment for patients from a high surgical risk group. PMID:26234059

  17. Intra-abdominal tuberculous peritonitis

    Energy Technology Data Exchange (ETDEWEB)

    Schneider, G.; Ahlhelm, F.; Altmeyer, K.; Kramann, B. [Dept. of Diagnostic Radiology, University Hospital, Homburg (Germany); Hennes, P. [Dept. of Pediatrics, University Hospital, Homburg (Germany); Pueschel, W. [Dept. of Pathology, University Hospital, Homburg (Germany); Karadiakos, N. [Dept. of Pediatric Surgery, University Hospital, Homburg (Germany)

    2001-07-01

    We report the case of a 15-year-old boy suffering from progressive dyspnea on exertion and painful abdominal protrusion. Final diagnosis of intra-abdominal tuberculosis (TB), including lymphadenopathy and abdominal abscess formation, was made following elective laparotomy. This type of disease is a rare manifestation of extrapulmonary tuberculosis. The imaging findings in unenhanced and contrast-enhanced MRI and laparoscopic images are presented. Differential diagnosis of abdominal abscess formation and other fungal or bacteriological infections, as well as the imaging findings of this type of lesion, are discussed. This case demonstrates that atypical manifestation of TB may remain unrecognized; thus, awareness of this kind of manifestation of tuberculosis may prevent patients from being subjected to inappropriate therapies. (orig.)

  18. JAMA Patient Page: Abdominal Hernia

    Science.gov (United States)

    ... an operation. Umbilical hernia Abdominal wall Intestinal loop Peritoneum Skin Peritoneum Umbilical annulus SYMPTOMS The first symptom of a ... vomiting, or constipation. Inguinal hernia Indirect inguinal hernia Peritoneum Deep inguinal ring Inguinal canal Superficial inguinal ring ...

  19. Children's (Pediatric) Abdominal Ultrasound Imaging

    Medline Plus

    Full Text Available ... located within a child's abdomen. A Doppler ultrasound study may be part of a child's abdominal ultrasound ... pain from the procedure. If a Doppler ultrasound study is performed, your child may actually hear pulse- ...

  20. Children's (Pediatric) Abdominal Ultrasound Imaging

    Medline Plus

    Full Text Available ... technique that allows the physician to see and evaluate blood flow through arteries and veins in the ... the procedure? Abdominal ultrasound imaging is performed to evaluate the: appendix stomach/ pylorus liver gallbladder spleen pancreas ...

  1. Wrist and digital joint motion produce unique flexor tendon force and excursion in the canine forelimb.

    Science.gov (United States)

    Lieber, R L; Silva, M J; Amiel, D; Gelberman, R H

    1999-02-01

    The force and excursion within the canine digital flexor tendons were measured during passive joint manipulations that simulate those used during rehabilitation after flexor tendon repair and during active muscle contraction, simulating the active rehabilitation protocol. Tendon force was measured using a small buckle placed upon the tendon while excursion was measured using a suture marker and video analysis method. Passive finger motion imposed with the wrist flexed resulted in dramatically lower tendon force (approximately 5 N) compared to passive motion imposed with the wrist extended (approximately 17 N). Lower excursions were seen at the level of the proximal interphalangeal joint with the wrist flexed (approximately 1.5 mm) while high excursion was observed when the wrist was extended or when synergistic finger and wrist motion were imposed (approximately 3.5 mm). Bivariate discriminant analysis of both force and excursion data revealed a natural clustering of the data into three general mechanical paradigms. With the wrist extended and with either one finger or four fingers manipulated, tendons experienced high loads of approximately 1500 g and high excursions of approximately 3.5 mm. In contrast, the same manipulations performed with the wrist flexed resulted in low tendon forces (4-8 N) and low tendon excursions of approximately 1.5 mm. Synergistic wrist and finger manipulation provided the third paradigm where tendon force was relatively low (approximately 4 N) but excursion was as high as those seen in the groups which were manipulated with the wrist extended. Active muscle contraction produced a modest tendon excursion (approximately 1 mm) and high or low tendon force with the wrist extended or flexed, respectively. These data provide the basis for experimentally testable hypotheses with regard to the factors that most significantly affect functional recovery after digital flexor tendon injury and define the normal mechanical operating characteristics

  2. Updates on abdominal desmoid tumors

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Desmoid tumor is a monoclonal, fibroblastic proliferation arising in musculoaponeurotic structures. This connective tissue hyperplasia infiltrates locally, recurs frequentiy after resection but does not metastasize. Abdominal desmoid occurs sporadically, in association with some familial syndromes and often represents a clinical dilemma for surgeons. The enigmatic biology and anatomical location of abdominal desmoids make treatment recommendations difficult. This distinct pathological entity is reviewed with a specific focus on aetiology and management.

  3. Component separation in abdominal trauma

    OpenAIRE

    Rawstorne, Edward; Smart, Christopher J.; Fallis, Simon A.; Suggett, Nigel

    2014-01-01

    Component separation is established for complex hernia repairs. This case presents early component separation and release of the anterior and posterior sheath to facilitate closure of the abdominal wall following emergency laparotomy, reinforcing the repair with a biological mesh. On Day 11 following an emergency laparotomy for penetrating trauma, this patient underwent component separation and release of the anterior and posterior sheath. An intra-abdominal biological mesh was secured, and t...

  4. Imaging of gastrointestinal and abdominal tuberculosis

    NARCIS (Netherlands)

    Vanhoenacker, FM; De Backer, AI; Op de Beeck, B; Maes, M; Van Altena, R; Van Beckevoort, D; Kersemans, P; De Schepper, AM

    2004-01-01

    This article discusses the range of manifestations of tuberculosis (TB) of the abdomen, including involvement of the gastrointestinal tract, the peritoneum, mesentery, omentum, abdominal lymph nodes, solid abdominal organs, the genital system and the abdominal aorta. Abdominal TB is a diagnostic cha

  5. A Novel, Open Access Method to Assess Sleep Duration Using a Wrist-Worn Accelerometer.

    Directory of Open Access Journals (Sweden)

    Vincent T van Hees

    Full Text Available Wrist-worn accelerometers are increasingly being used for the assessment of physical activity in population studies, but little is known about their value for sleep assessment. We developed a novel method of assessing sleep duration using data from 4,094 Whitehall II Study (United Kingdom, 2012-2013 participants aged 60-83 who wore the accelerometer for 9 consecutive days, filled in a sleep log and reported sleep duration via questionnaire. Our sleep detection algorithm defined (nocturnal sleep as a period of sustained inactivity, itself detected as the absence of change in arm angle greater than 5 degrees for 5 minutes or more, during a period recorded as sleep by the participant in their sleep log. The resulting estimate of sleep duration had a moderate (but similar to previous findings agreement with questionnaire based measures for time in bed, defined as the difference between sleep onset and waking time (kappa = 0.32, 95%CI:0.29,0.34 and total sleep duration (kappa = 0.39, 0.36,0.42. This estimate was lower for time in bed for women, depressed participants, those reporting more insomnia symptoms, and on weekend days. No such group differences were found for total sleep duration. Our algorithm was validated against data from a polysomnography study on 28 persons which found a longer time window and lower angle threshold to have better sensitivity to wakefulness, while the reverse was true for sensitivity to sleep. The novelty of our method is the use of a generic algorithm that will allow comparison between studies rather than a "count" based, device specific method.

  6. Tuberculous tenosynovitis of the wrist: MRI findings in three patients

    Energy Technology Data Exchange (ETDEWEB)

    Sueyoshi, E. [Department of Radiology, Nagasaki University School of Medicine, 1-7-1 Sakamoto, Nagasaki 852 (Japan); Uetani, M. [Department of Radiology, Nagasaki University School of Medicine, 1-7-1 Sakamoto, Nagasaki 852 (Japan); Hayashi, K. [Department of Radiology, Nagasaki University School of Medicine, 1-7-1 Sakamoto, Nagasaki 852 (Japan); Kohzaki, S. [Nagasaki Municipal Hospital, Nagasaki (Japan)

    1996-08-01

    We report recent MRI findings in patients with tuberculous tenosynovitis of the wrist. Marked synovial thickening around the flexor tendons and fluid in the tendon sheath were clearly shown on MRI. Post-contrast study was useful in distinguishing the thick tenosynovium from the surrounding structures and fluid in the tendon sheath. The well-enhanced tenosynovium was also seen in the carpal tunnel in all cases. On the basis of these findings, we could easily distinguish tenosynovitis from other soft-tissue-mass lesions, such as tumors or infected ganglia. Tuberculous tenosynovitis is often not diagnosed early, and its differentiation from soft tissue tumors may be clinically difficult. MRI, particularly post-contrast study, is useful for early diagnosis of, and planning treatment for, tuberculous tenosynovitis. (orig.). With 3 figs.

  7. [The monitor findings of digitalized conventional wrist x-rays].

    Science.gov (United States)

    Braunschweig, R; Bauer, J; Niemeier, R; Heuer, H; Maurer, F; Strayle, M; Kruft, S t; Reill, P

    1994-05-01

    The study aimed at proving the reliability of monitor systems with the matrix of 1024 x 768 for the detection of scaphoid fractures compared to conventional X-ray. Moreover, we were interested in the significance of procedures of digital imaging post processing, depending in particular on the experience of investigators. 5 investigators with different levels of experience analysed 57 X-rays of the wrist. They compared conventional X-rays with images on a high screen monitor system after the digitalisation of these X-rays by a CCD-scanner and analysed untreated and treated images. A 5-point scale ROC analysis was used for evaluation. The analysis covered a total of 1740 evaluations. The untreated images seen on the monitor system proved slightly better than conventional X-rays. Post-processing has no evident advantage over untreated images. Differing levels of experience had no effect whatsoever on the identification of findings. PMID:8173057

  8. The influence of elbow joint kinematics on wrist speed in cricket fast bowling.

    Science.gov (United States)

    Middleton, Kane Jytte; Alderson, Jacqueline Anne; Elliott, Bruce Clifford; Mills, Peter Michael

    2015-01-01

    This modelling study sought to describe the relationships between elbow joint kinematics and wrist joint linear velocity in cricket fast bowlers, and to assess the sensitivity of wrist velocity to systematic manipulations of empirical joint kinematic profiles. A 12-camera Vicon motion analysis system operating at 250 Hz recorded the bowling actions of 12 high performance fast bowlers. Empirical elbow joint kinematic data were entered into a cricket bowling specific "Forward Kinematic Model" and then subsequently underwent fixed angle, angular offset and angle amplification manipulations. A combination of 20° flexion and 20° abduction at the elbow was shown to maximise wrist velocity within the experimental limits. An increased elbow flexion offset manipulation elicited an increase in wrist velocity. Amplification of elbow joint flexion-extension angular displacement indicated that, contrary to previous research, elbow extension range of motion and angular velocity at the time of ball release were negatively related to wrist velocity. Some relationships between manipulated joint angular waveforms and wrist velocity were non-linear, supporting the use of a model that accounts for the non-linear relationships between execution and outcome variables in assessing the relationships between elbow joint kinematics and wrist joint velocity in cricket fast bowlers.

  9. The Potential Risk Factors Relevant to Lateral Epicondylitis by Wrist Coupling Posture.

    Directory of Open Access Journals (Sweden)

    Su-Ya Lee

    Full Text Available The use of awkward wrist postures and unskilled techniques might induce lateral epicondylitis. This study thus investigated the effects of wrist deviation combined with extension and movement velocity on the dynamic performances of the wrist muscles during the coupling posture via a custom-made bi-planar isokinetic dynamometer. Thirty subjects were recruited to perform the isokinetic testing. We measured the muscle strengths and activities for the wrist extensors and flexors during concentric and eccentric contractions at three movement velocities, 30°s-1, 90°s-1, and 180°s-1, combined with three wrist postures, neutral position (NP, radial deviation (RD, and ulnar deviation (UD. The root mean square (RMS of the electromyographic signal in the extensor digitorum communis (EDC, normalized peak torque of extensors, and ratio of normalized peak torque between wrist extensors and flexors, were all greater in the NP than RD and UD in both contractions. The ratio of RMS between EDC and flexor digitorum superficialis (FDS had a significantly greater value in RD than UD during the concentric contraction. The EDC showed significantly higher activity at the fast velocity in both contractions. Nevertheless, a significantly higher RMS of the electromyographic signal between EDC and FDS and the ratio of strength between wrist extensors and flexors were found at slow velocity in both contractions. The wrist deviation combined with extension and movement velocity of the wrist joint should thus be considered as influential factors which might alter the dynamic performances, and may result in further injury of the elbow joint.

  10. A clinical dilemma: abdominal tuberculosis

    Institute of Scientific and Technical Information of China (English)

    Oya Uygur-Bayramicli; G(u)l Dabak; Resat Dabak

    2003-01-01

    AIM: To evaluate the clinical, radiological and microbiological properties of abdominal tuberculosis (TB) and to discuss methods needed to get the diagnosis.METHODS: Thirty-one patients diagnosed as abdominal TB between March 1998 and December 2001 at the Gastroenterology Department of Kartal State Hospital,Istanbul, Turkey were evaluated prospectively. Complete physical examination, medical and family history, blood count erythrocyte sedimentation rate, routine biochemical tests,Mantoux skin test, chest X-ray and abdominal ultrasonography (USG) were performed in all cases, whereas microbiological examination of ascites, upper gastrointestinal endoscopy, colonoscopy or barium enema, abdominal tomography, mediastinoscopy, laparoscopy or laparotomy were done when needed.RESULTS: The median age of patients (14 females, 17males) was 34.2 years (range 15-65 years). The most frequent symptoms were abdominal pain and weight loss.Eleven patients had active pulmonary TB. The most common abdominal USG findings were ascites and hepatomegaly. Ascitic fluid analysis performed in 13 patients was found to be exudative and acid resistant bacilli were present in smear and cultured only in one patient with BacTec (3.2 %). Upper gastrointestinal endoscopy yielded nonspecific findings in 16 patients. Colonoscopy performed in 20 patients showed ulcers in 9 (45 %), nodules in 2 (10 %)and, stricture, polypoid lesions, granulomatous findings in terminal ileum and rectal fistula each in one patient (5 %).Laparoscopy on 4 patients showed dilated bowel loops,thickening in the mesentery, multiple ulcers and tubercles on the peritoneum. Patients with abdominal TB were divided into three groups according to the type of involvement.Fifteen patients (48 %) had intestinal TB, L1 patients (35.2 %) had tuberculous peritonitis and 5 (16.8 %)tuberculous lymphadenitis. The diagnosis of abdominal TB was confirmed microbiologically in 5 (16 %) and histopathologically in 19 patients (60.8 %). The

  11. Uso da peritoneostomia na sepse abdominal Laparostomy in abdominal sepsis

    OpenAIRE

    Juvenal da Rocha Torres Neto; Adonai Pinheiro Barreto; Ana Carolina Lisboa Prudente; Allisson Mário dos Santos; Rodrigo Rocha Santiago

    2007-01-01

    Dentre as modalidades terapêuticas da sepse abdominal, a peritoneostomia tem papel decisivo permitindo explorações e lavagens da cavidade de forma facilitada. Observamos pacientes com diagnóstico clínico de sepse abdominal internados no Serviço de Coloproctologia do Hospital Universitário da Universidade Federal de Sergipe, e que foram submetidos a peritoneostomia de janeiro de 2004 a janeiro de 2006. Foram avaliados quanto ao diagnóstico primário e secundário, tipo de peritonite secundária, ...

  12. Abdominal aortic grafting for spontaneous infrarenal abdominal aortic dissection.

    Science.gov (United States)

    Iwasaki, Hiroto; Shibuya, Takashi; Shintani, Takashi; Uenaka, Hisazumi; Suehiro, Shigefumi; Satoh, Hisashi

    2010-02-01

    This case report concerns a 62-year-old woman with spontaneous infrarenal abdominal aortic dissection, which developed into claudication and rest pain in the lower extremity. Multi-row detector computed tomography showed the entry site of the abdominal aortic dissection at the second lumbar artery, while the reentry site was found intraoperatively at the median sacral artery, indicating that the false lumen had progressed and compressed the true lumen. A direct approach involving grafting appears to be an effective procedure for resolving mesenteric and lower extremity hypoperfusion due to aortic dissection with a dilated false channel, even during the acute period. PMID:19879731

  13. Wrist flexion as an adjunct to the diagnosis of carpal tunnel syndrome.

    Science.gov (United States)

    Dunnan, J B; Waylonis, G W

    1991-03-01

    The effects of five minutes of wrist flexion on median motor and sensory evoked potential latencies in 87 individuals were studied. Nineteen subjects had carpal tunnel syndrome (CTS) as diagnosed by increased median nerve latencies across the wrist, and 68 had values in the normal range and were assigned to the control group. A slight prolongation of up to 0.5m sec of evoked potential latencies was observed in both groups after flexion, but the differences between the two groups were not significant to establish the value of adding wrist flexion to conventional screening methods. PMID:1998456

  14. MRI Evaluation of Soft Tissue Masses in the Hand and Wrist

    Directory of Open Access Journals (Sweden)

    Ali Radmehr

    2010-05-01

    Full Text Available MRI has a significant role in the diagnosis and as-sessment of soft tissue masses in the hand and wrist. Radiograph and CT scan remain useful in some cases. However, the potential detection rate and high soft tissue contrast resolution permit a valuable and more significant role for MRI in the evaluation and in certain cases tissue characterization of soft tissue masses in the hand and wrist. "nIn this session we would like to discuss MRI features and findings of the common soft tissue tumors in the hand and wrist.

  15. Ultrasound-Guided Interventional Procedures of the Wrist and Hand: Anatomy, Indications, and Techniques.

    Science.gov (United States)

    Colio, Sean W; Smith, Jay; Pourcho, Adam M

    2016-08-01

    Acute and chronic wrist and hand conditions are commonly seen by neuromuscular and musculoskeletal specialists. High-frequency diagnostic ultrasonography (US) has facilitated advances in the diagnosis and interventional management of wrist and hand disorders. US provides excellent soft tissue resolution, accessibility, portability, lack of ionizing radiation, and the ability to dynamically assess disorders and precisely guide interventional procedures. This article review the relevant anatomy, indications, and interventional techniques for common disorders of the wrist and hand, including radiocarpal joint arthritis, scaphotrapeziotrapezoidal joint arthritis, trapeziometacarpal joint arthritis, phalangeal joint arthritis, first dorsal compartment tenosynovitis, ganglion cysts, and stenosing tenosynovitis. PMID:27468668

  16. Post-traumatic Median Nerve Neuroma in Wrist. A Case Report and brief review of Literature

    OpenAIRE

    Ahmet Aslan; Mehmet Nuri Konya; Serdar Sargın

    2013-01-01

    Introduction: Distal median nerve masses may be developed post-traumatic or non-traumatic. In this paper, we aim to present a 52 year old female case with a postraumatic neuroma of the median nerve in the left wrist. Case Report: A 52-year-old female patient had accidental incised wound over her left wrist which was primarily sutured. She presented 6 months later with unrelieved pain and growing swelling at the wrist. USG showed solid mass of size 2×3 cms. Intraoperatively the mass was see...

  17. The state of art of MRI research on the wrist in patients with early rheumatoid arthritis

    International Nuclear Information System (INIS)

    Early diagnosis and treatment are essential for improving the outcome of rheumatoid arthritis (RA). New MRI and new scoring system, making precise and quantitative diagnosis and evaluation of RA, can be complementary to laboratory test. Wrist, metacarpophalangeal joint, carpometacarpal joint and interphalangeal joint are most often affected in RA. Early MRI features of RA include synovitis, bone marrow edema. erosions and cartilage loss. MRI can detect early signs of RA in wrist with high sensitivity and accuracy, and can easily and quantitatively monitor lesion response to the treatments. In this review, we summarized values of the wrist MRI in early diagnosis, quantitative analysis and prognosis of RA. (authors)

  18. A clinical decision rule for the use of plain radiography in children after acute wrist injury: development and external validation of the Amsterdam Pediatric Wrist Rules

    International Nuclear Information System (INIS)

    In most hospitals, children with acute wrist trauma are routinely referred for radiography. To develop and validate a clinical decision rule to decide whether radiography in children with wrist trauma is required. We prospectively developed and validated a clinical decision rule in two study populations. All children who presented in the emergency department of four hospitals with pain following wrist trauma were included and evaluated for 18 clinical variables. The outcome was a wrist fracture diagnosed by plain radiography. Included in the study were 787 children. The prediction model consisted of six variables: age, swelling of the distal radius, visible deformation, distal radius tender to palpation, anatomical snuffbox tender to palpation, and painful or abnormal supination. The model showed an area under the receiver operator characteristics curve of 0.79 (95% CI: 0.76-0.83). The sensitivity and specificity were 95.9% and 37.3%, respectively. The use of this model would have resulted in a 22% absolute reduction of radiographic examinations. In a validation study, 7/170 fractures (4.1%, 95% CI: 1.7-8.3%) would have been missed using the decision model. The decision model may be a valuable tool to decide whether radiography in children after wrist trauma is required. (orig.)

  19. A clinical decision rule for the use of plain radiography in children after acute wrist injury: development and external validation of the Amsterdam Pediatric Wrist Rules

    Energy Technology Data Exchange (ETDEWEB)

    Slaar, Annelie; Maas, Mario; Rijn, Rick R. van [University of Amsterdam, Department of Radiology, Academic Medical Centre, Meibergdreef 9, 1105, AZ, Amsterdam (Netherlands); Walenkamp, Monique M.J.; Bentohami, Abdelali; Goslings, J.C. [University of Amsterdam, Trauma Unit, Department of Surgery, Academic Medical Centre, Amsterdam (Netherlands); Steyerberg, Ewout W. [Erasmus MC - University Medical Centre, Department of Public Health, Rotterdam (Netherlands); Jager, L.C. [University of Amsterdam, Emergency Department, Academic Medical Centre, Amsterdam (Netherlands); Sosef, Nico L. [Spaarne Hospital, Department of Surgery, Hoofddorp (Netherlands); Velde, Romuald van [Tergooi Hospitals, Department of Surgery, Hilversum (Netherlands); Ultee, Jan M. [Sint Lucas Andreas Hospital, Department of Surgery, Amsterdam (Netherlands); Schep, Niels W.L. [University of Amsterdam, Trauma Unit, Department of Surgery, Academic Medical Centre, Amsterdam (Netherlands); Maasstadziekenhuis Rotterdam, Department of Surgery, Rotterdam (Netherlands)

    2016-01-15

    In most hospitals, children with acute wrist trauma are routinely referred for radiography. To develop and validate a clinical decision rule to decide whether radiography in children with wrist trauma is required. We prospectively developed and validated a clinical decision rule in two study populations. All children who presented in the emergency department of four hospitals with pain following wrist trauma were included and evaluated for 18 clinical variables. The outcome was a wrist fracture diagnosed by plain radiography. Included in the study were 787 children. The prediction model consisted of six variables: age, swelling of the distal radius, visible deformation, distal radius tender to palpation, anatomical snuffbox tender to palpation, and painful or abnormal supination. The model showed an area under the receiver operator characteristics curve of 0.79 (95% CI: 0.76-0.83). The sensitivity and specificity were 95.9% and 37.3%, respectively. The use of this model would have resulted in a 22% absolute reduction of radiographic examinations. In a validation study, 7/170 fractures (4.1%, 95% CI: 1.7-8.3%) would have been missed using the decision model. The decision model may be a valuable tool to decide whether radiography in children after wrist trauma is required. (orig.)

  20. Abdominal wall hernia and pregnancy

    DEFF Research Database (Denmark)

    Jensen, K K; Henriksen, N A; Jorgensen, L N

    2015-01-01

    PURPOSE: There is no consensus as to the treatment strategy for abdominal wall hernias in fertile women. This study was undertaken to review the current literature on treatment of abdominal wall hernias in fertile women before or during pregnancy. METHODS: A literature search was undertaken in Pub......Med and Embase in combination with a cross-reference search of eligible papers. RESULTS: We included 31 papers of which 23 were case reports. In fertile women undergoing sutured or mesh repair, pain was described in a few patients during the last trimester of a subsequent pregnancy. Emergency surgery...... of incarcerated hernias in pregnant women, as well as combined hernia repair and cesarean section appears as safe procedures. No major complications were reported following hernia repair before or during pregnancy. The combined procedure of elective cesarean section and abdominal wall hernia repair was reported...

  1. Abdominal actinomycosis mimicking acute appendicitis.

    Science.gov (United States)

    Conrad, Robert Joseph; Riela, Steven; Patel, Ravi; Misra, Subhasis

    2015-01-01

    A 52-year-old Hispanic woman presented to the emergency department, reporting worsening sharp lower right quadrant abdominal pain for 3 days. CT of the abdomen and pelvis showed evidence of inflammation in the peritoneal soft tissues adjacent to an enlarged and thick-walled appendix, an appendicolith, no abscess formation and a slightly thickened caecum consistent with acute appendicitis. During laparoscopic appendectomy, the caecum was noted to be firm, raising suspicion of malignancy. Surgical oncology team was consulted and open laparotomy with right hemicolectomy was performed. Pathology reported that the ileocaecal mass was not a malignancy but was, rather, actinomycosis. The patient was discharged after 10 days of intravenous antibiotics in the hospital, with the diagnosis of abdominal actinomycosis. Although the original clinical and radiological findings in this case were highly suggestive of acute appendicitis, abdominal actinomycosis should be in the differential for right lower quadrant pain as it may be treated non-operatively.

  2. Contemporary imaging in abdominal emergencies

    Energy Technology Data Exchange (ETDEWEB)

    Sivit, Carlos J. [Rainbow Babies and Children' s Hospital, Case Western Reserve School of Medicine, Department of Radiology, Cleveland, OH (United States)

    2008-11-15

    Imaging is often a fundamental part in the evaluation of an injured or ill child. A variety of imaging modalities (radiography, angiography/fluoroscopy, sonography, CT, magnetic resonance imaging and scintigraphy) are among the options. CT is worth focused attention because of its usefulness in a variety of emergency department settings, its increasing use, and its potential radiation risks. CT plays an important role in the evaluation of traumatic and nontraumatic abdominal emergencies in children. Therefore, the goal of this paper is to review current imaging approaches and controversies in the evaluation of common acute abdominal emergencies. Through discussion of various modalities, especially CT in evaluation of abdominal pain and trauma, the relative advantages and disadvantages including radiation risk will be reviewed. (orig.)

  3. The influence of the gait-related arm swing on elevation gain measured by sport watches

    Directory of Open Access Journals (Sweden)

    Ammann Rahel

    2016-06-01

    Full Text Available The elevation gain is an important contributor to the total workload in endurance sports. The purpose of this study was to evaluate the influence of the arm swing on elevation gain in three sport watches (Garmin® Forerunner 910XT, Polar® RS800CX and Suunto® Ambit2 on a flat 400 m outdoor track. Altogether, a total of 120 repetitions of 1,200 m were performed at self-selected speeds corresponding to strolling, walking, jogging and running. During the assessment two devices of each sport watch, one secured on the hip and one on the wrist, were worn by the participants. A small but significant (effect size = .39; p < .001 influence of the arm swing on elevation was revealed in all sport watches. Elevation indication errors recorded on the wrist were significantly larger than the ones recorded on the hip (4.0-7.4 vs. 1.2-5.7 m per 1,200 m; p < .05. Furthermore, when wearing the devices on the wrist, errors in elevation indication increased when gait speed increased. Users should be aware that wearing the devices on the hip can significantly decrease measurement errors. This might be especially relevant for activities with high dynamics, such as jogging and running.

  4. The arms race control

    International Nuclear Information System (INIS)

    Written in 1961, this paper presents the content of a book entitled 'The arms race control' where the author outlined the difference between disarmament and arms control, described the economic and moral role of arms race, the importance of force balance for international security. He wandered whether arms control could ensure this balance and whether nuclear balance meant force balance. Force balance then appears to be a precarious and unsteady component of international security. He commented the challenges of disarmament, recalled some arguments for a nuclear disarmament. Then he discussed what would be an arms control with or without disarmament (either nuclear or conventional)

  5. Secondary abdominal appendicular ectopic pregnancy.

    Science.gov (United States)

    Nama, Vivek; Gyampoh, Bright; Karoshi, Mahantesh; McRae, Reynold; Opemuyi, Isaac

    2007-01-01

    Although the case fatality rate for ectopic pregnancies has decreased to 0.08% in industrialized countries, it still represents 3.8% of maternal mortality in the United States alone. In developing countries, the case fatality rate varies from 3% to 27%. Laparoscopic management of tubal pregnancies is now the standard form of treatment where this technology is available. Abdominal pregnancies are rare, and secondary implantation of tubal ectopic pregnancies is the most common cause of abdominal gestations. We present an interesting case of secondary implantation of a tubal ectopic pregnancy to highlight the appendix as a possible secondary implantation site after a tubal ectopic pregnancy. PMID:17630175

  6. CT appearances of abdominal tuberculosis

    International Nuclear Information System (INIS)

    The purpose of this article is to review and illustrate the spectrum of computed tomography (CT) appearances of abdominal tuberculosis. Tuberculosis can affect any organ or tissue in the abdomen, and can be mistaken for other inflammatory or neoplastic conditions. The most common sites of tuberculosis in the abdomen include lymph nodes, genitourinary tract, peritoneal cavity and gastrointestinal tract. The liver, spleen, biliary tract, pancreas and adrenals are rarely affected, but are more likely in HIV-seropositive patients and in miliary tuberculosis. This article should alert the radiologist to consider abdominal tuberculosis in the correct clinical setting to ensure timely diagnosis and enable appropriate treatment.

  7. Blunt abdominal trauma in sports.

    Science.gov (United States)

    Rifat, Sami F; Gilvydis, Rimas P

    2003-04-01

    Abdominal injuries are rare in sports, but when they do occur it is important that the physician recognize the warning signs of potentially life-threatening injury to the liver, spleen, or hollow abdominal viscera. Though the sports medicine physician may not always provide definitive treatment of many of these conditions, he or she should be familiar with the preferred diagnostic modalities and latest treatment options. This information is not only essential to appropriately participate in treatment decisions, but is also important in order to make return-to-play determinations.

  8. CT appearances of abdominal tuberculosis

    Energy Technology Data Exchange (ETDEWEB)

    Lee, W.-K., E-mail: leewk33@hotmail.com [Department of Medical Imaging, St Vincent' s Hospital, University of Melbourne, Fitzroy, Victoria (Australia); Van Tonder, F.; Tartaglia, C.J.; Dagia, C. [Department of Medical Imaging, St Vincent' s Hospital, University of Melbourne, Fitzroy, Victoria (Australia); Cazzato, R.L. [Department of Radiology, Universita Campus Bio-Medico di Roma, Rome (Italy); Duddalwar, V.A. [Department of Radiology, Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California (United States); Chang, S.D. [Department of Medical Imaging, Vancouver General Hospital, University of British Columbia, British Columbia (Canada)

    2012-06-15

    The purpose of this article is to review and illustrate the spectrum of computed tomography (CT) appearances of abdominal tuberculosis. Tuberculosis can affect any organ or tissue in the abdomen, and can be mistaken for other inflammatory or neoplastic conditions. The most common sites of tuberculosis in the abdomen include lymph nodes, genitourinary tract, peritoneal cavity and gastrointestinal tract. The liver, spleen, biliary tract, pancreas and adrenals are rarely affected, but are more likely in HIV-seropositive patients and in miliary tuberculosis. This article should alert the radiologist to consider abdominal tuberculosis in the correct clinical setting to ensure timely diagnosis and enable appropriate treatment.

  9. Children's (Pediatric) Abdominal Ultrasound Imaging

    Medline Plus

    Full Text Available ... in the abdomen, arms, legs, neck and/or brain (in infants and children) or within various body ... children. It is also valuable for evaluating the brain, spinal cord and hip joints in newborns and ...

  10. Children's (Pediatric) Abdominal Ultrasound Imaging

    Medline Plus

    Full Text Available ... allows the physician to see and evaluate blood flow through arteries and veins in the abdomen, arms, ... physician to see and evaluate: blockages to blood flow (such as clots) narrowing of vessels tumors and ...

  11. Interstitial deletion of the short arm of chromosome 3. Fetal pathology and exclusion of the gene for beta-galactosidase-1 (GLB-1) from 3(p11----p14.2)

    DEFF Research Database (Denmark)

    Hertz, Jens Michael; Coerdt, W; Hahnemann, N;

    1988-01-01

    A de novo interstitial deletion of the short arm of chromosome 3 was prenatally diagnosed in a male fetus, karyotype 46,XY,del(3)(pter----p14.2::p11----qter). The fetus had craniofacial dysmorphisms, a single transverse palmar crease, ulnar deviation in the wrists, cardiovascular anomalies, a...

  12. Plain abdominal film and abdominal ultrasound in intestine occlusion

    International Nuclear Information System (INIS)

    Plain film of the abdomen is widely used in the diagnostic evaluation of intestinal occlusion. Even though this technique can yield a panoramic and high-resolution view of gas-filled intestinal loops, several factors, such as type and duration of occlusion, neurovascular status of the intestine and general patient condition, may reduce the diagnostic specificy of the plain film relative to the organic or functional nature of the occlusion. From 1987 to 1989, fifty-four patients with intestinal occlusion were studied combining plain abdominal film with abdominal ultrasound (US). This was done in order to evaluate whether the additional information obtained from US could be of value in better determining the nature of the ileus. US evaluation was guided by the information already obtained from plain film which better demonstrates gas-filled loops. The results show that in all 27 cases of dynamic ileus (intestinal ischemia, acute appendicitis, acute cholecistis, acute pancreatitis or blunt abdominal trauma) US demonstrates: intestinal loops slightly increased in caliber, with liquid content, or loops containing rare hyperechoic particles, intestinal wall thickening and no peristalsis. In 27 cases of acute, chronic or complicated mechanical ileus (adhesions, internal hernia, intestinal neoplasm, peritoneal seedings) US shows: 1) in acute occlusion: hyperperistaltic intestinal loops containing inhomogeneous liquid; 2) in chronic occlusion: liquid content with a solid echigenic component; 3) in complicated occlusion: liquid stasis, frequent increase in wall thickness, moderate peritoneal effusion and inefficient peristalsis. In conclusion, based on the obtained data, the authors feel that the combination of plain abdominal film and abdominal US can be useful in the work-up of patient with intestinal occlusion. The information provided by US allows a better definition of the nature of the ileus

  13. Biomechanical evaluation of wrist-driven flexor hinge orthosis in persons with spinal cord injury

    Directory of Open Access Journals (Sweden)

    Yeoun-Seung Kang, MD, PhD, CPO

    2013-11-01

    Full Text Available The wrist-driven flexor hinge orthosis (WDFHO is a device used to restore hand function in persons with tetraplegic spinal cord injury by furnishing three-point prehension. We assessed the effectiveness and biomechanical properties of the WDFHO in 24 persons with cervical 6 or 7 tetraplegia who have severely impaired hand function. This study introduces a mechanical operating model to assess the efficiency of the WDFHO. Experimental results showed that pinch force increased significantly (p < 0.001 after using the WDFHO and was found to positively correlate with the strength of wrist extensor muscles (r = 0.41, p < 0.001. However, when the strength of the wrist extensors acting on the WDFHO was greater, the reciprocal wrist and finger motion that generates three-point prehension was less effective (r = 0.79, p < 0.001. Reliable and valid biomechanical evaluation of the WDFHO could improve our understanding of its biomechanics.

  14. Clinical Study on the Wrist-Ankle Acupuncture Treatment for 30 Cases of Diabetic Peripheral Neuritis

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    Objective: To study the mechanisms of wrist-ankle acupuncture for prevention and treatment of diabetic peripheral neuritis. Methods: Ninety cases of diabetic peripheral neuritis were randomly divided into 3groups, and treated respectively with wrist-ankle acupuncture, body-acupuncture, and the western routine medical treatment, with 30 cases in each of the groups; and therapeutic effects and laboratory results compared. Results: It is proved that the therapeutic effects of the wrist-ankle acupuncture group and body acupuncture group were significantly superior to those of the control group, with no significant differences between the former two groups. Conclusion: Wrist-ankle acupuncture has the actions of improving the metabolisms of blood sugar and blood-lipid, lowering down blood viscosity, and restoring the functions of peripheral nerve cells, thus giving definite therapeutic effects for diabetic peripheral neuritis.

  15. MRI features in de Quervain`s tenosynovitis of the wrist

    Energy Technology Data Exchange (ETDEWEB)

    Glajchen, N. [Mount Sinai Hospital, New York, NY (United States). Dept. of Radiology; Schweitzer, M. [Thomas Jefferson Univ., Philadelphia, PA (United States). Dept. of Radiology

    1996-01-01

    De Quervain`s stenosing tenosynovitis of the first dorsal extensor component is traditionally diagnosed clinically but may be encountered when performing MRI of the wrist. A retrospective review of wrist MR images was performed in cases where the diagnosis of de Quervain`s synovitis was suggested (n=5). Imaging findings were correlated with clinical findings in four cases and with wrist arthroscopy in one case. Increased thickness of the extensor pollicus brevis and abductor pollicis longus tendons was the most reliable finding on MRI, being present in all cases. Peritendinous edema was also a reliable finding. Surrounding subcutaneous edema and increased intratendinous signal were less reliable findings in confirmed cases of de Quervain`s disease. De Quervain`s tenosynovitis may be encountered when performing MRI of the wrist. Increased tendon thickness and peritendinous edema are the most reliable imaging findings. (orig.)

  16. Constant angular velocity of the wrist during the lifting of a sphere.

    Science.gov (United States)

    Chappell, P H; Metcalf, C D; Burridge, J H; Yule, V T; Pickering, R M

    2010-05-01

    The primary objective of the experiments was to investigate the wrist motion of a person while they were carrying out a prehensile task from a clinical hand function test. A six-camera movement system was used to observe the wrist motion of 10 participants. A very light sphere and a heavy sphere were used in the experiments to study any mass effects. While seated at a table, a participant moved a sphere over a small obstacle using their dominant hand. The participants were observed to move their wrist at a constant angular velocity. This phenomenon has not been reported previously. Theoretically, the muscles of the wrist provide an impulse of force at the start of the rotation while the forearm maintains a constant vertical force on a sphere. Light-heavy mean differences for the velocities, absolute velocities, angles and times taken showed no significant differences (p = 0.05). PMID:20233128

  17. A three-dimensional quantitative analysis of carpal deformity in rheumatoid wrists.

    Science.gov (United States)

    Arimitsu, S; Murase, T; Hashimoto, J; Oka, K; Sugamoto, K; Yoshikawa, H; Moritomo, H

    2007-04-01

    We have measured the three-dimensional patterns of carpal deformity in 20 wrists in 20 rheumatoid patients in which the carpal bones were shifted ulnarwards on plain radiography. Three-dimensional bone models of the carpus and radius were created by computerised tomography with the wrist in the neutral position. The location of the centroids and rotational angle of each carpal bone relative to the radius were calculated and compared with those of ten normal wrists. In the radiocarpal joint, the proximal row was flexed and the centroids of all carpal bones translocated in an ulnar, proximal and volar direction with loss of congruity. In the midcarpal joint, the distal row was extended and congruity generally well preserved. These findings may facilitate more positive use of radiocarpal fusion alone for the deformed rheumatoid wrist.

  18. Congenital postural deformity of the wrist. A report of two cases.

    Science.gov (United States)

    Smith, M G

    1986-05-01

    Two girls with congenital postural deformity of the wrist associated with deformity of the feet are reported. Fetal position in utero is discussed as a likely cause, and treatment by simple manipulation is recommended.

  19. Wrist Ultrasonography vs. Electrophysiological Studies in the Diagnosis of Carpal Tunnel Syndrome

    Directory of Open Access Journals (Sweden)

    Amirhossein Hashemi Attar

    2009-01-01

    Full Text Available   "nIntroduction: The carpal tunnel syndrome (CTS is the most common entrapment neuropathy and is caused by compression of the median nerve in the carpal tunnel. It is characterized by pain or paresthesia in areas innervated by the median nerve. Electrophysiological studies are gold standard diagnostic tests for CTS. The objective of this study was to compare ultrasonography and electrophysiological studies in the diagnosis of CTS. "nMaterials and Methods: This cross sectional study was conducted on 100 wrists of 50 consecutive patients referred to 22-Bahman hospital (Mashhad with the clinical diagnosis of CTS from spring 2007 to summer 2008. These patients suspicious for CTS in at least one of their wrists (based on their complaints and neurological examination including Tinel’s test and Phallen test, were referred for electrophysiological studies including nerve conduction velocity and electromyography. All the patients underwent ultrasonography of both wrists within a week after electrophysiological studies. Ultrasonographies were performed by a radiologist using a high frequency (12 MHz linear probe (PHILIPS Envisor C. The cross sectional area of the median nerve was measured at the carpal tunnel. Measurements equal or more than 10 mm2 were considered as the CTS. Ultrasonographic findings and also clinical examination (Tinel’s test and Phalen’s test were compared with electrophysiological studies (as the gold standard diagnostic test for each wrist separately. "nResults: Of the 100 wrists (50 patients, 53 wrists were diagnosed as CTS based on the electrophysiological studies. Ninety one percent of the wrists with CTS were in female patients. The mean age was 52.1 years (23-75 years. There was no predisposing factor for most cases; however, 6% were affected by diabetes, 6% by hypertriglyceridemia, and 2% by hypothyroidism. The sensitivity, specificity and accuracy of clinical examination (Tinel’s test and Phalen’s test were 59%, 88

  20. Gouty wrist arthritis causing carpal tunnel syndrome--a case report.

    Science.gov (United States)

    Sikkandar, M F; Sapuan, J; Singh, R; Abdullah, S

    2012-06-01

    A 63 year old male with a history of gout and hypertension presented with carpal tunnel syndrome. He gave history of bilateral wrist pain associated with numbness over the median nerve distribution of the hand. Tinels sign and Phalens test were positive with no obvious thenar muscle wasting on examination. Tophaceous deposits in the flexor tendons and within the synovium of the wrist joint was seen during surgery and this established gout as the cause of median nerve entrapment in this patient.

  1. Biased wrist and finger coordination in Parkinsonian patients during performance of graphical tasks.

    Science.gov (United States)

    Dounskaia, Natalia; Van Gemmert, Arend W A; Leis, Berta C; Stelmach, George E

    2009-10-01

    Handwriting impairments in Parkinson's disease (PD) have been associated with micrographia, i.e. diminished letter size. However, dyscoordination of the wrist and fingers may also contribute to handwriting deterioration in PD. To investigate this hypothesis, right-handed PD patients and controls were tested in performance of three types of cyclic wrist and finger movements: drawing of two lines and a circle. The line drawing was performed with either simultaneous flexion and extension of the wrist and fingers (equivalent pattern resulting in a right-tilted line) or with wrist flexion/extension accompanied with finger extension/flexion (nonequivalent pattern resulting in a left-tilted line). Circle drawing required a specific phase difference between wrist and finger motions. Movements were performed with an inkless pen on a digitizer-tablet at two frequency levels. Consistent deformations of the circle into right-tilted ovals and lower variability in equivalent compared with nonequivalent lines revealed preference to produce right-tilted shapes. This preference became more apparent with increased movement speed and it was amplified in PD patients. Analysis revealed that the circle deformation emerged mainly due to reduction in relative phase, while wrist and finger amplitudes remained unchanged. The results suggest that PD causes deficit characterized by strong tendency to produce certain coordination patterns between wrist and finger motions. This deficit may significantly contribute to handwriting impairments in PD by reducing the dexterity in the production of the variety of shapes of the cursive letters. Furthermore, the deficiency revealed in wrist and finger coordination may represent a more general deficit affecting control of various multi-joint movements in PD. PMID:19410590

  2. Biased Wrist and Finger Coordination in Parkinsonian Patients during Performance of Graphical Tasks

    OpenAIRE

    Dounskaia, Natalia; Van Gemmert, Arend W.A.; Leis, Berta C; Stelmach, George E.

    2009-01-01

    Handwriting impairments in Parkinson’s disease (PD) have been associated with micrographia, i.e. diminished letter size. However, dyscoordination of the wrist and fingers may also contribute to handwriting deterioration in PD. To investigate this hypothesis, right-handed PD patients and controls were tested in performance of three types of cyclic wrist and finger movements: drawing of two lines and a circle. The line drawing was performed with either simultaneous flexion and extension of the ...

  3. Children's (Pediatric) Abdominal Ultrasound Imaging

    Medline Plus

    Full Text Available ... gallbladder spleen pancreas intestines kidneys bladder testicles ovaries uterus Abdominal ultrasound images can be used to help ... that is being examined to the transducer (the device used to examine the patient), as well ... is not a medical facility. Please contact your physician with specific medical ...

  4. Economic costs of abdominal obesity

    DEFF Research Database (Denmark)

    Højgaard, Betina; Olsen, Kim Rose; Søgaard, Jes;

    2008-01-01

    BACKGROUND: To examine the relationship between waist circumference and future health care costs across a broad range of waist circumference values based on individual level data. METHOD: A prospective cohort of 31,840 subjects aged 50-64 years at baseline had health status, lifestyle and socio-e...... be a potential for significant resource savings through prevention of abdominal obesity....

  5. Clinical management of abdominal trauma

    Institute of Scientific and Technical Information of China (English)

    FANG Guo-en; LUO Tian-hang; DU Cheng-hui; BI Jian-wei; XUE Xu-chao; WEI Guo; WENG Zhao-zhang; MA Li-ye; HUA Ji-de

    2008-01-01

    Objective: To improve the prognosis of patients with abdominal trauma. Methods: Between January 1993 and December 2005, 415 patients were enrolled in this research. The patients consisted of 347 males and 68 females with mean age of 36 years ranging from 3-82 years. All abdominal traumas consisted of closed traumas 360 cases, 86.7% and open traumas 55 cases, 13.3%. Results: Atotal of 407 cases 98.1% were fully recovered from trauma and the other 8 cases 1.9% died of multiple injuries. The mean injury severity score ISS of all patients was 22 while the mean ISS of the patients who died in hospital was 42. Postoperative complications were seen in 9 patients such as infection of incisional wounds 6 cases, pancreatic fistula 2 cases and intestinal fistula 1 case. All these postoperative complications were cured by the conservative treatment. Conclusion: Careful case history inquisition and physical examination are the basic methods to diagnose abdomi- nal trauma. Focused abdominal ultrasonography is always the initial imaging examination because it is non-invasive and can be performed repeatedly with high accuracy. The doctors should consider the severity of local injuries and the general status of patients during the assessment of abdominal trauma. The principle of treatment is to save lives at first, then to cure the injuries. Unnecessary laparotomy should be avoided to reduce additional surgical trauma.

  6. A structurally decoupled mechanism for measuring wrist torque in three degrees of freedom

    Science.gov (United States)

    Pan, Lizhi; Yang, Zhen; Zhang, Dingguo

    2015-10-01

    The wrist joint is a critical part of the human body for movement. Measuring the torque of the wrist with three degrees of freedom (DOFs) is important in some fields, including rehabilitation, biomechanics, ergonomics, and human-machine interfacing. However, the particular structure of the wrist joint makes it difficult to measure the torque in all three directions simultaneously. This work develops a structurally decoupled instrument for measuring and improving the measurement accuracy of 3-DOF wrist torque during isometric contraction. Three single-axis torque sensors were embedded in a customized mechanical structure. The dimensions and components of the instrument were designed based on requirement of manufacturability. A prototype of the instrument was machined, assembled, integrated, and tested. The results show that the structurally decoupled mechanism is feasible for acquiring wrist torque data in three directions either independently or simultaneously. As a case study, we use the device to measure wrist torques concurrently with electromyography signal acquisition in preparation for simultaneous and proportional myoelectric control of prostheses.

  7. Wrist joint moments of walker-assisted gait:a study of biomechanics and instrumentation

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    While walkers are commonly prescribed to improve patient stability and ambulatory ability,quantitativestudy of the biomechanical and functional requirements for effective walker use is limited.To investigate the changesin wrist joint moments that occur with the use of a standard walker,a strain gauge-based walker instrumentation system was developed for the measurement of wrist joint moments.This walker dynamometer was integrated with an upper extremity biomechanical model.Preliminary system data were collected for twelve healthy,right-handed young adultsfollowing informed consent.Bilateral upper extremity kinematic data were acquired with a six-camera motion analysis system.Internal joint moments at the wrist were determined in the three clinical planes using the inverse dynamics method.Results showed that during a walker-assisted gait there were several typical demands of wrist abductor,adductor,flexor and external rotator.An interesting " bare phase " of wrist joint moments was also found in phaseangle[-30°,30°] of gait cycle.Complete description of wrist joint moments during walker-assisted gait may provide insight into walker use parameters and rehabilitative strategies.

  8. Clinical and electrophysiological evaluation of neutral wrist nocturnal splinting in patients with carpal tunnel syndrome

    Science.gov (United States)

    Weng, Chao; Dong, Hongjuan; Chu, Hong; Lu, Zuneng

    2016-01-01

    [Purpose] To prospectively assess the effectiveness of neutral wrist nocturnal splinting in patients with carpal tunnel syndrome (CTS) by using clinical scores and nerve conduction studies (NCS). [Subjects and Methods] Forty-one patients enrolled in the study were clinically evaluated by a symptom severity scale (SSS) and functional status scale (FSS), and were electrophysiologically evaluated by conventional NCS; distal motor latency (DML), sensory conduction velocity (SCV), and difference in sensory latency between the median and ulnar nerves (ΔDSL) were measured. Subjects were treated with wrist splinting. Patients who showed no improvement in symptoms were treated with other conservative treatments, the remaining patients continued to wear splints. SSS, FSS, and NCS were evaluated after splinting as well. [Results] The follow-up was completed in 20 patients (31 wrists) with splinting. SSS and FSS decreased, the DML shortened and ΔDSL decreased significantly after splinting for 3.03 ± 1.16 months. There were significant correlations between SSS and DML, SCV of wrist digit 2, and SCV of wrist digit 4. No correlations were found between SSS and ΔDSL, and FSS and the parameters of NCS. [Conclusion] Neutral wrist nocturnal splinting is effective in at least short term for CTS patients. There is a weak correlation between clinical scores and NCS, which suggests that both approaches should be used to effectively assess the therapeutic effect of CTS treatment. PMID:27630413

  9. WRIST FORCE SENSOR'S DYNAMIC PERFORMANCE CALIBRATION BASED ON NEGATIVE STEP RESPONSE

    Institute of Scientific and Technical Information of China (English)

    ZHENG Hongmei

    2008-01-01

    Negative step response experimental method is used in wrist force sensor's dynamic performance calibration. The exciting manner of negative step response method is the same as wrist force sensor's load in working. This experimental method needn't special experiment equipments. Experiment's dynamic repeatability is good. So wrist force sensor's dynamic performance is suitable to be calibrated by negative step response method. A new correlation wavelet transfer method is studied. By wavelet transfer method, the signal is decomposed into two dimensional spaces of time-frequency. So the problem of negative step exciting energy concentrating in the low frequency band is solved. Correlation wavelet transfer doesn't require that wavelet primary function be orthogonal and needn't wavelet reconstruction. So analyzing efficiency is high. An experimental bench is designed and manufactured to load the wrist force sensor orthogonal excitation force/moment. A piezoelectric force sensor is used to setup soft trigger and calculate the value of negative step excitation. A wrist force sensor is calibrated. The pulse response function is calculated after negative step excitation and step response have been transformed to positive step excitation and step response. The pulse response function is transferred to frequency response function. The wrist force sensor's dynamic characteristics are identified by the frequency response function.

  10. Preoperative steroid in abdominal wall reconstruction

    DEFF Research Database (Denmark)

    Jensen, Kristian Kiim; Brøndum, Tina Lee; Belhage, Bo;

    2016-01-01

    INTRODUCTION: Preoperative administration of high-dose glucocorticoid leads to improved recovery and decreased length of stay after abdominal surgery. Even so, studies on administration of glucocorticoids for patients undergoing abdominal wall reconstruction (AWR) for giant ventral hernia repair ...

  11. A wearable wireless ultrasonic sensor network for human arm motion tracking.

    Science.gov (United States)

    Qi, Yongbin; Soh, Cheong Boon; Gunawan, Erry; Low, Kay-Soon

    2014-01-01

    This paper introduces a novel method for arm flexion/extension angles measurement using wireless ultrasonic sensor network. The approach uses unscented Kalman filter and D-H kinematical chain model to retrieve the joint angles. This method was experimentally validated by calculating the 2-dimensional wrist displacements from one mobile, placed on the point of subject's wrist, and four anchors. The performance of the proposed ultrasonic motion analysis system was bench-marked by commercial camera motion capture system. The experimental results demonstrate that a favorable performance of the proposed system in the estimation of upper limb motion. The proposed system is wireless, easy to wear, to use and much cheaper than current camera system. Thus, it has the potential to become a new and useful tool for routine clinical assessment of human motion. PMID:25571354

  12. Mechanical Design, Control Choices and first Return of Use of a Prosthetic Arm

    CERN Document Server

    Thomann, Guillaume

    2007-01-01

    In the world of upper limb prostheses, few companies dominate the majority of the market. They propose different kinds of hand, wrist and elbow prostheses but their control is often difficult to understand by the patients. We have decided to develop new myoelectric prosthetic arm (elbow, wrist and hand) by axing our development on the use of new technologies and facility of use for the patient. In this paper, we are explaining in details the different kinds of prostheses currently proposed to the amputees, their advantages and their drawbacks, the descriptions of the patients' needs and the possible improvements of the product. We will develop the designing choices of our prosthesis and the movements it can realize. Then we will explain the simplified control of the product by the patient and its first reactions. Finally, we will conclude by the news ideas and the next researches to concretize.

  13. ADULT ABDOMINAL WALL HERNIA IN IBADAN

    OpenAIRE

    Ayandipo, O.O; Afuwape, O.O.; Irabor, D. O.; Abdurrazzaaq, A.I.

    2015-01-01

    Background: Abdominal wall hernias are very common diseases encountered in surgical practice. Groin hernia is the commonest type of abdominal wall hernias. There are several methods of hernia repair but tension-free repair (usually with mesh) offers the least recurrent rate. Aim: To describe the clinical profile of anterior abdominal wall hernias and our experience in the surgical management of identified hernias Method: The project was a retrospective study of all patients with abdominal wal...

  14. Motion-preserving wrist reconstruction using a microsurgical medial femur condylus bone graft and radio-scapho-lunate (RSL limited fusion after osteomyelitis following open distal radius fracture

    Directory of Open Access Journals (Sweden)

    Steinmann, Claudia

    2015-06-01

    Full Text Available This case presents the microsurgical management in the rare situation after sequestering osteomyelitis of the distal radius to achieve both bony stability and partially preserved wrist motion. A 38-year-old patient underwent after sequestrectomy microsurgical reconstruction using a medial femoral condyle as a prerequisite for simultaneous motion-preserving radio-scapho-lunate (RSL fusion. As a result, 11 months postoperatively, a good functional result was achieved with range of motion of 60° in extension/flexion and 40° in ulnar/radial deviation and grip strength of 12 kg correspondeding to 33% of the dominant contralateral side. Upper extremity usability as measured by Disability of Arm Shoulder and Hand (DASH questionnaire improved from preoperative 24 to after the reconstruction and enabled the patient to resume his work without pain.

  15. Abdominal shotgun trauma: A case report

    OpenAIRE

    Toutouzas, Konstantinos G; Larentzakis, Andreas; Drimousis, Panagiotis; Riga, Maria; Theodorou, Dimitrios; Katsaragakis, Stylianos

    2008-01-01

    Introduction One of the most lethal mechanisms of injury is shotgun wound and particularly the abdominal one. Case presentation We report a case of a 45 years old male suffering abdominal shotgun trauma, who survived his injuries. Conclusion The management of the abdominal shotgun wounds is mainly dependent on clinical examination and clinical judgment, while requires advanced surgical skills.

  16. Macrobend optical sensing for pose measurement in soft robot arms

    Science.gov (United States)

    Sareh, Sina; Noh, Yohan; Li, Min; Ranzani, Tommaso; Liu, Hongbin; Althoefer, Kaspar

    2015-12-01

    This paper introduces a pose-sensing system for soft robot arms integrating a set of macrobend stretch sensors. The macrobend sensory design in this study consists of optical fibres and is based on the notion that bending an optical fibre modulates the intensity of the light transmitted through the fibre. This sensing method is capable of measuring bending, elongation and compression in soft continuum robots and is also applicable to wearable sensing technologies, e.g. pose sensing in the wrist joint of a human hand. In our arrangement, applied to a cylindrical soft robot arm, the optical fibres for macrobend sensing originate from the base, extend to the tip of the arm, and then loop back to the base. The connectors that link the fibres to the necessary opto-electronics are all placed at the base of the arm, resulting in a simplified overall design. The ability of this custom macrobend stretch sensor to flexibly adapt its configuration allows preserving the inherent softness and compliance of the robot which it is installed on. The macrobend sensing system is immune to electrical noise and magnetic fields, is safe (because no electricity is needed at the sensing site), and is suitable for modular implementation in multi-link soft continuum robotic arms. The measurable light outputs of the proposed stretch sensor vary due to bend-induced light attenuation (macrobend loss), which is a function of the fibre bend radius as well as the number of repeated turns. The experimental study conducted as part of this research revealed that the chosen bend radius has a far greater impact on the measured light intensity values than the number of turns (if greater than five). Taking into account that the bend radius is the only significantly influencing design parameter, the macrobend stretch sensors were developed to create a practical solution to the pose sensing in soft continuum robot arms. Henceforward, the proposed sensing design was benchmarked against an electromagnetic

  17. Solar powered wrist worn acquisition system for continuous photoplethysmogram monitoring.

    Science.gov (United States)

    Dieffenderfer, James P; Beppler, Eric; Novak, Tristan; Whitmire, Eric; Jayakumar, Rochana; Randall, Clive; Qu, Weiguo; Rajagopalan, Ramakrishnan; Bozkurt, Alper

    2014-01-01

    We present a solar-powered, wireless, wrist-worn platform for continuous monitoring of physiological and environmental parameters during the activities of daily life. In this study, we demonstrate the capability to produce photoplethysmogram (PPG) signals using this platform. To adhere to a low power budget for solar-powering, a 574 nm green light source is used where the PPG from the radial artery would be obtained with minimal signal conditioning. The system incorporates two monocrystalline solar cells to charge the onboard 20 mAh lithium polymer battery. Bluetooth Low Energy (BLE) is used to tether the device to a smartphone that makes the phone an access point to a dedicated server for long term continuous storage of data. Two power management schemes have been proposed depending on the availability of solar energy. In low light situations, if the battery is low, the device obtains a 5-second PPG waveform every minute to consume an average power of 0.57 mW. In scenarios where the battery is at a sustainable voltage, the device is set to enter its normal 30 Hz acquisition mode, consuming around 13.7 mW. We also present our efforts towards improving the charge storage capacity of our on-board super-capacitor.

  18. Autologous Blood Injection and Wrist Immobilisation for Chronic Lateral Epicondylitis

    Directory of Open Access Journals (Sweden)

    Nicola Massy-Westropp

    2012-01-01

    Full Text Available Purpose. This study explored the effect of autologous blood injection (with ultrasound guidance to the elbows of patients who had radiologically assessed degeneration of the origin of extensor carpi radialis brevis and failed cortisone injection/s to the lateral epicondylitis. Methods. This prospective longitudinal series involved preinjection assessment of pain, grip strength, and function, using the patient-rated tennis elbow evaluation. Patients were injected with blood from the contralateral limb and then wore a customised wrist support for five days, after which they commenced a stretching, strengthening, and massage programme with an occupational therapist. These patients were assessed after six months and then finally between 18 months and five years after injection, using the patient-rated tennis elbow evaluation. Results. Thirty-eight of 40 patients completed the study, showing significant improvement in pain; the worst pain decreased by two to five points out of a 10-point visual analogue for pain. Self-perceived function improved by 11–25 points out of 100. Women showed significant increase in grip, but men did not. Conclusions. Autologous blood injection improved pain and function in a worker’s compensation cohort of patients with chronic lateral epicondylitis, who had not had relief with cortisone injection.

  19. A Wrist-Worn Thermohaptic Device for Graceful Interruption

    Directory of Open Access Journals (Sweden)

    Shahram Jalaliniya

    2015-10-01

    Full Text Available Thermal haptics is a potential system output modality for wearable devices that promises to function at the periphery of human attention. When adequately combined with existing attention-governing mechanisms of the human mind, it could be used for interrupting the human agent at a time when the negative influence on the ongoing activity is minimal. In this article we present our self-mitigated interruption concept (essentially a symbiosis of artificial external stimuli tuned to existing human attention management mechanisms and perform a pilot study laying the ground for using a wrist-worn thermohaptic actuator for self-mitigating interruption. We then develope a prototype and perform an insightful pilot study. We frame our empirical thermohaptic experimental work in terms of Peripheral Interaction concepts and show how this new approach to Human-Computer Interaction relates to the Context-Aware-systems-inspired approach “Egocentric Interaction” aimed at supporting the design of envisioned Wearable Personal Assistants intended to, among other things, help human perception and cognition with the management of interruptions.

  20. Solar powered wrist worn acquisition system for continuous photoplethysmogram monitoring.

    Science.gov (United States)

    Dieffenderfer, James P; Beppler, Eric; Novak, Tristan; Whitmire, Eric; Jayakumar, Rochana; Randall, Clive; Qu, Weiguo; Rajagopalan, Ramakrishnan; Bozkurt, Alper

    2014-01-01

    We present a solar-powered, wireless, wrist-worn platform for continuous monitoring of physiological and environmental parameters during the activities of daily life. In this study, we demonstrate the capability to produce photoplethysmogram (PPG) signals using this platform. To adhere to a low power budget for solar-powering, a 574 nm green light source is used where the PPG from the radial artery would be obtained with minimal signal conditioning. The system incorporates two monocrystalline solar cells to charge the onboard 20 mAh lithium polymer battery. Bluetooth Low Energy (BLE) is used to tether the device to a smartphone that makes the phone an access point to a dedicated server for long term continuous storage of data. Two power management schemes have been proposed depending on the availability of solar energy. In low light situations, if the battery is low, the device obtains a 5-second PPG waveform every minute to consume an average power of 0.57 mW. In scenarios where the battery is at a sustainable voltage, the device is set to enter its normal 30 Hz acquisition mode, consuming around 13.7 mW. We also present our efforts towards improving the charge storage capacity of our on-board super-capacitor. PMID:25570657

  1. The effects of ball impact location and grip tightness on the arm, racquet and ball for one-handed tennis backhand groundstrokes.

    Science.gov (United States)

    King, Mark A; Kentel, Behzat B; Mitchell, Sean R

    2012-04-01

    A torque-driven, 3D computer simulation model of an arm-racquet system was used to investigate the effects of ball impact location and grip tightness on the arm, racquet and ball during one-handed tennis backhand groundstrokes. The stringbed was represented by nine point masses connected to each other and the racquet frame with elastic springs and three torsional spring-dampers between the hand and the racquet were used to represent grip tightness. For each perturbation of nine impact locations and grip tightness, simulations were run for a 50 ms period starting with ball-racquet impact. Simulations showed that during off-centre impacts below the longitudinal axis of the racquet, the wrist was forced to flex up to 16° more with up to six times more wrist extension torque when compared to a centre impact simulation. Perturbing grip tightness had no substantial effect on centre impact simulations. However, for off-centre impacts (below the longitudinal axis of the racquet) a tight grip condition resulted in a substantial decrease in racquet rotation within the hand (less than 2°) and an increase of 6° in wrist flexion angle when compared to the equivalent simulation with a normal grip. In addition there was approximately 20% more wrist extension torque when compared with equivalent off-centre impact simulation with a normal grip. Consequently off-centre impacts below the longitudinal axis of the racquet may be a substantial contributing factor for tennis elbow injuries with a tight grip aggravating the effect due to high eccentric wrist extension torques and forced wrist flexion. PMID:22325977

  2. Radiation Exposure of Abdominal Cone Beam Computed Tomography

    Energy Technology Data Exchange (ETDEWEB)

    Sailer, Anna M., E-mail: anni.sailer@mumc.nl [Maastricht University Medical Centre (MUMC), Department of Radiology (Netherlands); Schurink, Geert Willem H., E-mail: gwh.schurink@mumc.nl [Maastricht University Medical Centre, Department of Surgery (Netherlands); Wildberger, Joachim E., E-mail: j.wildberger@mumc.nl; Graaf, Rick de, E-mail: r.de.graaf@mumc.nl; Zwam, Willem H. van, E-mail: w.van.zwam@mumc.nl; Haan, Michiel W. de, E-mail: m.de.haan@mumc.nl; Kemerink, Gerrit J., E-mail: gerrit.kemerink@mumc.nl; Jeukens, Cécile R. L. P. N., E-mail: cecile.jeukens@mumc.nl [Maastricht University Medical Centre (MUMC), Department of Radiology (Netherlands)

    2015-02-15

    PurposeTo evaluate patients radiation exposure of abdominal C-arm cone beam computed tomography (CBCT).MethodsThis prospective study was approved by the institutional review board; written, informed consent was waived. Radiation exposure of abdominal CBCT was evaluated in 40 patients who underwent CBCT during endovascular interventions. Dose area product (DAP) of CBCT was documented and effective dose (ED) was estimated based on organ doses using dedicated Monte Carlo simulation software with consideration of X-ray field location and patients’ individual body weight and height. Weight-dependent ED per DAP conversion factors were calculated. CBCT radiation dose was compared to radiation dose of procedural fluoroscopy. CBCT dose-related risk for cancer was assessed.ResultsMean ED of abdominal CBCT was 4.3 mSv (95 % confidence interval [CI] 3.9; 4.8 mSv, range 1.1–7.4 mSv). ED was significantly higher in the upper than in the lower abdomen (p = 0.003) and increased with patients’ weight (r = 0.55, slope = 0.045 mSv/kg, p < 0.001). Radiation exposure of CBCT corresponded to the radiation exposure of on average 7.2 fluoroscopy minutes (95 % CI 5.5; 8.8 min) in the same region of interest. Lifetime risk of exposure related cancer death was 0.033 % or less depending on age and weight.ConclusionsMean ED of abdominal CBCT was 4.3 mSv depending on X-ray field location and body weight.

  3. Rotatory subluxation of the scaphoid after excision of dorsal carpal ganglion and wrist manipulation--a case report.

    Science.gov (United States)

    Crawford, G P; Taleisnik, J

    1983-11-01

    Surgical excision of a ganglion on the dorsum of the wrist is usually a benign procedure. The most frequent complications are transient postoperative stiffness and recurrence of the ganglion. This paper reports the development of a rotatory subluxation of the scaphoid after the manipulation of the wrist of a patient who had developed postoperative stiffness after the surgical excision of a dorsal wrist ganglion. This unusual complication was successfully treated by closed pinning under radiographic control followed by immobilization in palmar flexion. Manipulation of the wrist for the management of postoperative stiffness is rarely, if ever, indicated. Limitation of motion of a wrist without underlying structural changes is best managed by gentle, gradual splinting, both static and dynamic. It is suggested that preoperative x-rays should be obtained as part of the routine workup for a dorsal wrist ganglion.

  4. How does arm positioning of polytraumatized patients in the initial computed tomography (CT) affect image quality and diagnostic accuracy?

    International Nuclear Information System (INIS)

    Purpose: To evaluate the influence of different arm positions on abdominal image quality during initial whole-body CT (WBCT) in polytraumatized patients and to assess the risk of missing potentially life-threatening injuries due to arm artifacts. Materials and methods: Between July 2011 and February 2013, WBCT scans of 203 patients with arms in the abdominal area during initial WBCT were analyzed. Six different arms-down positions were defined: patients with both (group A)/one arm(s) (group B) down alongside the torso, patients with both (group C)/one arm(s) (group D) crossed in front of the upper abdomen, patients with both (group E)/one arm(s) (group F) crossed in front of the pelvic area. A group of 203 patients with elevated arms beside the head served as a control group. Two observers jointly evaluated image quality of different organ regions using a 4-point scale system. Follow-up examinations (CT scans and/or ultrasound) were analyzed to identify findings missed during initial WBCT due to reduced image quality. Results: Image quality for most of the organ regions analyzed was found to be significantly different among all groups (p < 0.05). Image quality was most severely degraded in group A, followed by groups E and C. Positioning with one arm up resulted in significantly better image quality than both arms down (p < 0.05). Overall, arms-up positioning showed significantly better image quality than arms-down positions (p < 0.05). In one case, liver hemorrhage missed in the initial WBCT because of arm artifacts, was revealed by follow-up CT. Conclusion: In WBCT arms-down positioning significantly degrades abdominal image quality and artifacts might even conceal potentially life-threatening injuries. If the patient's status does not allow elevation of both arms, image quality can benefit from raising at least one arm. Otherwise, arms should be placed in front of the upper abdomen instead of alongside the torso

  5. Acupuncture Treatment of Abdominal Pain

    Institute of Scientific and Technical Information of China (English)

    胡金生

    2002-01-01

    @@ Case History Mr. Li, a university student aged 23 years, paid his first visit on July 16, 2001, with the chief complaint of abdominal pain for one day. The patient stated that one day before when it happened to be the weekend, he got abdominal pain after supper, which went worse gradually and caused him to roll all over in bed. The pain was slightly alleviated half an hour later after he had taken some pain killers. Upon inquiry, the patient said that because of their newly graduation from the university, he and his classmates were so excited that they went to have a sumptuous lunch with alcoholic drinks. And in the evening he ate again a delicious supper cooked for him by his mother, after which he continued to have some fruit and dessert.

  6. Subtotal versus total abdominal hysterectomy

    DEFF Research Database (Denmark)

    Andersen, Lea Laird; Ottesen, Bent; Alling Møller, Lars Mikael;

    2015-01-01

    , constipation, pain, sexuality, quality of life (Short Form-36 questionnaire), hospital contacts, and vaginal bleeding. RESULTS: The questionnaire was answered by 197 of 304 women (64.8%) (subtotal hysterectomy [n = 97] [63.4%]; total hysterectomy [n = 100] [66.2%]). Mean follow-up time was 14 years and mean...... hysterectomy. All women enrolled in the trial from 1996 to 2000 who were still alive and living in Denmark (n = 304) were invited to answer the validated questionnaire used in prior 1 and 5 year follow-ups. Hospital contacts possibly related to hysterectomy from 5 to 14 years postoperatively were registered......, randomized clinical trial without blinding. Eleven gynecological departments in Denmark contributed participants to the trial. Women referred for benign uterine diseases who did not have contraindications to subtotal abdominal hysterectomy were randomized to subtotal (n = 161) vs total (n = 158) abdominal...

  7. Enhanced MR imaging of tenosynovitis of hand and wrist in inflammatory arthritis

    Energy Technology Data Exchange (ETDEWEB)

    Tehranzadeh, J.; Ashilyan, O.; Anavim, A.; Tramma, S. [Univ. of California, Orange (United States). Dept. of Radiological Sciences

    2006-11-15

    The purpose of this study is to describe the appearance of tenosynovitis in various tendon groups in the wrist and hand and to compare MR enhanced and non-enhanced imaging evaluation of tenosynovitis of hand and wrist in inflammatory arthritis. We reviewed 72 MRI studies of hands and wrists, including coronal, axial and sagittal images in 30 consecutive patients with inflammatory arthritis and tenosynovitis. We compared the degree of synovitis on T2-weighted vs contrast-enhanced T1-weighted images, using a predetermined scale. We also measured the extent of tenosynovitis in three dimensions. The tendons were assigned to volar, dorsal, ulnar and radial groups in the wrist and to extensor, flexor and thumb groups in the hand. Degree of tenosynovitis (graded 0-3), cross-sectional area and volume of the inflamed synovium in various tendon groups were then compared by statistical analysis. Review of the medical records revealed the following diagnoses in our patient population: rheumatoid arthritis (n=16), unspecified inflammatory polyarthritis (n=9), psoriatic arthritis (n=2), CREST syndrome (n=1), systemic lupus erythematosus (n=1), paraneoplastic syndrome with arthritis (n=1). The average T2 brightness scores and post-gadolinium enhancement scores were 1.0 and 1.7 respectively (P<0.001) in the wrist studies. The average T2 brightness scores and post-gadolinium enhancement scores were 0.7 and 1.4, respectively (P<0.001) in the hand studies. The average sensitivity of T2-weighted imaging for detection of tenosynovitis was 40% in the hand and 67% in the wrist tendons, when contrast-enhanced images were used as a reference. Carpal tunnel flexor tendons were the most frequently affected tendons of the wrist. The most frequently affected tendons of the hand were second and third flexor tendons. The hand flexors demonstrated higher degrees of enhancement and larger volumes of the inflamed tenosynovium than did the hand extensors and tendons of the thumb.

  8. MRI findings of the wrist in patients with multiple osteonecrosis in large joints of the extremities

    International Nuclear Information System (INIS)

    We evaluated MRI findings of the wrist in patients who had multiple osteonecrosis in the large joints of their extremities (hips, knees, shoulders, and ankles) and compared these with the clinical symptoms and radiographical findings. Sixty wrists of 30 patients (3 males and 27 females) with multiple osteonecrosis were studied. Subjects ranged in age from 16 to 59 years. Their primary diseases were SLE in 24 patients, alcoholic osteonecrosis in two, Sjoegren's syndrome in one, dermatomyositis in one, leukemia in one, and MCTD in one patient. Using MRI, we found osteonecrosis in seven wrists of four patients. Lesions were seen in six scaphoids of three patients, in two lunates of two patients, and in one capitate. We noted a reduced range of motion in three of the seven wrists with osteonecrosis. Two of the seven complained at wrist pain at motion, although three wrists were symptom free. Radiographically, an abnormality was recognized in two of the seven wrists. Generally, osteonecrosis of the lunate (Kienboeck's disease) is more frequent than that of the scaphoid (Preiser's disease). However in the present series, we found a higher osteonecrosis rate of the scaphoid than the lunate, using MRI. The discrepancy can be explained by the vascularity. In 1986, Gelberman reported that the scaphoid, the capitate, and 8% of the lunate had either vessels entering only one surface or large areas of bone that were dependent on a single vessel. The present study is consistent with these anatomical features. In other words, the present results demonstrated that Kienboeck's disease can be induced not only by a deficient blood supply but also by some additional factors. (author)

  9. MRI findings of the wrist in patients with multiple osteonecrosis in large joints of the extremities

    Energy Technology Data Exchange (ETDEWEB)

    Saitoh, Shinobu; Ebata, Tatsuki; Abe, Kazuhiro [Chiba Univ. (Japan). School of Medicine; Imai, Katsumi; Rokkaku, Tomoyuki

    1998-02-01

    We evaluated MRI findings of the wrist in patients who had multiple osteonecrosis in the large joints of their extremities (hips, knees, shoulders, and ankles) and compared these with the clinical symptoms and radiographical findings. Sixty wrists of 30 patients (3 males and 27 females) with multiple osteonecrosis were studied. Subjects ranged in age from 16 to 59 years. Their primary diseases were SLE in 24 patients, alcoholic osteonecrosis in two, Sjoegren`s syndrome in one, dermatomyositis in one, leukemia in one, and MCTD in one patient. Using MRI, we found osteonecrosis in seven wrists of four patients. Lesions were seen in six scaphoids of three patients, in two lunates of two patients, and in one capitate. We noted a reduced range of motion in three of the seven wrists with osteonecrosis. Two of the seven complained at wrist pain at motion, although three wrists were symptom free. Radiographically, an abnormality was recognized in two of the seven wrists. Generally, osteonecrosis of the lunate (Kienboeck`s disease) is more frequent than that of the scaphoid (Preiser`s disease). However in the present series, we found a higher osteonecrosis rate of the scaphoid than the lunate, using MRI. The discrepancy can be explained by the vascularity. In 1986, Gelberman reported that the scaphoid, the capitate, and 8% of the lunate had either vessels entering only one surface or large areas of bone that were dependent on a single vessel. The present study is consistent with these anatomical features. In other words, the present results demonstrated that Kienboeck`s disease can be induced not only by a deficient blood supply but also by some additional factors. (author)

  10. [A case of abdominal wall actinomycosis].

    Science.gov (United States)

    Kim, Kyung Hoon; Lee, Jin Soo; Cho, Hyeong Jun; Choi, Seung Bong; Cheung, Dae Young; Kim, Jin Il; Lee, In Kyu

    2015-04-01

    Actinomycosis is a chronic suppurative granulomatous infectious disease caused by actinomyces species that is characterized by formation of characteristic clumps called as sulfur granules. Abdominal actinomycosis is a rare disease and is often difficult to diagnose before operation. Abdominal actinomycosis infiltrating into the abdominal wall and adhering to the colon is even rarer. Most abdominal actinomycosis develops after operation, trauma or inflammatory bowel disease, and is also considered as an opportunistic infection in immunocompromised patient with underlying malignancy, diabetes mellitus, human immunodeficiency virus infection, etc. Actinomycosis is diagnosed based on histologic demonstration of sulfur granules in surgically resected specimen or pus, and treatment consists of long-term penicillin based antibiotics therapy with or without surgical resection. Herein, we report an unusual case of abdominal wall actinomycosis which developed in a patient after acupuncture and presented as abdominal wall mass that was first mistaken for abdominal wall invasion of diverticulum perforation. PMID:25896158

  11. Transverse ultrasound assessment of median nerve deformation and displacement in the human carpal tunnel during wrist movements.

    Science.gov (United States)

    Wang, Yuexiang; Zhao, Chunfeng; Passe, Sandra M; Filius, Anika; Thoreson, Andrew R; An, Kai-Nan; Amadio, Peter C

    2014-01-01

    The symptoms of carpal tunnel syndrome, a compression neuropathy of the median nerve at the wrist, are aggravated by wrist motion, but the effect of these motions on median nerve motion are unknown. To better understand the biomechanics of the abnormal nerve, it is first necessary to understand normal nerve movement. The purpose of this study was to evaluate the deformation and displacement of the normal median nerve at the proximal carpal tunnel level on transverse ultrasound images during different wrist movements, to have a baseline for comparison with abnormal movements. Dynamic ultrasound images of both wrists of 10 asymptomatic volunteers were obtained during wrist maximal flexion, extension and ulnar deviation. To simplify the analysis, the initial and final shape and position of the median nerve were measured and analyzed. The circularity of the median nerve was significantly increased and the aspect ratio and perimeter were significantly decreased in the final image compared with the first image during wrist flexion with finger extension, wrist flexion with finger flexion and wrist ulnar deviation with finger extension (p carpal tunnel, wrist flexion and ulnar deviation could induce significant transverse displacement and deformation of the median nerve.

  12. Acute Abdominal Pain in Children.

    Science.gov (United States)

    Reust, Carin E; Williams, Amy

    2016-05-15

    Acute abdominal pain accounts for approximately 9% of childhood primary care office visits. Symptoms and signs that increase the likelihood of a surgical cause for pain include fever, bilious vomiting, bloody diarrhea, absent bowel sounds, voluntary guarding, rigidity, and rebound tenderness. The age of the child can help focus the differential diagnosis. In infants and toddlers, clinicians should consider congenital anomalies and other causes, including malrotation, hernias, Meckel diverticulum, or intussusception. In school-aged children, constipation and infectious causes of pain, such as gastroenteritis, colitis, respiratory infections, and urinary tract infections, are more common. In female adolescents, clinicians should consider pelvic inflammatory disease, pregnancy, ruptured ovarian cysts, or ovarian torsion. Initial laboratory tests include complete blood count, erythrocyte sedimentation rate or C-reactive protein, urinalysis, and a pregnancy test. Abdominal radiography can be used to diagnose constipation or obstruction. Ultrasonography is the initial choice in children for the diagnosis of cholecystitis, pancreatitis, ovarian cyst, ovarian or testicular torsion, pelvic inflammatory disease, pregnancy-related pathology, and appendicitis. Appendicitis is the most common cause of acute abdominal pain requiring surgery, with a peak incidence during adolescence. When the appendix is not clearly visible on ultrasonography, computed tomography or magnetic resonance imaging can be used to confirm the diagnosis. PMID:27175718

  13. Abdominal wound closure: current perspectives

    Directory of Open Access Journals (Sweden)

    Williams ZF

    2015-12-01

    Full Text Available Zachary F Williams, William W Hope Department of Surgery, South East Area Health Education Center, New Hanover Regional Medical Center, Wilmington, NC, USA Abstract: This review examines both early and late wound complications following laparotomy closure, with particular emphasis on technical aspects that reduce hernia formation. Abdominal fascial closure is an area of considerable variation within the field of general surgery. The formation of hernias following abdominal wall incisions continues to be a challenging problem. Ventral hernia repairs are among the most common surgeries performed by general surgeons, and despite many technical advances in the field, incisional hernia rates remain high. Much attention and research has been directed to the surgical management of hernias. Less focus has been placed on prevention of hernia formation despite its obvious importance. This review examines the effects of factors such as the type of incision, suture type and size, closure method, patient risk factors, and the use of prophylactic mesh. Keywords: incisional, abdominal, hernia, prevention, wound closure techniques 

  14. Orthogonal views improves localisation in bone scans of wrist

    Energy Technology Data Exchange (ETDEWEB)

    Roth, A.L.

    1997-09-01

    Full text: Of all nuclear medicine studies, bone scans are the most fundamental. However, straightforward these may seem, there are always mechanisms that can be implemented which assist in a more precise diagnosis, particularly in areas with an intricate bone structure. An 18-year-old right-handed student presented to her doctor with a one month history of pain over the right distal radio-ulna joint area. Clinically, she had prominence of the right ulna, which suggested that there may have been a previous injury to the wrist. Also, pronation/supination were painful where there was swelling of the extensor carpi ulnaris tendon, as well as some discomfort with clicking in ulna deviation/rotation. The X-rays demonstrated some premature radial epiphysial closure. A bone scan was requested to attempt to localise the main inflammatory focus. The dynamic study was performed in the planar projection with an immediate blood pool for 300k being taken. These demonstrated a vascular blush medially. A medial blood pool image was acquired and it localised the abnormal vascularity as being dorsal. A separate focal area of less intense blood pooling was also noted in the line of the distal ulna. Delayed images showed increased uptake localised to the ulna styloid. Anatomically, the superficial vascular blush correlated with tenosynovitis. Hence, the orthogonal initial and delayed images were definitive in the diagnoses of tenosynovitis of the extensor carpi ulnaris tendon. This clearly complements the information provided by the palmar view. However, it is important to remember that an increased radiation dose to the technologist is incurred as a result of the extra orthogonal view, hence attention to technique is imperative.

  15. Managing new arms races

    International Nuclear Information System (INIS)

    The management of new arms races in the region of Asia-Pacific includes considerations of weapons trade and transfer in the region, with an emphasis on nuclear weapons proliferation. It deals with the problem of controlling the arms trade and the efforts to control conventional weapons and underlines the possible role and influence of Conference on Cooperation and Security in Europe (CSCE)

  16. ARM Mentor Selection Process

    Energy Technology Data Exchange (ETDEWEB)

    Sisterson, D. L. [Argonne National Lab. (ANL), Argonne, IL (United States)

    2015-10-01

    The Atmospheric Radiation Measurement (ARM) Program was created in 1989 with funding from the U.S. Department of Energy (DOE) to develop several highly instrumented ground stations to study cloud formation processes and their influence on radiative transfer. In 2003, the ARM Program became a national scientific user facility, known as the ARM Climate Research Facility. This scientific infrastructure provides for fixed sites, mobile facilities, an aerial facility, and a data archive available for use by scientists worldwide through the ARM Climate Research Facility—a scientific user facility. The ARM Climate Research Facility currently operates more than 300 instrument systems that provide ground-based observations of the atmospheric column. To keep ARM at the forefront of climate observations, the ARM infrastructure depends heavily on instrument scientists and engineers, also known as lead mentors. Lead mentors must have an excellent understanding of in situ and remote-sensing instrumentation theory and operation and have comprehensive knowledge of critical scale-dependent atmospheric processes. They must also possess the technical and analytical skills to develop new data retrievals that provide innovative approaches for creating research-quality data sets. The ARM Climate Research Facility is seeking the best overall qualified candidate who can fulfill lead mentor requirements in a timely manner.

  17. Urgent Abdominal Re-Explorations

    Directory of Open Access Journals (Sweden)

    Peskersoy Mustafa

    2006-04-01

    Full Text Available Abstract Background Treatment of a number of complications that occur after abdominal surgeries may require that Urgent Abdominal Re-explorations (UARs, the life-saving and obligatory operations, are performed. The objectives of this study were to evaluate the reasons for performing UARs, outcomes of relaparotomies (RLs and factors that affect mortality. Methods Demographic characteristics; initial diagnoses; information from and complications of the first surgery received; durations and outcomes of UAR(s performed in patients who received early RLs because of complicated abdominal surgeries in our clinic between 01.01.2000 and 31.12.2004 were investigated retrospectively. Statistical analyses were done using the chi-square and Fisher exact tests. Results Early UAR was performed in 81 out of 4410 cases (1.8%. Average patient age was 50.46 (13–81 years with a male-to-female ratio of 60/21. Fifty one (62.96% patients had infection, 41 (50.61% of them had an accompanying serious disease, 24 (29.62% of them had various tumors and 57 (70.37% patients were operated under emergency conditions during first operation. Causes of urgent abdominal re-explorations were as follows: leakage from intestinal repair site or from anostomosis (n:34; 41.97%; hemorrhage (n:15; 18.51%; intestinal perforation (n:8; 9.87%; intraabdominal infection or abscess (n:8; 9.87%; progressive intestinal necrosis (n:7; 8.64%; stomal complications (n:5; 6.17%; and postoperative ileus (n:4; 4.93%. Two or more UARs were performed in 18 (22.22% cases, and overall mortality was 34.97% (n:30. Interval between the first laparotomy and UAR averaged as 6.95 (1–20 days, and average hospitalization period was 27.1 (3–78 days. Mortality rate was found to be higher among the patients who received multiple UARs. The most common (55.5% cause of mortality was sepsis/multiple organ failure (MOF. The rates for common mortality and sepsis/MOF-dependent mortality that occured following UAR were

  18. Robot-Aided Mapping of Wrist Proprioceptive Acuity across a 3D Workspace.

    Science.gov (United States)

    Marini, Francesca; Squeri, Valentina; Morasso, Pietro; Konczak, Jürgen; Masia, Lorenzo

    2016-01-01

    Proprioceptive signals from peripheral mechanoreceptors form the basis for bodily perception and are known to be essential for motor control. However we still have an incomplete understanding of how proprioception differs between joints, whether it differs among the various degrees-of-freedom (DoFs) within a particular joint, and how such differences affect motor control and learning. We here introduce a robot-aided method to objectively measure proprioceptive function: specifically, we systematically mapped wrist proprioceptive acuity across the three DoFs of the wrist/hand complex with the aim to characterize the wrist position sense. Thirty healthy young adults performed an ipsilateral active joint position matching task with their dominant wrist using a haptic robotic exoskeleton. Our results indicate that the active wrist position sense acuity is anisotropic across the joint, with the abduction/adduction DoF having the highest acuity (the error of acuity for flexion/extension is 4.64 ± 0.24°; abduction/adduction: 3.68 ± 0.32°; supination/pronation: 5.15 ± 0.37°) and they also revealed that proprioceptive acuity decreases for smaller joint displacements. We believe this knowledge is imperative in a clinical scenario when assessing proprioceptive deficits and for understanding how such sensory deficits relate to observable motor impairments.

  19. Preliminary analysis of non-dominant proprioceptive acuity and interlimb asymmetry in the human wrist.

    Science.gov (United States)

    Contu, Sara; Cappello, Leonardo; Konczak, Jurgen; Masia, Lorenzo

    2015-08-01

    Proprioception provides information about limb configuration which are essential for planning and controlling its posture and movement. Asymmetries in the way dominant and non-dominant limbs exploit proprioceptive information have been previously evaluated, with contradictory results due to the difference in the employed methodology. A measure of proprioceptive acuity that does not reflect the influence of one limb on the other consists in the evaluation of the psychophysical threshold. This metric, evaluated separately for each limb and involving only passive movements, reflects a reliable measure of proprioceptive acuity. The aim of this work is to first evaluate the proprioceptive acuity of the non-dominant wrist joint in flexion/extension and adduction/abduction and to compare these results to the acuity of the dominant wrist. Data were collected during a unidirectional 2-alternative-forcedchoice test performed by six right-handed subjects. We found acuity of 1.31°, 1.26°, 1.33° and 1.63° respectively for abduction, adduction, extension and flexion of the non-dominant wrist. Acuity of the dominant wrist was assessed for five of the subjects for abduction and flexion and resulted lower (mean values were respectively 1.64° and 2.14°). The preliminary results suggest a leading role of the non-dominant wrist in the processing of the proprioceptive feedback.

  20. Arthrographic effect induced by therapeutic ultrasound in magnetic resonance imaging of the wrist: a preliminary investigation

    International Nuclear Information System (INIS)

    To evaluate the potential arthrographic effect of therapeutic ultrasound applied before magnetic resonance imaging (MRI) of the wrist. Subjects and methods: MRI of the wrist was performed in 6 asymptomatic volunteers before and after ultrasound therapy of the carpus. For each patient, ultrasound therapy was performed by a trained physiotherapist for 10 minutes, with doses titrated to the maximum tolerated without pain. The amount of fluid within the wrist joints before and after therapy was assessed subjectively by 2 reviewers, as well as objectively by digital analysis. Results: Subjective appraisal of the images indicated that after ultrasound therapy there was an increase in joint fluid within the distal radioulnar joint in 4 volunteers, the midcarpal joint in 4 and the radiocarpal joint in 2. Computerized digital analysis of joint fluid confirmed an average volumetric increase in wrist joint fluid of 52.8% in 3 of the volunteers. The discomfort of the therapy was graded as 1/10 by 5 of the subjects and 4/10 by a single subject. Conclusions: Therapeutic ultrasound may be a useful adjuvant tool in the noninvasive induction of joint fluid before MRI of the wrist. (author)

  1. Robot-Aided Mapping of Wrist Proprioceptive Acuity across a 3D Workspace.

    Science.gov (United States)

    Marini, Francesca; Squeri, Valentina; Morasso, Pietro; Konczak, Jürgen; Masia, Lorenzo

    2016-01-01

    Proprioceptive signals from peripheral mechanoreceptors form the basis for bodily perception and are known to be essential for motor control. However we still have an incomplete understanding of how proprioception differs between joints, whether it differs among the various degrees-of-freedom (DoFs) within a particular joint, and how such differences affect motor control and learning. We here introduce a robot-aided method to objectively measure proprioceptive function: specifically, we systematically mapped wrist proprioceptive acuity across the three DoFs of the wrist/hand complex with the aim to characterize the wrist position sense. Thirty healthy young adults performed an ipsilateral active joint position matching task with their dominant wrist using a haptic robotic exoskeleton. Our results indicate that the active wrist position sense acuity is anisotropic across the joint, with the abduction/adduction DoF having the highest acuity (the error of acuity for flexion/extension is 4.64 ± 0.24°; abduction/adduction: 3.68 ± 0.32°; supination/pronation: 5.15 ± 0.37°) and they also revealed that proprioceptive acuity decreases for smaller joint displacements. We believe this knowledge is imperative in a clinical scenario when assessing proprioceptive deficits and for understanding how such sensory deficits relate to observable motor impairments. PMID:27536882

  2. Wrist arthroscopy: a prospective analysis of 53 post-traumatic carpal injuries.

    Science.gov (United States)

    Sennwald, G R; Zdravkovic, V

    1997-09-01

    We carried out a prospective study of 53 consecutive patients who had sustained a serious wrist injury. Patients who presented with a previous condition or who had undergone surgery to the wrist were excluded. History, clinical findings, standard radiographs and arthrography were correlated with the uninjured side and with arthroscopic findings. The radiolunate (RL) angle of the injured wrist differed significantly from that of the "normal" wrist (p = 0.088). POssible correlations within the whole group were studied by multivariate analysis, particularly k-means clustering, a procedure which enables the detection of natural groups. We found that ligamentous tears at the triquetrum in the midcarpal joint significantly (p = 0.004) affected the equilibrium of the proximal row defined by clustering with the RL and scapholunate (SL) angles. The use of multivariate analysis techniques in combination with cross tabulation for the surgery of intracarpal ligamentous abnormalities seen at arthroscopy might help us to define better the function of the ligaments of the wrist. These findings, of little help in daily practice, might be important for clinical research.

  3. Robot-Aided Mapping of Wrist Proprioceptive Acuity across a 3D Workspace

    Science.gov (United States)

    Marini, Francesca; Squeri, Valentina; Morasso, Pietro; Konczak, Jürgen; Masia, Lorenzo

    2016-01-01

    Proprioceptive signals from peripheral mechanoreceptors form the basis for bodily perception and are known to be essential for motor control. However we still have an incomplete understanding of how proprioception differs between joints, whether it differs among the various degrees-of-freedom (DoFs) within a particular joint, and how such differences affect motor control and learning. We here introduce a robot-aided method to objectively measure proprioceptive function: specifically, we systematically mapped wrist proprioceptive acuity across the three DoFs of the wrist/hand complex with the aim to characterize the wrist position sense. Thirty healthy young adults performed an ipsilateral active joint position matching task with their dominant wrist using a haptic robotic exoskeleton. Our results indicate that the active wrist position sense acuity is anisotropic across the joint, with the abduction/adduction DoF having the highest acuity (the error of acuity for flexion/extension is 4.64 ± 0.24°; abduction/adduction: 3.68 ± 0.32°; supination/pronation: 5.15 ± 0.37°) and they also revealed that proprioceptive acuity decreases for smaller joint displacements. We believe this knowledge is imperative in a clinical scenario when assessing proprioceptive deficits and for understanding how such sensory deficits relate to observable motor impairments. PMID:27536882

  4. Tennis Racket Vibrations and Shock Transmission to the Wrist during Forehand Drive

    Science.gov (United States)

    Rogowski, Isabelle; Creveaux, Thomas; Triquigneaux, Sylvain; Macé, Pierre; Gauthier, Fabien; Sevrez, Violaine

    2015-01-01

    This study aimed to investigate the effects of two different racket models and two different forehand drive velocities on the three-dimensional vibration behavior of the racket and shock transmission to the player’s wrist under real playing conditions. Nine tennis players performed a series of crosscourt flat forehand drives at two velocities, using a lightly and a highly vibrant racket. Two accelerometers were fixed on the racket frame and the player’s wrist. The analysis of vibration signals in both time and frequency domains showed no interaction effect of velocity and racket conditions either on the racket vibration behavior or on shock transmission. An increase in playing velocity enlarged the amount of vibrations at the racket and wrist, but weakly altered their frequency content. As compared to a racket perceived as highly vibrating, a racket perceived as lightly vibrating damped longer in the out-of-plane axis of the racket and shorter on the other axis of the racket and on the wrist, and displayed a lower amount of energy in the high frequency of the vibration signal at the racket and wrist. These findings indicated that the playing velocity must be controlled when investigating the vibration loads due to the racket under real playing conditions. Similarly, a reduced perception of vibration by the tennis player would be linked to decreased amplitude of the racket vibration signal, which may concentrate the signal energy in the low frequencies. PMID:26177373

  5. NMR findings in patients after wrist trauma with a negative plain radiographs

    International Nuclear Information System (INIS)

    The purpose was to assess the prevalence and location of the injuries of the carpal bones and soft tissue of the wrist on NMR in patients with negative radiographs. A total of 89 patients (9–81years) were consecutively examined after wrist trauma. Radiograms were performed in four projections: AP, PA, oblique and lateral. In 63 cases of negative radiographs and persistent clinical problem, simplified NMR (T1,T2, STIR; in coronal plane) was conducted with a 1.5 Tesla magnet. Results were evaluated by two independent observers. A positive X-ray result was stated when at least one observer suggested bone fracture. The MR images were viewed for detection of possible bone fracture, bone edema and soft tissue injuries. Cohen’s kappa coefficient was calculated to assess the quality of chosen criteria by means of agreement between both observers and both methods. As many as 26 X-ray studies were classified as positive. Substantial agreement between independent observers was found (kappa=0.63). In 17 cases out of 63 with two negative wrist radiogram, the NMR result was positive (19%). The most frequently fractured or injured bone was scaphoid (10 cases) and distal radius (5 cases). Fair agreement was found between X-ray and NMR studies (kappa=0.37) due to different diagnostic information received in both methods. Simplified NMR imaging of the wrist proved to be strongly efficient in the detection of pathological changes in injured wrists

  6. A Bioinspired 10 DOF Wearable Powered Arm Exoskeleton for Rehabilitation

    Directory of Open Access Journals (Sweden)

    Soumya Kanti Manna

    2013-01-01

    Full Text Available The developed exoskeleton device (Exorn has ten degrees of freedom to control joints starting from shoulder griddle to wrist to provide better redundancy, portability, and flexibility to the human arm motion. A 3D conceptual model is being designed to make the system wearable by human arm. All the joints are simple revolute joints with desired motion limit. A Simulink model of the human arm is being developed with proper mass and length to determine proper torque required for actuating those joints. Forward kinematics of the whole system has been formulated for getting desired dexterous workspace. A proper and simple Graphical User Interface (GUI and the required embedded system have been designed for providing physiotherapy lessons to the patients. In the literature review it has been found that researchers have generally ignored the motion of shoulder griddle. Here we have implemented those motions in our design. It has also been found that people have taken elbow pronation and supination motion as a part of shoulder internal and external rotation though both motions are quite different. A predefined resolved motion rate control structure with independent joint control is used so that all movements can be controlled in a predefined way.

  7. The effect of forearm posture on wrist flexion in computer workers with chronic upper extremity musculoskeletal disorders

    Directory of Open Access Journals (Sweden)

    Thompson R Terry

    2008-04-01

    Full Text Available Abstract Background Occupational computer use has been associated with upper extremity musculoskeletal disorders (UEMSDs, but the etiology and pathophysiology of some of these disorders are poorly understood. Various theories attribute the symptoms to biomechanical and/or psychosocial stressors. The results of several clinical studies suggest that elevated antagonist muscle tension may be a biomechanical stress factor. Affected computer users often exhibit limited wrist range of motion, particularly wrist flexion, which has been attributed to increased extensor muscle tension, rather than to pain symptoms. Recreational or domestic activities requiring extremes of wrist flexion may produce injurious stress on the wrist joint and muscles, the symptoms of which are then exacerbated by computer use. As these activities may involve a variety of forearm postures, we examined whether changes in forearm posture have an effect on pain reports during wrist flexion, or whether pain would have a limiting effect on flexion angle. Methods We measured maximum active wrist flexion using a goniometer with the forearm supported in the prone, neutral, and supine postures. Data was obtained from 5 subjects with UEMSDs attributed to computer use and from 13 control subjects. Results The UEMSD group exhibited significantly restricted wrist flexion compared to the control group in both wrists at all forearm postures with the exception of the non-dominant wrist with the forearm prone. In both groups, maximum active wrist flexion decreased at the supine forearm posture compared to the prone posture. No UEMSD subjects reported an increase in pain symptoms during testing. Conclusion The UEMSD group exhibited reduced wrist flexion compared to controls that did not appear to be pain related. A supine forearm posture reduced wrist flexion in both groups, but the reduction was approximately 100% greater in the UEMSD group. The effect of a supine forearm posture on wrist

  8. In-vivo three-dimensional carpal bone kinematics during flexion-extension and radio-ulnar deviation of the wrist: Dynamic motion versus step-wise static wrist positions

    NARCIS (Netherlands)

    M. Foumani; S.D. Strackee; R. Jonges; L. Blankevoort; A.H. Zwinderman; B. Carelsen; G.J. Streekstra

    2009-01-01

    An in-vivo approach to the measurement of three-dimensional motion patterns of carpal bones in the wrist may have future diagnostic applications, particularly for ligament injuries of the wrist. Static methods to measure carpal kinematics in-vivo only provide an approximation of the true kinematics

  9. 腕部电烧伤创面修复的临床分析%Clinical analysis to repairs of electrical burn of wrist

    Institute of Scientific and Technical Information of China (English)

    张功宝; 崔素英; 张成书

    2009-01-01

    Objective To choose a better metherds to repair electrical burns of Wrist.Methods We had treated 72 limbs of 64 patients between 1994 to 2008 which were divivided into two groups by differents choice of opperations.The abdominal pedicle flap were used in one group,local axial flap and free skin flap were used in another group.Results There was no differences between two groups in the injury,age and operation time,but was significant differences in the wound healing rate,preservation of the important deep fissure and complications(P<0.01).Conclusion It's more worthy recommendating to use local axial flap and free flap to repair electrical burns of wrist.%目的 腕部电烧伤创面修复的最佳皮瓣选择.方法 将1994~2008年间应用皮瓣修复腕部电烧伤创面64例72个肢体分成两个组进行比较分析,一组为腹部带蒂皮瓣修复,另一组为局部轴型皮瓣及游离皮瓣修复.结果 两组患者在伤情严重性、年龄和手术时间等方面均基本相同,但两组患者创而愈合率及深部重要组织保存,以及严重并发症发生有很大差异(P<0.01).结论 用局部轴型皮瓣和游离皮瓣修复腕部电烧伤较用腹部带蒂皮瓣修复有明显优越性.

  10. Role of muscles in the stabilization of ligament-deficient wrists.

    Science.gov (United States)

    Esplugas, Mireia; Garcia-Elias, Marc; Lluch, Alex; Llusá Pérez, Manuel

    2016-01-01

    This article reviews the results of a series of cadaver investigations aimed at clarifying the role of muscles in the stabilization of ligament-deficient wrists. According to these studies, isometric contraction of some forearm muscles induces midcarpal (MC) supination (ie, the abductor pollicis longus, extensor carpi radialis longus, and flexor carpi ulnaris), whereas other muscles induce MC pronation (ie, the extensor carpi ulnaris). Because MC supination implies tightening of the volar scaphoid-distal row ligaments, the MC supination muscles are likely to prevent scaphoid collapse of wrists with scapholunate ligament insufficiency. MC pronator muscles, by contrast, would be beneficial in stabilizing wrists with ulnar-sided ligament deficiencies owing to their ability to tighten the triquetrum-distal row ligaments. Should these laboratory findings be validated by additional clinical research, proprioceptive reeducation of selected muscles could become an important tool for the treatment of dynamic carpal instabilities. PMID:27264901

  11. Development and validation of a computer-based learning module for wrist arthroscopy.

    Science.gov (United States)

    Obdeijn, M C; Alewijnse, J V; Mathoulin, C; Liverneaux, P; Tuijthof, G J M; Schijven, M P

    2014-04-01

    The objective of this study was to develop and validate a computer-based module for wrist arthroscopy to which a group of experts could consent. The need for such a module was assessed with members of the European Wrist Arthroscopy Society (EWAS). The computer-based module was developed through several rounds of consulting experts on the content. The module's learning enhancement was tested in a randomized controlled trial with 28 medical students who were assigned to the computer-based module group or lecture group. The design process led to a useful tool, which is supported by a panel of experts. Although the computer based module did not enhance learning, the participants did find the module more pleasant to use. Developing learning tools such as this computer-based module can improve the teaching of wrist arthroscopy skills.

  12. The EULAR-OMERACT rheumatoid arthritis MRI reference image atlas: the wrist joint

    DEFF Research Database (Denmark)

    Ejbjerg, B; McQueen, F; Lassere, M;

    2005-01-01

    This paper presents the wrist joint MR images of the EULAR-OMERACT rheumatoid arthritis MRI reference image atlas. Reference images for scoring synovitis, bone oedema, and bone erosions according to the OMERACT RA MRI scoring (RAMRIS) system are provided. All grades (0-3) of synovitis are......, capitate, and a metacarpal base. In these bones, grades 0-3 of bone oedema are illustrated, and for bone erosion, grades 0-3 and examples of higher grades are presented. The presented reference images can be used to guide scoring of wrist joints according to the OMERACT RA MRI scoring system...... illustrated in each of the three wrist joint areas defined in the scoring system-that is, the distal radioulnar joint, the radiocarpal joint, and the intercarpal-carpometacarpal joints. For reasons of feasibility, examples of bone abnormalities are limited to five selected bones: the radius, scaphoid, lunate...

  13. Validation of a wrist monitor for accurate estimation of RR intervals during sleep.

    Science.gov (United States)

    Renevey, Ph; Sola, J; Theurillat, P; Bertschi, M; Krauss, J; Andries, D; Sartori, C

    2013-01-01

    While the incidence of sleep disorders is continuously increasing in western societies, there is a clear demand for technologies to asses sleep-related parameters in ambulatory scenarios. The present study introduces a novel concept of accurate sensor to measure RR intervals via the analysis of photo-plethysmographic signals recorded at the wrist. In a cohort of 26 subjects undergoing full night polysomnography, the wrist device provided RR interval estimates in agreement with RR intervals as measured from standard electrocardiographic time series. The study showed an overall agreement between both approaches of 0.05 ± 18 ms. The novel wrist sensor opens the door towards a new generation of comfortable and easy-to-use sleep monitors. PMID:24110980

  14. Frequency and spectrum of abnormalities in the bone marrow of the wrist: MR imaging findings

    Energy Technology Data Exchange (ETDEWEB)

    Alam, F.; Schweitzer, M.E. (Thomas Jefferson Univ., Philadelphia, PA (United States). Dept. of Radiology); Li Xiaoxian (Dept. of Radiology, Tangshan Gongren Hospital, Tangshan (China)); Malat, J. (Department of Radiology, Naples Radiologists, Naples (Italy)); Hussain, S.M. (Thomas Jefferson Univ., Philadelphia, PA (United States). Dept. of Radiology Rijksuniversiteit Leiden (Netherlands). Dept. of Diagnostic Radiology)

    1999-06-01

    Objective. To describe the frequency of marrow abnormalities on wrist MR imaging and the MR findings of these various abnormalities.Design and patients. Five hundred and nineteen patients were studied at 1.5 T. Two observers recorded the presence and location of avascular necrosis, occult fractures and arthritic edema [focal osteoarthritis, ulnolunate abutment, rheumatoid arthritis, septic arthritis, gouty arthritis and scapholunate advanced collapse (SLAC)].Results and conclusion. One hundred and eighty-seven (36%) patients demonstrated marrow abnormalities in the wrist, of which 101 were diagnosed as arthritis [64 (34%) as focal osteoarthritis, 17 (9%) as ulnolunate abutment, 15 (8%) as rheumatoid arthritis, 2 as septic arthritis, 2 as SLAC, and 1 as gouty arthritis]. Seventy-two patients had occult fractures and in 27 patients avascular necrosis was seen. MR imaging can reveal various abnormalities in bone marrow of the wrist when findings on radiography are normal or equivocal. (orig.) With 17 figs., 13 refs.

  15. Magnetic resonance imaging of the wrist in early rheumatoid arthritis: a pictorial essay

    International Nuclear Information System (INIS)

    This pictorial essay describes the changes seen in the wrist in early rheumatoid arthritis (RA) on MRI. Magnetic resonance imaging can demonstrate bone erosions, bone marrow signal changes, synovitis and tenosynovitis in early rheumatoid arthritis. Magnetic resonance imaging of the wrist can identify erosions in RA earlier than plain radiographs and can detect more erosions. Common sites include the capitate, lunate and scaphoid. Bone marrow signal changes occur frequently and are most common in the capitate, lunate and triquetrum. Synovial thickening and enhancement are clearly demonstrated with MRI and are most commonly seen in the radiocarpal joint (RCJ). Tenosynovitis can be seen in the wrist in more than half of patients presenting with RA. This most commonly involves the extensor carpi ulnaris tendon and is seen as sheath fluid, thickening and enhancement. Copyright (2001) Blackwell Science Pty Ltd

  16. FULL TERM EXTRAUTERINE ABDOMINAL PREGNANCY

    Directory of Open Access Journals (Sweden)

    Neetu

    2014-02-01

    Full Text Available Extrauterine abdominal pregnancy is extremely rare and is frequently missed during antenatal care, despite the routine use of obstetrics ultrasound. A 23 year old primigravida at 39 weeks of gestation was admitted to the department on December 2 , 2012, in routine hour with transverse lie with oligohydramnios. On examination her vitals and laboratory investigation were within normal limits . One of the ultrasonographic scanning done by radiologist at 35 wk. 3 days gestation demonstrated a single live intrauterine fetus of CGA 33 wk. 1 day with transverse lie , fundal gr II placenta and AFI - 10 cm. Ultrasonography done at the department on the day of admission demonstrated single live intrauterine fetus with transverse lie and AFI - 3.8 cm and EFW 2.4 Kg and placenta was right anterior.. She was planned for elective caesarean section on account of transverse lie and oligohydramnios at term. At laparotomy the following findings were made: Secondary abdominal pregnancy arising from right tubal ectopic rupture and making pseudogesta tional sac with meconium stained liquor. Omentum , right tube and ovary were adhered to sac. The uterus and left tube and ovary were healthy and normal . Other abdominal organs were normal. A 1.5 Kg live male baby with good Apgar score and incompletely formed mandible extracted from pseudo gestational sac. There was significant bleeding from pseudogestational sac and patient went in shock during intraoperative period. One unit whole blood transfused during intraoperative period. Placenta was adherent to the pseudogestational sac so Psudogestational sac was removed with placenta in situ and right sided salpingo - o ophrectomy was also done due to their adherence. Hemostasis was secured. The patient and baby progressed well and were discharged on the seventh postoperative day

  17. Peritoneoscopy of the liver after abdominal surgery.

    Directory of Open Access Journals (Sweden)

    Kawaguchi,Kenji

    1983-02-01

    Full Text Available The incidence of intraperitoneal adhesion after abdominal surgery was studied. Peritoneoscopy was performed in 933 patients with liver diseases over the 6 year 5 month period from March 1974 to July 1980. Of the patients, 352 (37.7% had undergone an abdominal operation, and intraperitoneal adhesion was detected in 205 (58.2% of these patients. The liver was not observable in 5 out of 61 patients with adhesions after upper abdominal operations. Whereas, the liver was clearly observable in patients with lower abdominal operations in spite of adhesions. Out of the 581 patients without any abdominal operations, 30 patients (5.2% had adhesions in the abdominal cavity, and 6 of them had extensive adhesions that partially obscured the observation of liver surface. In all patients, peritoneoscopy was performed without complications by avoiding the surgical scar for puncture sites and ensuring a free air lumen before trocar puncture.

  18. Abdominal manifestations of autoimmune disorders

    International Nuclear Information System (INIS)

    Full text: Immunoglobulin G4-related disease was recognized as a systemic disease since various extrapancreatic lesions were observed in patients with autoimmune pancreatitis (AIP). The real etiology and pathogenesis of IgG4-RD is still not clearly understood. Moreover the exact role of IgG4 or IgG4-positive plasma cells in this disease has not yet been elucidated. only some inconsistent biological features such as hypergammaglobulinemia or hypocomplementemia support the autoimmune nature of the disease process. various names have been ascribed to this clinicopathological entity including IgG4-related sclerosing disease, IgG4-related systemic sclerosing disease, IgG4-related disease, IgG4-related autoimmune disease, hyper-IgG4 disease and IgG4-related systemic disease. The extrapancreatic lesions of IgG4-RD also exhibit the same characteristic histologic features including dense lymphoplasmacytic infiltrate, massive storiform fibrosis, and obliterative phlebitis as seen in IgG4-related pancreatitis. Abdominal manifestations include the following organs/systems: Bile ducts: Sclerosing cholangitis; Gallbladder and liver: Acalculous sclerosis cholecytitis with diffuse wall thickening; hepatic inflammatory pseudotumorts; Kidneys: round or wedge-shaped renal cortical nodules, peripheral cortical; lesions, mass like lesions or renal pelvic involvement; Prostate, urethra, seminal vesicle, vas deferens, uterine cervix; Autoimmune prostatitis; Retroperitoneum: Retroperitoneal fibrosis. thin or mildly thick homogeneous soft tissue lesion surrounding the abdominal aorta and its branches but also bulky masses causing hydronephroureterosis; Mesentery: Sclerosing mesenteritis usually involving the root of the mesentery; Bowel: Inflammatory bowel diseases mimicking Crohn’s disease or ulcerative colitis. various types of sclerosing nodular lesions of the bowel wall; Stomach: Gastritis, gastric ulcers and focal masses mimicking submucosal tumor; omentum: Infiltration mimicking

  19. Screening for Abdominal Aortic Aneurysm

    OpenAIRE

    Linné, Anneli

    2014-01-01

    Abdominal Aortic Aneurysm (AAA) is a common disease with a prevalence of 1.5-2.0% in 65-year old men in Sweden. The risk of having AAA is increased with smoking, high age, family history of AAA and cardiovascular disease. Women have a lower prevalence (0.5%) and develop AAA later in life. An AAA seldom gives any symptom prior to rupture. Untreated rupture is associated with 100% mortality, while surgically treated rupture is associated with 25-70% mortality. Prophylactic sur...

  20. Nonspecific Arm Pain

    Directory of Open Access Journals (Sweden)

    Ali Moradi

    2013-12-01

    Full Text Available   Nonspecific activity-related arm pain is characterized by an absence of objective physical findings and symptoms that do not correspond with objective pathophysiology. Arm pain without strict diagnosis is often related to activity, work-related activity in particular, and is often seen in patients with physically demanding work. Psychological factors such as catastrophic thinking, symptoms of depression, and heightened illness concern determine a substantial percentage of the disability associated with puzzling hand and arm pains. Ergonomic modifications can help to control symptoms, but optimal health may require collaborative management incorporating psychosocial and psychological elements of illness.

  1. Nonspecific Arm Pain

    Directory of Open Access Journals (Sweden)

    Ali Moradi

    2013-12-01

    Full Text Available Nonspecific activity-related arm pain is characterized by an absence of objective physical findings and symptoms that do not correspond with objective pathophysiology. Arm pain without strict diagnosis is often related to activity, work-related activity in particular, and is often seen in patients with physically demanding work. Psychological factors such as catastrophic thinking, symptoms of depression, and heightened illness concern determine a substantial percentage of the disability associated with puzzling hand and arm pains. Ergonomic modifications can help to control symptoms, but optimal health may require collaborative management incorporating psychosocial and psychological elements of illness.

  2. Contribution of arthroscopy in case of septic appearance arthritis of the wrist: a nine cases series.

    Science.gov (United States)

    Hariri, A; Lebailly, F; Zemirline, A; Hendriks, S; Facca, S; Liverneaux, P

    2013-09-01

    Septic arthritis of the wrist is a diagnostic and therapeutic emergency. Synovectomy and lavage by arthrotomy is often followed by stiffness. The purpose of this study was to evaluate the diagnostic and therapeutic contribution of emergency arthroscopic synovectomy with intraarticular lavage. Nine patients were operated on for wrist pathology with septic appearance. All had signs of local inflammation, three showed locoregional inflammation, three were febrile. In one patient several joints were involved. Seven patients presented with inflammatory or degenerative arthritis. All patients underwent emergency surgery using radiocarpal joint puncture, arthroscopic exploration, intraarticular lavage and synovectomy at both the radiocarpal and midcarpal joints. The results were evaluated by pain, Quick DASH, grip strength, and wrist range of motion. In three cases, joint fluid appeared clear, in three it was turbid, and in three purulent. Gram stain and culture revealed bacteria in four cases. Synovitis was radiocarpal four times, radiocarpal and midcarpal once. In one case, there was radiocarpal and midcarpal chondritis. Average pain was 5.3/10 preoperatively and 2/10 at the last clinical follow-up visit. Mean grip strength was 23.3 kg on the involved side vs. 33.5 kg on the opposite one. Mean flexion was 55° for the involved wrist vs. 68°; mean extension was 52° for the affected wrist vs. 59°. No patient was reoperated on. In all cases, there was no sign of local inflammation, regional lymphadenopathy or systemic infection at the last follow-up. One patient died of colon metastatic cancer. Another patient developed a severe Complex Regional Pain Syndrome type I (CRPS1). Our results suggest three principles of management of wrist arthritis with septic appearance: extended surgical indication, emergency operation and arthroscopic procedure.

  3. The use of navigation forces for assessment of wrist arthroscopy skills level.

    Science.gov (United States)

    Obdeijn, Miryam C; van Baalen, Sophie J; Horeman, Tim; Liverneaux, Philippe; Tuijthof, Gabrielle J M

    2014-05-01

    Purpose To provide an efficient learning process, feedback on performance is crucial. In skills laboratories, it is possible to measure the skills and progression of skills of the trainees objectively. This requires metrics that represent the learning curve of the trainee, which were investigated for wrist arthroscopy. The research questions were: What are the forces used by novices during wrist arthroscopy?What aspects of these navigation forces are discriminative for the wrist arthroscopy skills level?Methods A cadaver wrist was mounted in a custom-made distraction device mounted in front of a force platform (ForceTrap). Eleven novices were invited to perform two tasks on the wrist: Insertion of the scope through the 3-4 portal and the hook through the 6R portal, and visualization of the hook in the center of the imageNavigation through the wrist from radial to ulnar with probing and visualization of five predefined landmarksThe second task was repeated 10 times. The absolute force (F abs) and the direction of force were measured. The angle α is defined in the vertical plane, and the angle β in the horizontal plane. Results The median F abs used by novices remained below the force threshold as defined from the expert data (7.3 N). However, the direction of the applied forces by novices in both planes was not consistent with expert data and showed a wider range. Also, there was no improvement after more trials. Conclusion Our study suggests by the absence of a learning curve for the novices and a significant difference between novices and experts that novices can benefit from feedback on the magnitude and direction of forces to improve their performance.

  4. The Use of Navigation Forces for Assessment of Wrist Arthroscopy Skills Level

    Science.gov (United States)

    Obdeijn, Miryam C.; van Baalen, Sophie J.; Horeman, Tim; Liverneaux, Philippe; Tuijthof, Gabrielle J. M.

    2014-01-01

    Purpose To provide an efficient learning process, feedback on performance is crucial. In skills laboratories, it is possible to measure the skills and progression of skills of the trainees objectively. This requires metrics that represent the learning curve of the trainee, which were investigated for wrist arthroscopy. The research questions were: What are the forces used by novices during wrist arthroscopy? What aspects of these navigation forces are discriminative for the wrist arthroscopy skills level? Methods A cadaver wrist was mounted in a custom-made distraction device mounted in front of a force platform (ForceTrap). Eleven novices were invited to perform two tasks on the wrist: Insertion of the scope through the 3–4 portal and the hook through the 6R portal, and visualization of the hook in the center of the image Navigation through the wrist from radial to ulnar with probing and visualization of five predefined landmarks The second task was repeated 10 times. The absolute force (F abs) and the direction of force were measured. The angle α is defined in the vertical plane, and the angle β in the horizontal plane. Results The median F abs used by novices remained below the force threshold as defined from the expert data (7.3 N). However, the direction of the applied forces by novices in both planes was not consistent with expert data and showed a wider range. Also, there was no improvement after more trials. Conclusion Our study suggests by the absence of a learning curve for the novices and a significant difference between novices and experts that novices can benefit from feedback on the magnitude and direction of forces to improve their performance. PMID:25077049

  5. Carpal kinematics in quadrupedal monkeys: towards a better understanding of wrist morphology and function.

    Science.gov (United States)

    Daver, Guillaume; Berillon, Gilles; Grimaud-Hervé, Dominique

    2012-01-01

    The purpose of this study is to provide new data on carpal kinematics in primates in order to deepen our understanding of the relationships between wrist morphology and function. To that end, we provide preliminary data on carpal kinematics in seven species of quadrupedal monkeys that have not been previously investigated in this regard (cercopithecoids, n = 4; ceboids, n = 3). We radiographed wrists from cadavers at their maximum radial and ulnar deviations, as well as at maximum flexion and extension. We took angular measurements to quantify the contribution of the mobility of the two main wrist joints (antebrachiocarpal and midcarpal) with respect to total wrist mobility. We also recorded qualitative observations. Our quantitative results show few clear differences among quadrupedal monkeys for radioulnar deviation and flexion-extension: all the primates studied exhibit a greater midcarpal mobility (approximately 54-83% of the total range of motion) than antebrachiocarpal mobility; however, we identified two patterns of carpal kinematics that show the functional impact of previously recognised morphological variations in quadrupedal monkeys. Firstly, qualitative results show that the partition that divides the proximal joint of the wrist in ceboids results in less mobility and more stability of the ulnar part of the wrist than is seen in cercopithecoids. Secondly, we show that the olive baboon specimen (Papio anubis) is characterised by limited antebrachiocarpal mobility for extension; this effect is likely the result of a radial process that projects on the scaphoid notch, as well as an intraarticular meniscus. Because of these close relationships between carpal kinematics and morphology in quadrupedal monkeys, we hypothesise that, to some extent, these functional tendencies are related to their locomotor hand postures.

  6. The use of navigation forces for assessment of wrist arthroscopy skills level.

    Science.gov (United States)

    Obdeijn, Miryam C; van Baalen, Sophie J; Horeman, Tim; Liverneaux, Philippe; Tuijthof, Gabrielle J M

    2014-05-01

    Purpose To provide an efficient learning process, feedback on performance is crucial. In skills laboratories, it is possible to measure the skills and progression of skills of the trainees objectively. This requires metrics that represent the learning curve of the trainee, which were investigated for wrist arthroscopy. The research questions were: What are the forces used by novices during wrist arthroscopy?What aspects of these navigation forces are discriminative for the wrist arthroscopy skills level?Methods A cadaver wrist was mounted in a custom-made distraction device mounted in front of a force platform (ForceTrap). Eleven novices were invited to perform two tasks on the wrist: Insertion of the scope through the 3-4 portal and the hook through the 6R portal, and visualization of the hook in the center of the imageNavigation through the wrist from radial to ulnar with probing and visualization of five predefined landmarksThe second task was repeated 10 times. The absolute force (F abs) and the direction of force were measured. The angle α is defined in the vertical plane, and the angle β in the horizontal plane. Results The median F abs used by novices remained below the force threshold as defined from the expert data (7.3 N). However, the direction of the applied forces by novices in both planes was not consistent with expert data and showed a wider range. Also, there was no improvement after more trials. Conclusion Our study suggests by the absence of a learning curve for the novices and a significant difference between novices and experts that novices can benefit from feedback on the magnitude and direction of forces to improve their performance. PMID:25077049

  7. Cuff width alters the amplitude envelope of wrist cuff pressure pulse waveforms

    International Nuclear Information System (INIS)

    The accuracy of noninvasive blood pressure (BP) measurement with any method is affected by cuff width. Measurement with a too narrow cuff overestimates BP and measurement with a too wide cuff underestimates BP. Automatic wrist cuff BP monitors use permanently attached narrow cuffs with bladders about 6 cm wide. Such narrow cuffs should result in under-cuffing for wrist circumferences larger than 15 cm. The objective of this qualitative study was to show that a narrow wrist cuff results in increased BP values when a cuff pulse amplitude ratio algorithm is used. According to the algorithm used in this study, systolic pressure (SBP) corresponds to the point of 50% of maximal amplitude; for diastolic pressure (DBP) the ratio is 70%. Data were acquired from 12 volunteers in the sitting position. The mean wrist circumference was 18 cm. The acquired cuff pulse data were used to compute SBP, mean pressure (MAP) and DBP. The mean values for a 6 cm cuff were SBP = 144 mmHg, MAP = 104 mmHg and DBP = 88 mmHg. The values for a 10 cm cuff were SBP = 128 mmHg, MAP = 93 mmHg and DBP = 78 mmHg. The reference BP values were SBP = 132 mmHg, MAP = 96 mmHg and DBP = 80 mmHg. All narrow (6 cm) cuff BP values were higher than wide (10 cm) cuff or reference BP values. The results indicate that wider wrist cuffs may be desirable for more accurate and reliable BP measurement with wrist monitors. (note)

  8. Scoring of synovial membrane hypertrophy and bone erosions by MR imaging in clinically active and inactive rheumatoid arthritis of the wrist

    DEFF Research Database (Denmark)

    Østergaard, Mikkel; Gideon, P; Sørensen, K;

    1995-01-01

    MRI-scores of synovial membrane hypertrophy and bone erosions of the RA-wrist are introduced. Gadolinium-DTPA enhanced magnetic resonance imaging (MRI) and conventional radiography (CR) of the wrist were performed in 16 patients with rheumatoid arthritis (RA) and 3 healthy controls. A MRI-score of...... MRI and CR with respect to bone erosions. Bone erosions were detected by MRI in 14 wrists in contrast to only 6 wrists by CR. In all patients the erosions were more numerous on MRI. The introduced methods may be useful quantitative measures of synovitis and early joint destruction in RA....... synovial membrane hypertrophy was obtained by summation of gradings of synovial hypertrophy in 6 regions of the wrist. The score was significantly higher in wrists with than in wrists without clinical signs of active arthritis. The score was 0 in all healthy controls. Each bone of the wrist was assessed by...

  9. On the abdominal pressure volume relationship

    OpenAIRE

    Mulier, Jan Paul; Dillemans, Bruno; Crombach, Mark; Missant, Carlo; Sels, Annabel

    2009-01-01

    Abstract: During insufflation of the abdomen to create a pneumoperitoneum for laparoscopy, both intra abdominal pressure and insufflated volume can be measured and are used to calculate the abdominal pressure-volume relationship. First, an accurate, linear relationship was identified using a mathematical model with an elastance, E, or its reciprocal the compliance C and with a pressure at zero volume, PV0. This function was stable and could be used to describe the abdominal characteristics of...

  10. [Internationalization and innovation of abdominal acupuncture].

    Science.gov (United States)

    Wang, Yong-Zhou

    2013-09-01

    Characteristics of abdominal acupuncture are analyzed through three aspects of inheriting and innovation, collaborated research as well as international visual field. It is pointed that abdominal acupuncture is based on clinical practice, focuses on enhancing the therapeutic effect and expending the clinical application. It also promots the thinking on how to recall the tradition and how to inherit tradition availably. The modern medical problems should be studied and innovation resolutions should be searched, which can help the internationalization and modernization of abdominal acupuncture.

  11. Combined pre-injection wrist and ankle MRI protocol and steroid joint injections in juvenile idiopathic arthritis

    Energy Technology Data Exchange (ETDEWEB)

    Kan, J.H. [Texas Children' s Hospital, Department of Radiology, Houston, TX (United States); Graham, T.B. [Monroe Carell Jr. Children' s Hospital at Vanderbilt, Department of Pediatric Rheumatology, Nashville, TN (United States)

    2011-10-15

    Precise localization of affected compartments of the wrist and ankle in children with an established diagnosis of juvenile idiopathic arthritis (JIA) is clinically challenging. The purpose of this paper is to describe our experience utilizing a pre-injection MRI protocol of the wrist and ankle for localizing disease activity followed by fluoroscopically guided joint injections in children with JIA. (orig.)

  12. Flexible and static wrist units in upper limb prosthesis users : functionality scores, user satisfaction and compensatory movements

    NARCIS (Netherlands)

    Deijs, Marieke; Bongers, R. M.; Ringeling-van Leusen, N. D. M.; van der Sluis, C. K.

    2016-01-01

    Background: The current study examines the relevance of prosthetic wrist movement to facilitate activities of daily living or to prevent overuse complaints. Prosthesis hands with wrist flexion/extension capabilities are commercially available, but research on the users' experiences with flexible wri

  13. Effects of Neoprene Wrist/Hand Splints on Handwriting for Students with Joint Hypermobility Syndrome: A Single System Design Study

    Science.gov (United States)

    Frohlich, Lauren; Wesley, Alison; Wallen, Margaret; Bundy, Anita

    2012-01-01

    Purpose: Pain associated with hypermobility of wrist and hand joints can contribute to decreased handwriting output. This study examined the effectiveness of a neoprene wrist/hand splint in reducing pain and increasing handwriting speed and endurance for students with joint hypermobility syndrome. Methods: Multiple baseline, single system design…

  14. Carpal tunnel syndrome: a case-control study evaluating its relationship with body mass index and hand and wrist measurements.

    Science.gov (United States)

    Farmer, J E; Davis, T R C

    2008-08-01

    This case-control study investigated the associations between the body mass index (BMI), hand and wrist measurements and carpal tunnel syndrome (CTS). The hands and wrists of 50 patients with CTS and 50 age- and sex-matched controls were measured. The right and left wrist indices (wrist depth/wrist width) were significantly greater in CTS patients (mean = 0.71. SD = 0.04) than in the controls (mean = 0.69 SD = 0.04). The hand index (hand length/palm width) and BMI were not significantly different in the two groups. The hand, but not the wrist, index was found to correlate with the BMI. These results provide some support for a causative association between wrist morphometry, as measured by the wrist index, and CTS, but this difference is too small to be of diagnostic value in clinical or epidemiological practice. The results could also suggest that the previously reported association between CTS and the hand index may be secondary to differences in the BMI.

  15. Effect of training on contractile and metabolic properties of wrist extensors in spinal cord-injured individuals

    DEFF Research Database (Denmark)

    Hartkopp, Andreas; Harridge, Stephen D R; Mizuno, Masao;

    2003-01-01

    Paretic human muscle rapidly loses strength and oxidative endurance, and electrical stimulation training may partly reverse this. We evaluated the effects of two training protocols on the contractile and metabolic properties of the wrist extensor in 12 C-5/6 tetraplegic individuals. The wrist...

  16. Active range of motion outcomes after reconstruction of burned wrist and hand deformities.

    Science.gov (United States)

    Afifi, Ahmed M; Mahboub, Tarek A; Ibrahim Fouad, Amr; Azari, Kodi; Khalil, Haitham H; McCarthy, James E

    2016-06-01

    This works aim is to evaluate the efficacy of skin grafts and flaps in reconstruction of post-burn hand and wrist deformities. A prospective study of 57 burn contractures of the wrist and dorsum of the hand was performed. Flaps were used only if there was a non-vascularized structure after contracture release, otherwise a skin graft was used. Active range of motion (ROM) was used to assess hand function. The extension deformity cohort uniformly underwent skin graft following contracture release with a mean improvement of 71 degrees (p6 months. Early release of burn contracture is advisable to avoid deep structure contracture.

  17. Variant course of extensor pollicis longus tendon in the second wrist extensor compartment.

    Science.gov (United States)

    Kim, Young Jun; Lee, Jae Hoon; Baek, Jong Hun

    2016-05-01

    Among the muscles involved in thumb movement, the extensor pollicis longus (EPL) tendon of the hand is considered the most consistent structure with the least variation among individuals. There have been a few reports regarding different types of supernumerary tendons; however, an abnormal course of the EPL tendon is extremely rare. We describe a case of a variant course of a single EPL tendon appearing in the second extensor compartment of the wrist. This case was observed incidentally during wrist surgery, and demonstrates a unique variation of tendon course, which has not been reported previously. The knowledge of this anatomic variation is helpful in surgical planning and for making accurate diagnoses. PMID:26253859

  18. Magnetic resonance imaging findings of extraskeletal mesenchymal chondrosarcoma of wrist: a case report

    Directory of Open Access Journals (Sweden)

    Aysin Pourbagher

    2016-06-01

    Full Text Available Extraskeletal mesenchymal chondrosarcomas (EMC are high grade malignant tumors that rarely involves wrist. Published reports about them are mostly based on conventional radiography, tomography and conventional magnetic resonance imaging (MRI findings. We did not recognize any report of dynamic-contrast enhanced MRI so far. Herein, we present dynamic contrast enhanced and Diffusion Weighted MRI findings of a case with extraskeletal mesenchymal chondrosarcoma of the wrist. In conclusion, EMC might show peripheral enhancement at early arterial phase and restricted diffusion on MRI. The knowledge of the imaging spectrum of the EMC might help us suggesting the diagnosis. [Cukurova Med J 2016; 41(2.000: 374-378

  19. Nerve Transfers for the Restoration of Wrist, Finger, and Thumb Extension After High Radial Nerve Injury.

    Science.gov (United States)

    Pet, Mitchell A; Lipira, Angelo B; Ko, Jason H

    2016-05-01

    High radial nerve injury is a common pattern of peripheral nerve injury most often associated with orthopedic trauma. Nerve transfers to the wrist and finger extensors, often from the median nerve, offer several advantages when compared to nerve repair or grafting and tendon transfer. In this article, we discuss the forearm anatomy pertinent to performing these nerve transfers and review the literature surrounding nerve transfers for wrist, finger, and thumb extension. A suggested algorithm for management of acute traumatic high radial nerve palsy is offered, and our preferred surgical technique for treatment of high radial nerve palsy is provided. PMID:27094891

  20. Carpal arch and median nerve changes during radioulnar wrist compression in carpal tunnel syndrome patients.

    Science.gov (United States)

    Marquardt, Tamara L; Evans, Peter J; Seitz, William H; Li, Zong-Ming

    2016-07-01

    The purpose of this study was to investigate the morphological changes of the carpal arch and median nerve during the application of radiounlarly directed compressive force across the wrist in patients with carpal tunnel syndrome. Radioulnar compressive forces of 10 N and 20 N were applied at the distal level of the carpal tunnel in 10 female patients diagnosed with carpal tunnel syndrome. Immediately prior to force application and after 3 min of application, ultrasound images of the distal carpal tunnel were obtained. It was found that applying force across the wrist decreased the carpal arch width (p 1234-1240, 2016. PMID:26662276

  1. EMPress: Practical Hand Gesture Classification with Wrist-Mounted EMG and Pressure Sensing

    DEFF Research Database (Denmark)

    McIntosh, Jess; McNeill, Charlie; Fraser, Mike;

    2016-01-01

    Practical wearable gesture tracking requires that sensors align with existing ergonomic device forms. We show that combining EMG and pressure data sensed only at the wrist can support accurate classification of hand gestures. A pilot study with unintended EMG electrode pressure variability led...... to exploration of the approach in greater depth. The EMPress technique senses both finger movements and rotations around the wrist and forearm, covering a wide range of gestures, with an overall 10-fold cross validation classification accuracy of 96%. We show that EMG is especially suited to sensing finger...

  2. Constant angular velocity of the wrist during the lifting of a sphere.

    OpenAIRE

    Chappell, Paul; Metcalf, Cheryl; Burridge, Jane; Yule, Victoria; Pickering, R.M.

    2010-01-01

    The primary objective of the experiments was to investigate the wrist motion of a person while they were carrying out a prehensile task from a clinical hand function test. A sixcamera movement system was used to observe the wrist motion of 10 participants. A very light sphere and a heavy sphere were used in the experiments to study any mass effects. While seated at a table, a participant moved a sphere over a small obstacle using their dominant hand. The participants were observed to move the...

  3. Capitolunate arthrodesis maintaining carpal height for the treatment of SNAC wrist.

    Science.gov (United States)

    Giannikas, D; Dimitrios, G; Karageorgos, A; Athanasios, K; Karabasi, A; Ageliki, K; Syggelos, S; Spiridon, S

    2010-03-01

    The clinical and radiological results of a modified midcarpal fusion technique for scaphoid nonunion advance collapse were retrospectively studied in eight patients. All had partial resection of the proximal part of the fractured scaphoid, limited radial styloidectomy, scaphocapitate and lunocapitate arthrodesis, using a block of iliac crest graft to maintain carpal height. All united without complications and wrist motion, grip strength and carpal height were improved postoperatively. The modified Mayo wrist score at follow-up was 70%. Three patients continued to have some pain and one patient had a poor result.

  4. [Carpal tunnel syndrome and "trigger wrist" revealing a tendinous sheath fibroma].

    Science.gov (United States)

    Benhima, M A; Ait Essi, F; Abkari, I; Najeb, Y; Fikry, T

    2014-02-01

    The tendinous sheath fibroma (TSF) is a rare benign tumor, exceptionally responsible for carpal tunnel syndrome and "trigger" wrist: we found this association less than ten times in the English and French literature. We report the case of a 63-year-old right-handed carpenter who featured a triggering phenomenon of the right wrist during the flexion-extension movements and compression of the median nerve at the carpal tunnel, secondary to a TSF of the flexor digitorum superficialis. The diagnosis was suspected at the sonography and MRI, the tumor was excised and proven histologically to be a TSF. One year later, the patient remained free of symptoms.

  5. Myoelectric Signals from Paretic Wrist Extensor Controlling Electrical Stimulation of the Same Muscle

    DEFF Research Database (Denmark)

    Rune, Thorsen; Fin, Biering-Sørensen; Hansen, Steffen Duus;

    1996-01-01

    A device for enhancement of the grip in C5/6 spinal cord lesioned tetraplegics is under development. It uses the myoelectric signal from the paretic wrist extensor for control of electrical stimulation of the same muscle. The tetraplegics shall with the device be able to obtain a passive grip bet...... between the thumb an the index finger by extension of the wrist. Surface electrodes are used for myoelectric recording and stimulation. Main problems are filtering of the recorded signal and stimulation. Solutions to these problems are addressed and discussed....

  6. Abdominal migraine in childhood: a review

    Directory of Open Access Journals (Sweden)

    Scicchitano B

    2014-08-01

    Full Text Available Beatrice Scicchitano,1 Gareth Humphreys,1 Sally G Mitton,2 Thiagarajan Jaiganesh1 1Children's Emergency Department, 2Department of Paediatric Gastroenterology, St Georges Hospital, St Georges Healthcare NHS Trust, Tooting, London, United Kingdom Abstract: The childhood condition of abdominal migraine has been described under many different synonyms, including "abdominal epilepsy", "recurrent abdominal pain", "cyclical vomiting syndrome", and "functional gastrointestinal disorder". In the early literature, abdominal migraine is included in the "childhood periodic syndrome", first described by Wyllie and Schlesinger in 1933. Abdominal migraine has emerged over the last century as a diagnostic entity in its own right thanks to the development of well defined diagnostic criteria and its recent inclusion in the International Headache Society's Classification of Headache disorders. Despite this progress, little is known about the pathophysiology of the condition, and the treatment options are poorly defined. Here we summarize the recent literature, with particular focus on establishing the diagnosis of abdominal migraine and its pathophysiology, and suggest an approach to management. Keywords: abdominal migraine, recurrent abdominal pain, abdominal epilepsy, cyclical vomiting

  7. An Elastica Arm Scale

    CERN Document Server

    Bosi, F; Corso, F Dal; Bigoni, D

    2015-01-01

    The concept of 'deformable arm scale' (completely different from a traditional rigid arm balance) is theoretically introduced and experimentally validated. The idea is not intuitive, but is the result of nonlinear equilibrium kinematics of rods inducing configurational forces, so that deflection of the arms becomes necessary for the equilibrium, which would be impossible for a rigid system. In particular, the rigid arms of usual scales are replaced by a flexible elastic lamina, free of sliding in a frictionless and inclined sliding sleeve, which can reach a unique equilibrium configuration when two vertical dead loads are applied. Prototypes realized to demonstrate the feasibility of the system show a high accuracy in the measure of load within a certain range of use. It is finally shown that the presented results are strongly related to snaking of confined beams, with implications on locomotion of serpents, plumbing, and smart oil drilling.

  8. ARM7-kehityskortti

    OpenAIRE

    Kukkonen, Henri

    2006-01-01

    Tämän opinnäytetyön tarkoituksena oli suunnitella ja toteuttaa ARM-mikro-ohjain pohjainen kehityskortti. Kortin tuli olla soveltuva ARM-ohjelmoinnin opettamiseen. Työssä myös selvitettiin ARM-mikro-ohjaimen ohjelmointiympäristön käyttöönotto. Teoriaosassa käsitellään ARM-arkkitehtuuria, työssä käytettyjen Atmelin AT91R40008-mikro-ohjaimen sekä Philipsin LPC2105-mikro-ohjaimen ominaisuuksia. Erityisesti työssä keskitytään kehityskorttien suunnitteluun. Kehityskortin vaatimuksina oli, että se ...

  9. Quantitative assessment of the synovial membrane in the rheumatoid wrist: an easily obtained MRI score reflects the synovial volume

    DEFF Research Database (Denmark)

    Østergaard, Mikkel; Hansen, M; Stoltenberg, M;

    1996-01-01

    Determination of the synovial membrane volume in the rheumatoid arthritis (RA) wrist by gadolinium-DTPA-enhanced MRI is introduced. Moreover, dynamic imaging and an MRI score of synovial hypertrophy, based on gradings in six regions, are evaluated as substitutes of the time-consuming volume...... swelling and/or joint tenderness than in wrists without these signs (Mann-Whitney, both P < 0.05). Suboptimal slice selection made dynamic imaging uninformative. MRI allows quantification of the synovial volume in the rheumatoid wrist. The volume is related to clinical signs of inflammation, but may also...... calculations. Twenty-six RA wrists were examined. Synovial membrane volumes ranged from 1 to 20 ml (median 9 ml). Synovial hypertrophy scores were highly correlated to synovial volumes (Spearman r = 0.88; P < 10(-8) for uncorrelated values). The volumes and scores were significantly higher in wrists with joint...

  10. MR angiography in abdominal neoplasms

    Energy Technology Data Exchange (ETDEWEB)

    Squillaci, E. [Dept. of Radiology, Rome-2 Univ., Hospital S. Eugenio, Rome (Italy); Crecco, M. [Dept. of Radiology, Cancer Research Inst. (Regina Elena), Rome (Italy); Grandinetti, M.L. [Dept. of Radiology, Cancer Research Inst. (Regina Elena), Rome (Italy); Maspes, F. [Dept. of Radiology, Rome-2 Univ., Hospital S. Eugenio, Rome (Italy); Lo Presti, G. [Dept. of Radiology, Rome-2 Univ., Hospital S. Eugenio, Rome (Italy); Squillaci, S. [Dept. of Radiology, Cancer Research Inst. (Regina Elena), Rome (Italy); Simonetti, G. [Dept. of Radiology, Rome-2 Univ., Hospital S. Eugenio, Rome (Italy)

    1994-10-01

    The role of magnetic resonance angiography (MRA) in the evaluation of vascular involvement was studied in 55 patients with abdominal neoplasms. A 2-D time-of-flight (TOF) technique was used in all patients. All patients underwent CT and MR examinations before MRA. Also, MR angiograms were compared with digital subtraction angiography in 22 cases, with Doppler US in 13 cases, and with surgical findings in 20 cases. In all patients with liver neoplasms (n=29) MRA demonstrated the absence of flow in the infiltrated segments. Pericapsular neovascularization was observed in 12 patients. Portal vein involvement was correctly detected in 27 patients. In all cases MRA demonstrated in relationship between the tumor and venous structures. Portosystemic shunts were visualized in 20 of 21 patients with portal hypertension. Vena cava thrombosis (3 cases), compression (5 cases), and displacement (2 cases) were correctly demonstrated. In renal (n=6) and adrenal gland (n=3) tumors renal vein compression was correctly detected in 2 cases, displacement in 1 case, and thrombosis in 3 cases, with only 1 false-positive finding. In 7 patients with pancreatic tumors MRA demonstrated splenic vein thrombosis in 2 cases and compression in 2 cases, with one false-positive finding. Our results indicate that MRA provides precise information regarding venous vascular involvement in abdominal neoplasms, but preoperative arterial mapping is still problematic. (orig.)

  11. The Neonate with Abdominal Mass

    Directory of Open Access Journals (Sweden)

    M. Bajoghli

    2008-01-01

    Full Text Available Neonatal abdominal masses have broad spectrum of pathology, ranging from small lesions found incidentally to large masses occupying the entire of peritoneal cavity. These tumors are benign to malignant, and from unilocular cysts to complex solid lesions. Many of these lesions identified and will treat before delivery. Others are discovered during routine examination. These lesions may be life threatening, or cause persistent morbidity. Some of these have no sequel."nDiagnosis began with history. Characteristic of the mass which must be note include location, size, shape, texture, mobility and tenderness. Other findings should be in mind to find out nature of mass, for example hypoplasia of chest wall with oligohydramnios due to GU tract obstruction (potter sequwnce, a bulging hymen due to hydrometrocolpus, skin metastasis due to neuroblastoma. Radiography is the next step that shows organomegaly and calcification. Next step is US which is an excellent screening tool. CT and MRI are occasionally indicated."nThe purpose of this presentation is to review the diagnosis of abdominal masses in neonates.

  12. Hello to Arms

    Science.gov (United States)

    2005-01-01

    This image highlights the hidden spiral arms (blue) that were discovered around the nearby galaxy NGC 4625 by the ultraviolet eyes of NASA's Galaxy Evolution Explorer. The image is composed of ultraviolet and visible-light data, from the Galaxy Evolution Explorer and the California Institute of Technology's Digitized Sky Survey, respectively. Near-ultraviolet light is colored green; far-ultraviolet light is colored blue; and optical light is colored red. As the image demonstrates, the lengthy spiral arms are nearly invisible when viewed in optical light while bright in ultraviolet. This is because they are bustling with hot, newborn stars that radiate primarily ultraviolet light. The youthful arms are also very long, stretching out to a distance four times the size of the galaxy's core. They are part of the largest ultraviolet galactic disk discovered so far. Located 31 million light-years away in the constellation Canes Venatici, NGC 4625 is the closest galaxy ever seen with such a young halo of arms. It is slightly smaller than our Milky Way, both in size and mass. However, the fact that this galaxy's disk is forming stars very actively suggests that it might evolve into a more massive and mature galaxy resembling our own. The armless companion galaxy seen below NGC 4625 is called NGC 4618. Astronomers do not know why it lacks arms but speculate that it may have triggered the development of arms in NGC 4625.

  13. Uso da peritoneostomia na sepse abdominal Laparostomy in abdominal sepsis

    Directory of Open Access Journals (Sweden)

    Juvenal da Rocha Torres Neto

    2007-09-01

    Full Text Available Dentre as modalidades terapêuticas da sepse abdominal, a peritoneostomia tem papel decisivo permitindo explorações e lavagens da cavidade de forma facilitada. Observamos pacientes com diagnóstico clínico de sepse abdominal internados no Serviço de Coloproctologia do Hospital Universitário da Universidade Federal de Sergipe, e que foram submetidos a peritoneostomia de janeiro de 2004 a janeiro de 2006. Foram avaliados quanto ao diagnóstico primário e secundário, tipo de peritonite secundária, antibioticoterapia, esquema de lavagens, tempo de peritoneostomia, complicações e desfecho. Estudamos 12 pacientes, com idade de 15 a 57, média de 39,3 anos. Diagnóstico primário: abdome agudo inflamatório em 6(50%, abdome agudo obstrutivo em 2(16,7%, abdome agudo perfurativo em 2(16,7%, fístula enterocutânea em 1(8,3% e abscesso intra-cavitário em 1(8,3%. Diagnóstico secundário: perfuração de cólon em 4(33,3%, abscessos intra-cavitários em 3(25%, deiscências de anastomoses em 3(25%, 1(8,3% com tumor perfurado de sigmóide e 1(8,3% com necrose de cólon abaixado. Peritonite fecal em 10(83,3% e purulenta em 2(16,7%. A antibioticoterapia teve duração média de 19 dias. Lavagens de demanda em 6(50%, programadas em 4(33,3% e regime misto em 2(16,7%. O tempo médio de peritoneostomia foi de 10,9 dias (1-36. Como complicações: evisceração em 2(16,7% e fistulização em 1(8,3%. Quatro pacientes evoluíram com óbito.Among the therapeutics approach form of abdominal sepsis, the laparostomy has a decisive role allowing cavity explorations and lavages in an easier way. We study patients with abdominal sepsis diagnoses admitted to our surgical service of Coloproctology form Sergipe´s Federal University Hospital who underwent a Bogotá Bag laparostomy associated or not with polypropylene mesh from January 2004 to January 2006. These patients were assessed as: first and second diagnosis; secondary peritonitis type; antibiotic

  14. Accurate walking and running speed estimation using wrist inertial data.

    Science.gov (United States)

    Bertschi, M; Celka, P; Delgado-Gonzalo, R; Lemay, M; Calvo, E M; Grossenbacher, O; Renevey, Ph

    2015-08-01

    In this work, we present an accelerometry-based device for robust running speed estimation integrated into a watch-like device. The estimation is based on inertial data processing, which consists in applying a leg-and-arm dynamic motion model to 3D accelerometer signals. This motion model requires a calibration procedure that can be done either on a known distance or on a constant speed period. The protocol includes walking and running speeds between 1.8km/h and 19.8km/h. Preliminary results based on eleven subjects are characterized by unbiased estimations with 2(nd) and 3(rd) quartiles of the relative error dispersion in the interval ±5%. These results are comparable to accuracies obtained with classical foot pod devices. PMID:26738169

  15. Actinomycosis mimicking abdominal neoplasm. Case report

    DEFF Research Database (Denmark)

    Waaddegaard, P; Dziegiel, Morten Hanefeld

    1988-01-01

    In a patient with a 6-month history of nonspecific abdominal complaints, preoperative examination indicated malignant disease involving the right ovary, rectum and sigmoid, but laparotomy revealed abdominal actinomycosis. Removal of the ovary and low anterior colonic resection followed by penicil...

  16. Abdominal Wall Modification for the Difficult Ostomy

    OpenAIRE

    Beck, David E.

    2008-01-01

    A select group of patients with major stomal problems may benefit from operative modification of the abdominal wall. Options may include a modified abdominoplasty (abdominal wall contouring), localized flaps, or liposuction. Although frequently successful, these techniques have the potential for significant morbidity.

  17. Live secondary abdominal pregnancy- by chance!!

    Directory of Open Access Journals (Sweden)

    Akanksha Sood

    2013-04-01

    Full Text Available Abdominal pregnancy though rare but is a life threatening situation, if not recognized and managed properly. We are hereby presenting a rare successful outcome in a case of ruptured live Secondary Abdominal pregnancy with placental implants over intestines. [Int J Reprod Contracept Obstet Gynecol 2013; 2(2.000: 251-253

  18. Hypoxia inhibits abdominal expiratory nerve activity.

    Science.gov (United States)

    Fregosi, R F; Knuth, S L; Ward, D K; Bartlett, D

    1987-07-01

    Our purpose was to examine the influence of steady-state changes in chemical stimuli, as well as discrete peripheral chemoreceptor stimulation, on abdominal expiratory motor activity. In decerebrate, paralyzed, vagotomized, and ventilated cats that had bilateral pneumothoraces, we recorded efferent activity from a phrenic nerve and from an abdominal nerve (cranial iliohypogastric nerve, L1). All cats showed phasic expiratory abdominal nerve discharge at normocapnia [end-tidal PCO2 38 +/- 2 Torr], but small doses (2-6 mg/kg) of pentobarbital sodium markedly depressed this activity. Hyperoxic hypercapnia consistently enhanced abdominal expiratory activity and shortened the burst duration. Isocapnic hypoxia caused inhibition of abdominal nerve discharge in 11 of 13 cats. Carotid sinus nerve denervation (3 cats) exacerbated the hypoxic depression of abdominal nerve activity and depressed phrenic motor output. Stimulation of peripheral chemoreceptors with NaCN increased abdominal nerve discharge in 7 of 10 cats, although 2 cats exhibited marked inhibition. Four cats with intact neuraxis, but anesthetized with ketamine, yielded qualitatively similar results. We conclude that when cats are subjected to steady-state chemical stimuli in isolation (no interference from proprioceptive inputs), hypercapnia potentiates, but hypoxia attenuates, abdominal expiratory nerve activity. Mechanisms to explain the selective inhibition of expiratory motor activity by hypoxia are proposed, and physiological implications are discussed. PMID:3624126

  19. Pediatric Abdominal Pain: An Emergency Medicine Perspective.

    Science.gov (United States)

    Smith, Jeremiah; Fox, Sean M

    2016-05-01

    Abdominal pain is a common complaint that leads to pediatric patients seeking emergency care. The emergency care provider has the arduous task of determining which child likely has a benign cause and not missing the devastating condition that needs emergent attention. This article reviews common benign causes of abdominal pain as well as some of the cannot-miss emergent causes. PMID:27133248

  20. Thoraco-abdominal aortic aneurysm branched repair

    NARCIS (Netherlands)

    Verhoeven, E. L. G.; Tielliu, I. F. J.; Ferreira, M.; Zipfel, B.; Adam, D. J.

    2010-01-01

    Open thoraco-abdominal aortic aneurysm repair is a demanding procedure with high impact on the patient and the operating team. Results from expert centres show mortality rates between 3-21%, with extensive morbidity including renal failure and paraplegia. Endovascular repair of abdominal aortic aneu

  1. Puerperal endometritis after abdominal twin delivery.

    Science.gov (United States)

    Suonio, S; Huttunen, M

    1994-04-01

    The infectious complications of 122 consecutive abdominal twin deliveries over the period 1984-1989 were analyzed in a prospective clinical study, comparing them with 761 singleton abdominal deliveries over the period 1984-1986. The incidence of endometritis was nearly three-fold after twin deliveries and the incidence of abdominal wound infections nearly two-fold compared with singleton abdominal pregnancies (13.1/4.7% and 5.6/3.0%). The risk of amnionitis was increased ten-fold, 6 hours after rupture of the membranes in abdominal twin delivery, but no connection was found between amnionitis and endometritis, as in singleton abdominal deliveries. Multiple regression analysis indicated only two risk factors as regards puerperal endometritis after abdominal twin delivery: age under 25 years (odds ratio 6.9, 95% confidence limits 1.9-24.8), an association also seen in singleton abdominal deliveries, and a period of more than 6 hours from rupture of membranes to delivery (odds ratio 7.8, 95% confidence limits 2.1-28.5). Multiple pregnancy appears to be associated with an increased risk of endometritis. The etiological factors remain unknown, but a large placental bed and/or immunological factors may be implicated. PMID:8160537

  2. The distally-based island ulnar artery perforator flap for wrist defects

    Directory of Open Access Journals (Sweden)

    Karki Durga

    2007-01-01

    Full Text Available Background: Reconstruction of soft tissue defects around the wrist with exposed tendons, joints, nerves and bone represents a challenge to plastic surgeons, and such defects necessitate flap coverage to preserve hand functions and to protect its vital structures. We evaluated the use of a distally-based island ulnar artery perforator flap in patients with volar soft tissue defects around the wrist. Materials and Methods: Between June 2004 and June 2006, seven patients of soft tissue defects on the volar aspect of the wrist underwent distally-based island ulnar artery perforator flap. Out of seven patients, five were male and two patients were female. This flap was used in the reconstruction of the post road traffic accident defects in four patients and post electric burn defects in three patients. Flap was raised on one or two perforators and was rotated to 180°. Results: All flaps survived completely. Donor sites were closed primarily without donor site morbidity. Conclusion: The distally-based island Ulnar artery perforator flap is convenient, reliable, easy to manage and is a single-stage technique for reconstructing soft tissue defects of the volar aspect of the wrist. Early use of this flap allows preservation of vital structures, decreases morbidity and allows for early rehabilitation.

  3. MRI of the hand and wrist joint of climbers. Imaging of lesions and overstrain injury

    International Nuclear Information System (INIS)

    The hands and wrists of 20 top-level rock climbers with sports injuries and overstress abnormalities were compared with the hands and wrists of 10 normal volunteers. They were all studied with MR imaging at 1.5 T. The imaging protocol included spin-echo and gradient-echo sequences with 1- to 5-mm-thick contiguous slices in the axial, coronal and/or sagittal planes, depending on the location and nature of the suspected injury. Typical hand and wrist lesions depicted with MRI in climbers consisted of annular ligament tears, lesions of the flexor tendons, tenosynovitis, ganglion cysts, joint effusion and functional carpal tunnel syndrome. The MRI findings on these abnormalities were compared to normal findings and those with ultrasound and plain films. In addition, hypertrophic changes in the muscles, tendons, ligaments, and bones of top-level rock climbers were assessed morphometrically. MRI proved to be the superior imaging modality in the diagnosis of sports injuries and overstress abnormalities of the hand the wrist in rock-climbing athletes. (orig.)

  4. Dynamic contrast-enhanced magnetic resonance imaging of the wrist in early arthritis

    Directory of Open Access Journals (Sweden)

    M.A. Cimmino

    2011-09-01

    Full Text Available Objectives: MRI has been proposed as the imaging method of choice to evaluate the long-term outcome in patients with early arthritis. The role of dynamic MRI, performed at presentation, in predicting the outcome of patients with early arthritis has been addressed in the present study. Methods: 39 patients with early arthritis, involving at least one wrist, were studied with clinical visits and laboratory investigations, every 3 months. Dynamic MRI was performed with a low-field (0.2T, extremity-dedicated machine (Artoscan, Esaote, Genova, Italy equipped with a permanent magnet and with a dedicated hand and wrist coil. During the intravenous injection of Gd-DTPA, twenty consecutive fast images of 3 slices of the wrist were acquired. The synovial contrast enhancement ratio was calculated both as rate of early enhancement (REE per second during the first 55” and as relative enhancement (RE at t seconds. Results: In our cohort of patients, REE and RE were significantly lower than those observed in a historical cohort of 36 patients with active rheumatoid arthritis. In univariate analysis, low RE predicted complete remission of arthritis. In multivariate analysis, fulfillment of RA criteria during follow-up was predicted by high RE. The need for immunosuppressive treatment at the end of follow-up was predicted by both low RE and high REE. Conclusions: Dynamic MRI may be used to predict several outcomes of early arthritis involving the wrist

  5. Elimination of hand-wrist radiographs for maturity assessment in children needing orthodontic therapy

    International Nuclear Information System (INIS)

    Our aim was to evaluate the validity of the cervical vertebra maturation (CVM) method as an indicator of skeletal age during the circumpubertal period by correlating the CVM method with the hand-wrist maturation (HWM) method in an attempt to eliminate the need for hand-wrist radiographs for maturity assessment. Hand-wrist and lateral cephalometric radiographs of 400 Chinese were randomly selected. The age for girls was between 10 years and 15 years and for boys it was between 12 years and 17 years, so that they were within the circumpubertal period. The CVM was assessed by a method developed by Baccetti and co-workers, whereas hand-wrist maturation was assessed by Fishman's method. The CVM was significantly correlated with HWM skeletal age. (Spearman's r boys 0.9206, girls = 0.9363). All the patients in cervical vertebra stage 3 (CVS3) of CVM corresponded to skeletal maturation indicator 2 (SMI2) or SMI3 stages of HWM (around the peak of the growth spurt). The method error was insignificant. CVM is a valid indicator of skeletal growth during the circumpubertal period. This work will provide dental practitioners with information on jaw growth modification therapy. (orig.)

  6. Psychometric properties of two questionnaires in the context of total wrist arthroplasty

    DEFF Research Database (Denmark)

    Boeckstyns, Michel E H; Merser, Søren

    2014-01-01

    evaluated the Patient-rated Wrist Evaluation. RESULTS: Internal consistency and reproducibility were very high (Cronbach's alpha 0.96/0.97; Spearman's rho 0.90/ 0.91; intraclass coefficient 0.91/0.92), and there were no floor or ceiling effects. The responsiveness of the QuickDASH was high (standardised...

  7. A preliminary investigation of trunk and wrist kinematics when using drivers with different shaft properties.

    Science.gov (United States)

    Joyce, Christopher; Burnett, Angus; Cochrane, Jodie; Reyes, Alvaro

    2016-01-01

    It is unknown whether skilled golfers will modify their kinematics when using drivers of different shaft properties. This study aimed to firstly determine if golf swing kinematics and swing parameters and related launch conditions differed when using modified drivers, then secondly, determine which kinematics were associated with clubhead speed. Twenty high level amateur male golfers (M ± SD: handicap = 1.9 ± 1.9 score) had their three-dimensional (3D) trunk and wrist kinematics collected for two driver trials. Swing parameters and related launch conditions were collected using a launch monitor. A one-way repeated measures ANOVA revealed significant (p ≤ 0.003) between driver differences; specifically, faster trunk axial rotation velocity and an early wrist release for the low kick point driver. Launch angle was shown to be 2° lower for the high kick point driver. Regression models for both drivers explained a significant amount of variance (60-67%) in clubhead speed. Wrist kinematics were most associated with clubhead speed, indicating the importance of the wrists in producing clubhead speed regardless of driver shaft properties. PMID:27075379

  8. Effects of circumferential rigid wrist orthoses in rehabilitation of patients with radius fracture at typical site

    Directory of Open Access Journals (Sweden)

    Đurović Aleksandar

    2005-01-01

    Full Text Available Background. The use of orthoses is a questionable rehabilitation method for patients with the distal radius fracture at typical site. The aim of this study was to compare the effects of the rehabilitation on patients with radius fracture at the typical site, who wore circumferential static wrist orthoses, with those who did not wear them. Methods. Thirty patients were divided into 3 equal groups, 2 experimental groups, and 1 control group. The patients in the experimental groups were given the rehabilitation program of wearing serially manufactured (off-the-shelf, as well as custom-fit orthoses. Those in the control group did not wear wrist orthoses. Evaluation parameters were pain, edema, the range of the wrist motion, the quality of cylindrical, spherical, and pinch-spherical grasp, the strength of pinch and hand grasp, and patient's assessment of the effects of rehabilitation. Results. No significant difference in the effects of rehabilitation on the patients in experimental groups as opposed to control group was found. Patients in the first experimental group, and in control group were more satisfied with the effects of rehabilitation, as opposed to the patients in the second experimental group (p<0,05. Conclusion. The effects of circumferential static wrist orthoses in the rehabilitation of patients with distal radius fracture at the typical site were not clinically significant. There was no significant difference between the custom and off-the-shelf orthoses.

  9. 78 FR 44625 - Proposed Information Collection (Wrist Conditions Disability Benefits Questionnaire) Activity...

    Science.gov (United States)

    2013-07-24

    ... 17, 2013 (78 FR 36307), inviting the public to comment on a proposed information collection titled ``Wrist Conditions Disability Benefits Questionnaire, VA Form 21-0960M-16.'' On June 18, 2013 (78 FR 36643... corrects that error by withdrawing the FR notice that published on June 18, 2013 (FR Doc 2013-14412)....

  10. Detection of generalized tonic-clonic seizures by a wireless wrist accelerometer

    DEFF Research Database (Denmark)

    Beniczky, S.; Hjalgrim, Helle; Polster, T.;

    2013-01-01

    Our objective was to assess the clinical reliability of a wrist-worn, wireless accelerometer sensor for detecting generalized tonic-clonic seizures (GTCS). Seventy-three consecutive patients (age 6-68 years; median 37 years) at risk of having GTCS and who were admitted to the long-term video-elec...

  11. Detection of In Vivo Dynamic 3-D Motion Patterns in the Wrist Joint

    NARCIS (Netherlands)

    B. Carelsen; R. Jonges; S.D. Strackee; M. Maas; P. van Kemenade; C.A. Grimbergen; M. van Herk; G.J. Streekstra

    2009-01-01

    We present a method for measurement dynamic in vivo carpal motion patterns. The method consists of a 4-D rotational X-ray (RX) with improved image quality and image processing for accurate detection in vivo wrist motion measurements. Dynamic 3-D imaging yields a number of volume reconstructions of t

  12. Low Level Laser Therapy (Lllt) for Chronic Joint Pain of the Elbow, Wrist and Fingers

    OpenAIRE

    Okuni, Ikuko; Ushigome, Nobuyuki; HARADA, Takashi; Ohshiro, Toshio; Musya, Yoshiro; Sekiguchi, Masayuki

    2012-01-01

    Background and Aims: In previous studies, we successfully applied Low Level Laser Therapy (LLLT) in patients with non-specific chronic pain of the shoulder joint and lower back. The purpose of the present study was to assess the effectiveness of LLLT for chronic joint pain of the elbow, wrist, and fingers.

  13. Incidentaloma at Radial Artery Forearm Free Flap Harvest: An Occult Volar Wrist Ganglion

    OpenAIRE

    Nambi, G.I.; M Dhiwakar

    2012-01-01

    Occult volar wrist ganglion originating from radioscaphoid interval and having adherence to flexor carpi radialis tendon [Fcr] and radial artery is an uncommon occurrence. We report such a case which was occult and asymptomatic during pre-operative assessment and presented as an incidentaloma during radial artery forearm free flap harvest for oral cancer reconstruction.

  14. Role of Scaphoid in the Abduction and Adduction Movements of Wrist Joint

    Directory of Open Access Journals (Sweden)

    Sadik I Shaikh

    2013-06-01

    Full Text Available Background: Being a carpal bone scaphoid has an important role in wrist movements. Wrist joint is a synovial modified ellipsoid joint where movements like flexion, extension and adduction, abduction take place around two axes (transverse and antero-posterior. These movements at the wrist joint are associated with considerable range of movements at the mid carpal joint, as same group of muscles act on both of these joints. Methodology: A study has been done amongst 120 persons at the tertiary care hospital during the period from 2006-07 to detect the important movements of scaphoid bone specially during the abduction and adduction of wrist joint (which occur in association with the intercarpal joints and also to detect whether such movements have any speciality in the population. Results: In fully abducted position, it was 45o among 53.3% subjects and the average among all the subjects was 60o. So, the degree of abduction was 30o. The extent of movement was more in adduction (ie, 1.90 cm - 1.03 cm = 0.87 cm than in abduction (ie, 1.03 cm - 0.72 cm = 0.31cm. Conclusion: It was found in this study that the scaphoid acts as a link bone between the two rows of carpal bones and prevents the buckling of midcarpal joint especially of the capitato- lunate joint interface. [Natl J Med Res 2013; 3(3.000: 253-256

  15. The paediatric wrist revisited - findings of bony depressions in healthy children on radiographs compared to MRI

    Energy Technology Data Exchange (ETDEWEB)

    Avenarius, Derk M.F.; Eldevik, Petter [University Hospital North Norway, Department of Radiology, Tromsoe (Norway); Ording Mueller, Lil-Sofie [University Hospital North Norway, Department of Radiology, Tromsoe (Norway); Great Ormond Street Hospital for Children, Department of Radiology, London (United Kingdom); Owens, Catherine M. [Great Ormond Street Hospital for Children, Department of Radiology, London (United Kingdom); University College London, Institute of Child Health, London (United Kingdom); Rosendahl, Karen [Haukeland University Hospital, Department of Radiology, Bergen (Norway); University of Bergen, Department of Surgical Sciences, Bergen (Norway); Great Ormond Street Hospital for Children, Department of Radiology, London (United Kingdom)

    2012-07-15

    The presence of erosions is used for diagnosis and monitoring of disease activity in juvenile idiopathic arthritis (JIA). Assessment of carpal bone erosions in children is challenging due to lack of normal references. To define normal appearances of bony depressions in the wrist on radiographs and MRI. MRI and radiography of the wrist were performed in 88 healthy children, 5-15 years of age. We assessed the number of bony depressions within the carpals/proximal metacarpals on both modalities, separately and combined. A total of 75 carpal depressions were identified on radiography compared to 715 on MRI. The number of bony depressions identified radiographically showed no statistically significant difference across age-groups. Within the metacarpals, there was no significant difference between bony depressions identified by MRI or radiography, except at the bases of the second metacarpal. Bony depressions that resemble erosions are normal findings in the wrist in children. MRI identifies more depressions than radiographs in the carpus. Some bony depressions occur at typical locations and should be accounted for when assessing the wrist in JIA to avoid overstaging. (orig.)

  16. Post-traumatic Median Nerve Neuroma in Wrist. A Case Report and brief review of Literature

    Directory of Open Access Journals (Sweden)

    Ahmet Aslan

    2013-07-01

    Full Text Available Introduction: Distal median nerve masses may be developed post-traumatic or non-traumatic. In this paper, we aim to present a 52 year old female case with a postraumatic neuroma of the median nerve in the left wrist. Case Report: A 52-year-old female patient had accidental incised wound over her left wrist which was primarily sutured. She presented 6 months later with unrelieved pain and growing swelling at the wrist. USG showed solid mass of size 2×3 cms. Intraoperatively the mass was seen to arise from medial nerve and careful excision was done protecting the nerve. At one year follow up the patient is relived of her symptoms with no sensorimotor deficit. Conclusion: Post traumatic neuroma present as unrelieved pain and progressive swelling. A high index of suspicion should be kept in cases of wound that are primarily sutured over an area with superficial nerves. Careful excision of the lesion is very effective in relieving patients symptoms Keywords: Neuroma, wrist, median nerve, nerve ınjury.

  17. Sonographic Wrist Measurements and Detection of Anatomical Features in Carpal Tunnel Syndrome

    Directory of Open Access Journals (Sweden)

    Esther Vögelin

    2014-01-01

    Full Text Available Introduction. This study compares anatomical findings at wrist level in patients with known carpal tunnel syndrome (CTS and controls by ultrasonography (US. Material and Methods. Wrist-US investigations of 28 consecutive patients with 38 diagnosed, idiopathic CTS were compared to 49 healthy volunteers without history of CTS. Internal wrists dimensions, the presence of flexor muscle bellies in the carpal tunnel, and cross-sectional area of the median nerve were analyzed. The findings were correlated to gender, age, and BMI. Results. US demonstrated a square internal carpal tunnel configuration in CTS patients compared to controls (P<0.001. Patients with CTS showed a trend towards the presence of flexor muscles bellies in the carpal tunnel (odds ratio 1.77, 95% CI 0.337–8.33. CTS was present in women with higher BMI (P=0.015. Conclusion. US allowed detection of specific anatomical features at wrist level in CTS patients. This observation may enable—following confirmation in larger prospective studies—risk evaluation for CTS development.

  18. Elimination of hand-wrist radiographs for maturity assessment in children needing orthodontic therapy

    Energy Technology Data Exchange (ETDEWEB)

    Al Khal, Hessa A.; Wong, Ricky W.K.; Rabie, A.B.M. [University of Hong Kong, Orthodontics, Faculty of Dentistry, Prince Philip Dental Hospital, Hong Kong (China)

    2008-03-15

    Our aim was to evaluate the validity of the cervical vertebra maturation (CVM) method as an indicator of skeletal age during the circumpubertal period by correlating the CVM method with the hand-wrist maturation (HWM) method in an attempt to eliminate the need for hand-wrist radiographs for maturity assessment. Hand-wrist and lateral cephalometric radiographs of 400 Chinese were randomly selected. The age for girls was between 10 years and 15 years and for boys it was between 12 years and 17 years, so that they were within the circumpubertal period. The CVM was assessed by a method developed by Baccetti and co-workers, whereas hand-wrist maturation was assessed by Fishman's method. The CVM was significantly correlated with HWM skeletal age. (Spearman's r boys = 0.9206, girls = 0.9363). All the patients in cervical vertebra stage 3 (CVS3) of CVM corresponded to skeletal maturation indicator 2 (SMI2) or SMI3 stages of HWM (around the peak of the growth spurt). The method error was insignificant. CVM is a valid indicator of skeletal growth during the circumpubertal period. This work will provide dental practitioners with information on jaw growth modification therapy. (orig.)

  19. The paediatric wrist revisited - findings of bony depressions in healthy children on radiographs compared to MRI

    International Nuclear Information System (INIS)

    The presence of erosions is used for diagnosis and monitoring of disease activity in juvenile idiopathic arthritis (JIA). Assessment of carpal bone erosions in children is challenging due to lack of normal references. To define normal appearances of bony depressions in the wrist on radiographs and MRI. MRI and radiography of the wrist were performed in 88 healthy children, 5-15 years of age. We assessed the number of bony depressions within the carpals/proximal metacarpals on both modalities, separately and combined. A total of 75 carpal depressions were identified on radiography compared to 715 on MRI. The number of bony depressions identified radiographically showed no statistically significant difference across age-groups. Within the metacarpals, there was no significant difference between bony depressions identified by MRI or radiography, except at the bases of the second metacarpal. Bony depressions that resemble erosions are normal findings in the wrist in children. MRI identifies more depressions than radiographs in the carpus. Some bony depressions occur at typical locations and should be accounted for when assessing the wrist in JIA to avoid overstaging. (orig.)

  20. Fetal abdominal magnetic resonance imaging

    International Nuclear Information System (INIS)

    This review deals with the in vivo magnetic resonance imaging (MRI) appearance of the human fetal abdomen. Imaging findings are correlated with current knowledge of human fetal anatomy and physiology, which are crucial to understand and interpret fetal abdominal MRI scans. As fetal MRI covers a period of more than 20 weeks, which is characterized not only by organ growth, but also by changes and maturation of organ function, a different MR appearance of the fetal abdomen results. This not only applies to the fetal intestines, but also to the fetal liver, spleen, and adrenal glands. Choosing the appropriate sequences, various aspects of age-related and organ-specific function can be visualized with fetal MRI, as these are mirrored by changes in signal intensities. Knowledge of normal development is essential to delineate normal from pathological findings in the respective developmental stages

  1. Acute spontaneous isolated dissection of abdominal aorta

    Directory of Open Access Journals (Sweden)

    Ali Akbar beigi

    2009-09-01

    Full Text Available

    • Aortic dissection occurs when the layers of the aorta separate as a result of extra luminal cavity of blood through an intimal tear. Dissection limited to the abdominal aorta is rare. Unfortunately, the appropriate management of dissecting aneurysm of abdominal aorta is not documented yet. A 43 years old man was admitted to Al-zahra hospital in Isfahan with sudden onset of periumbilical abdominal pain. CT scan confirmed infrarenal dissection of abdominal aorta. Performing laparotomy, aorta was repaired using bifurcate collagen-coated Dacron graft. Surgical intervention with synthetic graft is recommended in patients with dissecting aortic aneurysm of infrarenal segments where the extent of dissection is limited and accessible.
    • Keywords: Aneurysm, Aortic dissection, Aortic aneurysm abdominal surgery.

  2. A fibromatosis case mimicking abdominal aorta aneurysm.

    Science.gov (United States)

    Tasdemir, Arzu; Kahraman, Cemal; Tasdemir, Kutay; Mavili, Ertugrul

    2013-01-01

    Retroperitoneal fibrosis is a rare fibrosing reactive process that may be confused with mesenteric fibromatosis. Abdominal aorta aneurysm is rare too and mostly develops secondary to Behcet's disease, trauma, and infection or connective tissue diseases. Incidence of aneurysms occurring as a result of atherosclerotic changes increases in postmenopausal period. Diagnosis can be established with arteriography, tomography, or magnetic resonance imaging associated with clinical findings. Tumors and cysts should be considered in differential diagnosis. Abdominal ultrasound and contrast-enhanced computerized tomography revealed an infrarenal abdominal aorta aneurysm in a 41-year-old woman, but, on surgery, retroperitoneal fibrosis surrounding the aorta was detected. We present this interesting case because retroperitoneal fibrosis encircling the abdominal aorta can mimic abdominal aorta aneurysm radiologically.

  3. Evidence of a limited visuo-motor memory used in programming wrist movements.

    Science.gov (United States)

    Miall, R C; Haggard, P N; Cole, J D

    1995-01-01

    Human subjects can pre-program movements on the basis of visual cues. Experience in a particular task leads to the storage of appropriate control parameters which are used in programming subsequent movements, via a short-term motor memory. The form, duration and usage of this memory are, however, uncertain. Repetitive wrist flexion and extension movements were measured in four subjects. Three were neurologically normal men; the fourth subject had a peripheral large-fibre sensory neuropathy, depriving him of proprioceptive information about wrist movement. Subjects made alternating 45 degrees wrist movements between two visual targets; visual feedback of wrist position was provided for the first part of each trial. After 10 s of tracking, the subjects paused for an interval of 0-24 s before resuming tracking without visual feedback of wrist position. The positional accuracy of subsequent movements was analysed with respect to pause interval. Movement accuracy was reduced by the removal of visual feedback in all four subjects: movements after the pause interval were less accurate than those before the pause. Errors also accumulated within each sequence of movements made without visual feedback. Analysis of the first movement in each trial after the pause indicated a clear relationship between movement accuracy and pause interval. In all four subjects, movement accuracy decayed with longer pause intervals. In the deafferented subject, manipulation of the visual inputs (requiring visual fixation, rather than normal pursuit of the target; or direct viewing of the hand instead of viewing a cursor on a computer screen) affected the relationship between pause interval and subsequent movement accuracy. We propose that the memory used when producing these movements is a short-lasting visuo-motor signal, lasting a few seconds, which is derived from visual knowledge of previous movements, rather than a memory of a particular motor output. This visuo-motor signal is used to

  4. An airjet actuator system for identification of the human arm joint mechanical properties.

    Science.gov (United States)

    Xu YMj; Hunter, I W; Hollerbach, J M; Bennett, D J

    1991-11-01

    A system is described for determining the mechanical properties of the human arm during unconstrained posture and movement. An airjet perturbation device is attached to the wrist with a special cuff, and provides high-frequency stochastic perturbations in potentially three orthogonal directions. The airjet operates as a fluidic flip-flop utilizing the Coanda effect, and generates binary force sequences with a steady-state thrust of 4 N, a flat frequency response to 75 Hz, usable thrust to 150 Hz, and a rise time of 1 ms, when the static pressure at the nozzle inlet is 5.5 x 10(5) Pa (80 psi). These operating characteristics are adequate to identify the arm's mechanical properties efficiently and robustly. PMID:1748446

  5. Streamlining emergent hand and wrist radiography with a modified four-view protocol.

    Science.gov (United States)

    Chou, Henry Y; Steenburg, Scott D; Dunkle, Jeffrey W; Gussick, Sean D; Petersen, Matthew J; Kohli, Marc D; Shen, Changyu; Lin, Hongbo

    2016-08-01

    This study aims to determine whether a modified four-view hand and wrist study performs comparably to the traditional seven views in the evaluation of acute hand and wrist fractures. This retrospective study was approved by the institutional review board with waiver of informed consent. Two hundred forty patients (50 % male; ages 18-92 years) with unilateral three-view hand (posteroanterior, oblique, and lateral) and four-view wrist (posteroanterior, oblique, lateral, and ulnar deviation) radiographs obtained concurrently following trauma were included in this study. Four emergency radiologists interpreted the original seven images, with two radiologists independently evaluating each study. The patients' radiographs were then recombined into four-view series using the three hand images and the ulnar deviated wrist image. These were interpreted by the same radiologists following an 8-week delay. Kappa statistics were generated to measure inter-observer and inter-method agreement. Generalized linear mixed model analysis was performed between the seven- and four-view methods. Of the 480 reports generated in each of the seven- and four-view image sets, 142 (29.6 %) of the seven-view and 126 (26.2 %) of the four-view reports conveyed certain or suspected acute osseous findings. Average inter-observer kappa coefficients were 0.7845 and 0.8261 for the seven- and four-view protocols, respectively. The average inter-method kappa was 0.823. The odds ratio of diagnosing injury using the four-view compared to the seven-view algorithm was 0.69 (CI 0.45-1.06, P = 0.0873). The modified four-view hand and wrist radiographic series produces diagnostic results comparable to the traditional seven views for acute fracture evaluation. PMID:27220651

  6. Anatomical variation of radial wrist extensor muscles: a study in cadavers

    Directory of Open Access Journals (Sweden)

    Soubhagya Ranjan Nayak

    2008-01-01

    Full Text Available OBJECTIVE: The tendons of the extensor carpi radialis longus and brevis muscles are quite useful in tendon transfer, such as in correction of finger clawing and restoration of thumb opposition. Knowledge of additional radial wrist extensor muscle bellies with independent tendons is useful in the above-mentioned surgical procedures. METHODS: The skin, subcutaneous tissue, and antebrachial fascia of 48 (24 on the right side and 24 on left side male upper limb forearms were dissected. The following aspects were then analyzed: (a the presence of additional muscle bellies of radial wrist extensors, (b the origin and insertion of the additional muscle, and (c measurements of the muscle bellies and their tendons. RESULTS: Five out of 48 upper limbs (10.41% had additional radial wrist extensors; this occurred in 3 out of 24 left upper limbs (12.5% and 2 out of 24 right upper limbs (8.3%. In one of the right upper limbs, two additional muscles were found. The length and width of each additional muscle belly and its tendon ranged between 2 - 15cm by 0.35 - 6.4cm and 2.8 - 20.8cm by 0.2 0.5cm, respectively. The additional radial wrist extensor tendons in our study basically originated either from the extensor carpi radialis longus or brevis muscles and were inserted at the base of the 2nd or 3rd metacarpal bone. CONCLUSION: The present study will inform surgeons about the different varieties of additional radial wrist extensors and the frequency of their occurrence.

  7. Distinct thalamo-cortical controls for shoulder, elbow, and wrist during locomotion

    Directory of Open Access Journals (Sweden)

    Irina N. Beloozerova

    2013-05-01

    Full Text Available Recent data from this laboratory on differential controls for the shoulder, elbow, and wrist exerted by the thalamo-cortical network during locomotion is presented, based on experiments involving chronically instrumented cats walking on a flat surface and along a horizontal ladder. The activity of the following three groups of neurons is characterized: 1 neurons of the motor cortex that project to the pyramidal tract (PTNs, 2 neurons of the ventrolateral thalamus (VL, many identified as projecting to the motor cortex (thalamo-cortical neurons, TCs, and 3 neurons of the reticular nucleus of thalamus (RE, which inhibit TCs. Neurons were grouped according to their receptive field into shoulder-, elbow-, and wrist/paw-related categories. During simple locomotion, shoulder-related PTNs were most active in the late stance and early swing, and on the ladder, often increased activity and step-related modulation while reducing discharge duration. Elbow-related PTNs were most active during late swing/early stance and typically remained similar on the ladder. Wrist-related PTNs were most active during swing, and on the ladder often decreased activity and increased modulation while reducing discharge duration.In the VL, shoulder-related neurons were more active during transition from swing to stance. Elbow-related cells tended to be more active during transition from stance to swing and on the ladder often decreased their activity and increased modulation. Wrist-related neurons were more active throughout the stance phase. In the RE, shoulder-related cells had low discharge rates and depths of modulation and long periods of activity distributed evenly across the cycle. In contrast, wrist/paw-related cells discharged synchronously during end of stance and swing with short periods of high activity, high modulation, and frequent sleep-type bursting. We conclude that thalamo-cortical network processes information related to different segments of the forelimb

  8. Arm Swing as a Potential New Prodromal Marker of Parkinson’s Disease

    Science.gov (United States)

    Mirelman, Anat; Bernad-Elazari, Hagar; Thaler, Avner; Giladi-Yacobi, Eytan; Gurevich, Tanya; Gana-Weisz, Mali; Saunders-Pullman, Rachel; Raymond, Deborah; Doan, Nancy; Bressman, Susan B.; Marder, Karen S.; Alcalay, Roy N.; Rao, Ashwini K.; Berg, Daniela; Brockmann, Kathrin; Aasly, Jan; Waro, Bjørg Johanne; Tolosa, Eduardo; Vilas, Dolores; Pont-Sunyer, Claustre; Orr-Urtreger, Avi; Hausdorff, Jeffrey M.; Giladi, Nir

    2016-01-01

    Background Reduced arm swing is a well-known clinical feature of Parkinson’s disease (PD), often observed early in the course of the disease. We hypothesized that subtle changes in arm swing and axial rotation may also be detectable in the prodromal phase. Objective The purpose of this study was to evaluate the relationship between the LRRK2-G2019S mutation, arm swing, and axial rotation in healthy nonmanifesting carriers and noncarriers of the G2019S mutation and in patients with PD. Methods A total of 380 participants (186 healthy nonmanifesting controls and 194 PD patients) from 6 clinical sites underwent gait analysis while wearing synchronized 3-axis body-fixed sensors on the lower back and bilateral wrists. Participants walked for 1 minute under the following 2 conditions: (1) usual walking and (2) dual-task walking. Arm swing amplitudes, asymmetry, variability, and smoothness were calculated for both arms along with measures of axial rotation. Results A total of 122 nonmanifesting participants and 67 PD patients were carriers of the G2019S mutation. Nonmanifesting mutation carriers walked with greater arm swing asymmetry and variability and lower axial rotation smoothness under the dual task condition when compared with noncarriers (P < .04). In the nonmanifesting mutation carriers, arm swing asymmetry was associated with gait variability under dual task (P = .003). PD carriers showed greater asymmetry and variability of movement than PD noncarriers, even after controlling for disease severity (P < .009). Conclusions The G2019S mutation is associated with increased asymmetry and variability among nonmanifesting participants and patients with PD. Prospective studies should determine if arm swing asymmetry and axial rotation smoothness may be used as motor markers of prodromal PD. PMID:27430880

  9. Imaging of the elbow in children with wrist fracture: an unnecessary source of radiation and use of resources?

    Energy Technology Data Exchange (ETDEWEB)

    Golding, Lauren P. [Wake Forest University Baptist Health, Department of Radiology, Winston-Salem, NC (United States); Triad Radiology Associates, Winston-Salem, NC (United States); Yasin, Yousef; Singh, Jasmeet; Anthony, Evelyn [Wake Forest University Baptist Health, Department of Radiology, Winston-Salem, NC (United States); Gyr, Bettina M. [Wake Forest University Baptist Health, Department of Orthopedic Surgery, Winston-Salem, NC (United States); Gardner, Alison [Wake Forest University Baptist Health, Department of Pediatric Emergency Medicine, Winston-Salem, NC (United States)

    2015-08-15

    Anecdotally accepted practice for evaluation of children with clinically suspected or radiographically proven wrist fracture in many urgent care and primary care settings is concurrent imaging of the forearm and elbow, despite the lack of evidence to support additional images. These additional radiographs may be an unnecessary source of radiation and use of health care resources. Our study assesses the necessity of additional radiographs of the forearm and elbow in children with wrist injury. We reviewed electronic medical records of children 17 and younger in whom wrist fracture was diagnosed in the emergency department. We identified the frequency with which additional radiographs of the proximal forearm and distal humerus demonstrated another site of acute injury. We identified 214 children with wrist fracture. Of those, 129 received additional radiographs of the elbow. Physical examination findings proximal to the wrist were documented in only 16 (12%) of these 129 children. A second injury proximal to the wrist fracture was present in 4 (3%) of these 129 children, all of whom exhibited physical examination findings at the elbow. No fractures were documented in children with a negative physical examination of the elbow. Although elbow fractures occasionally complicate distal forearm fractures in children, our findings indicate that a careful physical evaluation of the elbow is sufficient to guide further radiographic investigation. Routine radiographs of both the wrist and elbow in children with distal forearm fracture appear to be unnecessary when an appropriate physical examination is performed. (orig.)

  10. Imaging of the elbow in children with wrist fracture: an unnecessary source of radiation and use of resources?

    International Nuclear Information System (INIS)

    Anecdotally accepted practice for evaluation of children with clinically suspected or radiographically proven wrist fracture in many urgent care and primary care settings is concurrent imaging of the forearm and elbow, despite the lack of evidence to support additional images. These additional radiographs may be an unnecessary source of radiation and use of health care resources. Our study assesses the necessity of additional radiographs of the forearm and elbow in children with wrist injury. We reviewed electronic medical records of children 17 and younger in whom wrist fracture was diagnosed in the emergency department. We identified the frequency with which additional radiographs of the proximal forearm and distal humerus demonstrated another site of acute injury. We identified 214 children with wrist fracture. Of those, 129 received additional radiographs of the elbow. Physical examination findings proximal to the wrist were documented in only 16 (12%) of these 129 children. A second injury proximal to the wrist fracture was present in 4 (3%) of these 129 children, all of whom exhibited physical examination findings at the elbow. No fractures were documented in children with a negative physical examination of the elbow. Although elbow fractures occasionally complicate distal forearm fractures in children, our findings indicate that a careful physical evaluation of the elbow is sufficient to guide further radiographic investigation. Routine radiographs of both the wrist and elbow in children with distal forearm fracture appear to be unnecessary when an appropriate physical examination is performed. (orig.)

  11. Therapeutic synergism in the treatment of post-stroke arm paresis utilizing botulinum toxin, robotic therapy, and constraint-induced movement therapy.

    Science.gov (United States)

    Takebayashi, Takashi; Amano, Satoru; Hanada, Keisuke; Umeji, Atsushi; Takahashi, Kayoko; Koyama, Tetsuo; Domen, Kazuhisa

    2014-11-01

    Botulinum toxin type A (BtxA) injection, constraint-induced movement therapy (CIMT), and robotic therapy (RT) each represent promising approaches to enhance arm motor recovery after stroke. To provide more effective treatment for a 50-year-old man with severe left spastic hemiparesis, we attempted to facilitate CIMT with adaptive approaches to extend the wrist and fingers using RT for 10 consecutive weeks after BtxA injection. This combined treatment resulted in substantial improvements in arm function and the amount of arm use in activities of daily living, and may be effective for stroke patients with severe arm paresis. However, we were unable to sufficiently prove the efficacy of combined treatment based only on a single case. To fully elucidate the efficacy of the combined approach for patients with severe hemiparesis after stroke, future studies of a larger number of patients are needed.

  12. Arm To Arm Interface Using Embedded C

    Directory of Open Access Journals (Sweden)

    Mohanraj.C

    2013-02-01

    Full Text Available Embedded systems are the most emerging field in these recent years. In this paper a different number of ARM processors (LPC2148 and LPC2378 are interconnected using C for distributed services. N numbers of processors are connected as the network and each processing devices are interlinked with each other, so that the each data that is processed by the devices and it can be used by the other device to activate their entire process. All the processed data’s are communicated to other device through Xbee interface card. LPC2148 and LPC2378 ARM processors are used in this prototype and winXtalk is used as a software terminal window. In this paper, the ultimate benefits of multiple processor interactions related to the embedded applications and design issues of processor interconnection are discussed. The features of multiple processor interaction in inter process communication and executions of embedded multitasking are also discussed. In modern embedded computing platform, embedded processor used in various applications like home automation, industrial control, medical system, access control, etc. In this paper, using embedded processor interactions, the several data communication is established.

  13. Load transfer through the radiocarpal joint and the effects of partial wrist arthrodesis on carpal bone behaviour: a finite element study.

    Science.gov (United States)

    Gíslason, M K; Stansfield, B; Bransby-Zachary, M; Hems, T; Nash, D H

    2012-11-01

    A finite element model of the wrist was developed to simulate mechanical changes that occur after surgery of the wrist. After partial arthrodesis, the wrist will experience altered force transmission during loading. Three different types of partial arthrodesis were investigated - radiolunate, radioscaphoid, and radioscapholunate - and compared with the healthy untreated wrist. The results showed that the compressive forces on the radiocarpal joint decreased compared with the untreated wrist with both radiolunate and radioscaphoid fusions. The load transmission through the midcarpal joints varied depending on arthrodesis type. The forces in the extrinsic ligaments decreased with the fusion, most noticeably in the dorsal radiotriquetral ligament, but increased in the dorsal scaphotriquetral ligament. From the results of the study it can be concluded that the radioscapholunate fusion shows the most biomechanically similar behaviour out of the three fusion types compared with the healthy wrist. The modelling described in this paper may be a useful approach to pre-operative planning in wrist surgery. PMID:22457257

  14. Load transfer through the radiocarpal joint and the effects of partial wrist arthrodesis on carpal bone behaviour: a finite element study.

    Science.gov (United States)

    Gíslason, M K; Stansfield, B; Bransby-Zachary, M; Hems, T; Nash, D H

    2012-11-01

    A finite element model of the wrist was developed to simulate mechanical changes that occur after surgery of the wrist. After partial arthrodesis, the wrist will experience altered force transmission during loading. Three different types of partial arthrodesis were investigated - radiolunate, radioscaphoid, and radioscapholunate - and compared with the healthy untreated wrist. The results showed that the compressive forces on the radiocarpal joint decreased compared with the untreated wrist with both radiolunate and radioscaphoid fusions. The load transmission through the midcarpal joints varied depending on arthrodesis type. The forces in the extrinsic ligaments decreased with the fusion, most noticeably in the dorsal radiotriquetral ligament, but increased in the dorsal scaphotriquetral ligament. From the results of the study it can be concluded that the radioscapholunate fusion shows the most biomechanically similar behaviour out of the three fusion types compared with the healthy wrist. The modelling described in this paper may be a useful approach to pre-operative planning in wrist surgery.

  15. Children In Armed Conflicts

    OpenAIRE

    Ranjan, Tejaswini

    2013-01-01

    This is a descriptive study. A child soldier is a child under the age of 18 that is recruited into the armed forces and engages in political violence. Child Soldiers are recruited by a state or non-state armed group and used as fighters, cooks, suicide bombers, human shields, messengers, spies, or for sexual purposes. This work of research describes the plight of child soldiers taking in context the scenario of different nations. The International mechanisms to combat this problem have also b...

  16. PHENIX Muon Arms

    International Nuclear Information System (INIS)

    The PHENIX Muon Arms detect muons at rapidities of |y|=(1.2-2.4) with full azimuthal acceptance. Each muon arm must track and identify muons and provide good rejection of pions and kaons (∼10-3). In order to accomplish this we employ a radial field magnetic spectrometer with precision tracking (Muon Tracker) followed by a stack of absorber/low resolution tracking layers (Muon Identifier). The design, construction, testing and expected run parameters of both the muon tracker and the muon identifier are described

  17. PHENIX Muon Arms

    Energy Technology Data Exchange (ETDEWEB)

    Akikawa, H.; Al-Jamel, A.; Archuleta, J.B.; Archuleta, J.R.; Armendariz, R.; Armijo, V.; Awes, T.C.; Baldisseri, A.; Barker, A.B.; Barnes, P.D.; Bassalleck, B.; Batsouli, S.; Behrendt, J.; Bellaiche, F.G.; Bland, A.W.; Bobrek, M.; Boissevain, J.G.; Borel, H.; Brooks, M.L.; Brown, A.W.; Brown, D.S.; Bruner, N.; Cafferty, M.M.; Carey, T.A.; Chai, J.-S.; Chavez, L.L.; Chollet, S.; Choudhury, R.K.; Chung, M.S.; Cianciolo, V.; Clark, D.J.; Cobigo, Y.; Dabrowski, C.M.; Debraine, A.; DeMoss, J.; Dinesh, B.V.; Drachenberg, J.L.; Drapier, O.; Echave, M.A.; Efremenko, Y.V.; En' yo, H.; Fields, D.E.; Fleuret, F.; Fried, J.; Fujisawa, E.; Funahashi, H.; Gadrat, S.; Gastaldi, F.; Gee, T.F.; Glenn, A.; Gogiberidze, G.; Gonin, M.; Gosset, J.; Goto, Y.; Granier de Cassagnac, R.; Hance, R.H.; Hart, G.W.; Hayashi, N.; Held, S.; Hicks, J.S.; Hill, J.C.; Hoade, R.; Hong, B.; Hoover, A.; Horaguchi, T.; Hunter, C.T.; Hurst, D.E.; Ichihara, T.; Imai, K.; Isenhower, L.D.L. Davis; Isenhower, L.D.L. Donald; Ishihara, M.; Jang, W.Y.; Johnson, J.; Jouan, D.; Kamihara, N.; Kamyshkov, Y.; Kang, J.H.; Kapoor, S.S.; Kim, D.J.; Kim, D.-W.; Kim, G.-B.; Kinnison, W.W.; Klinksiek, S.; Kluberg, L.; Kobayashi, H.; Koehler, D.; Kotchenda, L.; Kuberg, C.H.; Kurita, K.; Kweon, M.J.; Kwon, Y.; Kyle, G.S.; LaBounty, J.J.; Lajoie, J.G.; Lee, D.M.; Lee, S.; Leitch, M.J.; Li, Z.; Liu, M.X.; Liu, X.; Liu, Y.; Lockner, E.; Lopez, J.D.; Mao, Y.; Martinez, X.B.; McCain, M.C.; McGaughey, P.L.; Mioduszewski, S.; Mischke, R.E.; Mohanty, A.K.; Montoya, B.C.; Moss, J.M.; Murata, J.; Murray, M.M.; Nagle, J.L.; Nakada, Y.; Newby, J.; Obenshain, F.; Palounek, A.P.T.; Papavassiliou, V.; Pate, S.F.; Plasil, F.; Pope, K.; Qualls, J.M.; Rao, G.; Read, K.F. E-mail: readkf@ornl.gov; Robinson, S.H.; Roche, G.; Romana, A.; Rosnet, P.; Roth, R.; Saito, N.; Sakuma, T.; Sandhoff, W.F.; Sanfratello, L.; Sato, H.D.; Savino, R.; Sekimoto, M.; Shaw, M.R.; Shibata, T.-A.; Sim, K.S.; Skank, H.D.; Smith, D.E.; Smith, G.D. [and others

    2003-03-01

    The PHENIX Muon Arms detect muons at rapidities of |y|=(1.2-2.4) with full azimuthal acceptance. Each muon arm must track and identify muons and provide good rejection of pions and kaons ({approx}10{sup -3}). In order to accomplish this we employ a radial field magnetic spectrometer with precision tracking (Muon Tracker) followed by a stack of absorber/low resolution tracking layers (Muon Identifier). The design, construction, testing and expected run parameters of both the muon tracker and the muon identifier are described.

  18. Abdominal Burkitt lymphoma in children : CT finding

    Energy Technology Data Exchange (ETDEWEB)

    Song, Jae Uoo; Kim, Woo Sun; Kim, In One; Yeon, Kyung Mo; Ahn, Hyo Seop; Shin, Hee Young [Seoul National Univ. College of Medicine, Seoul (Korea, Republic of); Song, Chi Sung [Seoul City Boramae Hospital Department of Radiology, Seoul (Korea, Republic of)

    1996-10-01

    To evaluate the CT findings of Burkitt's lymphoma involving the abdomen in children We retrospectively analyzed the abdominal CT of ten children who presented with abdominal symptom. They were confirmed by operation in two cases and by fine needle aspiration biopsy in eight to be suffering from Burkitt's lymphoma. We also abdominal ultrasonography(USG)(n=10) and carried out small bowel follow-through examination(SBS)(n=5). Analyses focused on features of the abdominal mass : bowel wall thickening, ascites, lymphadenopathy, and the involvement of intra-abdominal solid organ. Abdominal CT at the time of presentation showed a huge conglomerated mass encasing segments of small bowel and also peripherally displacing bowel loops(n=9), bowel wall thickening(n=10), and ascites(n=10). In three of these cases, we were able to see tumor necrosis and cavity formation. Extensive infiltration into mesenteric fat and obliteration of tissue plane made it impossible to identify on CT the margin of the tumor and the presence of mesenteric lymphadenopathy. In four patients, sonography showed enlarged mesenteric lymph nodes(15-20mm), and in three, retroperitoneal lymph nodes(5mm, 10mm, 12mm in long dimension) were detected on CT and USG. Abdominal CT can reveal the characteristic imaging features of Burkitt's lymphoma in children. These are a huge conglomerate mass with or without cavity formation, that encases the small bowel and infiltrates the mesentery, ascites, and the relatively spared retroperitoneal lymph nodes.

  19. Some mechanical design aspects of the European Robotic Arm

    Science.gov (United States)

    Lambooy, Peter J.; Mandersloot, Wart M.; Bentall, Richard H.

    1995-01-01

    The European Robotic Arm (ERA) is a contribution to the Russian Segment of the International Space Station Alpha. It will start operating on the Russian Segment during the assembly phase. ERA is designed and produced by a large industrial consortium spread over Europe with Fokker Space & Systems as prime contractor. In this paper, we will describe some of the overall design aspects and focus on the development of several mechanisms within ERA. The operation of ERA during the approach of its end effector towards the grapple interface and the grapple operation is discussed, with a focus on mechanisms. This includes the geometry of the end effector leading edge, which is carefully designed to provide the correct and complete tactile information to a torque-force sensor (TFS). The data from this TFS are used to steer the arm such that forces and moments are kept below 20 N and 20 N.m respectively during the grappling operation. Two hardware models of the end effector are built. The problems encountered are described as well as their solutions. The joints in the wrists and the elbow initially used a harmonic drive lubricated by MoS2. During development testing, this combination showed an insufficient lifetime in air to survive the acceptance test program. The switch-over to a system comprising planetary gearboxes with grease lubrication is described. From these development efforts, conclusions are drawn and recommendations are given for the design of complex space mechanisms.

  20. [Internationalization and innovation of abdominal acupuncture].

    Science.gov (United States)

    Wang, Yong-Zhou

    2013-09-01

    Characteristics of abdominal acupuncture are analyzed through three aspects of inheriting and innovation, collaborated research as well as international visual field. It is pointed that abdominal acupuncture is based on clinical practice, focuses on enhancing the therapeutic effect and expending the clinical application. It also promots the thinking on how to recall the tradition and how to inherit tradition availably. The modern medical problems should be studied and innovation resolutions should be searched, which can help the internationalization and modernization of abdominal acupuncture. PMID:24298780

  1. Combined subcutaneous, intrathoracic and abdominal splenosis.

    Science.gov (United States)

    Javadrashid, Reza; Paak, Neda; Salehi, Ahad

    2010-09-01

    We report a case of combined subcutaneous, intrathoracic, and abdominal splenosis who presented with attacks of flushing, tachycardia and vague abdominal pain. The patient's past medical history included a splenectomy due to abdominal trauma and years later, a lung lobectomy due to recurrent pneumonia. An enhancing solid mass adjacent to the upper pole of the left kidney and nodular pleural based lesions in the left hemi-thorax along with nodular lesions in subcutaneous tissue of the left chest wall suggested possible adrenal malignancy with multiple metastases. Histopathologic examination demonstrated benign lesions of ectopic splenic tissue. PMID:20804314

  2. Chylous Ascites after Abdominal Aortic Aneurysm Repair.

    Science.gov (United States)

    Ohki, Shinichi; Kurumisawa, Soki; Misawa, Yoshio

    2016-01-01

    A 73-year-old man was transferred for treatment of abdominal aortic aneurysm. He had no history of abdominal surgeries. Grafting between the infra-renal abdominal aorta and the bilateral common iliac arteries was performed. Proximal and distal cross clamps were applied for grafting. He developed chylous ascites on the 5th post-operative day, 2 days after initiation of oral intake. Fortunately, he responded to treatment with total parenteral hyper-alimentation for 10 days, followed by a low-fat diet. There was no recurrence of ascites. PMID:27087873

  3. New developments in prosthetic arm systems

    Directory of Open Access Journals (Sweden)

    Vujaklija I

    2016-07-01

    Full Text Available Ivan Vujaklija,1 Dario Farina,1 Oskar C Aszmann2 1Institute of Neurorehabilitation Systems, Bernstein Focus Neurotechnology Göttingen, University Medical Center Göttingen, Georg-August University, Göttingen, Germany; 2Christian Doppler Laboratory for Restoration of Extremity Function, Division of Plastic and Reconstructive Surgery, Department of Surgery, Medical University of Vienna, Vienna, Austria Abstract: Absence of an upper limb leads to severe impairments in everyday life, which can further influence the social and mental state. For these reasons, early developments in cosmetic and body-driven prostheses date some centuries ago, and they have been evolving ever since. Following the end of the Second World War, rapid developments in technology resulted in powered myoelectric hand prosthetics. In the years to come, these devices were common on the market, though they still suffered high user abandonment rates. The reasons for rejection were trifold – insufficient functionality of the hardware, fragile design, and cumbersome control. In the last decade, both academia and industry have reached major improvements concerning technical features of upper limb prosthetics and methods for their interfacing and control. Advanced robotic hands are offered by several vendors and research groups, with a variety of active and passive wrist options that can be articulated across several degrees of freedom. Nowadays, elbow joint designs include active solutions with different weight and power options. Control features are getting progressively more sophisticated, offering options for multiple sensor integration and multi-joint articulation. Latest developments in socket designs are capable of facilitating implantable and multiple surface electromyography sensors in both traditional and osseointegration-based systems. Novel surgical techniques in combination with modern, sophisticated hardware are enabling restoration of dexterous upper limb

  4. Modernization of African Armed Forces

    DEFF Research Database (Denmark)

    Mandrup, Thomas

    2015-01-01

    Concept paper framing the debate at the Dakar Forum Workshop on Modernization of Armed forces in Africa.......Concept paper framing the debate at the Dakar Forum Workshop on Modernization of Armed forces in Africa....

  5. Separating bedtime rest from activity using waist or wrist-worn accelerometers in youth.

    Directory of Open Access Journals (Sweden)

    Dustin J Tracy

    Full Text Available Recent interest in sedentary behavior and technological advances expanded use of watch-size accelerometers for continuous monitoring of physical activity (PA over extended periods (e.g., 24 h/day for 1 week in studies conducted in natural living environment. This approach necessitates the development of new methods separating bedtime rest and activity periods from the accelerometer recordings. The goal of this study was to develop a decision tree with acceptable accuracy for separating bedtime rest from activity in youth using accelerometer placed on waist or wrist. Minute-by-minute accelerometry data were collected from 81 youth (10-18 years old, 47 females during a monitored 24-h stay in a whole-room indirect calorimeter equipped with a force platform covering the floor to detect movement. Receiver Operating Characteristic (ROC curve analysis was used to determine the accelerometer cut points for rest and activity. To examine the classification differences, the accelerometer bedtime rest and activity classified by the algorithm in the development group (n = 41 were compared with actual bedtime rest and activity classification obtained from the room calorimeter-measured metabolic rate and movement data. The selected optimal bedtime rest cut points were 20 and 250 counts/min for the waist- and the wrist-worn accelerometer, respectively. The selected optimal activity cut points were 500 and 3,000 counts/min for waist and wrist-worn accelerometers, respectively. Bedtime rest and activity were correctly classified by the algorithm in the validation group (n = 40 by both waist- (sensitivity: 0.983, specificity: 0.946, area under ROC curve: 0. 872 and wrist-worn (0.999, 0.980 and 0.943 accelerometers. The decision tree classified bedtime rest correctly with higher accuracy than commonly used automated algorithm for both waist- and wrist-warn accelerometer (all p<0.001. We concluded that cut points developed and validated for waist- and wrist

  6. [Churg-Strauss abdominal manifestation].

    Science.gov (United States)

    Suarez-Moreno, Roberto; Ponce-Pérez, Luis Virgilio; Margain-Paredes, Miguel Angel; Garza-de la Llave, Heriberto; Madrazo-Navarro, Mario; Espinosa-Álvarez, Arturo

    2014-01-01

    Antecedentes: la enfermedad de Churg-Strauss es poco común, idiopática, caracterizada por hipereosinofilia en sangre y tejidos, aunada a vasculitis sistémica en pacientes con antecedentes de asma o rinitis alérgica. Las manifestaciones gastrointestinales del síndrome de Churg Strauss se caracterizan por dolor abdominal, seguido de diarrea y hemorragia en 31-45% de los casos. Caso clínico: paciente masculino con antecedente de asma que acudió a consulta por abdomen agudo con probable apendicitis aguda; durante el protocolo de estudio se diagnosticó síndrome de Churg Strauss, con manifestaciones intestinales. Conclusión: el síndrome de Churg Strauss es una vasculitis poco frecuente que puede manifestarse con síntomas intestinales, como en este caso; es importante tenerlo en mente a la hora de los diagnósticos diferenciales. Existen pocos reportes con este síndrome asociado con abdomen agudo, todos ellos con mal pronóstico.

  7. Component Separation for Complex Abdominal Wall Reconstruction

    Medline Plus

    Full Text Available COMPONENT SEPARATION FOR COMPLEX ABDOMINAL WALL RECONSTRUCTION ALBANY MEDICAL CENTER ALBANY, NY April 30, 2008 00:00: ... Koumanis. The surgery comes to you from Albany Medical Center in Albany, New York. In just moments, ...

  8. An Unusual Case of Abdominal Pain

    Directory of Open Access Journals (Sweden)

    Bobby Desai

    2012-01-01

    Full Text Available Renal calyceal rupture is a usual etiology of abdominal pain in the emergency department. We present a case of unexpected renal calyx rupture in a patient with symptomatology of renal colic. A discussion and review are provided.

  9. Genetics Home Reference: abdominal wall defect

    Science.gov (United States)

    ... size and can usually be diagnosed early in fetal development, typically between the tenth and fourteenth weeks of ... organs at the abdominal wall opening late in fetal development may also contribute to organ injury. Intestinal damage ...

  10. Evaluation of lesions of the internal ligaments of the wrist; conventional magnetic resonance imaging versus MR arthrography (MRA

    Directory of Open Access Journals (Sweden)

    Heba Ahmed Kamal

    2014-09-01

    Conclusion: MR arthrography is a potent additional tool facilitating the diagnosis of different pathologic entities affecting the major internal ligaments of the wrist joint and helps to reduce arthroscopic interventions.

  11. Abdominal separation in an adult male patient with acute abdominal pain

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    We report a male patient with prolonged post-prandial abdominal distension and a sudden onset of epigastric pain initially diagnosed as acute abdomen. The patient had no history of surgery. Physical examination revealed peritonitis and abdominal computed tomography scan showed upper abdominal mesentery intorsion. The patient then underwent surgical intervention. It was found that the descending mesocolon dorsal root was connected to the ascending colon and formed a membrane encapsulating the small intestine...

  12. [Intestinal occlusion and abdominal compartment syndrome (ACS)].

    Science.gov (United States)

    Stagnitti, Franco

    2009-01-01

    Intestinal occlusion is defined as an independent predictive factor of intra-abdominal hypertension (IAH) which represents an independent predictor of mortality. Baggot in 1951 classified patients operated with intestinal occlusion as being at risk for IAH ("abdominal blow-out"), recommending them for open abdomen surgery proposed by Ogilvie. Abdominal surgery provokes IAH in 44.7% of cases with mortality which, in emergency, triples with respect to elective surgery (21.9% vs 6.8%). In particular, IAH is present in 61.2% of ileus and bowel distension and is responsible for 52% of mortality (54.8% in cases with intra-abdominal infection). These patients present with an increasing intra-abdominal pressure (IAP) which, over 20-25 mmHg, triggers an Abdominal Compartment Syndrome (ACS) with altered functions in some organs arriving at Multiple Organ Dysfunction Syndrome (MODS). The intestine normally covers 58% of abdominal volume but when there is ileus distension, intestinal pneumatosis develops (third space) which can occupy up to 90% of the entire cavity. At this moment, Gastro Intestinal Failure (GIF) can appear, which is a specific independent risk factor of mortality, motor of "Organ Failure". The pathophysiological evolution has many factors in 45% of cases: intestinal pneumatosis is associated with mucosal and serous edema, capillary leakage with an increase in extra-cellular volume and peritoneal fluid collections (fourth space). The successive loss of the mucous barrier permits a bacterial translocation which includes bacteria, toxins, pro-inflammatory factors and oxygen free radicals facilitating the passage from an intra-abdominal to inter-systemic vicious cyrcle. IAH provokes the raising of the diaphragm, and vascular and visceral compressions which induce hypertension in the various spaces with compartmental characteristics. These trigger hypertension in the renal, hepatic, pelvic, thoracic, cardiac, intracranial, orbital and lower extremity areas, giving

  13. Recurrent abdominal pain in paediatric patients

    OpenAIRE

    Mak, VWY; Ng, WM; Chan, KL

    1999-01-01

    Recurrent abdominal pain is a common problem in the paediatric population. While functional abdominal pain accounts for the majority of cases, an organic cause for pain may be found in about 5% to 10% of children. Diagnostic evaluation depends on the clinical presentation and the presence of specific findings. Excessive testing should be avoided as this may increase parental anxiety and put the child through unnecessary stress.

  14. Surveillance intervals for small abdominal aortic aneurysms

    DEFF Research Database (Denmark)

    Bown, Matthew J; Sweeting, Michael J; Brown, Louise C;

    2013-01-01

    Small abdominal aortic aneurysms (AAAs [3.0 cm-5.4 cm in diameter]) are monitored by ultrasound surveillance. The intervals between surveillance scans should be chosen to detect an expanding aneurysm prior to rupture.......Small abdominal aortic aneurysms (AAAs [3.0 cm-5.4 cm in diameter]) are monitored by ultrasound surveillance. The intervals between surveillance scans should be chosen to detect an expanding aneurysm prior to rupture....

  15. Using abdominal massage in bowel management.

    Science.gov (United States)

    Connor, Michelle; Hunt, Catherine; Lindley, Alison; Adams, John

    2014-07-15

    This article describes the introduction of abdominal massage techniques by a community team as part of a total bowel management programme for people with learning disabilities. A trust-wide audit of prescribed laxative use by this client group raised concerns, and led to a more systematic approach to managing constipation in people with learning disabilities. An education programme for carers proved to be successful. Some reported that adopting abdominal massage provided further opportunity to develop the therapeutic relationship. PMID:25005415

  16. Asymptomatic torsion of intra-abdominal testis

    OpenAIRE

    M. Amin El-Gohary

    2015-01-01

    We report a case of intra-abdominal testicular torsion, of eight years old boy who presented with asymptomatic left impalpable testis. Diagnostic laparoscopy revealed a twisted small intra-abdominal testis in which the spermatic cord twisted 3 times over a band attached to the internal ring. The cord was long enough to bring the small testis into the scrotal sac. This case highlights the pole of laparoscopy in the management of impalpable testes.

  17. Traumatic pseudoaneurysm of the abdominal aorta.

    Science.gov (United States)

    Barchiche, R; Bové, T; Demanet, H; Goldstein, J P; Deuvaert, F E

    1999-08-01

    A traumatic pseudoaneurysm of the abdominal aorta is a rare entity, occurring as the result of a missed aortic lesion at the time of the initial injury. Therefore, clinical suspicion and careful abdominal exploration at first laparotomy is mandatory to prevent aortic pseudoaneurysm formation and its risk of delayed rupture. We present a case of successful surgical treatment of a suprarenal aortic false aneurysm, presenting 4 weeks after a life-threatening gunshot wound in a 13-year-old child. PMID:10499389

  18. Abdominal integument atrophy after operative procedures

    OpenAIRE

    Smereczyński, Andrzej; Kołaczyk, Katarzyna; Lubiński, Jan; Bojko, Stefania; Gałdyńska, Maria; Bernatowicz, Elżbieta

    2012-01-01

    The aim of the study was to analyze clinical material concerning postoperative atrophy of abdominal integument. Material and methods The evaluated group consisted of 29 patients with sonographically revealed atrophy of the abdominal wall. Those changes were observed after various surgical procedures: mainly after long, anterolateral laparotomies or several classical operations. Ultrasound examinations up to the year 2000 were performed with analog apparatus, in the latter years only with digi...

  19. Diagnosis and treatment of expanding haematoma of the lateral abdominal wall after blunt abdominal trauma

    International Nuclear Information System (INIS)

    We report a rare case of an expanding post-traumatic lateral abdominal wall haematoma. A superselective arteriogram of the deep circumflex iliac artery showed extravasation from the ascending branch, urging emergency therapy. Microcoil and Gelfoam embolisation was successfully performed. Haematomas of the abdominal wall can be divided in the common rectus sheath haematomas and the rare haematomas of the lateral abdominal wall. Differentiating both entities is essential, since there is a strong difference in their vascular supply. The typical vascular supply of the lateral abdominal wall is discussed, with emphasis on the ascending branch of the deep circumflex iliac artery. (orig.)

  20. Anomalous bilateral contribution of extensor pollicis longus and muscle fusion of the first compartment of the wrist

    OpenAIRE

    Rodrigo César. Rosa; Kennedy Martinez de Oliveira; Jorge Alfredo Léo; Bruno Adriano Borges Elias; Paulo Ricardo dos Santos; Hildemberg Agostinho Rocha de Santiago

    2016-01-01

    Knowledge of the anatomical variations of the muscles of the first dorsal compartments of the wrist is clinically relevant to De Quervain's tenosynovitis and to reconstructive surgeries. In the literature, there are many reports of the presence of multiple insertion tendons in the first dorsal compartment of the wrist, but few reports describe occurrences of fusion and muscle contributions. This case report describes an anomalous bilateral contribution of the extensor pollicis longus. This an...

  1. The Role of Wrist Magnetic Resonance Arthrography in Diagnosing Triangular Fibrocartilage Complex Tears; Experience at King Hussein Medical Center, Jordan

    Directory of Open Access Journals (Sweden)

    Asem A. Al-Hiari

    2013-05-01

    Full Text Available Objectives: The aims of the study were to evaluate the role of magnetic resonance arthrography (MRA of the wrist in detecting full-thickness tears of the triangular fibrocartilage complex (TFCC and to compare the results of the magnetic resonance arthrography (MRA with the gold standard arthroscopic findings. Methods:The study was performed at King Hussein Medical Center, Amman, Jordan, between January 2008 and December 2011. A total of 42 patients (35 males and 7 females who had ulnar-sided wrist pain and clinical suspicions of TFCC tears were included in the study. All patients underwent wrist magnetic resonance arthrography (MRA and then a wrist arthroscopy. The results of MRA were compared with the arthroscopic findings. Results: After comparison with the arthroscopic findings, the MRA had three false-negative results (sensitivity = 93% and no false-positive results. A total of 39 patients were able to return to work. Satisfaction was high in 38 of the patients and 33 had satisfactorypain relief. The sensitivity of the wrist MRA in detecting TFCC full-thickness tears was 93% (39, and specificity was 80% (16/20. The overall accuracy of wrist arthroscopy in detecting a full-thickness tear of the TFCC in our study was 85% (29/34. Conclusion: These results illustrate the role of wrist MRA in assessing the TFCC pathology and suggest its use as the first imaging technique, following a plain X-ray, in evaluating patients with chronic ulnar side wrist pain with suspected TFCC injuries.

  2. Improvement of a sensor unit for wrist blood pressure monitoring system

    Science.gov (United States)

    Koo, Sangjun; Kwon, Jongwon; Park, Yongman; Ayuzenara, Odgerel; Kim, Hiesik

    2007-12-01

    A blood pressure sensor unit for ubiquitous healthcare monitoring was newly developed. The digital wrist band-type blood pressure devices for home are popular already in the market. It is useful for checking blood pressure level at home and control of hypertension. Especially, it is very essential home device to check the health condition of blood circulation disease. Nowadays many product types are available. But the measurement of blood pressure is not accurate enough compared with the mechanical type. It needs to be upgraded to assure the precise health data enough to use in the hospital. The structure, feature and output signal of capacitor type pressure sensors are analyzed. An improved design of capacitor sensor is suggested. It shows more precise health data after use on a wrist band type health unit. They can be applied for remote u-health medical service.

  3. Heart Rate Tracking using Wrist-Type Photoplethysmographic (PPG) Signals during Physical Exercise with Simultaneous Accelerometry

    Science.gov (United States)

    Boloursaz Mashhadi, Mahdi; Asadi, Ehsan; Eskandari, Mohsen; Kiani, Shahrzad; Marvasti, Farokh

    2016-02-01

    This paper considers the problem of casual heart rate tracking during intensive physical exercise using simultaneous 2 channel photoplethysmographic (PPG) and 3 dimensional (3D) acceleration signals recorded from wrist. This is a challenging problem because the PPG signals recorded from wrist during exercise are contaminated by strong Motion Artifacts (MAs). In this work, a novel algorithm is proposed which consists of two main steps of MA Cancellation and Spectral Analysis. The MA cancellation step cleanses the MA-contaminated PPG signals utilizing the acceleration data and the spectral analysis step estimates a higher resolution spectrum of the signal and selects the spectral peaks corresponding to HR. Experimental results on datasets recorded from 12 subjects during fast running at the peak speed of 15 km/hour showed that the proposed algorithm achieves an average absolute error of 1.25 beat per minute (BPM). These experimental results also confirm that the proposed algorithm keeps high estimation accuracies even in strong MA conditions.

  4. Ultrasound-guided procedures around the wrist and hand: How to do

    Energy Technology Data Exchange (ETDEWEB)

    Orlandi, Davide; Corazza, Angelo [Scuola di Specializzazione in Radiodiagnostica, Università degli Studi di Genova, Via L.B. Alberti 4, 16132 Genova (Italy); Silvestri, Enzo [Diagnostica per Immagini, Ospedale Evangelico Internazionale, Corso Solferino 29A, 16100 Genova (Italy); Serafini, Giovanni [Dipartimento di Diagnostica per Immagini, Ospedale Santa Corona, Via XXV Aprile 38, 17037 Pietra Ligure, Savona (Italy); Savarino, Edoardo Vincenzo [Dipartimento di Scienze Chirurgiche, Oncologiche e Gastroenterologiche, Università degli Studi di Padova, Via Giustiniani, Padova (Italy); Garlaschi, Giacomo [Dipartimento di Scienze per la Salute, Università degli Studi di Genova, Via L.B. Alberti 4, 16132 Genova (Italy); Mauri, Giovanni [Servizio di Radiologia, IRCCS Policlinico San Donato, Piazza Malan 2, San Donato Milanese, Milano (Italy); Cimmino, Marco Amedeo [Dipartimento di Medicina Interna, Università degli Studi di Genova, Via L.B. Alberti 4, 16132 Genova (Italy); Sconfienza, Luca Maria, E-mail: io@lucasconfienza.it [Servizio di Radiologia, IRCCS Policlinico San Donato, Piazza Malan 2, San Donato Milanese, Milano (Italy); Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, Piazza Malan 2, San Donato Milanese, Milano (Italy)

    2014-07-15

    Ultrasound has emerged as a low-cost, radiation-free and effective imaging technique to detect joint abnormalities and to guide percutaneous procedures. Being superficial, wrist and hand tendons and joints represent a good target to perform such procedures using ultrasound guidance. This kind of approach allows for a clear and real-time visualization of the needles during their whole path. In this setting, the knowledge of technical aspects and tips is essential to act in the most accurate way on target tissues that can be as small as a few millimetres. The aim of this review is to summarize the local treatments of inflammatory and degenerative disease described in literature (such as treatment of De Quervain's tenosynovitis, trigger finger, trapezio-metacarpal joint osteoarthritis, etc.), emphasizing precautions and tricks based on day-by-day experience that may help to improve the outcome of percutaneous ultrasound-guided procedures around the wrist and hand.

  5. Measuring generalization of visuomotor perturbations in wrist movements using mobile phones.

    Directory of Open Access Journals (Sweden)

    Hugo Liberal Fernandes

    Full Text Available Recent studies in motor control have shown that visuomotor rotations for reaching have narrow generalization functions: what we learn during movements in one direction only affects subsequent movements into close directions. Here we wanted to measure the generalization functions for wrist movement. To do so we had 7 subjects performing an experiment holding a mobile phone in their dominant hand. The mobile phone's built in acceleration sensor provided a convenient way to measure wrist movements and to run the behavioral protocol. Subjects moved a cursor on the screen by tilting the phone. Movements on the screen toward the training target were rotated and we then measured how learning of the rotation in the training direction affected subsequent movements in other directions. We find that generalization is local and similar to generalization patterns of visuomotor rotation for reaching.

  6. Design of a series elastic actuator for a compliant parallel wrist rehabilitation robot.

    Science.gov (United States)

    Sergi, Fabrizio; Lee, Melissa M; O'Malley, Marcia K

    2013-06-01

    This paper presents the design of a novel linear series elastic actuator purposely designed to match the requirements of robots for wrist rehabilitation: backdriveability, intrinsic compliance, and capability to be controlled as ideal force/torque sources. An existing rehabilitation robot is adapted to include intrinsic compliance in the design. A novel linear compliant element is designed to meet dimensional and force/stiffness requirements; a force sensing scheme involving a Hall-effect sensor is optimized in FEM simulations and developed. Linearity tests of the compliant sensing element show a maximum of 4.5% of FSO combined nonlinearity and hysteresis errors. Characterization experiments show that the developed system introduces physical compliance, still guaranteeing accurate force control in a frequency range largely compatible with that required for wrist assistance during rehabilitation. PMID:24187298

  7. Wrist Camera Orientation for Effective Telerobotic Orbital Replaceable Unit (ORU) Changeout

    Science.gov (United States)

    Jones, Sharon Monica; Aldridge, Hal A.; Vazquez, Sixto L.

    1997-01-01

    The Hydraulic Manipulator Testbed (HMTB) is the kinematic replica of the Flight Telerobotic Servicer (FTS). One use of the HMTB is to evaluate advanced control techniques for accomplishing robotic maintenance tasks on board the Space Station. Most maintenance tasks involve the direct manipulation of the robot by a human operator when high-quality visual feedback is important for precise control. An experiment was conducted in the Systems Integration Branch at the Langley Research Center to compare several configurations of the manipulator wrist camera for providing visual feedback during an Orbital Replaceable Unit changeout task. Several variables were considered such as wrist camera angle, camera focal length, target location, lighting. Each study participant performed the maintenance task by using eight combinations of the variables based on a Latin square design. The results of this experiment and conclusions based on data collected are presented.

  8. A genome-wide association analysis implicates SOX6 as a candidate gene for wrist bone mass

    Institute of Scientific and Technical Information of China (English)

    Shawn; LEVY

    2010-01-01

    Osteoporosis is a highly heritable common bone disease leading to fractures that severely impair the life quality of patients.Wrist fractures caused by osteoporosis are largely due to the scarcity of wrist bone mass.Here we report the results of a genome-wide association study (GWAS) of wrist bone mineral density (BMD).We examined ~500000 SNP markers in 1000 unrelated homogeneous Caucasian subjects and found a novel allelic association with wrist BMD at rs11023787 in the SOX6 (SRY (sex determining region Y)-box 6) gene (P=9.00×10-5).Subjects carrying the C allele of rs11023787 in SOX6 had significantly higher mean wrist BMD values than those with the T allele (0.485:0.462 g cm-2 for C allele vs.T allele carriers).For validation,we performed SOX6 association for BMD in an independent Chinese sample and found that SNP rs11023787 was significantly associated with wrist BMD in the Chinese sample (P=6.41×10-3).Meta-analyses of the GWAS scan and the replication studies yielded P-values of 5.20×10-6 for rs11023787.Results of this study,together with the functional relevance of SOX6 in cartilage formation,support the SOX6 gene as an important gene for BMD variation.

  9. MRI of the wrist in juvenile idiopathic arthritis: erosions or normal variants? A prospective case-control study

    Energy Technology Data Exchange (ETDEWEB)

    Ording Muller, Lil-Sofie [University Hospital North Norway, Department of Radiology, Tromsoe (Norway); Great Ormond Street Hospital for Children, Department of Radiology, London (United Kingdom); Boavida, Peter [Homerton University Hospital, Department of Radiology, London (United Kingdom); Avenarius, Derk; Eldevik, Odd Petter [University Hospital North Norway, Department of Radiology, Tromsoe (Norway); Damasio, Beatrice [Ospedale Pediatrico Gaslini, Department of Radiology, Genoa (Italy); Malattia, Clara [Ospedale Pediatrico Gaslini, Department of Rhematology, Genoa (Italy); Lambot-Juhan, Karen [Hopital Necker Enfants Malades, Department of Radiology, Paris (France); Tanturri, Laura [Ospedale Pediatrico Bambino Gesu, Department of Radiology, Rome (Italy); Owens, Catherine M. [Great Ormond Street Hospital for Children, Department of Radiology, London (United Kingdom); UCL, Institute of Child Health, London (United Kingdom); Rosendahl, Karen [Great Ormond Street Hospital for Children, Department of Radiology, London (United Kingdom); UCL, Institute of Child Health, London (United Kingdom); Haukeland University Hospital, Department of Radiology, Bergen (Norway); University of Bergen, Department of Surgical Sciences, Bergen (Norway)

    2013-07-15

    Bony depressions at the wrist resembling erosions are frequently seen on MRI in healthy children. The accuracy of MRI in detecting early bony destruction is therefore questionable. We compared findings on MRI of the wrist in healthy children and those with juvenile idiopathic arthritis (JIA) to investigate markers for true disease. We compared the number and localisation of bony depressions at the wrist in 85 healthy children and 68 children with JIA, ages 5-15 years. The size of the wrist was assessed from a radiograph of the wrist performed on the same day as the MRI. No significant difference in the number of bony depressions in the carpal bones was seen between healthy children and children with JIA at any age. Depressions are found in similar locations in the two groups, except for a few sites, where bony depressions were seen exclusively in the JIA group, particularly at the CMC joints. The wrist was significantly smaller in children with JIA (P < 0.001). Using adult scoring systems and standard MR sequences in the assessment of bone destruction in children may lead to overstaging or understaging of disease. At present, standard MRI sequences cannot easily be used for assessment of early signs of erosions in children. (orig.)

  10. Evaluation of effects of different treatments for the wrist joints of subdominant hands using joint proprioception and writing time.

    Science.gov (United States)

    Hu, Chunying; Huang, Qiuchen; Yu, Lili; Hu, Yue; Rongming, Xia; Li, Zhou; Xiaojiao, Fu; Gu, Rui; Cui, Yao; Ge, Meng; Xu, Yanfeng; Liu, Jianfeng

    2016-05-01

    [Purpose] The purpose of this study was to examine immediate effects of strength training and NJF distal resistance training in wrist joints by using writing time and evaluation of proprioception using the JPE test. [Subjects and Methods] The subjects were 12 young healthy people (24.2 ± 3.1 y, 169.7 ± 6.5 cm, 65.3 ± 12.6 kg). Two isotonic contraction techniques were applied on the wrist joint: wrist joint extension muscle strength training (MST) and the wrist joint extension pattern of NJF. The uppercase English alphabet writing time and joint position errors of the left upper limb were measured before and after one intervention session of MST and NJF. [Results] The decrease in errors in wrist extension angle repetition and the writing time represented the improvement resulting from NJF. [Conclusion] This result suggests that the subdominant hands wrist joint proprioception and writing function can be improved by NJF together with proximal resistance training. PMID:27313380

  11. Chronic Lyme disease arthritis: review of the literature and report of a case of wrist arthritis.

    Science.gov (United States)

    Scerpella, T A; Engber, W D

    1992-05-01

    A case of Lyme arthritis with advanced degenerative changes localized to the midcarpal joint was treated with a limited wrist arthrodesis with relief of pain and improved function. Chronic Lyme arthritis occurs as the third stage of Lyme disease. Serologic testing and a history of a characteristic rash may be helpful in the diagnosis. Radiographic and histopathologic findings are nonspecific, with both degenerative and inflammatory characteristics. Intravenous antibiotics provide an effective treatment of chronic Lyme arthritis.

  12. Development of a New 2 DOF Lightweight Wrist for the Humanoid Robot ARMAR

    OpenAIRE

    Albers, Albert; Ottnad, Jens; Sander, Christian

    2010-01-01

    In this paper the development of a new concept for humanoid robot's lightweight wrist is presented. Especially the different steps of the development process are described. Based on the basic ideas, different analyses and simulations are conducted. A functional prototype is presented which is a kind of proof of the concept. Due to the design proposal obtained by the topology optimization for a fiber composite, a lightweight design is implemented in the CAD model. The next step will be the int...

  13. Wrist Hypothermia Related to Continuous Work with a Computer Mouse: A Digital Infrared Imaging Pilot Study

    OpenAIRE

    Jelena Reste; Tija Zvagule; Natalja Kurjane; Zanna Martinsone; Inese Martinsone; Anita Seile; Ivars Vanadzins

    2015-01-01

    Computer work is characterized by sedentary static workload with low-intensity energy metabolism. The aim of our study was to evaluate the dynamics of skin surface temperature in the hand during prolonged computer mouse work under different ergonomic setups. Digital infrared imaging of the right forearm and wrist was performed during three hours of continuous computer work (measured at the start and every 15 minutes thereafter) in a laboratory with controlled ambient conditions. Four people p...

  14. Design of a Spherical Wrist with Parallel Architecture: Application to Vertebrae of an Eel Robot

    OpenAIRE

    Chablat, Damien; Wenger, Philippe

    2007-01-01

    The design of a spherical wrist with parallel architecture is the object of this article. This study is part of a larger project, which aims to design and to build an eel robot for inspection of immersed piping. The kinematic analysis of the mechanism is presented first to characterize the singular configurations as well as the isotropic configurations. We add the design constraints related to the application, such as (i) the compactness of the mechanism, (ii) the symmetry of the elements in ...

  15. Analysis and design of a six-degree-of-freedom Stewart platform-based robotic wrist

    Science.gov (United States)

    Nguyen, Charles C.; Antrazi, Sami; Zhou, Zhen-Lei

    1991-01-01

    The kinematic analysis and implementation of a six degree of freedom robotic wrist which is mounted to a general open-kinetic chain manipulator to serve as a restbed for studying precision robotic assembly in space is discussed. The wrist design is based on the Stewart Platform mechanism and consists mainly of two platforms and six linear actuators driven by DC motors. Position feedback is achieved by linear displacement transducers mounted along the actuators and force feedback is obtained by a 6 degree of freedom force sensor mounted between the gripper and the payload platform. The robot wrist inverse kinematics which computes the required actuator lengths corresponding to Cartesian variables has a closed-form solution. The forward kinematics is solved iteratively using the Newton-Ralphson method which simultaneously provides a modified Jacobian Matrix which relates length velocities to Cartesian translational velocities and time rates of change of roll-pitch-yaw angles. Results of computer simulation conducted to evaluate the efficiency of the forward kinematics and Modified Jacobian Matrix are discussed.

  16. Complex Human Activity Recognition Using Smartphone and Wrist-Worn Motion Sensors.

    Science.gov (United States)

    Shoaib, Muhammad; Bosch, Stephan; Incel, Ozlem Durmaz; Scholten, Hans; Havinga, Paul J M

    2016-03-24

    The position of on-body motion sensors plays an important role in human activity recognition. Most often, mobile phone sensors at the trouser pocket or an equivalent position are used for this purpose. However, this position is not suitable for recognizing activities that involve hand gestures, such as smoking, eating, drinking coffee and giving a talk. To recognize such activities, wrist-worn motion sensors are used. However, these two positions are mainly used in isolation. To use richer context information, we evaluate three motion sensors (accelerometer, gyroscope and linear acceleration sensor) at both wrist and pocket positions. Using three classifiers, we show that the combination of these two positions outperforms the wrist position alone, mainly at smaller segmentation windows. Another problem is that less-repetitive activities, such as smoking, eating, giving a talk and drinking coffee, cannot be recognized easily at smaller segmentation windows unlike repetitive activities, like walking, jogging and biking. For this purpose, we evaluate the effect of seven window sizes (2-30 s) on thirteen activities and show how increasing window size affects these various activities in different ways. We also propose various optimizations to further improve the recognition of these activities. For reproducibility, we make our dataset publicly available.

  17. Masses and pseudomasses of the hand and wrist: MR findings in 134 cases

    Energy Technology Data Exchange (ETDEWEB)

    Capelastegui, A. [Magnetic Resonance OSATEK, Hospital de Galdacano, Vizcaya (Spain); Astigarraga, E.; Merino, A. [Magnetic Resonance OSATEK, Unit of Galdacano, Basque Country (Spain); Fernandez-Canton, G.; Saralegui, I.; Larena, J.A. [Magnetic Resonance OSATEK, Unit of Vitoria, Basque Country (Spain)

    1999-09-01

    Objective. To assess the utility of magnetic resonance imaging (MRI) in the investigation of palpable masses in the hand or wrist.< rate at head-abs-p1.lf>Design and patients. We retrospectively reviewed the MRI examinations and case records of 134 patients referred because of a palpable mass in the hand or wrist. MRI was performed on a 1.0 T magnet using an extremity coil. Intravenous gadolinium-DTPA was injected when considered appropriate.< rate at head-abs-p1.lf>Results and conclusions. MRI demonstrated the cause of the palpable mass in 126 cases (94.02%). Soft tissue neoplasms were found in 34 cases (25.37%). The majority were benign and included giant cell tumours of tendon sheath, lipomas and hemangiomas and had a characteristic appearance. There were three malignant tumours (myxoid liposarcoma, malignant fibroushistiocytoma and rhabdomyosarcoma). Ganglia were found in 36 cases (26.86%) and non-tumour tendon pathology in 31 cases (23.13%). Less common causes included articular diseases (5.97%) and anatomical variants (4.47%). No focal lesion was present in 8 cases (5.97%). In conclusion, MRI is an accurate diagnostic technique in patients who present with a palpable mass of the hand and wrist. (orig.)

  18. Development and use of a wrist fusion plate for children and adolescents.

    Science.gov (United States)

    Sodl, Jeffrey F; Kozin, Scott H; Kaufmann, Robert A

    2002-01-01

    Arthrodesis is a widely accepted treatment for several destructive disorders of the wrist joint. Previous literature has shown that compression plating is a reliable technique for achieving rigid fixation and fusion in adults. The goal of this study was to apply similar principles of adult wrist fusion to children, using a custom-designed fusion plate sized for children. Five children underwent wrist fusion using rigid fixation and dorsal plate application. Mean age at time of surgery was 16.4 years. The indication for surgery was paralysis (spinal cord injury) in three and spasticity (cerebral palsy and traumatic brain injury) in two. Surgery was performed through a dorsal approach and combined with carpectomy in the two patients with spasticity. Follow-up averaged 2.2 years and radiographs showed solid fusion and proper alignment of plate and screws. Improved stability and limb function were noted by patients and family. There were no instances of hardware failure, and plate removal has not been required. PMID:11856919

  19. MANAGEMENT OF WRIST GANGLIA BY TRANSFIXATION TECHNIQUE: OUR EXPERIENCE IN A RURAL TEACHING INSTITUTION

    Directory of Open Access Journals (Sweden)

    Sharma Man

    2014-06-01

    Full Text Available BACKGROUND: Ganglion is one of the commonly seen lesions in minor surgical practice. Treatment of wrist ganglia includes simple reassurance, watchful waiting, non-operative aspiration, injection, surgical excision and even sometimes advanced endoscopic excision. Although treatment is not often necessary, many patients seeking consultation ask for some form of definitive treatment. High incidence of recurrence is seen with cyst aspiration/injection or after surgical excision. Recurrence is the common problem, irrespective of the treatment modality. MATERIALS AND METHODS: This study evaluates results of a modified minimally invasive surgical technique used for the management of ganglia of the wrist. Thirty six wrist ganglia have been treated by using the transfixation technique. RESULTS: The successful results for the procedure were seen in 94.44% patients. Consequent to the procedure, an average of 2days off work were lost. Recurrence in the 2 year follow-up was seen in two patients. DISCUSSION: On comparing with other modalities this method is minimally invasive, cost-effective, less time consuming, low rate of recurrence and at the same time can be carried out under local anesthesia as a day case procedure and even not requiring any specific instrument and further this technique can be easily learned.

  20. Complex Human Activity Recognition Using Smartphone and Wrist-Worn Motion Sensors.

    Science.gov (United States)

    Shoaib, Muhammad; Bosch, Stephan; Incel, Ozlem Durmaz; Scholten, Hans; Havinga, Paul J M

    2016-01-01

    The position of on-body motion sensors plays an important role in human activity recognition. Most often, mobile phone sensors at the trouser pocket or an equivalent position are used for this purpose. However, this position is not suitable for recognizing activities that involve hand gestures, such as smoking, eating, drinking coffee and giving a talk. To recognize such activities, wrist-worn motion sensors are used. However, these two positions are mainly used in isolation. To use richer context information, we evaluate three motion sensors (accelerometer, gyroscope and linear acceleration sensor) at both wrist and pocket positions. Using three classifiers, we show that the combination of these two positions outperforms the wrist position alone, mainly at smaller segmentation windows. Another problem is that less-repetitive activities, such as smoking, eating, giving a talk and drinking coffee, cannot be recognized easily at smaller segmentation windows unlike repetitive activities, like walking, jogging and biking. For this purpose, we evaluate the effect of seven window sizes (2-30 s) on thirteen activities and show how increasing window size affects these various activities in different ways. We also propose various optimizations to further improve the recognition of these activities. For reproducibility, we make our dataset publicly available. PMID:27023543

  1. Effect of wrist position on the measurement of carpal indices on the lateral radiograph.

    Science.gov (United States)

    Koh, K H; Lee, H I; Lim, K S; Seo, J S; Park, M J

    2013-06-01

    The purpose of this study was to find out whether the carpal indices measured on lateral radiographs with a slightly malpositioned wrist are the same as those measured in the true neutral position. Lateral radiographic views of 25 wrists were taken with 5° intervals from 20° of flexion to 20° of extension. Most carpal indices measured in the flexed or extended position were significantly different from the wrist in zero flexion-extension, except scapholunate angle at 5° of extension and scaphocapitate angle at 5° and 10° of flexion. Starting from the flexed position, there was an average of -4.0° change in radioscaphoid angle, -1.0° in scapholunate angle, -1.0° in scaphocapitate angle, +3.0° in radiolunate angle, and +2.0° in lunocapitate angle for each 5° of extension with linear trends. The results from this study suggest that even minimal degrees of flexion-extension can affect the measurements of carpal indices on lateral radiographs.

  2. The effect of tendon loading on in-vitro carpal kinematics of the wrist joint.

    Science.gov (United States)

    Foumani, M; Blankevoort, L; Stekelenburg, C; Strackee, S D; Carelsen, B; Jonges, R; Streekstra, G J

    2010-06-18

    Measurements of in-vitro carpal kinematics of the wrist provide valuable biomechanical data. Tendon loading is often applied during cadaver experiments to simulate natural stabilizing joint compression in the wrist joint. The purpose of this study was to investigate the effect of tendon loading on carpal kinematics in-vitro. A cyclic movement was imposed on 7 cadaveric forearms while the carpal kinematics were acquired by a 4-dimensional rotational X-ray imaging system. The extensor- and flexor tendons were loaded with constant force springs of 50 N, respectively. The measurements were repeated without a load on the tendons. The effect of loading on the kinematics was tested statistically by using a linear mixed model. During flexion and extension, the proximal carpal bones were more extended with tendon loading. The lunate was on the average 2.0 degrees (p=0.012) more extended. With tendon loading the distal carpal bones were more ulnary deviated at each angle of wrist motion. The capitate was on the average 2.4 degrees (p=0.004) more ulnary deviated. During radioulnar deviation, the proximal carpal bones were more radially deviated with the lunate 0.7 degrees more into radial deviation with tendon loading (pcarpal kinematics during flexion-extension and radioulnar deviation.

  3. The Computation of All 4R Serial Spherical Wrists With an Isotropic Architecture

    CERN Document Server

    Chablat, Damien

    2007-01-01

    A spherical wrist of the serial type is said to be isotropic if it can attain a posture whereby the singular values of its Jacobian matrix are all identical and nonzero. What isotropy brings about is robustness to manufacturing, assembly, and measurement errors, thereby guaranteeing a maximum orientation accuracy. In this paper we investigate the existence of redundant isotropic architectures, which should add to the dexterity of the wrist under design by virtue of its extra degree of freedom. The problem formulation leads to a system of eight quadratic equations with eight unknowns. The Bezout number of this system is thus 2^8 = 256, its BKK bound being 192. However, the actual number of solutions is shown to be 32. We list all solutions of the foregoing algebraic problem. All these solutions are real, but distinct solutions do not necessarily lead to distinct manipulators. Upon discarding those algebraic solutions that yield no new wrists, we end up with exactly eight distinct architectures, the eight corre...

  4. The Computation of All 4R Serial Spherical Wrists With an Isotropic Architecture

    CERN Document Server

    Chablat, Damien

    2003-01-01

    A spherical wrist of the serial type with n revolute (R) joints is said to be isotropic if it can attain a posture whereby the singular values of its Jacobian matrix are all equal to sqrt(n/3). What isotropy brings about is robustness to manufacturing, assembly, and measurement errors, thereby guaranteeing a maximum orientation accuracy. In this paper we investigate the existence of redundant isotropic architectures, which should add to the dexterity of the wrist under design by virtue of its extra degree of freedom. The problem formulation, for, leads to a system of eight quadratic equations with eight unknowns. The Bezout number of this system is thus 2^8=256, its BKK bound being 192. However, the actual number of solutions is shown to be 32. We list all solutions of the foregoing algebraic problem. All these solutions are real, but distinct solutions do not necessarily lead to distinct manipulators. Upon discarding those algebraic solutions that yield no new wrists, we end up with exactly eight distinct ar...

  5. DIEP breast reconstruction following multiple abdominal liposuction procedures

    OpenAIRE

    Farid, Mohammed; Nicholson, Simon; Kotwal, Ashutosh; Akali, Augustine

    2014-01-01

    Objective: Previous abdominal wall surgery is viewed as a contraindication to abdominal free tissue transfer. We present two patients who underwent multiple abdominal liposuction procedures, followed by successful free deep inferior epigastric artery perforator flap. We review the literature pertaining to reliability of abdominal free flaps in those with previous abdominal surgery. Methods: Review of case notes and radiological investigations of two patients, and a PubMed search using the ter...

  6. ARM User Survey Report

    Energy Technology Data Exchange (ETDEWEB)

    Roeder, LR

    2010-06-22

    The objective of this survey was to obtain user feedback to, among other things, determine how to organize the exponentially growing data within the Atmospheric Radiation Measurement (ARM) Climate Research Facility, and identify users’ preferred data analysis system. The survey findings appear to have met this objective, having received approximately 300 responses that give insight into the type of work users perform, usage of the data, percentage of data analysis users might perform on an ARM-hosted computing resource, downloading volume level where users begin having reservations, opinion about usage if given more powerful computing resources (including ability to manipulate data), types of tools that would be most beneficial to them, preferred programming language and data analysis system, level of importance for certain types of capabilities, and finally, level of interest in participating in a code-sharing community.

  7. Robot arm apparatus

    Science.gov (United States)

    Nachbar, Henry D.

    1992-01-01

    A robot arm apparatus is provided for inspecting and/or maintaining an interior of a steam generator which has an outside wall and a port for accessing the interior of the steam generator. The robot arm apparatus includes a flexible movable conduit for conveying inspection and/or maintenance apparatus from outside the steam generator to the interior of the steam generator. The flexible conduit has a terminal working end which is translated into and around the interior of the steam generator. Three motors located outside the steam generator are employed for moving the terminal working end inside the steam generator in "x", "y", and "z" directions, respectively. Commonly conducted inspection and maintenance operations include visual inspection for damaged areas, water jet lancing for cleaning sludge deposits, core boring for obtaining sludge deposits, and scrubbing of internal parts.

  8. Mechanical energy generation and transfer in the racket arm during table tennis topspin backhands.

    Science.gov (United States)

    Iino, Yoichi; Kojima, Takeji

    2016-06-01

    The ability to generate a high racket speed and a large amount of racket kinetic energy on impact is important for table tennis players. The purpose of this study was to understand how mechanical energy is generated and transferred in the racket arm during table tennis backhands. Ten male advanced right-handed table tennis players hit topspin backhands against pre-impact topspin and backspin balls. The joint kinetics at the shoulder, elbow and wrist of the racket arm was determined using inverse dynamics. A majority of the mechanical energy of the racket arm acquired during forward swing (65 and 77% against topspin and backspin, respectively) was due to energy transfer from the trunk. Energy transfer by the shoulder joint force in the vertical direction was the largest contributor to the mechanical energy of the racket arm against both spins and was greater against backspin than against topspin (34 and 28%, respectively). The shoulder joint force directed to the right, which peaked just before impact, transferred additional energy to the racket. Our results suggest that the upward thrust of the shoulder and the late timing of the axial rotation of the upper trunk are important for an effective topspin backhand.

  9. Mechanical energy generation and transfer in the racket arm during table tennis topspin backhands.

    Science.gov (United States)

    Iino, Yoichi; Kojima, Takeji

    2016-06-01

    The ability to generate a high racket speed and a large amount of racket kinetic energy on impact is important for table tennis players. The purpose of this study was to understand how mechanical energy is generated and transferred in the racket arm during table tennis backhands. Ten male advanced right-handed table tennis players hit topspin backhands against pre-impact topspin and backspin balls. The joint kinetics at the shoulder, elbow and wrist of the racket arm was determined using inverse dynamics. A majority of the mechanical energy of the racket arm acquired during forward swing (65 and 77% against topspin and backspin, respectively) was due to energy transfer from the trunk. Energy transfer by the shoulder joint force in the vertical direction was the largest contributor to the mechanical energy of the racket arm against both spins and was greater against backspin than against topspin (34 and 28%, respectively). The shoulder joint force directed to the right, which peaked just before impact, transferred additional energy to the racket. Our results suggest that the upward thrust of the shoulder and the late timing of the axial rotation of the upper trunk are important for an effective topspin backhand. PMID:27111711

  10. ARMin III – Arm Therapy Exoskeleton with an Ergonomic Shoulder Actuation

    Directory of Open Access Journals (Sweden)

    Tobias Nef

    2009-01-01

    Full Text Available Rehabilitation robots have become important tools in stroke rehabilitation. Compared to manual arm training, robot-supported training can be more intensive, of longer duration and more repetitive. Therefore, robots have the potential to improve the rehabilitation process in stroke patients. Whereas a majority of previous work in upper limb rehabilitation robotics has focused on end-effector-based robots, a shift towards exoskeleton robots is taking place because they offer a better guidance of the human arm, especially for movements with a large range of motion. However, the implementation of an exoskeleton device introduces the challenge of reproducing the motion of the human shoulder, which is one of the most complex joints of the body. Thus, this paper starts with describing a simplified model of the human shoulder. On the basis of that model, a new ergonomic shoulder actuation principle that provides motion of the humerus head is proposed, and its implementation in the ARMin III arm therapy robot is described. The focus lies on the mechanics and actuation principle. The ARMin III robot provides three actuated degrees of freedom for the shoulder and one for the elbow joint. An additional module provides actuated lower arm pro/supination and wrist flexion/extension. Five ARMin III devices have been manufactured and they are currently undergoing clinical evaluation in hospitals in Switzerland and in the United States.

  11. Kiikuv maja / Anu Arm

    Index Scriptorium Estoniae

    Arm, Anu

    2006-01-01

    Eesti Kunstiakadeemia esimese kursuse arhitektuuriüliõpilaste II semestri töö. Juhendaja arhitekt Andres Alver, ehitamise Pedaspeale organiseeris suvepraktika juhendaja arhitekt Jaan Tiidemann. Autor Anu Arm, kaasa töötasid ja valmis ehitasid: Ott Alver, Maarja Elm, Mari Hunt, Alvin Järving, Marten Kaevats, Riho Kerge, Reedik Poopuu, Anu Põime, Helen Rebane, Kaisa Saarva, Martin Tago, Reet Volt. Valmis: 19. VIII 2006

  12. Human arm may act as antenna

    Science.gov (United States)

    Gaddie, J. C.; Wolfram, R. T.

    1978-01-01

    Wrist strap with copper strips is used as coupler of radio-frequency energy. Wires at midpoints of strips lead to radio-frequency device that acts as transmitter or receiver. Varying widths of copper strips produces somewhat different characteristics.

  13. Surface EMG pattern recognition for real-time control of a wrist exoskeleton

    Directory of Open Access Journals (Sweden)

    Khokhar Zeeshan O

    2010-08-01

    Full Text Available Abstract Background Surface electromyography (sEMG signals have been used in numerous studies for the classification of hand gestures and movements and successfully implemented in the position control of different prosthetic hands for amputees. sEMG could also potentially be used for controlling wearable devices which could assist persons with reduced muscle mass, such as those suffering from sarcopenia. While using sEMG for position control, estimation of the intended torque of the user could also provide sufficient information for an effective force control of the hand prosthesis or assistive device. This paper presents the use of pattern recognition to estimate the torque applied by a human wrist and its real-time implementation to control a novel two degree of freedom wrist exoskeleton prototype (WEP, which was specifically developed for this work. Methods Both sEMG data from four muscles of the forearm and wrist torque were collected from eight volunteers by using a custom-made testing rig. The features that were extracted from the sEMG signals included root mean square (rms EMG amplitude, autoregressive (AR model coefficients and waveform length. Support Vector Machines (SVM was employed to extract classes of different force intensity from the sEMG signals. After assessing the off-line performance of the used classification technique, the WEP was used to validate in real-time the proposed classification scheme. Results The data gathered from the volunteers were divided into two sets, one with nineteen classes and the second with thirteen classes. Each set of data was further divided into training and testing data. It was observed that the average testing accuracy in the case of nineteen classes was about 88% whereas the average accuracy in the case of thirteen classes reached about 96%. Classification and control algorithm implemented in the WEP was executed in less than 125 ms. Conclusions The results of this study showed that

  14. Performance adaptive training control strategy for recovering wrist movements in stroke patients: a preliminary, feasibility study

    Directory of Open Access Journals (Sweden)

    Sandini Giulio

    2009-12-01

    Full Text Available Abstract Background In the last two decades robot training in neuromotor rehabilitation was mainly focused on shoulder-elbow movements. Few devices were designed and clinically tested for training coordinated movements of the wrist, which are crucial for achieving even the basic level of motor competence that is necessary for carrying out ADLs (activities of daily life. Moreover, most systems of robot therapy use point-to-point reaching movements which tend to emphasize the pathological tendency of stroke patients to break down goal-directed movements into a number of jerky sub-movements. For this reason we designed a wrist robot with a range of motion comparable to that of normal subjects and implemented a self-adapting training protocol for tracking smoothly moving targets in order to facilitate the emergence of smoothness in the motor control patterns and maximize the recovery of the normal RoM (range of motion of the different DoFs (degrees of Freedom. Methods The IIT-wrist robot is a 3 DoFs light exoskeleton device, with direct-drive of each DoF and a human-like range of motion for Flexion/Extension (FE, Abduction/Adduction (AA and Pronation/Supination (PS. Subjects were asked to track a variable-frequency oscillating target using only one wrist DoF at time, in such a way to carry out a progressive splinting therapy. The RoM of each DoF was angularly scanned in a staircase-like fashion, from the "easier" to the "more difficult" angular position. An Adaptive Controller evaluated online performance parameters and modulated both the assistance and the difficulty of the task in order to facilitate smoother and more precise motor command patterns. Results Three stroke subjects volunteered to participate in a preliminary test session aimed at verify the acceptability of the device and the feasibility of the designed protocol. All of them were able to perform the required task. The wrist active RoM of motion was evaluated for each patient at the

  15. Age dependent T2 changes of bone marrow in pediatric wrist MRI

    Energy Technology Data Exchange (ETDEWEB)

    Shabshin, Nogah [Chaim Sheba Medical Center, Department of Diagnostic Imaging, Tel-HaShomer (Israel); Schweitzer, Mark E. [The Ottawa Hospital, The University of Ottawa, Department of Diagnostic Imaging, Ottawa (Canada)

    2009-12-15

    Hyperintensity of the bone marrow on fluid-sensitive sequences can be seen on magnetic resonance imaging (MRI) during childhood, even in the absence of bone pathology. They can be related to hematopoietic marrow, normal and abnormal bone remodeling. We sought to investigate whether hyper intensity of the bone marrow on MRI of the wrist is age-dependent and to evaluate if this signal follows a consistent age-related pattern. Thirty-one wrist 1.5 T MR images of children (7-18 years) without suspected bone pathology were evaluated for foci of hyperintense bone marrow seen on fluid-sensitive coronal sequences using a scale of 1-3. Correlation of frequency, location and intensity of these foci with age was obtained. Results were analyzed for distribution in single bones and in the following regions: distal forearm, first/second carpal rows, and metacarpal bases. A total of 448 bones were evaluated. Eighty-eight out of 448 (21 out of 31 wrists) showed hyperintense bone marrow seen on fluid-sensitive sequences. The distribution was: radius in 19, ulna in 19, first metacarpal base in 11, scaphoid in 9, lunate in 6, pisiform in 6, and fifth metacarpal base in 1. The involvement of the first and second carpal rows and the metacarpal bases was almost similar (13, 12, and 12 respectively). In the distal forearm, the intensity was similar to or higher than that in the wrist (2.2 vs. 2.0). Frequency decreased with age (100% at 7-9 and 25% at 16-18 years). Foci of hyperintense bone marrow seen on fluid-sensitive sequences can be seen on MRI of the wrist during childhood even without apparent symptoms. It shows a consistent pattern with maturation: frequency and intensity decrease and there is distal-to-proximal resolution. This may be a normal finding that may represent normal bone remodeling or decreasing hematopoietic marrow and should not be confused with pathological bone marrow edema. (orig.)

  16. Abdominal Compartment Syndrome and Intra-abdominal Ischemia in Patients with Severe Acute Pancreatitis

    NARCIS (Netherlands)

    Smit, M.; Buddingh, K. T.; Bosma, B; Nieuwenhuijs, V B; Hofker, H.S.; Zijlstra, J.G.

    2016-01-01

    INTRODUCTION: Severe acute pancreatitis may be complicated by intra-abdominal hypertension (IAH), abdominal compartment syndrome (ACS), and intestinal ischemia. The aim of this retrospective study is to describe the incidence, treatment, and outcome of patients with severe acute pancreatitis and ACS

  17. Abdominal binders may reduce pain and improve physical function after major abdominal surgery - a systematic review

    DEFF Research Database (Denmark)

    Rothman, Josephine Philip; Gunnarsson, Ulf; Bisgaard, Thue

    2014-01-01

    . The PubMed, EMBASE and Cochrane databases were searched for studies on the use of abdominal binders after abdominal surgery or abdominoplasty. All types of clinical studies were included. Two independent assessors evaluated the scientific quality of the studies. The primary outcomes were pain, seroma...

  18. Prediction of Impact Shock Vibrations at Tennis Player's Wrist Joint: Comparison between Conventional Weight Racket and Light Weight Racket with Super Large Head Size

    Science.gov (United States)

    Kawazoe, Yoshihiko; Takeda, Yukihiro; Nakagawa, Masamichi; Casolo, Federico; Tomosue, Ryoso; Yoshinari, Keiko

    The lightweight racket with handle-light configuration and large head size is recent tendency of high-tech tennis rackets, increasing power or post-impact ball velocity with an increasing racket swing speed. This paper investigated the performance of lightweight tennis racket with super-large head size in terms of feel or comfort. It predicted the effect of the mass and mass distribution of super-large sized rackets on the impact shock vibrations of the racket handle and the player's wrist joint when a player hits a flat forehand drive. The prediction is based on the identification of the racket characteristics, the damping of the racket-arm system, equivalent mass of the player's arm system and the approximate nonlinear impact analysis in tennis. A super-light weight balanced racket (mass: 292 g, the center of gravity LG: 363 mm from the butt end) and a conventional weight and weight balanced racket (349 g, LG: 323 mm) are selected as representatives. They are the super-large sized rackets made of carbon graphite with a head size of 120 square inches and the same geometry. The result showed that the shock vibration of the super-light weight balanced racket with super-large sized head is much larger than that of the conventional weight balanced type racket. It also showed that the sweet area of the former in terms of the shock vibration shifts from the center to the topside on the racket face compared to the latter. This is because the location of the grip on the racket handle is further from the location of the node on the handle of the first mode of super-light racket than that of the conventional weight racket.

  19. Postoperative abdominal complications after cardiopulmonary bypass

    Directory of Open Access Journals (Sweden)

    Dong Guohua

    2012-10-01

    Full Text Available Abstract Background To summarize the diagnostic and therapeutic experiences on the patients who suffered abdominal complications after cardiovascular surgery with cardiopulmonary bypass(CPB. Methods A total of 2349 consecutive patients submitted to cardiovascular surgery with CPB in our hospital from Jan 2004 to Dec 2010 were involved. The clinical data of any abdominal complication, including its incidence, characters, relative risks, diagnostic measures, medical or surgical management and mortality, was retrospectively analyzed. Results Of all the patients, 33(1.4% developed abdominal complications postoperatively, including 11(33.3% cases of paralytic ileus, 9(27.3% of gastrointestinal haemorrhage, 2(6.1% of gastroduodenal ulcer perforation, 2(6.1% of acute calculus cholecystitis, 3(9.1% of acute acalculus cholecystitis, 4(12.1% of hepatic dysfunction and 2(6.1% of ischemia bowel diseases. Of the 33 patients, 26 (78.8% accepted medical treatment and 7 (21.2% underwent subsequent surgical intervention. There were 5(15.2% deaths in this series, which was significantly higher than the overall mortality (2.7%. Positive history of peptic ulcer, advanced ages, bad heart function, preoperative IABP support, prolonged CPB time, low cardiac output and prolonged mechanical ventilation are the risk factors of abdominal complications. Conclusions Abdominal complications after cardiovascular surgery with CPB have a low incidence but a higher mortality. Early detection and prompt appropriate intervention are essential for the outcome of the patients.

  20. Abdominal tuberculosis, clinical-radiological revision

    International Nuclear Information System (INIS)

    We retrospectively evaluated the clinical charts and diagnostic images of hospitalised patients with histological or bacteriologic demonstration of abdominal tuberculosis (TB) including those with probable abdominal TB, who had pulmonary TB and radiologic findings highly suggestive of abdominal TB with favourable response to treatment. Cases with genitourinary TB were excluded. We found 24 patients with an average age of 25 yrs. In some cases this entity was not suspected on the imaging studies, and diagnosis was made on surgery. The most frequent symptoms were: abdominal pain, diarrhoea, fever, vomiting, weight loss and abdominal mass. Active pulmonary TB was demonstrated on 8 cases (33%) Peritoneal presentation was the most frequent (54%) with septated or simple ascites, cystic ascites or pseudocysts within bowel loops. Mesenteric involvement (21 %) showed adenopathy or masses identified with CT. Intestinal forms (17%) showed pseudo-polyps on terminal ileum and ulcers on ileum, cecum and colon. We found one case with diffuse ulcerative involvement of the colon. Two cases showed hepatic involvement, one with an abscess and a tuberculosis Cole cystitis, with pyloric syndrome due to fibrosis

  1. Intra-Abdominal Hypertension and Abdominal Compartment Syndrome in Association with Ruptured Abdominal Aortic Aneurysm in the Endovascular Era: Vigilance Remains Critical

    Directory of Open Access Journals (Sweden)

    Matthew C. Bozeman

    2012-01-01

    In this review, we describe published experience with IAH and ACS complicating abdominal vascular catastrophes, experience with ACS complicating endovascular repair of rAAAs, and techniques for management of the abdominal wound. Vigilance and appropriate management of IAH and ACS remains critically important in decreasing morbidity and optimizing survival following catastrophic intra-abdominal vascular events.

  2. A Standardized Protocol for Cone-Beam Computed Tomography of the Hand and Wrist in Rheumatoid Arthritis

    Directory of Open Access Journals (Sweden)

    D.V. Makarova

    2015-12-01

    Full Text Available The aim of the investigation was to develop a standardized protocol for description of the results of cone-beam computed tomography (CBCT of the hand and wrist in rheumatoid arthritis. Materials and Methods. The results of 112 hand and wrist CBCT examinations (n=56 were analyzed in patients aged from 36 to 67 with medium-active seropositive rheumatoid arthritis in anamnesis. The hand and wrist CBCT was carried out using a NewTom 5G cone-beam computed unit (QR s.r.l., Italy having a 200×250 mm flat-panel detector, 180×160 mm field of view (maximum, and a 360° gantry rotation around the region of interest. The hand and wrist scanning was carried out from the distal metaphysis of the forearm bones to the nail ends of the distal phalanges of the fingers. Scan mode — patient scan (exposure time — 3.6 s, X-ray tube boosting voltage — 110 kW, current — 0.6‒0.8 mA, scan pattern — regular scan, scan time — 18 s. The CBCT examinations of the wrists and hands were performed using special-purpose setups allowing complete coverage of the region of interest. Results. A standardized protocol was designed for the description of hand and wrist cone-beam examination that documents all the major changes resulting from rheumatoid arthritis: soft tissue thickening, erosions and cystic-like changes, osteoporosis, narrowing of the joint spaces, incomplete dislocations, bone deformities and areas of osteolysis. Significant changes are recorded in point form, according to the Sharp or SENS methods. Application of the standardized protocol allows unification of the structuring of the examination description, and facilitates X-ray assessment of changes in the hand and wrist during CBCT in patients with rheumatoid arthritis.

  3. Thoracic and abdominal blastomycosis in a horse.

    Science.gov (United States)

    Toribio, R E; Kohn, C W; Lawrence, A E; Hardy, J; Hutt, J A

    1999-05-01

    A 5-year-old Quarter Horse mare was examined because of lethargy, fever, and weight loss of 1 month's duration. Thoracic auscultation revealed decreased lung sounds cranioventrally. Thoracic ultrasonography revealed bilateral anechoic areas with hyperechoic strands, consistent with pleural effusion and fibrin tags. A large amount of free fluid was evident during abdominal ultrasonography. Abnormalities included anemia, hyperproteinemia, hyperglobulinemia, hyperfibrinogenemia, and hypoalbuminemia. Thoracic radiography revealed alveolar infiltrates in the cranial and caudoventral lung fields. A cavitary mass, consistent with an abscess, could be seen caudodorsal to the crura of the diaphragm. Ultrasonographic evaluation of this area revealed a hypoechoic mass with septations. Bilateral thoracocentesis was performed. Bacterial culture of the pleural fluid did not yield growth, but Blastomyces dermatitidis was isolated from pleural fluid, abdominal fluid, and an aspirate of the abscess. The mare was euthanatized, and a diagnosis of thoracic and abdominal blastomycosis was confirmed at necropsy. PMID:10319179

  4. Psychosocial factors and childhood recurrent abdominal pain.

    Science.gov (United States)

    Boey, Christopher Chiong-Meng; Goh, Khean-Lee

    2002-12-01

    Recurrent abdominal pain in children is not a single condition but a description of a wide spectrum of clinical manifestations, some of which fit into a definite pattern, such as the irritable bowel syndrome, while others do not. Organic disorders may be present, but in the majority of children they cannot be detected. Although children with recurrent abdominal pain do not generally have psychological or psychiatric illness, there is a growing body of evidence to suggest that psychosocial stress plays an important role in this condition. This review will look into some of this evidence. The precise pathophysiology that results in abdominal pain is still not clearly understood, but the current belief is that visceral hypersensitivity or hyperalgesia and changes in the brain-gut axis linking the central and enteric nervous systems are important mechanisms. PMID:12423267

  5. [Pediatric Abdominal Pain – Harmless or Harmful?].

    Science.gov (United States)

    Furlano, Raoul Ivano

    2016-04-27

    Abdominal pain is a very common pediatric complaint. In the majority of cases there is no life-threatening pathology behind this symptom, but a functional disease. However, all-day activities of children and adolescents are often limited, frequent absences from school, and general physician/ pediatrician office visits with often unnecessary diagnostic and therapies are registered. Once an organic etiology of the abdominal pain is excluded by a thoroughly medical history taking and physical examination, the first steps for a successful alleviation of the pain is the reassurance of the patients and their family that there is no life-threatening pathology. There is evidence that cognitive-behavioral therapy may be useful in improving pain and disability outcome in the short term. There is no evidence for pharmacological, dietetic, or complementary intervention in the treatment of chronic functional abdominal pain. PMID:27120211

  6. Indium 111 leucocyte scintigraphy in abdominal sepsis

    International Nuclear Information System (INIS)

    We have studied the clinical utility of indium 111 autologous leucocyte scintigraphy retrospectively in 45 patients presenting with suspected intra-abdominal sepsis. The sensitivity was 95% (21/22) and the specificity was 91% (21/23). Some 34 of the studies (17 positive and 17 negative) were considered helpful in furthering patient management (76%) and 8, unhelpful (18%). In 3, the study results were misleading and led to inappropriate treatment. Indium 111 scintigraphy, whether positive or negative, provides information in patients with suspected intra-abdominal sepsis upon which therapeutic decisions can be based. (orig.)

  7. Damage control resuscitation for abdominal war injury

    Directory of Open Access Journals (Sweden)

    Wei-wei DING

    2014-03-01

    Full Text Available In recent years, the concept of comprehensive treatment for military trauma has been comprehensively updated. The application of damage control surgery has significantly improved the clinical outcome of severe abdominal injury. With appropriate surgical intervention, post-trauma fluid resuscitation plays an increasingly important role in the treatment of abdominal injury. The damage control resuscitation strategy addresses the importance of permissive hypotension and haemostatic resuscitation for patients with severe trauma, under the guidance of damage control surgical principle. DOI: 10.11855/j.issn.0577-7402.2014.03.02

  8. Penetrating abdominal injuries in children in Nigeria.

    Science.gov (United States)

    Ameh, E A; Nmadu, P T

    1999-09-01

    This is a report of a retrospective study of 24 children managed for penetrating abdominal injury over 10 years, and it represents 34% of all abdominal injuries in children in that period. Falls onto sharp objects within and around the home were responsible for ten of the injuries, seven were injured by animal horns and four were sporting injuries. Violence and road traffic accidents were uncommon. Most patients (67%) had evisceration of omentum or intestine, and one of these was found at laparotomy to have a jejuno-jejunal intussusception. Seven children had injury to hollow viscera. There were three deaths, one each from overwhelming sepsis, tetanus and haemorrhage.

  9. Aggressive malignant abdominal mesothelioma: Clinical report

    International Nuclear Information System (INIS)

    A 32-year-old Filipino female, working as an x-ray technician, presented to the Emergency Room (ER) with acute abdominal pain for one day. The pain was mainly on the left side and left hypochondrium. She had recurring abdominal pain before but not significant to worry her. She also complained of abdominal distension, which she noticed one week ago. Abdominal examination revealed fullness in the left hypochondrium with marked tenderness but negative rebound. Abdominal ultrasound (US) showed a huge mass mainly in the left hypochondrium. The origin of the mass cannot be identified by US. A computerized tomography scan showed a mass in the left side of the abdomen crossing the midline with a necrotic centre. The hospital course of the patient runs smoothly, and she was discharged after 7-days and referred to an Oncology Center. Abdominal mesothelioma is a neoplasm arising from the mesothelial surface lining the abdominal cavity. It is less frequent than that of the pleura. It is a rapidly growing and fatal malignancy with a median survival of less than 1-year. The relation between pleural malignant mesothelioma and asbestos is well recognized since it was described in 19602 but implication of asbestos exposure in the etiology of the peritoneal type is less obvious. This patient history is giving no obvious exposure to asbestos but as she is working in the Radiology Department as an x-ray technician she is well exposed to x-ray, but the effect of radioactivity on induction of mesothelioma is still disputed.4 There are several reports linking malignant mesothelioma to radioactivity due to radiation therapy.The fibrous mesothelioma (sarcomatous), as in this case, which is difficult to diagnose microscopically, looks like a fibroma, unless helped by tissue culture. The treatment options of malignant mesothelioma include surgery, intraperitoneal chemotherapy and whole abdominal radiation or multimodality therapy, which were suggested that might prolong the survival in

  10. An unusual cause of abdominal pain.

    Science.gov (United States)

    Terneu, S; Verhelst, D; Thys, F; Ketelslegers, E; Hantson, P; Wittebole, X

    2003-01-01

    A 36-year-old woman presented to the Emergency Room because of abdominal pain associated with hematuria and red blood blending to stool. On admission, the physical examination revealed abdominal tenderness and diffuse cutaneous hematoma. The laboratory findings showed abnormal clotting tests with high International Normalised Ratio (INR) and prolonged activated partial thromboplastin time. Hemoperitoneum and ureteral hematoma were noted on the abdomen computed tomography. The patient confessed she had ingested difenacoum for several weeks. All the symptoms resolved with fresh frozen plasma perfusion and vitamin K. PMID:14635532

  11. ABDOMINAL SCAR ENDOMETRIOSIS: REPORT OF 28 CASES

    Institute of Scientific and Technical Information of China (English)

    向阳; 郎景和; 王友芳; 黄荣丽; 连丽娟

    1995-01-01

    Twenty-eight cases of abdominal scar endometriosis from Janurary,1989 to December,1993 are reported.Of these patients,twenty-four underwent term cesarean section,and four underwent a midtrimester abortion by abdominal hysterotomy.The majority of patients manifested symptoms 1 year after the operation.The most common was a painful mass of scar tissue that became swollen and tender during menstruation.The pathogenesis,diagnosis and treatment are discussed.In correlation with the pathological findings,the effects of drug therapy are evaluated.It was found that surgical excision is the best method of treatment.

  12. Systemic lupus erythematosus : abdominal radiologic findings

    Energy Technology Data Exchange (ETDEWEB)

    Oh, Jae Cheon; Cho, On Koo; Lee, Yong Joo; Bae, Jae Ik; Kim, Yong Soo; Rhim, Hyun Chul; Ko, Byung Hee [Hanyang Univ. College of Medicine, Seoul (Korea, Republic of)

    1999-06-01

    Systemic lupus erythematosus(SLE) is a systemic disease of unknown etiology. Its main pathology is vasculitis and serositis, due to deposition of the immune complex or antibodies. Most findings are nonspecific ; abdominal manifestations include enteritis, hepatomegaly, pancreatic enlargement, serositis, lymphadenopathy, splenomegaly, nephritis, interstitial cystitis, and thrombophlebitis. We described radiologic findings of various organ involvement of SLE; digestive system, serosa, reticuloendothelial system, urinary system, and venous system. Diagnosis of SLE was done according to the criteria of American Rheumatism Association. Understanding of the variable imaging findings in SLE may be helpful for the early detection of abdominal involvement and complications.

  13. Position of arm and forearm, and elbow flexion during performance of the sculling technique: Technical recommendation versus actual performance

    Directory of Open Access Journals (Sweden)

    Lara Elena Gomes

    2014-03-01

    Full Text Available Sculling motion is a swimming technique executed in a vertical position with the head above the water's surface and, based on the technical recommendation, should be performed maintaining an elbow flexion angle of 90°, arms kept stationary while the forearms move. In order to verify if this recommendation is indeed realistic, the aim of this study was to describe the elbow flexion angle ant its angular velocity, linear speed and range of motion of the shoulder, elbow and wrist during the sculling motion. Data were calculated using three-dimensional kinematic process from underwater video images of ten athletes of synchronized swimming. The results indicate that the arm is relatively stationary and the forearm moves, which agrees with the technical recommendation. However, the elbow flexes and extends, which contradicts the technical recommendation. These findings should be considered when this action is practiced, especially in synchronized swimming, in which sculling motion is a fundamental technique.

  14. Ultrasound Color Doppler Image Segmentation and Feature Extraction in MCP and Wrist Region in Evaluation of Rheumatoid Arthritis.

    Science.gov (United States)

    Snekhalatha, U; Muthubhairavi, V; Anburajan, M; Gupta, Neelkanth

    2016-09-01

    The present study focuses on automatically to segment the blood flow pattern of color Doppler ultrasound in hand region of rheumatoid arthritis patients and to correlate the extracted the statistical features and color Doppler parameters with standard parameters. Thirty patients with rheumatoid arthritis (RA) and their total of 300 joints of both the hands, i.e., 240 MCP and 60 wrists were examined in this study. Ultrasound color Doppler of both the hands of all the patients was obtained. Automated segmentation of color Doppler image was performed using color enhancement scaling based segmentation algorithm. The region of interest is fixed in the MCP joints and wrist of the hand. Features were extracted from the defined ROI of the segmented output image. The color fraction was measured using Mimics software. The standard parameters such as HAQ score, DAS 28 score, and ESR was obtained for all the patients. The color fraction tends to be increased in wrist and MCP3 joints which indicate the increased blood flow pattern and color Doppler activity as part of inflammation in hand joints of RA. The ESR correlated significantly with the feature extracted parameters such as mean, standard deviation and entropy in MCP3, MCP4 joint and the wrist region. The developed automated color image segmentation algorithm provides a quantitative analysis for diagnosis and assessment of RA. The correlation study between the color Doppler parameters with the standard parameters provides moral significance in quantitative analysis of RA in MCP3 joint and the wrist region. PMID:27449351

  15. Surgical excision of wrist ganglia; literature review and nine-year retrospective study of recurrence and patient satisfaction

    Directory of Open Access Journals (Sweden)

    Surjit Lidder

    2009-06-01

    Full Text Available The main options for the treatment of wrist ganglia are reassurance, aspiration, arthroscopic resection and open excision. Variations within each option have been described and the literature is clouded by widespread variability in the results reported. We present the results of our own long-term retrospective study, review the literature and question the surgical risks and demands placed on healthcare resources. A retrospective review of the surgical results of dorsal and volar wrist ganglia excision between January 1998 and March 2005 was undertaken at a single institution. Of the 152 patients in this consecutive series, 117 (77% patients responded to a telephone questionnaire. The mean length of follow-up in this series of 117 patients was 4.2 years (range 1.5-8.7 years. The overall recurrence rate following excision of all wrist ganglia in this series was 41.8 %. When looking just at volar ganglia, the risk of recurrence is higher at 46.8%. Should the ganglion recur, the risk of developing a moderate to severely tender scar is 34.6% and the risk of developing an unsightly scar is 8.2%. This study questions the effectiveness of surgical excision in the treatment of wrist ganglia when performed by a mixture of surgeons in that the recurrence rates are very similar to the rates seen in studies that merely observe or aspirate wrist ganglia. We propose that for symptomatic ganglia, specialists in hand surgery may be more appropriate at treating such a pathology.

  16. Osteoid osteoma as an unusual cause of wrist pain – A case report and review of literature

    Science.gov (United States)

    Rajeev, Aysha; Ali, Mohammed; Ralte, Angela; Chakaravathy, Jaganath

    2014-01-01

    INTRODUCTION Wrist pain is very common and there are several causes for this condition. It is extremely important to establish an accurate diagnosis so that appropriate treatment can be directed at the cause. PRESENTATION OF CASE We describe a case of a young man who presented to us with wrist pain of insidious onset. He had previous (ganglion) excision from the same wrist. Clinically there was tenderness in the base of second metacarpal with no swelling. The radiograph and MRI scan were suggestive of Brodie's abscess. But surgical exploration and subsequent histopathology showed evidence of osteoid osteoma. The patient had full resolution of symptoms after 3 months of surgery. DISCUSSION Osteoid osteoma of the wrist bones is rare. They usually present with atypical pain. The diagnosis of osteoid osteoma is challenging and often missed. A high index of suspicion and appropriate investigations are essential in the diagnosis. CONCLUSION We conclude that the diagnosis of osteoid osteoma should be considered in case of wrist pain of unknown aetiology with cystic lesions in the carpal or metacarpal bones. PMID:25460430

  17. Wrist injuries in young adults: The diagnostic impact of CT and MRI

    International Nuclear Information System (INIS)

    Purpose: To evaluate the diagnostic impact of MRI or/and multidetector CT in young patients with wrist injury and inconclusive or negative clinical examination and X-rays and to analyze variations in imaging strategies between a district general hospital (GH) and a university hospital (UH). Materials and methods: A retrospective analysis of 34 young patients (mean age 23 years) with wrist trauma who underwent CT or/and MRI was performed. The injury was acute in 24, and chronic in 10 patients. Twenty-two patients were from a GH and 12 from a UH. Two experienced musculoskeletal radiologists blindly reviewed the imaging studies. The effect of cross-sectional imaging on patient care and treatment plan was evaluated. Results: In 9 of 34 patients one or more fractures were diagnosed on cross-sectional imaging. The scaphoid was fractured in four patients, the lunate and/or the trapezium in three patients, the scaphoid together with the lunate in one patient, and finally the distal radius in one patient. Ligamentous trauma was identified solely on MRI in 11 patients (involving the TFCC in eight cases). In four patients with both imaging methods, CT revealed one fracture of the trapezium not seen on MRI, and one scapholunate fracture with MRI findings of distal radial fracture only. In two patients with normal CT, MRI revealed bone marrow oedema of the scaphoid in one and of the distal radius, lunate and triquetrum in the other. Conclusion: Both CT and MRI might be considered in patients with acute or chronic wrist injury, clinical dilemma and normal initial radiographs, depending on the availability and the individual institution policies.

  18. New developmental evidence clarifies the evolution of wrist bones in the dinosaur-bird transition.

    Science.gov (United States)

    Botelho, João Francisco; Ossa-Fuentes, Luis; Soto-Acuña, Sergio; Smith-Paredes, Daniel; Nuñez-León, Daniel; Salinas-Saavedra, Miguel; Ruiz-Flores, Macarena; Vargas, Alexander O

    2014-09-01

    From early dinosaurs with as many as nine wrist bones, modern birds evolved to develop only four ossifications. Their identity is uncertain, with different labels used in palaeontology and developmental biology. We examined embryos of several species and studied chicken embryos in detail through a new technique allowing whole-mount immunofluorescence of the embryonic cartilaginous skeleton. Beyond previous controversy, we establish that the proximal-anterior ossification develops from a composite radiale+intermedium cartilage, consistent with fusion of radiale and intermedium observed in some theropod dinosaurs. Despite previous claims that the development of the distal-anterior ossification does not support the dinosaur-bird link, we found its embryonic precursor shows two distinct regions of both collagen type II and collagen type IX expression, resembling the composite semilunate bone of bird-like dinosaurs (distal carpal 1+distal carpal 2). The distal-posterior ossification develops from a cartilage referred to as "element x," but its position corresponds to distal carpal 3. The proximal-posterior ossification is perhaps most controversial: It is labelled as the ulnare in palaeontology, but we confirm the embryonic ulnare is lost during development. Re-examination of the fossil evidence reveals the ulnare was actually absent in bird-like dinosaurs. We confirm the proximal-posterior bone is a pisiform in terms of embryonic position and its development as a sesamoid associated to a tendon. However, the pisiform is absent in bird-like dinosaurs, which are known from several articulated specimens. The combined data provide compelling evidence of a remarkable evolutionary reversal: A large, ossified pisiform re-evolved in the lineage leading to birds, after a period in which it was either absent, nonossified, or very small, consistently escaping fossil preservation. The bird wrist provides a modern example of how developmental and paleontological data illuminate

  19. New Developmental Evidence Clarifies the Evolution of Wrist Bones in the Dinosaur–Bird Transition

    Science.gov (United States)

    Botelho, João Francisco; Ossa-Fuentes, Luis; Soto-Acuña, Sergio; Smith-Paredes, Daniel; Nuñez-León, Daniel; Salinas-Saavedra, Miguel; Ruiz-Flores, Macarena; Vargas, Alexander O.

    2014-01-01

    From early dinosaurs with as many as nine wrist bones, modern birds evolved to develop only four ossifications. Their identity is uncertain, with different labels used in palaeontology and developmental biology. We examined embryos of several species and studied chicken embryos in detail through a new technique allowing whole-mount immunofluorescence of the embryonic cartilaginous skeleton. Beyond previous controversy, we establish that the proximal–anterior ossification develops from a composite radiale+intermedium cartilage, consistent with fusion of radiale and intermedium observed in some theropod dinosaurs. Despite previous claims that the development of the distal–anterior ossification does not support the dinosaur–bird link, we found its embryonic precursor shows two distinct regions of both collagen type II and collagen type IX expression, resembling the composite semilunate bone of bird-like dinosaurs (distal carpal 1+distal carpal 2). The distal–posterior ossification develops from a cartilage referred to as “element x,” but its position corresponds to distal carpal 3. The proximal–posterior ossification is perhaps most controversial: It is labelled as the ulnare in palaeontology, but we confirm the embryonic ulnare is lost during development. Re-examination of the fossil evidence reveals the ulnare was actually absent in bird-like dinosaurs. We confirm the proximal–posterior bone is a pisiform in terms of embryonic position and its development as a sesamoid associated to a tendon. However, the pisiform is absent in bird-like dinosaurs, which are known from several articulated specimens. The combined data provide compelling evidence of a remarkable evolutionary reversal: A large, ossified pisiform re-evolved in the lineage leading to birds, after a period in which it was either absent, nonossified, or very small, consistently escaping fossil preservation. The bird wrist provides a modern example of how developmental and paleontological

  20. New method of measuring wrist joint position sense avoiding cutaneous and visual inputs

    Directory of Open Access Journals (Sweden)

    Laskowski Edward R

    2010-02-01

    Full Text Available Abstract Background Aspects of afferent inputs, generally termed proprioception, are being increasingly studied. Extraneous factors such as cutaneous inputs can dramatically interfere while trying to design studies in order to determine the participation of the different structures involved in proprioception in the wrist position sense. We tried to determine validity and repeatability of a new wrist joint position measurement device using methodology designed to minimize extraneous factors and isolate muscle and joint inputs. Methods In order to test the reliability of the system, eighty young-adult subjects without musculoskeletal or neurologic impairments affecting the right upper extremity were tested using a custom made motion tracking system. Testing consisted of two conditions: active reproduction of active placement and passive reproduction of passive placement. Subjects performed two repetitions of each target position (10, 20, and 30° of flexion and extension presented in a random order. Test- retest reliability was then tested. Results The average constant error in the passive condition was -0.7° ± 4.7° as compared to the active condition at 3.7° ± 5.1°. Average absolute error in the passive condition was 4.9° ± 2.9° compared to the active condition in which absolute error was 5.9° ± 3.5°. Discussion Test-retest repeatability in both conditions was less than the 5° magnitude typical of clinical goniometry. Errors in the active condition (less than 2° were slightly smaller than the passive condition, and the passive condition was also associated with poorer consistency between apparatus sensors and skin sensors. Conclusions The current system for measurement of wrist joint proprioception allows the researcher to decrease extraneous influences that may affect joint position sense awareness, and will help in future study aiming to determine precisely the role of the different structure involved in proprioception.

  1. Wrist injuries in young adults: The diagnostic impact of CT and MRI

    Energy Technology Data Exchange (ETDEWEB)

    Fotiadou, Anastasia [Department of Radiology, Hinchingbrooke Hospital, Huntingdon, PE29 6NT, Cambridgeshire (United Kingdom); Patel, Arpit [Orthopaedic Surgery, Hinchingbrooke Hospital, Huntingdon, PE29 6NT, Cambridgeshire (United Kingdom); Morgan, Tony [Department of Radiology, Hinchingbrooke Hospital, Huntingdon, PE29 6NT, Cambridgeshire (United Kingdom); Karantanas, Apostolos H., E-mail: karantanas@med.uoc.gr [Department of Radiology, University of Crete, Heraklion (Greece)

    2011-02-15

    Purpose: To evaluate the diagnostic impact of MRI or/and multidetector CT in young patients with wrist injury and inconclusive or negative clinical examination and X-rays and to analyze variations in imaging strategies between a district general hospital (GH) and a university hospital (UH). Materials and methods: A retrospective analysis of 34 young patients (mean age 23 years) with wrist trauma who underwent CT or/and MRI was performed. The injury was acute in 24, and chronic in 10 patients. Twenty-two patients were from a GH and 12 from a UH. Two experienced musculoskeletal radiologists blindly reviewed the imaging studies. The effect of cross-sectional imaging on patient care and treatment plan was evaluated. Results: In 9 of 34 patients one or more fractures were diagnosed on cross-sectional imaging. The scaphoid was fractured in four patients, the lunate and/or the trapezium in three patients, the scaphoid together with the lunate in one patient, and finally the distal radius in one patient. Ligamentous trauma was identified solely on MRI in 11 patients (involving the TFCC in eight cases). In four patients with both imaging methods, CT revealed one fracture of the trapezium not seen on MRI, and one scapholunate fracture with MRI findings of distal radial fracture only. In two patients with normal CT, MRI revealed bone marrow oedema of the scaphoid in one and of the distal radius, lunate and triquetrum in the other. Conclusion: Both CT and MRI might be considered in patients with acute or chronic wrist injury, clinical dilemma and normal initial radiographs, depending on the availability and the individual institution policies.

  2. Quantifying forearm muscle activity during wrist and finger movements by means of multi-channel electromyography.

    Science.gov (United States)

    Gazzoni, Marco; Celadon, Nicolò; Mastrapasqua, Davide; Paleari, Marco; Margaria, Valentina; Ariano, Paolo

    2014-01-01

    The study of hand and finger movement is an important topic with applications in prosthetics, rehabilitation, and ergonomics. Surface electromyography (sEMG) is the gold standard for the analysis of muscle activation. Previous studies investigated the optimal electrode number and positioning on the forearm to obtain information representative of muscle activation and robust to movements. However, the sEMG spatial distribution on the forearm during hand and finger movements and its changes due to different hand positions has never been quantified. The aim of this work is to quantify 1) the spatial localization of surface EMG activity of distinct forearm muscles during dynamic free movements of wrist and single fingers and 2) the effect of hand position on sEMG activity distribution. The subjects performed cyclic dynamic tasks involving the wrist and the fingers. The wrist tasks and the hand opening/closing task were performed with the hand in prone and neutral positions. A sensorized glove was used for kinematics recording. sEMG signals were acquired from the forearm muscles using a grid of 112 electrodes integrated into a stretchable textile sleeve. The areas of sEMG activity have been identified by a segmentation technique after a data dimensionality reduction step based on Non Negative Matrix Factorization applied to the EMG envelopes. The results show that 1) it is possible to identify distinct areas of sEMG activity on the forearm for different fingers; 2) hand position influences sEMG activity level and spatial distribution. This work gives new quantitative information about sEMG activity distribution on the forearm in healthy subjects and provides a basis for future works on the identification of optimal electrode configuration for sEMG based control of prostheses, exoskeletons, or orthoses. An example of use of this information for the optimization of the detection system for the estimation of joint kinematics from sEMG is reported.

  3. Neural adaptations associated with interlimb transfer in a ballistic wrist flexion task.

    Directory of Open Access Journals (Sweden)

    Kathy L Ruddy

    2016-05-01

    Full Text Available Cross education is the process whereby training of one limb gives rise to increases in the subsequent performance of its opposite counterpart. The execution of many unilateral tasks is associated with increased excitability of corticospinal projections from primary motor cortex (M1 to the opposite limb. It has been proposed that these effects are causally related. Our aim was to establish whether changes in corticospinal excitability arising from prior training of the opposite limb determine levels of interlimb transfer. We used three vision conditions shown previously to modulate the excitability of corticospinal projections to the inactive (right limb during wrist flexion movements performed by the training (left limb. These were: mirrored visual feedback of the training limb; no visual feedback of either limb; and visual feedback of the inactive limb. Training comprised 300 discrete, ballistic wrist flexion movements executed as rapidly as possible. Performance of the right limb on the same task was assessed prior to, at the mid point of, and following left limb training. There was no evidence that variations in the excitability of corticospinal projections (assessed by transcranial magnetic stimulation (TMS to the inactive limb were associated with, or predictive of, the extent of interlimb transfer that was expressed. There were however associations between alterations in muscle activation dynamics observed for the untrained limb, and the degree of positive transfer that arose from training of the opposite limb. The results suggest that the acute adaptations that mediate the bilateral performance gains realised through unilateral practice of this ballistic wrist flexion task are mediated by neural elements other than those within M1 that are recruited at rest by single-pulse TMS.

  4. Neural Adaptations Associated with Interlimb Transfer in a Ballistic Wrist Flexion Task.

    Science.gov (United States)

    Ruddy, Kathy L; Rudolf, Anne K; Kalkman, Barbara; King, Maedbh; Daffertshofer, Andreas; Carroll, Timothy J; Carson, Richard G

    2016-01-01

    Cross education is the process whereby training of one limb gives rise to increases in the subsequent performance of its opposite counterpart. The execution of many unilateral tasks is associated with increased excitability of corticospinal projections from primary motor cortex (M1) to the opposite limb. It has been proposed that these effects are causally related. Our aim was to establish whether changes in corticospinal excitability (CSE) arising from prior training of the opposite limb determine levels of interlimb transfer. We used three vision conditions shown previously to modulate the excitability of corticospinal projections to the inactive (right) limb during wrist flexion movements performed by the training (left) limb. These were: (1) mirrored visual feedback of the training limb; (2) no visual feedback of either limb; and (3) visual feedback of the inactive limb. Training comprised 300 discrete, ballistic wrist flexion movements executed as rapidly as possible. Performance of the right limb on the same task was assessed prior to, at the mid point of, and following left limb training. There was no evidence that variations in the excitability of corticospinal projections (assessed by transcranial magnetic stimulation (TMS)) to the inactive limb were associated with, or predictive of, the extent of interlimb transfer that was expressed. There were however associations between alterations in muscle activation dynamics observed for the untrained limb, and the degree of positive transfer that arose from training of the opposite limb. The results suggest that the acute adaptations that mediate the bilateral performance gains realized through unilateral practice of this ballistic wrist flexion task are mediated by neural elements other than those within M1 that are recruited at rest by single-pulse TMS.

  5. Reliable and Rapid Robotic Assessment of Wrist Proprioception Using a Gauge Position Matching Paradigm

    Science.gov (United States)

    Rinderknecht, Mike D.; Popp, Werner L.; Lambercy, Olivier; Gassert, Roger

    2016-01-01

    Quantitative assessments of position sense are essential for the investigation of proprioception, as well as for diagnosis, prognosis and treatment planning for patients with somatosensory deficits. Despite the development and use of various paradigms and robotic tools, their clinimetric properties are often poorly evaluated and reported. A proper evaluation of the latter is essential to compare results between different studies and to identify the influence of possible confounds on outcome measures. The aim of the present study was to perform a comprehensive evaluation of a rapid robotic assessment of wrist proprioception using a passive gauge position matching task. Thirty-two healthy subjects undertook six test-retests of proprioception of the right wrist on two different days. The constant error (CE) was 0.87°, the absolute error (AE) was 5.87°, the variable error (VE) was 4.59° and the total variability (E) was 6.83° in average for the angles presented in the range from 10° to 30°. The intraclass correlation analysis provided an excellent reliability for CE (0.75), good reliability for AE (0.68) and E (0.68), and fair reliability for VE (0.54). Tripling the assessment length had negligible effects on the reliabilities. Additional analysis revealed significant trends of larger overestimation (constant errors), as well as larger absolute and variable errors with increased flexion angles. No proprioceptive learning occurred, despite increased familiarity with the task, which was reflected in significantly decreased assessment duration by 30%. In conclusion, the proposed automated assessment can provide sensitive and reliable information on proprioceptive function of the wrist with an administration time of around 2.5 min, demonstrating the potential for its application in research or clinical settings. Moreover, this study highlights the importance of reporting the complete set of errors (CE, AE, VE, and E) in a matching experiment for the identification of

  6. Simplified approach to MR image quantification of the rheumatoid wrist: a pilot study

    Energy Technology Data Exchange (ETDEWEB)

    Kamishima, Tamotsu; Terae, Satoshi; Shirato, Hiroki [Hokkaido University Hospital, Department of Radiology, Sapporo City (Japan); Tanimura, Kazuhide; Aoki, Yuko; Shimizu, Masato; Matsuhashi, Megumi; Fukae, Jun [Hokkaido Medical Center for Rheumatic Diseases, Sapporo City, Hokkaido (Japan); Kosaka, Naoki [Tokeidai Memorial Hospital, Sapporo City, Hokkaido (Japan); Kon, Yujiro [St. Thomas' Hospital, Lupus Research Unit, The Rayne Institute, London (United Kingdom)

    2011-01-15

    To determine an optimal threshold in a simplified 3D-based volumetry of abnormal signals in rheumatoid wrists utilizing contrast and non-contrast MR data, and investigate the feasibility and reliability of this method. MR images of bilateral hands of 15 active rheumatoid patients were assessed before and 5 months after the initiation of tocilizumab infusion protocol. The volumes of abnormal signals were measured on STIR and post-contrast fat-suppressed T1-weighted images. Three-dimensional volume rendering of the images was used for segmentation of the wrist by an MR technologist and a radiologist. Volumetric data were obtained with variable thresholding (1, 1.25, 1.5, 1.75, and 2 times the muscle signal), and were compared to clinical data and semiquantitative MR scoring (RAMRIS) of the wrist. Intra- and interobserver variability and time needed for volumetry measurements were assessed. The volumetric data correlated favorably with clinical parameters almost throughout the pre-determined thresholds. Interval differences in volumetric data correlated favorably with those of RAMRIS when the threshold was set at more than 1.5 times the muscle signal. The repeatability index was lower than the average of the interval differences in volumetric data when the threshold was set at 1.5-1.75 for STIR data. Intra- and interobserver variability for volumetry was 0.79-0.84. The time required for volumetry was shorter than that for RAMRIS. These results suggest that a simplified MR volumetric data acquisition may provide gross estimates of disease activity when the threshold is set properly. Such estimation can be achieved quickly by non-imaging specialists and without contrast administration. (orig.)

  7. Wrist Injuries in Elderly Women is Overlooked when Using X-ray in Comparison to MRI

    DEFF Research Database (Denmark)

    Eckmann, Johan Høising; Brix, Lau; Nielsen, Randi

    Introduction:Women aged 50 and above have a reduced bone density which increases the risk ofwrist injuries when exposed to traumas. Diagnosing wrist fractures and strainsof the ligaments is important as a delay may lead to a prolonged healingprocess, permanent pain problems, reduced gripping stre...... above 50 years of age with suspected wristfractures. MRI may also prove to be the choice of modality for emergency roomtraumas in the future.   References: Ahn J. M. & El-Khoury G. Y.  Occult fractures of extremities. Radiol ClinNorth Am, 2007; 45: 561-79, ix.  ...

  8. A Rare Clinical Presentation Due to Small Cortical Infarction: Isolated Wrist Drop

    Directory of Open Access Journals (Sweden)

    Hatice Köse Özlece

    2015-04-01

    Full Text Available Isolated wrist drop due to stroke is infrequently observed, and often misdiagnosed as peripheral neuropathy. It is important to make the differential diagnosis correctly because drop hand that results from peripheral pathology requires a completely different treatment strategy than central pathology. In addition, small infarcts are important to identify in order to optimise secondary prophylaxis. In this report, we describe an 83-year-old man, with isolated drop hand due to acute small cortical infarction in the left precentral gyrus and present this situation in light of the literature.

  9. Improving botulinum toxin therapy for palmar hyperhidrosis: wrist block and technical considerations.

    Science.gov (United States)

    de Almeida, A R; Kadunc, B V; de Oliveira, E M

    2001-01-01

    Botulinum A exotoxin has become an excellent therapeutic option to treat focal hyperhidrosis, but when the problem affects the palmar region the technique has some drawbacks. Pain with injection is difficult to tolerate and the large dose needed to treat both hands are two concerns, as well as muscle weakness secondary to botulinum toxin diffusion and the possibility of antibody production. All these problems limit the number of patients treated. The author's suggestion is to treat only the dominant hand, after performing a wrist block. The use of a device adapted from a cartridge rubber may help to control the injection depth and the risk of muscular weakness. PMID:11231239

  10. Psychometric properties of two questionnaires in the context of total wrist arthroplasty

    DEFF Research Database (Denmark)

    Boeckstyns, Michel E H; Merser, Søren

    2014-01-01

    response mean 1.06 and effect size 1.07). The construct validity of both scales was confirmed by three a priori formulated hypotheses: a moderate, negative correlation of scores with grip-strength; a moderate, positive correlation with pain and a very weak or no correlation with mobility. Rheumatoid...... evaluated the Patient-rated Wrist Evaluation. RESULTS: Internal consistency and reproducibility were very high (Cronbach's alpha 0.96/0.97; Spearman's rho 0.90/ 0.91; intraclass coefficient 0.91/0.92), and there were no floor or ceiling effects. The responsiveness of the QuickDASH was high (standardised...

  11. Design of a Spherical Wrist with Parallel Architecture: Application to Vertebrae of an Eel Robot

    CERN Document Server

    Chablat, Damien

    2007-01-01

    The design of a spherical wrist with parallel architecture is the object of this article. This study is part of a larger project, which aims to design and to build an eel robot for inspection of immersed piping. The kinematic analysis of the mechanism is presented first to characterize the singular configurations as well as the isotropic configurations. We add the design constraints related to the application, such as (i) the compactness of the mechanism, (ii) the symmetry of the elements in order to ensure static and dynamic balance and (iii) the possibility of the mechanism to fill the elliptic form of the ell sections.

  12. [Application possibilities and initial experience with digital volume tomography in hand and wrist imaging].

    Science.gov (United States)

    Goerke, Sebastian M; Neubauer, J; Zajonc, H; Thiele, J R; Kotter, E; Langer, M; Stark, G B; Lampert, F M

    2015-02-01

    During the last decade, DVT (digital volume tomography) imaging has become a widely used standard technique in head and neck imaging. Lower radiation exposure compared to conventional computed tomography (MDCT) has been described. Recently, DVT has been developed as an extremity scanner and as such represents a new imaging technique for hand surgery. We here describe the first 24 months experience with this new imaging modality in hand and wrist imaging by presenting representative cases and by describing the technical background. Furthermore, the method's advantages and disadvantages are discussed with reference to the given literature. PMID:25706176

  13. A diagnostic approach to abdominal tuberculosis

    Institute of Scientific and Technical Information of China (English)

    Eser Vardareli; Baybora Kircali

    2005-01-01

    @@ TO THE EDITOR We read with interest the article by Uzunkoy et al[1]. about diagnosis of abdominal tuberculosis. In this article authors concluded that PCR for mycobacterium tuberculosis complex is a noninvasive method which can provide the diagnosis in most cases. If this tests negative or not feasible, laparotomy should be performed.

  14. Unusual Differential Diagnosis of Upper Abdominal Pain

    Directory of Open Access Journals (Sweden)

    Lanthaler Monika

    2009-01-01

    The peculiarity of this case is the rarity of toothpick ingestion and gastric perforation in a young and healthy white Caucasian followed by development of a liver abscess after primary uneventful endoscopic removal. In light of this case, gastric perforation due to ingested foreign bodies such as toothpicks can be considered a rare cause of upper abdominal pain.

  15. [Albert Einstein and his abdominal aortic aneurysm].

    Science.gov (United States)

    Cervantes Castro, Jorge

    2011-01-01

    The interesting case of Albert Einstein's abdominal aortic aneurysm is presented. He was operated on at age 69 and, finding that the large aneurysm could not be removed, the surgeon elected to wrap it with cellophane to prevent its growth. However, seven years later the aneurysm ruptured and caused the death of the famous scientist.

  16. CT features of abdominal plasma cell neoplasms

    Energy Technology Data Exchange (ETDEWEB)

    Monill, J.; Pernas, J.; Montserrat, E.; Perez, C.; Clavero, J.; Martinez-Noguera, A.; Guerrero, R.; Torrubia, S. [Universitat Autonoma de Barcelona, Hospital de Sant Pau, Barcelona (Spain)

    2005-08-01

    The aim of this study was to describe the CT features of abdominal plasma cell neoplasms. We reviewed CT imaging findings in 11 patients (seven men, four women; mean age 62 years) with plasma cell neoplasms and abdominal involvement. Helical CT of the entire abdomen and pelvis was performed following intravenous administration of contrast material. Images were analyzed in consensus by two radiologists. Diagnoses were made from biopsy, surgery and/or clinical follow-up findings. Multiple myeloma was found in seven patients and extramedullary plasmacytoma in four patients. All patients with multiple myeloma had multifocal disease with involvement of perirenal space (4/7), retroperitoneal and pelvic lymph nodes (3/7), peritoneum (3/7), liver (2/7), subcutaneous tissues (2/7) and kidney (1/7). In three of the four patients with extramedullary plasmacytoma, a single site was involved, namely stomach, vagina and retroperitoneum. In the fourth patient, a double site of abdominal involvement was observed with rectal and jejunal masses. Plasma cell neoplasm should be considered in the differential diagnosis of single or multiple enhancing masses in the abdomen or pelvis. Abdominal plasma cell neoplasms were most frequently seen as well-defined enhancing masses (10/11). (orig.)

  17. Abdominal CT in acute arterial pathology

    International Nuclear Information System (INIS)

    The abdominal arterial pathology as studied by CT imagings is reviewed. The illustrated morphology of aortic aneurysms complications (arterial embolism, dissection and arteriosclerotic ulcer ) are studied. The signs that lead to diagnosis are assessed and the major points on which to base a correct radiological study are reviewed

  18. CT features of abdominal plasma cell neoplasms

    International Nuclear Information System (INIS)

    The aim of this study was to describe the CT features of abdominal plasma cell neoplasms. We reviewed CT imaging findings in 11 patients (seven men, four women; mean age 62 years) with plasma cell neoplasms and abdominal involvement. Helical CT of the entire abdomen and pelvis was performed following intravenous administration of contrast material. Images were analyzed in consensus by two radiologists. Diagnoses were made from biopsy, surgery and/or clinical follow-up findings. Multiple myeloma was found in seven patients and extramedullary plasmacytoma in four patients. All patients with multiple myeloma had multifocal disease with involvement of perirenal space (4/7), retroperitoneal and pelvic lymph nodes (3/7), peritoneum (3/7), liver (2/7), subcutaneous tissues (2/7) and kidney (1/7). In three of the four patients with extramedullary plasmacytoma, a single site was involved, namely stomach, vagina and retroperitoneum. In the fourth patient, a double site of abdominal involvement was observed with rectal and jejunal masses. Plasma cell neoplasm should be considered in the differential diagnosis of single or multiple enhancing masses in the abdomen or pelvis. Abdominal plasma cell neoplasms were most frequently seen as well-defined enhancing masses (10/11). (orig.)

  19. Connective tissue alteration in abdominal wall hernia

    DEFF Research Database (Denmark)

    Henriksen, N A; Yadete, D H; Sørensen, Lars Tue;

    2011-01-01

    The aetiology and pathogenesis of abdominal wall hernia formation is complex. Optimal treatment of hernias depends on a full understanding of the pathophysiological mechanisms involved in their formation. The aim of this study was to review the literature on specific collagen alterations in abdom...

  20. Case series of abdominal sacral colpopexy

    Directory of Open Access Journals (Sweden)

    Vandana Dhama

    2016-06-01

    Conclusions: Abdominal sacral colpopexy with polypropylene mesh is a safe, effective treatment in patients having post hysterectomy vaginal vault proplase. When done by experienced gynecologist, major post-operative complications seem to be very few in patients having normal BMI and no major systemic illnesses. [Int J Reprod Contracept Obstet Gynecol 2016; 5(6.000: 1992-1995