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Sample records for arm wrist abdominal

  1. Hand/Wrist/Arm Problems

    Science.gov (United States)

    ... your doctor right away.Start OverDiagnosisYou may have TENDINITIS, inflammation of a tendon.Self CareUse an over- ... OverDiagnosisYour may have TENNIS ELBOW, a type of TENDINITIS.Self CareRest the arm, apply ice packs to ...

  2. 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

  3. Development of prosthetic arm with pneumatic prosthetic hand and tendon-driven wrist.

    Science.gov (United States)

    Takeda, Hiroyuki; Tsujiuchi, Nobutaka; Koizumi, Takayuki; Kan, Hiroto; Hirano, Masanori; Nakamura, Yoichiro

    2009-01-01

    Recently, various prosthetic arms have been developed, but few are both attractive and functional. Considering human coexistence, prosthetic arms must be both safe and flexible. In this research, we developed a novel prosthetic arm with a five-fingered prosthetic hand using our original pneumatic actuators and a slender tendon-driven wrist using a wire drive and two small motors. Because the prosthetic hand's driving source is comprised of small pneumatic actuators, the prosthetic hand is safe when it makes contact with people; it can also operate flexibly. In addition, the arm has a tendon-driven wrist to expand its motion space and to perform many operations. First, we explain the pneumatic hand's drive mechanism and its tendon-driven wrist. Next, we identify the characteristics of the hand and the wrist and construct a control system for this arm and verify its control performance.

  4. Perceived muscular tension predicts future neck - shoulder and arm - wrist - hand symptoms

    NARCIS (Netherlands)

    Huysmans, M.A.; Blatter, B.M.; Beek, A.J. van der

    2012-01-01

    Objectives: The aim of the study was to investigate if perceived muscular tension predicts future neck - shoulder symptoms and arm - wrist - hand symptoms in symptomfree office workers. Methods: Data were used of a prospective cohort of 1951 office workers with a follow-up duration of 2 years (the P

  5. 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.

  6. Risk of low-energy hip, wrist, and upper arm fractures among current and previous users of hormone replacement therapy

    DEFF Research Database (Denmark)

    Hundrup, Yrsa Andersen; Høidrup, Susanne; Ekholm, Ola

    2004-01-01

    To examine the effect of oestrogen alone and in combination with progestin on the risk of low-energy, hip, wrist, and upper arm fractures. Additionally, to examine to what extent previous use, duration of use as well as recency of discontinuation of hormone replacement therapy (HRT) influences th...

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

    Directory of Open Access Journals (Sweden)

    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

  9. 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.

  10. 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.

  11. 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.

  12. 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)…

  13. 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.

  14. Wrist osteoarthritis.

    Science.gov (United States)

    Laulan, J; Marteau, E; Bacle, G

    2015-02-01

    Painful wrist osteoarthritis can result in major functional impairment. Most cases are related to posttraumatic sequel, metabolic arthropathies, or inflammatory joint disease, although wrist osteoarthritis occurs as an idiopathic condition in a small minority of cases. Surgery is indicated only when conservative treatment fails. The main objective is to ensure pain relief while restoring strength. Motion-preserving procedures are usually preferred, although residual wrist mobility is not crucial to good function. The vast array of available surgical techniques includes excisional arthroplasty, limited and total fusion, total wrist denervation, partial and total arthroplasty, and rib-cartilage graft implantation. Surgical decisions rest on the cause and extent of the degenerative wrist lesions, degree of residual mobility, and patient's wishes and functional demand. Proximal row carpectomy and four-corner fusion with scaphoid bone excision are the most widely used surgical procedures for stage II wrist osteoarthritis secondary to scapho-lunate advanced collapse (SLAC) or scaphoid non-union advanced collapse (SNAC) wrist. Proximal row carpectomy is not indicated in patients with stage III disease. Total wrist denervation is a satisfactory treatment option in patients of any age who have good range of motion and low functional demands; furthermore, the low morbidity associated with this procedure makes it a good option for elderly patients regardless of their range of motion. Total wrist fusion can be used not only as a revision procedure, but also as the primary surgical treatment in heavy manual labourers with wrist stiffness or generalised wrist-joint involvement. The role for pyrocarbon implants, rib-cartilage graft implantation, and total wrist arthroplasty remains to be determined, given the short follow-ups in available studies.

  15. Wrist pain

    Science.gov (United States)

    ... with your wrist, such as typing on a computer keyboard, using a computer mouse, playing racquetball or handball, sewing, painting, writing, ... M. is also a founding member of Hi-Ethics and subscribes to the principles of the Health ...

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

    Energy Technology Data Exchange (ETDEWEB)

    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.

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

    Science.gov (United States)

    Jeon, Pil-Hyun; Kim, Hee-Joung; Lee, Chang-Lae; Kim, Dae-Hong; Lee, Won-Hyung; Jeon, Sung-Su

    2012-06-01

    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.

  18. Exploiting arm posture synergies in activities of daily living to control the wrist rotation in upper limb prostheses: A feasibility study.

    Science.gov (United States)

    Montagnani, Federico; Controzzi, Marco; Cipriani, Christian

    2015-01-01

    Although significant technological advances have been made in the last forty years, natural and effortless control of upper limb prostheses is still an open issue. Commercially available myoelectric prostheses present limited Degrees of Freedom (DoF) mainly because of the lack of available and reliable independent control signals from the human body. Thus, despite the crucial role that an actuated wrist could play in a transradial prosthesis in terms of avoiding compensatory movements, commercial hand prostheses present only manually adjustable passive wrists or actuated rotators controlled by (unnatural) sequential control strategies. In the present study we investigated the synergies between the humeral orientation with respect to the trunk and the forearm pronation/supination angles during the execution of a wide range of activities of daily living, in healthy subjects. Our results showed consistent postural synergies between the two selected body segments for almost the totality of the activities of daily living under investigation. This is a promising result because these postural synergies could be exploited to automatically control the wrist rotator unit in transradial prostheses improving the fluency and the dexterity of the amputee.

  19. Wrist pulse (image)

    Science.gov (United States)

    To measure the pulse at the wrist, place the index and middle finger over the underside of the opposite wrist, below the base ... firmly with flat fingers until you feel the pulse in the radial artery.

  20. Design of a Compact, Reconfigurable, Prosthetic Wrist

    Directory of Open Access Journals (Sweden)

    Arthur Zinck

    2012-01-01

    Full Text Available The design of a prosthetic wrist is the result of compromises between the function and the practicality of the device. Conventional prosthetic wrists use a single degree of freedom to produce pro/supination of the hand. It has not been demonstrated that this is the most functional alignment for a single axis. Previous work by the authors suggests that if the wrist must have only one rotatory axis then a more oblique orientation would be more functional. To test this idea, a compact wrist with a single axis and spherical design has been made that will allow any axis of rotation to be selected and the functional performance of the resulting arm be tested.

  1. Education in wrist arthroscopy

    NARCIS (Netherlands)

    Obdeijn, M.C.

    2014-01-01

    The subject of this thesis is an initiative for improving the education of residents in surgical skills and knowledge by using the current technical possibilities. The choice of wrist arthroscopy was driven by the fact that novel techniques have recently been developed within hand and wrist surgery

  2. 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.

  3. 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 ...

  4. 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.

  5. X-Ray Exam: Wrist

    Science.gov (United States)

    ... Old Feeding Your 1- to 2-Year-Old X-Ray Exam: Wrist KidsHealth > For Parents > X-Ray Exam: Wrist A A A What's in ... español Radiografía: muñeca What It Is A wrist X-ray is a safe and painless test that ...

  6. 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.

  7. 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.

  8. 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

  9. Direct effect of a dynamic wrist and hand orthosis on reach and grasp kinematics in chronic stroke

    NARCIS (Netherlands)

    Nijenhuis, S.M.; Prange, G.B.; Stienen, A.H.A.; Buurke, J.H.; Rietman, J.S.; Yu, Haoyong; Braun, David; Campolo, Domenico

    2015-01-01

    Many stroke patients have impaired arm and hand function. Distal arm and hand devices may support functional use of the upper extremity in activities in daily life. The present study assessed the direct effects of a passive dynamic wrist and hand orthosis on hand and arm movements during the perform

  10. 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...... in the emergency room were examined according to an algorithm until a diagnosis was established. The overall incidence of wrist trauma was 69 per 10,000 inhabitants per year. Incidence of wrist trauma requiring x-ray examination was 58 per 10,000 per year. The incidence of distal radius fractures was 27 per 10...... using data from a population-based study. A completeness rate of 0.56 (95% confidence interval: 0.31-0.78) was found. An x-ray had been taken for all patients reporting a fracture thus justifying the use of fractures as an incidence measure when comparing groups of patients with wrist trauma....

  11. The instability of wrist joint and total wrist replacement

    Institute of Scientific and Technical Information of China (English)

    Jin-xing Ma; Yong-Qing Xu

    2016-01-01

    Total wrist arthroplasty are not used as widely as total knee and hip replacement.The functional hands are requiring surgeons to design a durable and functional satisfying prosthesis.This article will list the main reasons that cause the failure of the prosthesis.Some remarkable and representative prostheses are listed to show the devolvement of total wrist prosthesis and their individual special innovations to fix the problems,And the second part we will discuss the part that biomechanical elements act in the total wrist replacement (TWA).Summarize and find out what the real problem is and how we can find a way to fix it.

  12. Chondrocalcinosis of the wrist.

    Science.gov (United States)

    Saffar, P

    2004-10-01

    Calcium Pyrophosphate Dihydrate Deposition (CPDD) disease has characteristic radiographic features including soft tissue calcification, joint space narrowing, bone sclerosis, subchondral cyst formation without osteophyte formation, and large intraosseous geodes. Triangular fibrocartilage calcification is frequently found and isolated scapho-trapezio-trapezoid (STT) arthritis is specific for CPDD. Distal radio-ulnar (DRUJ), isolated midcarpal joint and piso-triquetral joint involvement also occur. 127 patients were reviewed. Seventy-eight had symptomatic STT joint arthritis, for which 36 underwent surgery. Twenty-two patients had a SLAC wrist deformity for which ten underwent surgery. Eight patients had isolated midcarpal arthritis for which three midcarpal arthrodeses, two four-bone arthrodeses and two carpal tunnel releases were performed. Nineteen patients had a generalized arthritis and seven of the patients underwent surgery: four-corner arthrodesis+scaphoidectomy (one case), carpal tunnel release (two cases) extensor synovectomy (two cases) and trigger finger release (two cases).

  13. Engineering analysis and test results of the pre-stage planetary gear trains for wrist rotation and pitch assembly and azimuth and elevation assembly of the extendable stiff arm manipulator kit assembly

    Science.gov (United States)

    Morris, R. N.

    1973-01-01

    In order to improve the performance capability of the Extendable Stiff Arm Manipulator (ESAM) it was necessary to increase the overall gear ratio by a factor of approximately four. This is accomplished with minimum effect to existing hardware by the interposition of a planetary gear transmission between the respective drive motors and the harmonic drive transmissions. The engineering analysis in support of this design approach and the subsequent no-load test results are reported.

  14. Wrist arthrography: a simple method

    Energy Technology Data Exchange (ETDEWEB)

    Berna-Serna, Juan D.; Reus, Manuel; Alonso, Jose [Virgen de la Arrixaca University Hospital, Department of Radiology, El Palmar (Murcia) (Spain); Martinez, Francisco; Domenech-Ratto, Gines [University of Murcia, Department of Human Anatomy, Faculty of Medicine, Murcia (Spain)

    2006-02-01

    A technique of wrist arthrography is presented using an adhesive marker-plate with radiopaque coordinates to identify precisely sites for puncture arthrography of the wrist and to obviate the need for fluoroscopic guidance. Radiocarpal joint arthrography was performed successfully in all 24 cases, 14 in the cadaveric wrists and 10 in the live patients. The arthrographic procedure described in this study is simple, safe, and rapid, and has the advantage of precise localisation of the site for puncture without need for fluoroscopic guidance. (orig.)

  15. 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...

  16. A minimal wrist arthroplasty for early wrist osteoarthritis.

    Science.gov (United States)

    Wollstein, Ronit; Carlson, Lois

    2013-05-01

    Background The most common forms of salvage surgery for wrist arthritis of any stage are four corner fusion and proximal row carpectomy. Younger, high demand patients with early arthritis may not be candidates for this type of salvage surgery. We describe a technique and preliminary case series of a minimal radiocarpal arthroplasty aimed at patients with initial and isolated wrist arthritis (stage 1). This procedure does not preclude any procedure that may become necessary in the future. Patients A series of nineteen male heavy laborers with scapholunate advanced collapse (SLAC grade 1-2) wrist osteoarthritis that felt the wrist arthritis was prohibiting their function enough to warrant surgery, but were unwilling to undergo a salvage procedure, were treated with the technique. The average age was 57.2 (± 7.7) years. The average follow up period was 40.3 months (9-63 months). All patients returned to heavy labor. No revision surgery was needed within the follow up period. Range of motion (ROM) and grip strength did not significantly improve. Patient satisfaction was high despite imperfect results. Conclusions Minimal arthroplasty as described may provide a temporary solution for active patients with symptomatic early wrist arthritis who are not candidates for salvage wrist surgery. Longer -term follow up as well as investigation of additional stabilization procedures is necessary.

  17. Distal Radius Fracture (Broken Wrist)

    Science.gov (United States)

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

  18. Ulnar Neuropathy at the Wrist

    OpenAIRE

    2009-01-01

    A case of ulnar nerve compression at the wrist within Guyon’s canal is reported. The clinical presentation initially appeared consistent with an ulnar nerve entrapment at the elbow. The true diagnosis of an ulnar sensorimotor nerve lesion occurring within the canal of Guyon was made electrophysiologically. Magnetic resonance imaging demonstrated compression of the nerve within the canal by a ganglionic cyst, which was confirmed by surgical intervention. Ulnar nerve entrapment at the wrist is ...

  19. Simulation of extension, radial and ulnar deviation of the wrist with a rigid body spring model.

    Science.gov (United States)

    Fischli, S; Sellens, R W; Beek, M; Pichora, D R

    2009-06-19

    A novel computational model of the wrist that predicts carpal bone motion was developed in order to investigate the complex kinematics of the human wrist. This rigid body spring model (RBSM) of the wrist was built using surface models of the eight carpal bones, the bases of the five metacarpal bones, and the distal parts of the ulna and radius, all obtained from computed tomography (CT) scans of a cadaver upper limb. Elastic contact conditions between the rigid bodies modeled the influence of the cartilage layers, and ligamentous structures were constructed using nonlinear, tension-only spring elements. Motion of the wrist was simulated by applying forces to the tendons of the five main wrist muscles modeled. Three wrist motions were simulated: extension, ulnar deviation and radial deviation. The model was tested and tuned by comparing the simulated displacement and orientation of the carpal bones with previously obtained CT-scans of the same cadaver arm in deviated (45 degrees ulnar and 15 degrees radial), and extended (57 degrees ) wrist positions. Simulation results for the scaphoid, lunate, capitate, hamate and triquetrum are presented here and provide credible prediction of carpal bone movement. These are the first reported results of such a model. They indicate promise that this model will assist in future wrist kinematics investigations. However, further optimization and validation are required to define and guarantee the validity of results.

  20. 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.

  1. 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.

  2. Scapholunate advanced collapse wrist salvage.

    Science.gov (United States)

    Ashmead, D; Watson, H K; Damon, C; Herber, S; Paly, W

    1994-09-01

    Patients with scapholunate advanced collapse (SLAC) wrist do not have to undergo total wrist arthrodesis; the SLAC pattern spares the radiolunate articulation, providing a basis for salvage. We report the results of 100 cases in which a technique comprised of scaphoid excision and limited wrist arthrodesis was used. The average followup period of 44 months revealed excellent functional status and a high rate of patient satisfaction. The majority of employed patients were able to return to their original jobs, and many chose to resume wrist-related recreational activities. Pain relief was good to excellent in most cases. Extension/flexion averaged 72 degrees (53% of a normal opposite wrist), radioulnar deviation 37 degrees (59%), and grip strength 80% of the opposite side. X-ray films revealed only two instances of radiolunate destruction, both in conjunction with ulnar translation of the carpus. The other 98 patients demonstrated a well-preserved radiolunate joint regardless of followup interval. Complications were few. Nonunion occurred in three cases. A dorsal impingement of the capitate and radius (12%) was felt to be technique-related and avoidable by careful capitolunate alignment.

  3. Ulnar nerve excursion and strain at the elbow and wrist associated with upper extremity motion.

    Science.gov (United States)

    Wright, T W; Glowczewskie, F; Cowin, D; Wheeler, D L

    2001-07-01

    Significant excursion of the ulnar nerve is required for unimpeded upper extremity motion. This study evaluated the excursion necessary to accommodate common motions of daily living and associated strain on the ulnar nerve. The 2 most common sites of nerve entrapment, the cubital tunnel and the entrance of Guyon's canal, were studied. Five fresh-frozen, thawed transthoracic cadaver specimens (10 arms) were dissected and the nerve was exposed at the elbow and wrist only enough to be marked with a microsuture. Excursion was measured with a laser mounted on a Vernier caliper fixed to the bone and aligned in the direction of nerve motion. A Microstrain (Burlington, VT) DVRT strain device was applied to the nerve at both the elbow and wrist. Nerve excursion associated with motion of the shoulder, elbow, wrist, and fingers (measured by goniometer) was measured at the wrist and elbow. An average of 4.9 mm ulnar nerve excursion was required at the elbow to accommodate shoulder motion from 30 degrees to 110 degrees of abduction, and 5.1 mm was needed for elbow motion from 10 degrees to 90 degrees. When the wrist was moved from 60 degrees of extension to 65 degrees of flexion, 13.6 mm excursion of the ulnar nerve was required at the wrist. When all the motions of the wrist, fingers, elbow, and shoulder were combined, 21.9 mm of ulnar nerve excursion was required at the elbow and 23.2 mm at the wrist. Ulnar nerve strain of 15% or greater was experienced at the elbow with elbow flexion and at the wrist with wrist extension and radial deviation. Any factor that limits excursion at these sites could result in repetitive traction of the nerve and possibly play a role in the pathophysiology of cubital tunnel syndrome or ulnar neuropathy at Guyon's canal.

  4. Ulnar neuropathy at the wrist.

    Science.gov (United States)

    Pearce, Carisa; Feinberg, Joseph; Wolfe, Scott W

    2009-09-01

    A case of ulnar nerve compression at the wrist within Guyon's canal is reported. The clinical presentation initially appeared consistent with an ulnar nerve entrapment at the elbow. The true diagnosis of an ulnar sensorimotor nerve lesion occurring within the canal of Guyon was made electrophysiologically. Magnetic resonance imaging demonstrated compression of the nerve within the canal by a ganglionic cyst, which was confirmed by surgical intervention. Ulnar nerve entrapment at the wrist is uncommon and difficult to diagnose; therefore, it is important to understand the nerve's anatomical course and distribution to allow for accurate diagnosis by clinical and electrodiagnostic evaluations. Electrodiagnosis is an important tool in identifying ulnar nerve lesions at the wrist while excluding other disorders in the differential and recognizing coexisting pathology.

  5. The relationship betwe en arm circumference, waist to arm ratio and abdominal obesity in essential hypertensive p a-tients%原发性高血压患者臂围、腰臂比与腹型肥胖的关系

    Institute of Scientific and Technical Information of China (English)

    李金娟; 刘力松; 庞蓓蕾; 王盟; 李碧汐

    2014-01-01

    目的:探讨原发性高血压及代谢综合征人群臂围、腰臂比与腹型肥胖及其他传统心血管危险因素的关系。方法连续入选初诊或未经治疗的原发性高血压患者540例,以臂围28种.8 cm为切点将所有入选对象分为A组(臂围≥28.8 cm)238例和B组(臂围<28.8 cm)302例;再将所有患者分为代谢综合征组236例与非代谢综合征组304例,分别进行比较。结果 A组患者的体质量指数(BMI)、腰围、腰身比、收缩压、丙氨酸氨基转移酶(ALT)、血清肌酐(SCr)、血清尿酸(UA)、三酰甘油(TG)、空腹血糖(FPG)、血红蛋白(Hb)均高于B组(均P <0.05),年龄、脉压、高密度脂蛋白胆固醇( HDL-C)均低于B组(均P <0.05)。代谢综合征组患者的腰臂比、BMI、腰围、腰身比、臂围及ALT、UA、TG、 TC、FPG等代谢指标高于非代谢综合征组(均P <0.05),而HDL-C低于非代谢综合征组( P <0.01)。直线相关分析显示高血压人群臂围与腰围、腰臂比与腰围均呈正相关( r =0.688、0.703, P均<0.01)。代谢综合征患者臂围与腰围、腰臂比与腰围亦呈正相关( r =0.683, r =0.706,均P <0.01)。以腹型肥胖为因变量经多因素Logistic逐步回归分析显示,高臂围、高腰臂比、ALT、TG是腹型肥胖发生的危险因素,OR(95%CI)分别为13.358~71.422、8.925~49.715、1.004~1.051、1.098~1.604。腰臂比、臂围作为诊断腹型肥胖的标准,其ROC曲线下面积均大于0.7( P <0.01)。结论臂围、腰臂比与腰围呈正相关,与诊室收缩压及ALT、SCr、UA、TG、FPG等生化指标及代谢综合征组分密切相关。臂围、腰臂比可能成为新的评价腹型肥胖程度的简易指标。%Objective To investigate whether arm circumference (AC) and waist to arm ratio's relationship with ab-dominal

  6. 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.

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

    Directory of Open Access Journals (Sweden)

    Alireza Shamsoddini

    2013-09-01

    Full Text Available 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.

  8. Measuring Sleep by Wrist Actigraph.

    Science.gov (United States)

    1979-10-01

    C-804G UNCLASSIFIED N i* mhEEmohmhEmhI * - 1 1 ~ 2 AD REPORT NUMBER 1 MEASURING SLEEP BY WRIST ACTIGRAPH * ANNUAL REPORT Daniel F . Kripke, Daniel J...9 17 ~. Daniel F ./iripke, Daniel J./Mullaney.,.~~ DADl17-78-C-8040 and Sam/Messin -..~w.Y~~pn.MITWIATION NAME AND ADDRESS 10. PROGRAM ELEMENT. PROJECT

  9. Arthroscopic repair of peripheral avulsions of the triangular fibrocartilage complex of the wrist: a multicenter study.

    Science.gov (United States)

    Corso, S J; Savoie, F H; Geissler, W B; Whipple, T L; Jiminez, W; Jenkins, N

    1997-02-01

    A multicenter study to assess arthroscopic reconstruction of the peripheral attachment of the triangular fibrocartilage complex was undertaken. A total of 44 patients (45 wrists) from three institutions were reviewed. Twenty-seven of the 45 wrists had associated injuries, including distal radius fracture (4), partial or complete rupture of the scapholunate (7), lunotriquetral (9), ulnocarpal (2), or radiocarpal (2) ligaments. There were two fractured ulnar styloids and one scapholunate accelerated collapse (SLAC) wrist deformity. The peripheral tears were repaired using a zone-specific repair kit. The patients were immobilized in a munster cast, allowing elbow flexion and extension, but no pronation or supination for 4 weeks, followed by 2 to 4 weeks in a short arm cast or VersaWrist splint. All patients were reexamined independently 1 to 3 years postoperatively by a physician, therapist, and registered nurse. The results were graded according to the Mayo modified wrist score. Twenty-nine of the 45 wrists were rated excellent. 12 good, 1 fair, and 3 poor. Overall, 42 of the 45 patients (93%) rated as satisfactory and returned to sports or work activities. One patient had chronic pain, and two patients had ulnar nerve symptoms, although motion was normal in all, and their grip strength was at least 75% of the opposite hand. Arthroscopic repair of peripheral tears of the triangular fibrocartilage complex (TFCC) is a satisfactory method of repairing these injuries.

  10. Blisters associated with elective wrist surgery.

    Science.gov (United States)

    Steinberg, Tsipora; Chernofsky, Michael A; Luria, Shai

    2015-01-01

    Blistering of the skin has been reported after high energy trauma or arthroplasties of large joints. It is rare in wrist trauma and seldom reported following elective wrist surgery. We present three cases of skin blistering after elective wrist surgery. Two female patients aged 18 and 35 years and one male patient aged 53 years were treated with total wrist fusion, carpometacarpal fusion, and open wrist ligament repair. They reported burning pain at the blister site. The blisters were clear and treated with dressing changes. There were no infections or wound complications and all blisters resolved without sequelae. These complications were probably due to a combination of factors, including swelling, compression from dressing and splint, multiple surgical incisions, and the use of adhesive dressing. Reassurance and proper wound care are recommended for the complication of clear blistering following elective wrist surgery.

  11. The effect of six keyboard designs on wrist and forearm postures.

    Science.gov (United States)

    Rempel, David; Barr, Alan; Brafman, David; Young, Ed

    2007-05-01

    There is increasing evidence that alternative geometry keyboards may prevent or reduce arm pain or disorders, and presumably the mechanism is by reducing awkward arm postures. However, the effect of alternative keyboards, especially the new designs, on wrist and arm postures are not well known. In this laboratory study, the wrist and forearm postures of 100 subjects were measured with a motion analysis system while they typed on 6 different keyboard configurations. There were significant differences in wrist extension, ulnar deviation, and forearm pronation between keyboards. When considering all 6 wrists and forearm postures together, the keyboard with an opening angle of 12 degrees , a gable angle of 14 degrees , and a slope of 0 degrees appears to provide the most neutral posture among the keyboards tested. Subjects most preferred this keyboard or a similar keyboard with a gable angle of 8 degrees and they least preferred the keyboard on a conventional laptop computer. These findings may assist in recommendations regarding the selection of keyboards for computer usage.

  12. 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...

  13. [Saarland Growth Study: analyses of body composition of children, aged 3 to 11 years. Measurement of height, weight, girth (abdomen, upper arm, calf) and skinfolds (triceps, biceps, subscapular,suprailiacal, abdominal) and bioelectric impedance (BIA)].

    Science.gov (United States)

    Weinand, C; Müller, S; Zabransky, S; Danker-Hopfe, H

    2000-01-01

    This study aimed to set up current reference charts of anthropometric data in the Saarland. Only national and international data were available to be compared but no former Saarland charts could be found. In the period between 1994 and 1995 we investigated children of 3 to 11 years in a cross-sectional study. Therefore we measured body height, weight, circumferences, skinfolds and bioelectrical impedance (BIA). No significant gender differences were found for body height and weight. Boys of all groups of age showed bigger abdominal circumferences than girls of the same age. On the other hand upper-arm and calf-girth of younger girls were larger than that from boys. In higher age groups circumferences become rather equal. The skinfolds of Saarland girls are thicker than those of boys. The urban rural comparison indicated no significant differences. Nor was any social divergence found among the aforementioned parameters. Regarding height Saarland children are seen to be similar or somewhat shorter than those examined in national or international studies. By the way, in higher percentiles the children in our study were heavier. Thus high BMI values of our study are bigger compared with former studies. According to the definition of obesity by the ECOG almost 20 to 30% of our children are obese. The older children become the higher is the percentage of obesity. Comparing girls and boys, bioelectrical impedance shows higher values for girls. In higher age classes resistance levels gets smaller, in boys more so than in girls. Body fat estimated by a formula based on BIA test parameters yielded negative values. So we propose the use of sex- and age-specific raw charts of BIA test parameters.

  14. Abdominal pain

    Science.gov (United States)

    Stomach pain; Pain - abdomen; Belly ache; Abdominal cramps; Bellyache; Stomachache ... Almost everyone has pain in the abdomen at some point. Most of the time, it is not serious. How bad your pain is does not always reflect the seriousness ...

  15. Abdominal actinomycosis.

    Science.gov (United States)

    Wagenlehner, F M E; Mohren, B; Naber, K G; Männl, H F K

    2003-08-01

    Intra-abdominal and extraperitoneal actinomycosis are rare infections, caused by different Actinomyces species. However, they have been diagnosed more frequently in the last ten years. We report three cases of abdominal actinomycosis and a literature review of the last eight years. All three patients were diagnosed by means of histopathologic examination only. In one case, an intrauterine device (IUD) was associated with the infection. Therapy consisted of surgical resection of the inflammatory, infected tissue, and long-term antibiotic therapy. All patients are free of recurrence. Abdominal actinomycosis should be included in the differential diagnosis of an abdominal pathology of insidious onset, especially when an IUD is in place. Even when infection had spread extensively, combined operative and antibiotic therapy cured most of the cases.

  16. 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.

  17. Promising one- to six-year results with the Motec wrist arthroplasty in patients with post-traumatic osteoarthritis.

    Science.gov (United States)

    Reigstad, O; Lütken, T; Grimsgaard, C; Bolstad, B; Thorkildsen, R; Røkkum, M

    2012-11-01

    The Motec cementless modular metal-on-metal ball-and-socket wrist arthroplasty was implanted in 16 wrists with scaphoid nonunion advanced collapse (SNAC; grades 3 or 4) and 14 wrists with scapholunate advanced collapse (SLAC) in 30 patients (20 men) with severe (grades 3 or 4) post-traumatic osteoarthritis of the wrist. The mean age of the patients was 52 years (31 to 71). All prostheses integrated well radiologically. At a mean follow-up of 3.2 years (1.1 to 6.1) no luxation or implant breakage occurred. Two wrists were converted to an arthrodesis for persistent pain. Loosening occurred in one further wrist at five years post-operatively. The remainder demonstrated close bone-implant contact. The clinical results were good, with markedly decreased Disabilities of the Arm Shoulder and Hand (DASH) and pain scores, and increased movement and grip strength. No patient used analgesics and most had returned to work. Good short-term function was achieved using this wrist arthroplasty in a high-demand group of patients with post-traumatic osteoarthritis.

  18. Arthroscopic Resection Arthroplasty of the Radial Column for SLAC Wrist.

    Science.gov (United States)

    Cobb, Tyson K; Walden, Anna L; Wilt, Jessica M

    2014-05-01

    Background Symptomatic advanced scapholunate advanced collapse (SLAC) wrists are typically treated with extensive open procedures, including but not limited to scaphoidectomy plus four-corner fusion (4CF) and proximal row carpectomy (PRC). Although a minimally invasive arthroscopic option would be desirable, no convincing reports exist in the literature. The purpose of this paper is to describe a new surgical technique and outcomes on 14 patients who underwent arthroscopic resection arthroplasty of the radial column (ARARC) for arthroscopic stage II through stage IIIB SLAC wrists and to describe an arthroscopic staging classification of the radiocarpal joint for patients with SLAC wrist. Patients and Methods Data were collected prospectively on 17 patients presenting with radiographic stage I through III SLAC wrist who underwent ARARC in lieu of scaphoidectomy and 4CF or PRC. Fourteen patients (12 men and 2 women) subject to 1-year follow-up were included. The average age was 57 years (range 41 to 78). The mean follow-up was 24 months (range 12 to 61). Arthroscopic resection arthroplasty of the radial column is described for varying stages of arthritic changes of the radioscaphoid joint. Midcarpal resection was not performed. Results The mean Disabilities of the Arm, Shoulder, and Hand (DASH) score was 66 preoperatively and 28 at final follow-up. The mean satisfaction (0 = not satisfied, 5 = completely satisfied) at final follow-up was 4.5 (range 3 to 5). The pain level (on 0-10 scale) improved from 6.6 to 1.3. The total arc of motion changed from 124° preoperatively to 142° postoperatively following an ARARC. Grip was 16 kg preoperatively and 18 kg postoperatively. Radiographic stages typically underestimated arthroscopic staging. Although four of our patients appeared to be radiographic stage I, all were found to have arthritis involving some or all of the radioscaphoid articulation at the time of arthroscopy. Clinical Relevance Pain relief

  19. [Functional results after proximal row carpectomy (PRC) in patients with SNAC-/SLAC-wrist stage II].

    Science.gov (United States)

    Baumeister, S; Germann, G; Dragu, A; Tränkle, M; Sauerbier, M

    2005-04-01

    The proximal row carpectomy (PRC) is a motion preserving procedure which creates a new joint without arthrosis. It is a frequently used procedure in stage II of a posttraumatic degenerative arthrosis of the wrist after scaphoid nonunion or scapholunate ligament instability (SNAC-/SLAC-wrist). In this retrospective analysis the functional postoperative results of this operation are compared in light of a homogenous indication (SNAC-/SLAC-wrist stage II). In 38 patients PRC was performed for a stage II SNAC- (n = 29) or SLAC-wrist (n = 9) between June 1994 and March 2002. Postoperative examination included range of motion and grip strength. Pain was assessed using a visual analogue scale (VAS 0 - 100). The DASH questionnaire (disability of the arm, shoulder and hand) was used to evaluate the disabilities in activities of daily living (ADL). Thirty patients (79 %) with a mean age of 39 years (23 - 59) were evaluated with a mean follow-up of 27 months (6 - 100). Mean extension and flexion of the wrist reached 75 degree which was 57 % of the contralateral hand. Mean radial and ulnar deviation was 33 degree corresponding with 52 % of the contralateral hand. The average grip strength was 50 % of the unaffected side. The postoperative DASH score was 27.4. Pain with strenuous activity was reduced by 40 %, resting pain by 77 %. Three patients showed radiological signs of a radiocapitate arthrosis, one patient needed conversion into a complete wrist arthrodesis. Our results are in concordance with the literature. However, our follow-up time is relatively short and we cannot make any conclusion about the long-term outcome. PRC is a technically straightforward procedure for treatment of carpal collapse. For stage II of the SNAC-/SLAC-wrist we consider the resection of the proximal carpal row an alternative procedure to the midcarpal arthrodesis particularly in patients who require less grip strength and when a shorter postoperative immobilization is reasonable.

  20. 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.

  1. A New Computed Tomography-Based Radiographic Method to Detect Early Loosening of Total Wrist Implants

    Energy Technology Data Exchange (ETDEWEB)

    Olivecrona, H.; Noz, M.E.; Maguire, G.Q. Jr; Zeleznik, M.P.; Sollerman, C.; Olivecrona, L. [Dept. of Hand Surgery, Soedersjukhuset, Stockholm (Sweden)

    2007-11-15

    Background: Diagnosis of loosening of total wrist implants is usually late using routine radiographs. Switching modality to computed tomography (CT) should aid in early diagnosis. Purpose: To propose and evaluate the accuracy of a new CT method for assessing loosening of the carpal component in total wrist arthroplasty. Material and Methods: A protocol encompassing volume registration of paired CT scans of patients with unexplained pain in a prosthetically replaced wrist (used in clinical routine) is presented. Scans are acquired as a dynamic examination under torsional load. Using volume registration, the carpal component of the prosthesis is brought into spatial alignment. After registration, prosthetic loosening is diagnosed by a shift in position of the bones relative to the prosthesis. This study is a preclinical validation of this method using a human cadaverous arm with a cemented total wrist implant and tantalum markers. Seven CT scans of the arm were acquired. The scans were combined into 21 pairs of CT volumes. The carpal component was registered in each scan pair, and the residual mismatch of the surrounding tantalum markers and bone was analyzed both visually and numerically. Results: The detection limit for prosthetic movement was less than 1 mm. Conclusion: The results of this study demonstrate that CT volume registration holds promise to improve detection of movement of the carpal component at an earlier stage than is obtainable with plain radiography.

  2. 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.

  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. Scaphocapitolunate arthrodesis and radial styloidectomy for posttraumatic degenerative wrist disease.

    Science.gov (United States)

    Klausmeyer, Melissa A; Fernandez, Diego L; Caloia, Martin

    2012-08-01

    Long-standing scaphoid nonunion, scaphoid malunion, and chronic scapholunate dissociation result in malalignment of the carpal bones, progressive carpal collapse, instability, and osteoarthritis of the wrist. The most commonly used procedures to treat scaphoid nonunion advanced collapse (SNAC) and scapholunate advanced collapse (SLAC) wrists are the four-corner fusion (4CF) and the proximal row carpectomy (PRC). The purpose of this study was to evaluate the clinical outcome of a different treatment modality: radial styloidectomy and scaphocapitolunate (SCL) arthrodesis. This treatment option is chosen in an effort to maintain the joint contact surface and load transmission across the radiocarpal joint. We conducted a retrospective review of 20 patients (average age 62 years, range: 27 to 75 years) treated from 1994 to 2010. Seven patients were treated for SNAC, 12 patients for SLAC wrists, and 1 for degenerative joint disease following a transscapho-transcapitate perilunar dislocation. Sixteen patients had Herbert screw fixation, and four had Spider plate fixation. All patients had autologous bone graft used for the arthrodesis. The mean follow-up was 4.6 years (range: 2 to 9.6 years). Patients were evaluated clinically and radiographically. Nineteen of 20 arthrodeses healed on an average of 9.6 weeks. One patient was reoperated 8 months after the initial operation with salvage of the SCL arthrodesis with a spider plate with an adequate result. The mean active flexion-extension arc was 70 degrees and the radioulnar deviation arc was 23 degrees. Pain decreased in all patients, 13 of whom were pain free postoperatively. The average postoperative disabilities of arm, shoulder, and hand score was 24. Radiographically, neither radiolunate nor radioscaphoid arthritis was noted on follow-up. SCL arthrodesis with radial styloidectomy resulted in an adequate residual range of motion and pain relief. This method preserves the normal ulnar sided joints of the carpus and

  5. 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...

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

    DEFF Research Database (Denmark)

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

    2007-01-01

    OBJECTIVES: To identify the risk of hand-wrist disorders related to repetitive movements, use of hand force and wrist position in repetitive monotonous work. METHODS: Using questionnaires and physical examinations, the prevalence and incidence of hand-wrist pain and possible extensor tendonitis...... (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...

  7. Proprioceptive control of wrist extensor motor units in humans: dependence on handedness.

    Science.gov (United States)

    Aimonetti, J M; Morin, D; Schmied, A; Vedel, J P; Pagni, S

    1999-01-01

    The effectiveness of the monosynaptic proprioceptive assistance to the wrist extensor motoneurone activity was investigated during voluntary contraction in relation to the subjects' handedness. The reflex responses of 411 single motor units to homonymous tendon taps were recorded in the wrist extensor carpi radialis muscles in both arms of five right-handed and five left-handed subjects. In the right-handed subjects, the motor unit reflex responses were clearly lateralized in favour of their right arm, whereas no side-related differences were observed in the left-handed subjects, whatever the motor units' mechanical properties and firing rates. When the muscle spindle sensitivity was by-passed by electrically stimulating the primary afferents in both arms of three right-handed and three left-handed subjects, no side-related differences were observed in the Hoffmann reflex (H-reflex) amplitude in either of the two lateralization groups. The effectiveness of the primary afferent synapses on to the motoneurones therefore does not seem to depend on the subject's handedness. Without excluding the possibility of structural changes being involved at the periphery, the comparisons carried out on the data obtained using electrical vs mechanical stimulation suggest that the asymmetrical effectiveness of the proprioceptive assistance observed in favour of the right arm in the right-handed subjects might result from either the gamma or beta drive being more efficient. This asymmetry might result from the preferential use of the right hand in skilled movements. In a predominantly right-handed world, however, left-handed people might tend to develop the ability to use their right arm almost as skillfully as their preferred left arm, which could explain the symmetrical effectiveness of the proprioceptive assistance observed here in the left-handers' wrist extensor muscles.

  8. Asymptomatic SLAC wrist: does it exist?

    Science.gov (United States)

    Fassler, P R; Stern, P J; Kiefhaber, T R

    1993-07-01

    Twenty-five patients (30 wrists) had x-ray evidence of scapholunate advanced collapse. Twenty-two wrists had no pain; 12 of these were diagnosed and treated for carpal tunnel syndrome. Eight wrists had mild pain. All patients were reevaluated an average of 2 years later. At that time, 20 wrists were totally free of symptoms and 10 had occasional pain, especially with increased activity (no patients required analgesics). No patient had undergone surgical management for the scapholunate advanced collapse. We believe that there are some patients (especially older and low-demand persons) in whom x-ray evidence of arthritis and clinical findings do not correlate. In these circumstances surgical intervention for treatment of the arthritis may not be warranted.

  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....... The wrists had been reviewed annually and analysis was done on the latest follow-up data. Results 60 patients had been operated (5 bilaterally), 5 wrists had been revised, and 52 were available for follow-up (with the revised cases excluded). The pain scores, QuickDASH scores, ulnar flexion, and supination...... for the whole group were statistically significantly better at follow-up. There were no statistically significant differences between the rheumatoid and the non-rheumatoid patients except for motion, which was better in the non-rheumatoid group. The motion obtained depended on the preoperative motion. Implant...

  10. Abdominal Aortic Aneurysm (AAA)

    Science.gov (United States)

    ... News Physician Resources Professions Site Index A-Z Abdominal Aortic Aneurysm (AAA) Abdominal aortic aneurysm (AAA) occurs when atherosclerosis ... an abdominal aortic aneurysm treated? What is an abdominal aortic aneurysm? The aorta, the largest artery in the body, ...

  11. 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 –

  12. Blood pressure monitor with a position sensor for wrist placement to eliminate hydrostatic pressure effect on blood pressure measurement.

    Science.gov (United States)

    Sato, Hironori; Koshimizu, Hiroshi; Yamashita, Shingo; Ogura, Toshihiko

    2013-01-01

    Accurate measurement of blood pressure at wrist requires the heart and wrist to be kept at the same level to avoid the effects of hydrostatic pressure. Although a blood pressure monitor with a position sensor that guides appropriate forearm angle without use of a chair and desk has already been proposed, a similar functioning device for measuring upper arm blood pressure with a chair and desk is needed. In this study, a calculation model was first used to explore design of such a system. The findings were then implemented into design of a new blood pressure monitor. Results of various methods were compared. The calculation model of the wrist level from arthrosis angles and interarticulars lengths was developed and considered using published anthropometric dimensions. It is compared with 33 volunteer persons' experimental results. The calculated difference of level was -4.1 to 7.9 (cm) with a fixed chair and desk. The experimental result was -3.0 to 5.5 (cm) at left wrist and -2.1 to 6.3(cm) at right wrist. The absolute difference level equals ±4.8 (mmHg) of blood pressure readings according to the calculated result. This meets the AAMI requirements for a blood pressure monitor. In the conclusion, the calculation model is able to effectively evaluate the difference between the heart and wrist level. Improving the method for maintaining wrist to heart level will improve wrist blood pressure measurement accuracy when also sitting in the chair at a desk. The leading angle of user's forearm using a position sensor is shown to work for this purpose.

  13. 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.

  14. 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.

  15. Ultrasonography of the hand, wrist, and elbow.

    Science.gov (United States)

    Bodor, Marko; Fullerton, Brad

    2010-08-01

    High-frequency diagnostic ultrasonography of the hand, wrist and elbow has significant potential to improve the quality of diagnosis and care provided by neuromuscular and musculoskeletal specialists. In patients referred for weakness, pain and numbness of the hand, wrist or elbow, diagnostic ultrasonography can be an adjunct to electrodiagnosis and help in identifying ruptured tendons and treating conditions such as carpal tunnel syndrome or trigger finger. Use of a small high-frequency (>10-15 MHz) transducer, an instrument with a blunt pointed tip to enhance sonopalpation and a model of the hand, wrist and elbow is advised to enhance visualization of small anatomical structures and complex bony contours. A range of conditions, including tendon and ligament ruptures, trigger finger, de Quervain tenosynovitis, intersection syndrome, lateral epicondylitis, and osteoarthritis, is described along with detailed ultrasonography-guided injection techniques for carpal tunnel syndrome and trigger finger.

  16. 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.

  17. 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

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

    Science.gov (United States)

    Ellis, Katherine; Kerr, Jacqueline; Godbole, Suneeta; Lanckriet, Gert; Wing, David; Marshall, Simon

    2014-11-01

    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.

  19. Coordination of intrinsic and extrinsic hand muscle activity as a function of wrist joint angle during two-digit grasping.

    Science.gov (United States)

    Johnston, Jamie A; Bobich, Lisa R; Santello, Marco

    2010-04-26

    Fingertip forces result from the activation of muscles that cross the wrist and muscles whose origins and insertions reside within the hand (extrinsic and intrinsic hand muscles, respectively). Thus, tasks that involve changes in wrist angle affect the moment arm and length, hence the force-producing capabilities, of extrinsic muscles only. If a grasping task requires the exertion of constant fingertip forces, the Central Nervous System (CNS) may respond to changes in wrist angle by modulating the neural drive to extrinsic or intrinsic muscles only or by co-activating both sets of muscles. To distinguish between these scenarios, we recorded electromyographic (EMG) activity of intrinsic and extrinsic muscles of the thumb and index finger as a function of wrist angle during a two-digit object hold task. We hypothesized that changes in wrist angle would elicit EMG amplitude modulation of the extrinsic and intrinsic hand muscles. In one experimental condition we asked subjects to exert the same digit forces at each wrist angle, whereas in a second condition subjects could choose digit forces for holding the object. EMG activity was significantly modulated in both extrinsic and intrinsic muscles as a function of wrist angle (both p<0.05) but only for the constant force condition. Furthermore, EMG modulation resulted from uniform scaling of EMG amplitude across all muscles. We conclude that the CNS controlled both extrinsic and intrinsic muscles as a muscle synergy. These findings are discussed within the theoretical frameworks of synergies and common neural input across motor nuclei of hand muscles.

  20. 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 ...

  1. Accuracy of a new wrist cuff oscillometric blood pressure device: comparisons with intraarterial and mercury manometer measurements.

    Science.gov (United States)

    Watson, S; Wenzel, R R; di Matteo, C; Meier, B; Lüscher, T F

    1998-12-01

    Accurate measurement of arterial blood pressure is of great importance for the diagnosis and treatment of hypertension. Because of the chronic nature of antihypertensive drug therapy, the involvement of the patient in blood pressure control is desirable. Such an involvement, however, is only feasible if simple, user-friendly, and precise blood pressure measurement devices are available. In this study we tested a new wrist cuff oscillometric blood pressure measurement device in 100 consecutive patients undergoing cardiac catheterization. Blood pressures were simultaneously taken intraarterially (axillary artery) and with a mercury manometer and stethoscope or noninvasive measurement device (OMRON R3). Intraarterial measurements were directly compared with two measurements taken in random order with either an arm cuff mercury manometer or the wrist cuff device. Systolic and diastolic blood pressure as assessed with the mercury manometer was higher, especially when compared with the intraarterial and the wrist cuff values, which were comparable. Correlations of blood pressure values with intraarterial measurement were 0.86 systolic and 0.75 diastolic (P mercury manometer measurements. Reproducibility of both measurements was good for the wrist cuff device ([systolic/diastolic]: r = 0.94/0.92; P mercury manometer (r = 0.97/0.88; P mercury manometer were higher than intraarterial values and those of the wrist cuff. Both noninvasive devices overestimated high diastolic values.

  2. 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.

  3. MR Imaging and US of the Wrist Tendons.

    Science.gov (United States)

    Plotkin, Benjamin; Sampath, Srihari C; Sampath, Srinath C; Motamedi, Kambiz

    2016-10-01

    The tendons of the wrist are commonly symptomatic. They can be injured, infected, or inflamed. Magnetic resonance imaging and ultrasonography are useful tools for evaluating the wrist. Pathologic conditions of the wrist tendons include de Quervain tenosynovitis, extensor carpi ulnaris tendinopathy, rheumatoid tenosynovitis, infectious synovitis, tendon tears, hydroxyapatite deposition disease, intersection syndrome, tenosynovial giant cell tumor, and fibroma of the tendon sheath. In this article, we review the normal appearance of the wrist tendons, discuss relevant anatomy, and give an overview of common pathologic conditions affecting the wrist tendons. Online supplemental material is available for this article. (©)RSNA, 2016.

  4. 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.)

  5. Wrist posture affects hand and forearm muscle stress during tapping.

    Science.gov (United States)

    Qin, Jin; Chen, Hua; Dennerlein, Jack T

    2013-11-01

    Non-neutral wrist posture is a risk factor of the musculoskeletal disorders among computer users. This study aimed to assess internal loads on hand and forearm musculature while tapping in different wrist postures. Ten healthy subjects tapped on a key switch using their index finger in four wrist postures: straight, ulnar deviated, flexed and extended. Torque at the finger and wrist joints were calculated from measured joint postures and fingertip force. Muscle stresses of the six finger muscles and four wrist muscles that balanced the calculated joint torques were estimated using a musculoskeletal model and optimization algorithm minimizing the squared sum of muscle stress. Non-neutral wrist postures resulted in greater muscle stresses than the neutral (straight) wrist posture, and the stress in the extensor muscles were greater than the flexors in all conditions. Wrist extensors stress remained higher than 4.5 N/cm² and wrist flexor stress remained below 0.5 N/cm² during tapping. The sustained high motor unit recruitment of extensors suggests a greater risk than other muscles especially in flexed wrist posture. This study demonstrated from the perspective of internal tissue loading the importance of maintaining neutral wrist posture during keying activities.

  6. 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.

  7. 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

  8. Activities of Daily Life (ADL Recognition using Wrist-worn Accelerometer

    Directory of Open Access Journals (Sweden)

    K. Rajesh Kanna

    2016-06-01

    Full Text Available Activity recognition has become the necessity of smart homes, future factories, and surveillance. Activities independent of body posture predominantly exhibiting gestures involving both arm and the wrist motion supports the use of the wearable sensors for data acquisition. This paper uses an algorithm based prediction method to recognize the Activities of Daily Life (ADL involving activities like mobility, feeding, and functional transfers. The classification of the various activities were carried out by using decision tree – J48 algorithm from the acquired dataset.

  9. Ulnar conduction block at the wrist.

    Science.gov (United States)

    Seror, P

    1999-10-01

    Two cases of ulnar nerve lesions at the wrist are reported. The lesions had an acute onset and exclusively impaired the ulnar motor deep branch. The coexistence of carpal tunnel syndrome in each case allowed an early diagnosis but was somewhat misleading. In both cases, the use of classic motor and sensory conduction studies did not provide clear abnormalities that would have precisely determined the site of the nerve lesion. In both cases, only palmar stimulation of the ulnar motor deep branch showed an important conduction block. This electrodiagnostic finding showed definitively the site of the ulnar nerve lesion at the wrist and excluded proximal ulnar nerve lesions or C8-T1 radiculopathy. In both cases recovery occurred without surgery.

  10. 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

  11. 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

  12. Ulnar nerve entrapment at wrist associated with carpal tunnel syndrome.

    Science.gov (United States)

    Gozke, E; Dortcan, N; Kocer, A; Cetinkaya, M; Akyuz, G; Us, O

    2003-11-01

    In this study, ulnar nerve entrapments at the wrist were investigated using nerve conduction studies in cases with established diagnosis of carpal tunnel syndrome (CTS). Cases with cervical radiculopathy and polyneuropathy as well as patients with ulnar nerve entrapment at elbow were excluded from the study. Fifty-three cases (46 females, seven males) whose ages ranged between 20 and 72 years (mean: 49.31 +/- 13.78) were evaluated. Among 53 cases, 12 (22.6%) bilateral and 41 (77.3%) unilateral CTS were detected. Totally 65 wrists evaluated and prolongation of median nerve wrist-3rd digit distal sensory latencies (DSL; N: 59; 90.7%) and wrist-abductor pollicis brevis distal motor latencies (N: 48; 73.8%) were seen. In six wrists, diagnoses were established with the detection of an increase in the differences between wrist-4th digit DSL of median and ulnar nerve. This test was used if other test results were in normal limits. Prolongation of ulnar nerve wrist-5th digit DSL were found in 12 wrists (18.4%) in cases with CTS. Among these 12 wrists mild (N: 2), moderate (N: 7) and severe (N: 3) CTS were detected. Ulnar nerve motor conduction studies provided normal results. In conclusion, we are in the opinion that for the detection of associated ulnar nerve wrist entrapments, ulnar nerve conduction studies paying special attention to DSL convey importance in established cases with CTS.

  13. 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.

  14. Reconstructing the rheumatoid wrist: a utility analysis comparing total wrist fusion and total wrist arthroplasty from the perspectives of rheumatologists and hand surgeons.

    Science.gov (United States)

    Cavaliere, Christi M; Oppenheimer, Adam J; Chung, Kevin C

    2010-03-01

    Rheumatologists and hand surgeons have historically demonstrated strikingly divergent attitudes toward the benefits of surgical intervention, either total wrist fusion or total wrist arthroplasty, for the rheumatoid wrist. A utility analysis was conducted to compare a national random sample of hand surgeons and rheumatologists regarding their opinions about surgical management of severe rheumatoid wrist disease. A web-based trade-off utility survey was developed, and participants were presented with survey scenarios comparing well-controlled rheumatoid arthritis with operative and non-operative management. Utility values were calculated for each scenario, and a decision analytic model was constructed. Utility values for rheumatologists and hand surgeons did not differ significantly for any scenario. Total wrist arthroplasty was associated with the highest expected gain in quality-adjusted life-years for each subgroup. This decision analytic model demonstrates similar opinions between two subspecialties that have historically demonstrated divergent attitudes towards rheumatoid hand surgery.

  15. Wrist dermatitis: contact allergy to neoprene in a keyboard wrist rest.

    Science.gov (United States)

    Johnson, R C; Elston, D M

    1997-09-01

    A case of allergic contact dermatitis to a keyboard wrist rest containing neoprene is reported. The patient, who had a history of sensitivity to rubber products, developed an acute vesicular reaction of the palmar aspects of her distal wrists, followed by eczematous patches of her extremities and face. Treatment with prednisone, a 3-week tapering dose (60, 40, 20 mg), cleared the dermatitis. The widespread uses of neoprene are discussed and suggest that neoprene will become a common source of contact dermatitis as the potential sources of exposure increase.

  16. Rehabilitation of the wrist and hand following sports injury.

    Science.gov (United States)

    Jaworski, Carrie A; Krause, Michelle; Brown, Jennifer

    2010-01-01

    In sports, wrist and hand injuries are commonplace. Too often, injuries to these areas can be under-treated and left for further complications to arise. While some injuries to the wrist and hand can be treated conservatively with immediate return to play, others require a more in-depth assessment prior to return to play. This article describes the most common wrist and hand injuries in sport, and provides information related to current treatment approaches.

  17. Abdominal radiation - discharge

    Science.gov (United States)

    Radiation - abdomen - discharge; Cancer - abdominal radiation; Lymphoma - abdominal radiation ... When you have radiation treatment for cancer, your body goes through changes. About 2 weeks after radiation treatment starts, you might notice changes ...

  18. Abdominal aortic aneurysm

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/article/000162.htm Abdominal aortic aneurysm To use the sharing features on this page, ... blood to the abdomen, pelvis, and legs. An abdominal aortic aneurysm occurs when an area of the aorta becomes ...

  19. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... accurate. In emergency cases, it can reveal internal injuries and bleeding quickly enough to help save lives. ... kidney and bladder stones. abdominal aortic aneurysms (AAA), injuries to abdominal organs such as the spleen, liver, ...

  20. 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.

  1. Post trauma abdominal cocoon.

    Science.gov (United States)

    Kaur, Supreet; Doley, Rudra Prasad; Chabbhra, Mohinish; Kapoor, Rajeev; Wig, Jaidev

    2015-01-01

    Abdominal cocoon or sclerosing peritonitis refers to a rare cause of intestinal obstruction due to formation of a membrane encasing the bowel. We report a case of abdominal cocoon post blunt trauma abdomen. The patient presented with a history of subacute intestinal obstruction and a mobile abdomen lump. Abdominal cocoon was diagnosed on computed tomography. He underwent adhesiolysis with excision of membrane.

  2. Personal technique for wrist dorsal approach.

    Science.gov (United States)

    Marcuzzi, A; Leigheb, M; Russomando, A; Landi, A

    2014-09-24

    In hand disorders surgical procedures are more and more widely used and often it's necessary to approach the wrist by the dorsal way. Beneath anatomy of this region is well known, there is still room enough to develop new surgical exposure techniques mostly related to physiology and biomechanics. Our goals are to present an innovative surgical dorsal exposure of the wrist, to show its use for different problems solving, and to evaluate its mini-invasive and functional outcome. Our inedited surgical technique is presented. Since November 1999 to February 2008, this technique has been used by the same surgeon in 60 cases for different pathologies and procedures: 14 SNAC-SLAC wrists III-IV treated by proximal row resection and Resurface-Capitate Pyrocarbon Implant (RCPI), 2 Fenton syndromes by bone graft and RCPI, 6 SNACSLAC II by proximal row resection +/- radial styloidectomy, 2 SLAC III by scaphoidectomy and capito-lunate arthrodesis, 12 scapho-lunate recent dissociations by ligamentoplasty (double approach), 4 scapho-lunate inveterate dissociations by Cuenod Saffar-Romano modified technique and 4 by synthetic ligaments, 1 fracture of the scaphoid proximal pole by synthesis-revascularization-S.L.ligament reconstruction, 15 Kienbock's diseases revascularized by II m.c. artery +/- radial osteotomy. Patients have been evaluated at follow up through the DASH disability questionnaire, the Mayo score for the force, ROM, pain, satisfaction grade. Results are good and encouraging for these applications. In conclusion this new technique with its limited exposure permits an early mobilization with a lower risk of stiffness and can be considered mini-invasive.

  3. 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

  4. 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....

  5. Periprosthetic osteolysis after total wrist arthroplasty

    DEFF Research Database (Denmark)

    Boeckstyns, Michel E H; Herzberg, Guillaume

    2014-01-01

    Background and Literature Review Periprosthetic osteolysis (PPO) after second- or third-generation total wrist arthroplasty (TWA), with or without evident loosening of the implant components, has previously been reported in the literature, but rarely in a systematic way. Purpose The purpose....... Conclusion Periprosthetic loosening is frequent following a TWA. In our series it was not necessarily associated with implant loosening and seemed to stabilize within 3 years. Close and continued observation is, however, recommended. Level of Evidence Therapeutic IV....

  6. Prosthesis of the wrist-joint

    Energy Technology Data Exchange (ETDEWEB)

    Feldmeier, C.

    1983-02-25

    Function of the hand-joint and the well-being of patients can be severely affected by arthrosis of the wrist-joint. Therapeutically, arthrodesis usually results in a painfree status of stiffness. A painless and well functioning joint can be achieved by alloplastic joint replacement or resurfacing. The possibilities and clinical results in cases of arthrosis of the carpo-metacarpal joint of the thumb, pseudarthrosis of the scaphoid, aseptic necrosis of the Lunate and severe arthrosis of the radio-carpal joint are demonstrated.

  7. A method to qualitatively assess arm use in stroke survivors in the home environment.

    Science.gov (United States)

    Leuenberger, Kaspar; Gonzenbach, Roman; Wachter, Susanne; Luft, Andreas; Gassert, Roger

    2017-01-01

    Wearable sensor technology has enabled unobtrusive monitoring of arm movements of stroke survivors in the home environment. However, the most widely established method, based on activity counts, provides quantitative rather than qualitative information on arm without functional insights, and is sensitive to passive arm movements during ambulatory activities. We propose a method to quantify functionally relevant arm use in stroke survivors relying on a single wrist-worn inertial measurement unit. Orientation of the forearm during movements is measured in order identify gross arm movements. The method is validated in 10 subacute/chronic stroke survivors wearing inertial sensors at 5 anatomical locations for 48 h. Measurements are compared to conventional activity counts and to a test for gross manual dexterity. Duration of gross arm movements of the paretic arm correlated significantly better with the Box and Block Test ([Formula: see text]) than conventional activity counts when walking phases were included ([Formula: see text]), and similar results were found when comparing ratios of paretic and non-paretic arms for gross movements and activity counts. The proposed gross arm movement metric is robust against passive arm movements during ambulatory activities and requires only a single-sensor module placed at the paretic wrist for the assessment of functionally relevant arm use.

  8. The arthritic wrist. II--the degenerative wrist: indications for different surgical treatments.

    Science.gov (United States)

    Laulan, J; Bacle, G; de Bodman, C; Najihi, N; Richou, J; Simon, E; Saint-Cast, Y; Obert, L; Saraux, A; Bellemère, P; Dréano, T; Le Bourg, M; Le Nen, D

    2011-06-01

    For the patient (and the surgeon) the ideal wrist is one that has good mobility, however very often the optimal surgical treatment is one that provides effective pain relief. The patient must be informed of the potential complications and limitations of each procedure. The patient's psychological profile and functional requirements will determine how well he/she adapts to the changes. Also, each surgeon has beliefs and personal experiences that influence the treatment decision and final result. Proximal row carpectomy (PRC) and the Watson procedure are two reference operations for osteoarthritis secondary to scapholunate instability and scaphoid non-union (SLAC and SNAC). Beyond the early complications and drawbacks specific to each, they provide good results that are maintained over time. PRC, which can be performed up to Stage II, is mainly indicated in patients with moderate functional demands, while the Watson procedure is more often done on a patient who performs manual labour, as long as the radiolunate joint space is maintained. Complete denervation is effective in three out of four cases and preserves the remaining mobility. Because of its low morbidity, the procedure can be suggested in patients with a mobile wrist and low functional demands or in older patients, independent of their wrist mobility. Total wrist fusion is not only a rescue procedure. For a young patient who performs heavy manual labour with extensive osteoarthritis and progressive forms of Kienböck's disease, this procedure provides the greatest chance of returning to work and not being socially outcast. The role of osteochondral autografts, implants and wrist prostheses in the treatment arsenal need to be better defined.

  9. [Shortening arthrodesis of three wrist bones].

    Science.gov (United States)

    Delattre, O; Dupont, P; Reau, A F; Rouvillain, J L; Mousselard, H; Catonné, Y

    1997-01-01

    In advanced cases of wrist osteoarthritis with lesions of the radio-scaphoid and mediocarpal joints, and when a proximal row carpectomy is not possible because of lesions of the head of the capitate, we suggest a new technique: The hamate-capitate-lunate shortening arthrodesis with a scaphoid-triquetral resection. The good results observed with proximal row carpectomies, and particularly their long-term reliability, have encouraged us on this new path. Effectively, this operation takes the concept of proximal row carpectomy one step further by reconstructing the head of the capitate with the lunate whose proximal articular surface is often not deteriorated even in very advanced cases of radio and mediocarpal osteoarthritis. The two theoretical concepts of this operation are the shortening of the carpus and respect of the physiological congruence of the radio-lunate joint, the goal being obtain similar results those with proximal row carpectomy, particularly concerning mobility. We present our first two cases with this technique. This new procedure is an alternative to the four bone arthrodesis, particularly in SLAC wrist sequellae when they have evolved to the stage of radio and mediocarpal osteoarthritis.

  10. 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...

  11. Osteoarthritis of the Wrist STT Joint and Radiocarpal Joint

    Directory of Open Access Journals (Sweden)

    Ronit Wollstein

    2012-01-01

    Full Text Available Our understanding of wrist osteoarthritis (OA lags behind that of other joints, possibly due to the complexity of wrist biomechanics and the importance of ligamentous forces in the function of the wrist. Scaphotrapeziotrapezoidal (STT OA is common, but its role in wrist clinical pathology and biomechanics is unclear. We identified the prevalence of radiographic STT joint OA in our hand clinic population and defined the relationship between STT and radiocarpal OA in wrist radiographs. One hundred consecutive wrist clinical and radiographic exams were retrospectively reviewed. Radiographs were evaluated for the presence and stage of OA. The mean age was 61.3 (±14.5 years. The radiographic occurrence of STT joint OA was 59% and of radiocarpal (RC OA was 29%. Radiographic STT and RC joint OA were inversely related. Tenderness over the STT joint in physical exam was not associated with OA in the STT or other joints. STT OA in our series was not related to wrist pain. These findings support the discrepancy between radiographic and cadaver findings and clinically significant OA in this joint. The inverse relationship between STT and RC OA, as seen in scapholunate advanced collapse (SLAC wrist, requires further biomechanical study.

  12. Osteoarthritis of the Wrist STT Joint and Radiocarpal Joint.

    Science.gov (United States)

    Wollstein, Ronit; Clavijo, Julio; Gilula, Louis A

    2012-01-01

    Our understanding of wrist osteoarthritis (OA) lags behind that of other joints, possibly due to the complexity of wrist biomechanics and the importance of ligamentous forces in the function of the wrist. Scaphotrapeziotrapezoidal (STT) OA is common, but its role in wrist clinical pathology and biomechanics is unclear. We identified the prevalence of radiographic STT joint OA in our hand clinic population and defined the relationship between STT and radiocarpal OA in wrist radiographs. One hundred consecutive wrist clinical and radiographic exams were retrospectively reviewed. Radiographs were evaluated for the presence and stage of OA. The mean age was 61.3 (±14.5) years. The radiographic occurrence of STT joint OA was 59% and of radiocarpal (RC) OA was 29%. Radiographic STT and RC joint OA were inversely related. Tenderness over the STT joint in physical exam was not associated with OA in the STT or other joints. STT OA in our series was not related to wrist pain. These findings support the discrepancy between radiographic and cadaver findings and clinically significant OA in this joint. The inverse relationship between STT and RC OA, as seen in scapholunate advanced collapse (SLAC) wrist, requires further biomechanical study.

  13. 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.

  14. Wrist and forearm postures and motions during typing.

    Science.gov (United States)

    Serina, E R; Tal, R; Rempel, D

    1999-07-01

    Awkward upper extremity postures and repetitive wrist motions have been identified by some studies as risk factors for upper extremity musculoskeletal disorders during keyboard work. However, accurate body postures and joint motions of typists typing on standardized workstations are not known. A laboratory study was conducted to continuously measure wrist and forearm postures and motions of 25 subjects while they typed for 10-15 min at a standard computer workstation adjusted to the subjects' anthropometry. Electrogoniometers continuously recorded wrist and forearm angles. Joint angular velocities and accelerations were calculated from the postural data. The results indicate that wrist and forearm postures during typing were sustained at non-neutral angles; mean wrist extension angle was 23.4 +/- 10.9 degrees on the left and 19.9 +/- 8.6 degrees on the right. Mean ulnar deviation was 14.7 +/- 10.1 degrees on the left and 18.6 +/- 5.8 degrees on the right. More than 73% of subjects typed with the left or right wrist in greater than 15 degrees extension and more than 20% typed with the left or right wrist in greater than 20 degrees ulnar deviation. Joint angles and motions while typing on an adjusted computer workstation were not predictable based on anthropometry or typing speed and varied widely between subjects. Wrist motions are rapid and are similar in magnitude to wrist motions of industrial workers performing jobs having a high risk for developing cumulative trauma disorders. The magnitude of the dynamic components suggests that wrist joint motions may need to be evaluated as a risk factor for musculoskeletal disorders during typing.

  15. Abdominal epilepsy in chronic recurrent abdominal pain

    Directory of Open Access Journals (Sweden)

    V Y Kshirsagar

    2012-01-01

    Full Text Available Background: Abdominal epilepsy (AE is an uncommon cause for chronic recurrent abdominal pain in children and adults. It is characterized by paroxysmal episode of abdominal pain, diverse abdominal complaints, definite electroencephalogram (EEG abnormalities and favorable response to the introduction of anti-epileptic drugs (AED. We studied 150 children with chronic recurrent abdominal pain and after exclusion of more common etiologies for the presenting complaints; workup proceeded with an EEG. We found 111 (74% children with an abnormal EEG and 39 (26% children with normal EEG. All children were subjected to AED (Oxcarbazepine and 139 (92% children responded to AED out of which 111 (74% children had an abnormal EEG and 27 (18% had a normal EEG. On further follow-up the patients were symptom free, which helped us to confirm the clinical diagnosis. Context: Recurrent chronic abdominal pain is a common problem encountered by pediatricians. Variety of investigations are done to come to a diagnosis but a cause is rarely found. In such children diagnosis of AE should be considered and an EEG will confirm the diagnosis and treated with AED. Aims: To find the incidence of AE in children presenting with chronic recurrent abdominal pain and to correlate EEG findings and their clinical response to empirical AEDs in both cases and control. Settings and Design: Krishna Institute of Medical Sciences University, Karad, Maharashtra, India. Prospective analytical study. Materials and Methods: A total of 150 children with chronic recurrent abdominal pain were studied by investigations to rule out common causes of abdominal pain and an EEG. All children were then started with AED oxycarbamezepine and their response to the treatment was noted. Results: 111 (74% of the total 150 children showed a positive EEG change suggestive of epileptogenic activity and of which 75 (67.56% were females and 36 (32.43% were male, majority of children were in the age of group of 9

  16. 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

  17. Classification of Phantom Finger, Hand, Wrist, and Elbow Voluntary Gestures in Transhumeral Amputees With sEMG.

    Science.gov (United States)

    Jarrasse, Nathanael; Nicol, Caroline; Touillet, Amelie; Richer, Florian; Martinet, Noel; Paysant, Jean; de Graaf, Jozina Bernardina

    2017-01-01

    Decoding finger and hand movements from sEMG electrodes placed on the forearm of transradial amputees has been commonly studied by many research groups. A few recent studies have shown an interesting phenomenon: simple correlations between distal phantom finger, hand and wrist voluntary movements and muscle activity in the residual upper arm in transhumeral amputees, i.e., of muscle groups that, prior to amputation, had no physical effect on the concerned hand and wrist joints. In this study, we are going further into the exploration of this phenomenon by setting up an evaluation study of phantom finger, hand, wrist and elbow (if present) movement classification based on the analysis of surface electromyographic (sEMG) signals measured by multiple electrodes placed on the residual upper arm of five transhumeral amputees with a controllable phantom limb who did not undergo any reinnervation surgery. We showed that with a state-of-the-art classification architecture, it is possible to correctly classify phantom limb activity (up to 14 movements) with a rather important average success (over 80% if considering basic sets of six hand, wrist and elbow movements) and to use this pattern recognition output to give online control of a device (here a graphical interface) to these transhumeral amputees. Beyond changing the way the phantom limb condition is apprehended by both patients and clinicians, such results could pave the road towards a new control approach for transhumeral amputated patients with a voluntary controllable phantom limb. This could ease and extend their control abilities of functional upper limb prosthetics with multiple active joints without undergoing muscular reinnervation surgery.

  18. Abdominal Decompression in Children

    Directory of Open Access Journals (Sweden)

    J. Chiaka Ejike

    2012-01-01

    Full Text Available Abdominal compartment syndrome (ACS increases the risk for mortality in critically ill children. It occurs in association with a wide variety of medical and surgical diagnoses. Management of ACS involves recognizing the development of intra-abdominal hypertension (IAH by intra-abdominal pressure (IAP monitoring, treating the underlying cause, and preventing progression to ACS by lowering IAP. When ACS is already present, supporting dysfunctional organs and decreasing IAP to prevent new organ involvement become an additional focus of therapy. Medical management strategies to achieve these goals should be employed but when medical management fails, timely abdominal decompression is essential to reduce the risk of mortality. A literature review was performed to understand the role and outcomes of abdominal decompression among children with ACS. Abdominal decompression appears to have a positive effect on patient survival. However, prospective randomized studies are needed to fully understand the indications and impact of these therapies on survival in children.

  19. Abdominal Compartment Syndrome

    OpenAIRE

    Ovchinnikov V.А.; Sokolov V.А.

    2013-01-01

    We considered one of the most complicated problems of surgery and intensive care — abdominal compartment syndrome. It is a severe, and in some cases lethal complication developing in major injuries and pathology of abdominal cavity and retroperitoneal space, as well as in extra-abdominal pathology. In addition, compartment syndrome can be the complication of a number of surgical procedures accompanied primarily by laparotomy wound closure with tissue tension. We demonstrated the classificatio...

  20. Abdominal Compartment Syndrome

    Directory of Open Access Journals (Sweden)

    Pınar Zeyneloğlu

    2015-04-01

    Full Text Available Intraabdominal hypertension and Abdominal compartment syndrome are causes of morbidity and mortality in critical care patients. Timely diagnosis and treatment may improve organ functions. Intra-abdominal pressure monitoring is vital during evaluation of the patients and in the management algorithms. The incidence, definition and risk factors, clinical presentation, diagnosis and management of intraabdominal hypertension and Abdominal compartment syndrome were reviewed here.

  1. Post trauma abdominal cocoon

    Directory of Open Access Journals (Sweden)

    Supreet Kaur

    2015-01-01

    Full Text Available Abdominal cocoon or sclerosing peritonitis refers to a rare cause of intestinal obstruction due to formation of a membrane encasing the bowel. We report a case of abdominal cocoon post blunt trauma abdomen. The patient presented with a history of subacute intestinal obstruction and a mobile abdomen lump. Abdominal cocoon was diagnosed on computed tomography. He underwent adhesiolysis with excision of membrane.

  2. Isolated ulnar shaft fractures. Comparison of treatment by a functional brace and long-arm cast

    DEFF Research Database (Denmark)

    Gebuhr, Peter Henrik; Hölmich, P; Orsnes, T;

    1992-01-01

    In a prospective study, we randomly allocated 39 patients with isolated fractures of the lower two-thirds of the ulnar shaft to treatment either by a prefabricated functional brace or a long-arm cast. Significantly better wrist function and a higher percentage of satisfied patients were found in ...

  3. 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.

  4. Pointing with the wrist: a postural model for Donders' law.

    Science.gov (United States)

    Campolo, Domenico; Widjaja, Ferdinan; Esmaeili, Mohammad; Burdet, Etienne

    2011-07-01

    The central nervous system uses stereotypical combinations of the three wrist/forearm joint angles to point in a given (2D) direction in space. In this paper, we first confirm and analyze this Donders' law for the wrist as well as the distributions of the joint angles. We find that the quadratic surfaces fitting the experimental wrist configurations during pointing tasks are characterized by a subject-specific Koenderink shape index and by a bias due to the prono-supination angle distribution. We then introduce a simple postural model using only four parameters to explain these characteristics in a pointing task. The model specifies the redundancy of the pointing task by determining the one-dimensional task-equivalent manifold (TEM), parameterized via wrist torsion. For every pointing direction, the torsion is obtained by the concurrent minimization of an extrinsic cost, which guarantees minimal angle rotations (similar to Listing's law for eye movements) and of an intrinsic cost, which penalizes wrist configurations away from comfortable postures. This allows simulating the sequence of wrist orientations to point at eight peripheral targets, from a central one, passing through intermediate points. The simulation first shows that in contrast to eye movements, which can be predicted by only considering the extrinsic cost (i.e., Listing's law), both costs are necessary to account for the wrist/forearm experimental data. Second, fitting the synthetic Donders' law from the simulated task with a quadratic surface yields similar fitting errors compared to experimental data.

  5. 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).

  6. Recurrent Abdominal Pain

    Science.gov (United States)

    Banez, Gerard A.; Gallagher, Heather M.

    2006-01-01

    The purpose of this article is to provide an empirically informed but clinically oriented overview of behavioral treatment of recurrent abdominal pain. The epidemiology and scope of recurrent abdominal pain are presented. Referral process and procedures are discussed, and standardized approaches to assessment are summarized. Treatment protocols…

  7. [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.

  8. Gastrointestinal causes of abdominal pain.

    Science.gov (United States)

    Marsicano, Elizabeth; Vuong, Giao Michael; Prather, Charlene M

    2014-09-01

    Gastrointestinal causes of abdominal pain are numerous. These causes are reviewed in brief here, divided into 2 categories: acute abdominal pain and chronic abdominal pain. They are further subcategorized by location of pain as it pertains to the abdomen.

  9. Functional Abdominal Pain in Children

    Science.gov (United States)

    ... functional abdominal pain. Functional abdominal pain can be intermittent (recurrent abdominal pain or RAP) or continuous. Although ... tests are needed or whether a trial of diet changes, stress management or medication may be started. ...

  10. 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.

  11. Intraneural fibroma of the median nerve at the wrist.

    Science.gov (United States)

    Burrows, Anthony M; Folpe, Andrew L; Wenger, Doris E; Spinner, Robert J

    2014-06-01

    Distal median neuropathy from carpal tunnel syndrome is the most well known lesion affecting the median nerve. Mass lesions may affect the nerve at the wrist. We present to our knowledge the first histologically confirmed case of an intraneural fibroma.

  12. 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...

  13. Scaphocapitolunate arthrodesis and radial styloidectomy: a treatment option for posttraumatic degenerative wrist disease.

    Science.gov (United States)

    Klausmeyer, Melissa; Fernandez, Diego

    2012-11-01

    Longstanding scaphoid nonunion, scaphoid malunion, and chronic scapholunate dissociation result in malalignment of the carpal bones, progressive carpal collapse, instability, and osteoarthritis of the wrist. The most commonly used procedures to treat scaphoid nonunion advanced collapse (SNAC) and scapholunate advanced collapse (SLAC) wrists are the four-corner fusion (4CF) and the proximal row carpectomy (PRC). Here we describe a different treatment option: radial styloidectomy and scaphocapitolunate (SCL) arthrodesis. This treatment option is chosen in an effort to maintain the joint contact surface and load transmission across the radiocarpal joint. Twenty patients were treated by the senior author (DLF) with this method with a mean follow-up of 4.6 years. Pain decreased in all patients, and 13 patients were pain-free postoperatively. The average Disabilities of the Arm, Shoulder, and Hand (DASH) scores decreased from 44 preoperatively to 23 postoperatively. One patient's course was complicated by nonunion, which was successfully treated with revision of the SCL arthrodesis. On follow-up radiographs, no patient had progressive osteoarthritis. This method preserves the normal ulnar-sided joints of the carpus, which are sacrificed during 4CF, and maintains a more physiologic joint surface for radiocarpal load sharing.

  14. 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.

  15. Treatment of wrist deformities in children with arthrogryposis multiplex congenita

    Directory of Open Access Journals (Sweden)

    Евгения Александровна Коченова

    2016-03-01

    Full Text Available Introduction: Treatment of wrist contractures in children with arthrogryposis multiplex congenita (AMC is extremely problematic because of the high incidence of recurrence. This study aimed to improve the outcome of wrist contracture treatment in children with AMC.Materials and Methods: A total of 90 patients (162 wrists were examined and treated. Patients were assessed using a number of clinical, radiological, and electrophysiological examinations. There are several different clinical variants of wrist contracture, including flexion contracture of the wrist, flexion contracture associated with ulnar deviation, and isolated ulnar deviation of the wrist. Patients were divided into three groups according to the level of spinal cord lesion: С6-С7, С5-С8, and С5-Th1. As the number of damaged spinal cord segments increased, the amplitude of passive and active movements, degree of passive correction, muscle power, and wrist function decreased. Surgical treatment involved the following three approaches: tendon transfers, tendon transfers and carpal wedge osteotomy, and tendon transfers with carpal wedge osteotomy and shortened osteotomy of the forearm.Results: Analysis of treatment results showed that patients with segmental spinal cord lesions at the  С6-С7 and С5-С8 level were mostly associated with a good outcome, whereas patients with lesions at the  С5-Th1 level achieved satisfactory outcomes.Conclusions: Patients with segmental lesions of the spinal cord at the С6-С7 and С5-С8 level were associated with restoration of active wrist extension up to the neutral position or more and were expected to achieve significant improvement of hand function. Patients with spinal cord lesions at the C5-Th1 level exhibited significant lesions of the muscles, along with bone deformities. Consequently, surgical treatment could only achieve functional wrist position with minimal improvement of hand function. Using differential approaches in the

  16. Should we think about wrist extensor after flexor tendon repair?

    Directory of Open Access Journals (Sweden)

    Aline M Ferreira

    2013-07-01

    Full Text Available Objective: To evaluate the activity of wrist extensor muscle, correlating with wrist motion during gripping after flexor tendon repair. Design: Cross-sectional clinical measurement study. Setting: Laboratory for biomechanics and rehabilitation. Subjects: A total of 11 patients submitted to rehabilitation by early passive motion of the fingers with wrist flexion position were evaluated after 8 weeks of fingers flexor tendon repair and 11 healthy volunteers, all ranging from 20 to 37 years of age. Intervention: Volunteers performed an isometric standardized gripping task. Main measures: We used electrogoniometry to analyze wrist range of motion and surface electromyography, considering 100% maximum voluntary contraction to represent the amplitude of electromyographic activity of the extensor carpi radialis and flexor digitorum superficialis. Results: Patients with flexor tendon repair showed co-activation deficit between wrist extensor (extensor carpi radialis and flexor finger muscles (flexor digitorum superficialis during gripping in the intermediate phase of rehabilitation, despite some recovering mobility for wrist extension (p ≤ 0.05. A moderate correlation between range of motion and extensor carpi radialis was present only for injured group (r = 0.32. Total active motion score, which represents finger active excursion, was regular or poor in 65% of cases, all with nerve repair associated. Conclusion: Wrist extensors have an important synergist role at handgrip, although some imbalance can be present after flexor tendon repair. These preliminary findings suggest that emphasis could be directed to add synergistic wrist motion in rehabilitation protocols after flexor tendon repair. Future studies with early active rehabilitation are necessary.

  17. 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.

  18. 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. ...

  19. [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.

  20. Abdominal wall endometriosis.

    Science.gov (United States)

    Upadhyaya, P; Karak, A K; Sinha, A K; Kumar, B; Karki, S; Agarwal, C S

    2010-01-01

    Endometriosis of abdominal wall scar following operation on uterus and tubes is extremely rare. The late onset of symptoms after surgery is the usual cause of misdiagnosis. Scar endometriosis is a rare disease which is difficult to diagnose and should always be considered as a differential diagnosis of painful abdominal masses in women. The diagnosis is made only after excision and histopathology of the lesion. Preoperative differentials include hernia, lipoma, suture granuloma or abscess. Hence an awareness of the entity avoids delay in diagnosis, helps clinicians to a more tailored treatment and also avoids unnecessary referrals. We report a case of abdominal endometriosis. The definitive diagnosis of which was established by histopathological studies.

  1. Congenital Abdominal Wall Defects

    DEFF Research Database (Denmark)

    Risby, Kirsten; Jakobsen, Marianne Skytte; Qvist, Niels

    2016-01-01

    complications were seen in five (15%) children: four had detachment of the mesh and one patient developed abdominal compartment syndrome. Mesh related clinical infection was observed in five children. In hospital mortality occurred in four cases (2 gastroschisis and 2 omphalocele) and was not procedure......OBJECTIVE: To evaluate the clinical utility of GORE® DUALMESH (GDM) in the staged closure of large congenital abdominal wall defects. MATERIALS AND METHODS: Data of patients with congenital abdominal wall defects managed with GDM was analyzed for outcome regarding complete fascial closure; mesh...

  2. 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.

  3. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... is done because a potential abnormality needs further evaluation with additional views or a special imaging technique. ... GI) contrast exams and ultrasound are preferred for evaluation of acute abdominal conditions in babies, such as ...

  4. [The abdominal catastrophe].

    Science.gov (United States)

    Seiler, Christian A

    2011-08-01

    Patients with an abdominal catastrophe are in urgent need of early, interdisciplinary medical help. The treatment plan should be based on medical priorities and clear leadership. First priority should be given to achieve optimal oxygenation of blood and stabilization of circulation during all treatment-phases. The sicker the patient, the less invasive the (surgical) treatment should to be, which means "damage control only". This short article describes 7 important, pragmatic rules that will help to increase the survival of a patient with an abdominal catastrophe. Preexisting morbidity and risk factors must be included in the overall risk-evaluation for every therapeutic intervention. The challenge in patients with an abdominal catastrophe is to carefully balance the therapeutic stress and the existing resistance of the individual patient. The best way to avoid abdominal disaster, however, is its prevention.

  5. 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 ...

  6. Abdominal x-ray

    Science.gov (United States)

    ... are, or may be, pregnant. Alternative Names Abdominal film; X-ray - abdomen; Flat plate; KUB x-ray ... Assistant Studies, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington, Seattle, WA. Also ...

  7. User and clinician perspectives on DEKA arm: results of VA study to optimize DEKA arm.

    Science.gov (United States)

    Resnik, Linda; Klinger, Shana Lieberman; Etter, Katherine

    2014-01-01

    This article summarizes feedback from Department of Veterans Affairs (VA) subjects and clinicians gathered during the VA optimization study of the DEKA Arm. VA subjects and clinicians tested two DEKA Arm prototypes (second-generation [gen 2] and third-generation [gen 3]). Features of the prototypes in three configurations are described. DEKA used feedback from the VA optimization study and from their own subjects to refine the gen 2 prototype. Thirty-three unique subjects participated in the VA evaluation; 26 participated in the gen 2 evaluation (1 subject participated twice), 13 participated in the gen 3 evaluation, and 5 participated in both gen 2 and gen 3 evaluations. Subject data were gathered through structured and open-ended surveys, interviews, and audio- and videotaped sessions. Study prosthetists and therapists provided ongoing feedback and completed surveys at the end of each subject's protocol. Eleven categories of feedback were identified: weight, cosmesis, hand grips, wrist design, elbow design, end-point control, foot controls, batteries and chargers, visual notifications, tactor, and socket features. Final feedback on the gen 3 was generally positive, particularly regarding improvements in wrist design, visual notifications, foot controls, end-point control, and cosmesis. Additional refinements to make the device lighter in weight, eliminate external wires and cables, and eliminate the external battery may further enhance its perceived usability and acceptability.

  8. Linear abdominal trauma.

    Science.gov (United States)

    Danto, L A; Wolfman, E F

    1976-03-01

    Three cases of blunt abdominal trauma are presented to exemplify the mechanism of trauma and the problems of diagnosis associated with any linear blow to the abdomen. The mechanisms of visceral injury are reviewed, and special attention is directed to the abdominal wall injury that can be present in these patients. This injury has special implications in directing the operative approach and repair. An unusual aortic occlusion is described which is peculiar to this type of injury.

  9. 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.

  10. 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

  11. 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.

  12. Use of Condition-Specific Patient-Reported Outcome Measures in Clinical Trials among Patients with Wrist Osteoarthritis: A Systematic Review

    Directory of Open Access Journals (Sweden)

    Steven M. McPhail

    2012-01-01

    Full Text Available Background. This paper aimed to identify condition-specific patient-reported outcome measures used in clinical trials among people with wrist osteoarthritis and summarise empirical peer-reviewed evidence supporting their reliability, validity, and responsiveness to change. Methods. A systematic review of randomised controlled trials among people with wrist osteoarthritis was undertaken. Studies reporting reliability, validity, or responsiveness were identified using a systematic reverse citation trail audit procedure. Psychometric properties of the instruments were examined against predefined criteria and summarised. Results. Thirteen clinical trials met inclusion criteria. The most common patient-reported outcome was the disabilities of the arm, shoulder, and hand questionnaire (DASH. The DASH, the Michigan Hand Outcomes Questionnaire (MHQ, the Patient Evaluation Measure (PEM, and the Patient-Reported Wrist Evaluation (PRWE had evidence supporting their reliability, validity, and responsiveness. A post-hoc review of excluded studies revealed the AUSCAN Osteoarthritis Hand Index as another suitable instrument that had favourable reliability, validity, and responsiveness. Conclusions. The DASH, MHQ, and AUSCAN Osteoarthritis Hand Index instruments were supported by the most favourable empirical evidence for validity, reliability, and responsiveness. The PEM and PRWE also had favourable empirical evidence reported for these elements. Further psychometric testing of these instruments among people with wrist osteoarthritis is warranted.

  13. 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.

  14. Damping of the wrist joint during voluntary movement.

    Science.gov (United States)

    Milner, T E; Cloutier, C

    1998-10-01

    Damping characteristics of the musculoskeletal system were investigated during rapid voluntary wrist flexion movements. Oscillations about the final position were induced by introducing a load with the characteristics of negative damping, which artificially reduced the damping of the wrist. Subjects responded to increases in the negatively damped load by stronger cocontraction of wrist flexor and extensor muscles during the stabilization phase of the movement. However, their ability to counteract the effects of the negatively damped load diminished as the negative damping increased. Consequently, the number and frequency of oscillations increased. The oscillations were accompanied by phase-locked muscle activity superimposed on underlying tonic muscle activation. The wrist stiffness and damping coefficient increased with the increased cocontraction that accompanied more negatively damped loads, although changes in the damping coefficient were less systematic than the stiffness. Analysis of successive half-cycles of the oscillation revealed that the wrist stiffness and damping coefficient increased, despite decreasing muscle activation, as oscillation amplitude and velocity declined. This indicates that the inverse dependence of the damping coefficient on oscillation velocity contributes significantly to damping of joint motion. It is suggested that this property helps to offset a negative contribution to damping from the stretch reflex.

  15. 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.

  16. [Four corner fusion in patients with wrist arthritis].

    Science.gov (United States)

    Vázquez-Alonso, María Francisca; Viñas-Silva, Alberto

    2016-01-01

    Scapholunate advance collapse (SLAC) and Scaphoid nonunion advance collapse (SNAC), are the two most common patterns of postraumatic wrist arthritis. SLAC wrist develops after attenuation, either traumatically or atraumatically, of the scapholunate ligament. Atraumatic causes of SLAC wrist include calcium pyrophosphate dehydrate deposition disease, reumathoid arthritis, neuropathic diseases, and b2-microglobulin asociated amyloid deposition diseases. On the other hand, SNAC wrist develops following a scahpoid fracture that has progressed to a nonunion. Both of these processes lead to abnormal joint kinematics, since the lunate is unrestrained by the distal scaphoid and, therefore, assumes an extended posture. Over time, this may result in Dorsal intercalated segment instability (DISI) deformity, which invariably progresses to degenerative arthritis of the radioescaphoid articulation, followed by carpal collapse and midcarpal arthritis. The purpose of this retrospective study is to evaluate the functional outcome and pain relief in SLAC/SNAC wrist, after four corner fusion. This study was made in 52 patients of the Hospital de Traumatología y Ortopedia Lomas Verdes, these patients undergone four corner fusion surgery, in a period january 2007 to december 2014. We used Quick Dash Questionary to evaluate functional outcome and pain relief in these patients.

  17. [Non-traumatic osteoarthritis of the wrist: chondrocalcinosis].

    Science.gov (United States)

    Romano, S

    2003-12-01

    Post-traumatic arthritis of the wrist is a common disorder, mostly after scapho lunate or scaphoid injury. Some patients in our experience and in literature have no known trauma, are bilateral and have a mean age much higher than usual post-traumatic cases. Radiological (during an often-extensive medical history) and biological studies of these patients led us to think there is a form of chondrocalcinosis of the wrist, with a four stages evolution, similar to SLAC and SNAC wrist but with often no scapho lunate gap, vertical embedding of the scaphoid in the radius and chalky incrustation of the joint. We called that form of dislocation of the carpus: scaphoid chondrocalcinosis advanced collapse or SCAC wrist. Surgical treatment of advanced cases is described. Scaphoidectomy and resection of triquetrum are performed, associated with hamato-luno-capitate fusion. Other rare forms are described and literature (mostly radiological and rheumatological because these patients are often been mistaken as SLAC wrist) is studied.

  18. In vivo Estimation of Human Forearm and Wrist Dynamic Properties.

    Science.gov (United States)

    Park, Kyungbin; Chang, Pyung-Hun; Kang, Sang

    2016-05-27

    It is important to estimate the 3 degree-of-freedom (DOF) impedance of human forearm and wrist (i.e., forearm prono-supination, and wrist flexion-extension and radial-ulnar deviation) in motor control and in the diagnosis of altered mechanical resistance following stroke. There is, however, a lack of methods to characterize 3 DOF impedance. Thus, we developed a reliable and accurate impedance estimation method, the distal internal model based impedance control (dIMBIC)-based method, to characterize the 3 DOF impedance, including cross-coupled terms between DOFs, for the first time. Its accuracy and reliability were experimentally validated using a robot with substantial nonlinear joint friction. The 3 DOF human forearm and wrist impedance of 8 healthy subjects was reliably characterized, and its linear behavior was verified. Thus, the dIMBIC-based method can provide us with 3 DOF forearm and wrist impedance regardless of nonlinear robot joint friction. It is expected that, with the proposed method, the 3 DOF impedance estimation can promote motor control studies and complement the diagnosis of altered wrist and forearm resistance post stroke by providing objective impedance estimates, including cross-coupled terms.

  19. [Comparative outcome assessment of the wrist joint--mediocarpal partial arthrodesis and total arthrodesis].

    Science.gov (United States)

    Krimmer, H; Wiemer, P; Kalb, K

    2000-11-01

    Total wrist fusion still represents the main treatment for severe posttraumatic disorders of the wrist due to longstanding scaphoid nonunion (SNAC-wrist) or scapholunate dissociation (SLAC-wrist). During the last decade, midcarpal fusion has become more and more popular as it preserves motion. The question, however, remained if the preserved motion is of real benefit from a patient point of view, as complete pain relief is rare following this type of limited wrist fusion. The purpose of this study was to compare the outcome of both treatments with the modified Cooney wrist score and the DASH questionnaire. Between 1993 and 1997, 138 patients with progressive carpal collapse were treated either by midcarpal fusion (97) or total wrist fusion (41). Overall satisfaction was high in both groups with 86% (midcarpal fusion) and 84% (total wrist fusion). The traditional wrist score (70 versus 52 points) and the DASH questionnaire (33 versus 45 points) revealed the superiority of midcarpal fusion. The correlation between the wrist score and the DASH was statistically high (p wrist fusion for treatment of progressive carpal collapse (SLAC- and SNAC-wrist). The DASH represents a sensitive tool to evaluate the outcome of salvage procedures for treatment of disorders of the wrist.

  20. 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.

  1. 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.

  2. 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.

  3. Combined Treatment of Wrist and Trapeziometacarpal Joint Arthritis

    Science.gov (United States)

    Waitzenegger, Thomas; Leclercq, Caroline; Masmejean, Emmanuel; Lenoir, Hubert; Harir, Amir; Coulet, Bertrand; Chammas, Michel

    2015-01-01

    Background Combined thumb basal and wrist joint arthritis (excluding scaphotrapeziotrapezoid arthritis) is rare considering the frequency of arthritis of either joint alone. Combined surgical treatment has never been described in the literature. Furthermore, the scaphoidectomy common to all interventions for Watson stage 2 or 3 wrist arthritis theoretically makes it impossible to perform a trapeziectomy for thumb basal joint arthritis. Question/Purpose The aim of this study was to present and analyze the results of two types of surgical treatment when both wrist and thumb arthritis was present. Materials and Methods Our retrospective series included 11 patients suffering from Eaton Stage III thumb basal joint arthritis and scapholunate advanced collapse (SLAC) II and III-type wrist arthritis. Five patients (group A) underwent trapeziectomy and palliative surgery for their wrist with conservation of the distal pole of the scaphoid (one proximal row carpectomy [PRC] and four four-corner fusions), and six (group B) patients had a trapeziometacarpal arthroplasty either with PRC (two cases) or four-corner arthrodesis (four cases) including total scaphoidectomy. Results The mean follow-up was 57 months. The overall visual analog scale (VAS) score for pain was 1.5 at rest, with no difference between the trapeziectomy and arthroplasty groups. The average Kapandji score was 9.3 (9 in group A and 9.5 in group B). The flexion/extension range of motion for the wrist was 64° following four-corner arthrodesis and 75° following PRC. Only one case of algodystrophy was observed. The radiological analysis revealed no complications. Discussion This study shows that thumb basal joint arthritis and SLAC type wrist arthritis may be treated by combined treatment during the same intervention without any complications. The results of palliative surgery for the wrist, either with trapeziectomy or with a trapeziometacarpal arthroplasty, are comparable. With a trapeziectomy, the

  4. Combined Treatment of Wrist and Trapeziometacarpal Joint Arthritis.

    Science.gov (United States)

    Waitzenegger, Thomas; Leclercq, Caroline; Masmejean, Emmanuel; Lenoir, Hubert; Harir, Amir; Coulet, Bertrand; Chammas, Michel

    2015-11-01

    Background Combined thumb basal and wrist joint arthritis (excluding scaphotrapeziotrapezoid arthritis) is rare considering the frequency of arthritis of either joint alone. Combined surgical treatment has never been described in the literature. Furthermore, the scaphoidectomy common to all interventions for Watson stage 2 or 3 wrist arthritis theoretically makes it impossible to perform a trapeziectomy for thumb basal joint arthritis. Question/Purpose The aim of this study was to present and analyze the results of two types of surgical treatment when both wrist and thumb arthritis was present. Materials and Methods Our retrospective series included 11 patients suffering from Eaton Stage III thumb basal joint arthritis and scapholunate advanced collapse (SLAC) II and III-type wrist arthritis. Five patients (group A) underwent trapeziectomy and palliative surgery for their wrist with conservation of the distal pole of the scaphoid (one proximal row carpectomy [PRC] and four four-corner fusions), and six (group B) patients had a trapeziometacarpal arthroplasty either with PRC (two cases) or four-corner arthrodesis (four cases) including total scaphoidectomy. Results The mean follow-up was 57 months. The overall visual analog scale (VAS) score for pain was 1.5 at rest, with no difference between the trapeziectomy and arthroplasty groups. The average Kapandji score was 9.3 (9 in group A and 9.5 in group B). The flexion/extension range of motion for the wrist was 64° following four-corner arthrodesis and 75° following PRC. Only one case of algodystrophy was observed. The radiological analysis revealed no complications. Discussion This study shows that thumb basal joint arthritis and SLAC type wrist arthritis may be treated by combined treatment during the same intervention without any complications. The results of palliative surgery for the wrist, either with trapeziectomy or with a trapeziometacarpal arthroplasty, are comparable. With a trapeziectomy, the

  5. 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.)

  6. Hand and Wrist Injuries in Boxing and the Martial Arts.

    Science.gov (United States)

    Drury, Benjamin Todd; Lehman, Thomas P; Rayan, Ghazi

    2017-02-01

    Hand and wrist injuries in martial arts are typically a reflection of the combat nature of this discipline. In striking sports, the axial load mechanism of injury is common and causes fractures and dislocations; in grappling sports, sprain injuries and degenerative changes predominate. There is clear evidence to support that hand protection reduces the risk of hand injury. Traditional training in martial arts on proper technique and target selection in striking sports reduces the risk of hand injury, and is an important component of hand and wrist injury prevention.

  7. 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...

  8. 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

  9. Abdominal paracentesis and thoracocentesis.

    Science.gov (United States)

    Lee, Ser Yee; Pormento, James G; Koong, Heng Nung

    2009-04-01

    Abdominal paracentesis and thoracocentesis are common bedside procedures with diagnostic, therapeutic and palliative roles. We describe a useful and familiar a useful and familiar technique with the use of a multiple lumen catheter commonly used for central venous line insertion for drainage of ascites or moderate to large pleural effusions. The use of a multiple lumen catheter allows easier and more rapid aspiration of fluid with a smaller probability of the side holes being blocked as compared to the standard needle or single catheter methods. This is particularly useful in situations where the dedicated commercial kits for thoracocentesis and abdominal paracentesis are not readily available.

  10. [Abdominal actinomycosis with IUD].

    Science.gov (United States)

    Kamprath, S; Merker, A; Kühne-Heid, R; Schneider, A

    1997-01-01

    We report a case of abdominal actinomycosis in a 54 year old woman using an intrauterine device for a period of 8 years. The most important finding was a tuboovarialabscess at the left pelvic side with involvement of the serosa of the jejunum, ileum, sigma, and omentum majus. Intraoperative exploration showed a solid retroperitoneal infiltration between the pelvic side wall and sigma. Another infiltration was found on the left side of the abdominal wall. The diagnosis was confirmed by histopathological examination and the patient was treated by a combination of Aminopenicillin and Metronidazol. After a period of three months we observed a complete regression of the clinical and the MRI findings.

  11. Left shoulder pain in a violinist, related to extensor tendon adhesions in a small scar on the back of the wrist.

    Science.gov (United States)

    Leijnse, J N A L; Rietveld, A B M

    2013-04-01

    A female professional orchestra violin player, age 54, with an 8-year history of severe left shoulder problems, presented with reproducible, acute, incapacitating left shoulder pain when playing the lowest violin string. This complaint was found caused by compensatory left arm positions for unnoticed finger extensor excursion limitations in a well-healed scar bed from two dorsal wrist ganglion operations 11 and 13 years before. Immediately after extensor tendon mobilization in the scar bed, the patient could assume a normal playing position, which was pain free, and could return to orchestral duties without further major shoulder complaints (follow-up of 10 years). The case study presents finger extensor excursion limitations at the wrist as an unusual extra-regional risk factor for a shoulder complaint and analyses the biomechanics linking these limitations to the complaint. The case illustrates the importance of long-term post-operative hand surgery rehabilitation in musicians.

  12. 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.

  13. 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...

  14. Clinical and radiological manifestations of the rheumatoid wrist after the Sauvé-Kapandji procedure.

    Science.gov (United States)

    Momohara, Shigeki; Mamizuka, Kyoko; Yonemoto, Kouichi; Tomatsu, Taisuke; Inoue, Kazuhiko

    2004-01-01

    A retrospective study was performed to investigate the clinical and radiological results of the Sauvé-Kapandji (S-K) procedure for the rheumatoid wrist. One hundred and eight rheumatoid wrists in 98 patients were operated on in our institute from 1992 to 2000, and in 82 wrists we used the S-K procedure. In other cases, synovectomy alone was performed on 16 wrists, and partial and total arthrodeses were performed concurrently on 5 wrists each. Carpal bones and/or radiocarpal joints in which the union could not be assessed radiologically were found in 49 wrists (59.8%) after the S-K procedure, and among them there was definite non-fusion of the carpal bone and radiocarpal joints in 29 wrists (35.4%). However, definite fusion of carpal bones and/or radiocarpal joints was found in 33 wrists (40.2%). The formation of carpal bones and partial radiocarpal fusion with some mobility was detected in some cases. Therefore, the S-K procedure may stabilize the carpus in the rheumatoid wrist to some extent while maintaining a functionally important range of motion and relieving pain. However, it does not stop the disease process and cannot reestablish or maintain carpal height. We concluded that the S-K procedure is the treatment of choice for the rheumatoid wrist, and if the wrist is unstable, as seen with arthritis mutilans, we then perform either radio-lunate partial arthrodesis or total wrist arthrodesis.

  15. 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

  16. 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.

  17. Comparison of regression models for estimation of isometric wrist joint torques using surface electromyography

    Directory of Open Access Journals (Sweden)

    Menon Carlo

    2011-09-01

    Full Text Available Abstract Background Several regression models have been proposed for estimation of isometric joint torque using surface electromyography (SEMG signals. Common issues related to torque estimation models are degradation of model accuracy with passage of time, electrode displacement, and alteration of limb posture. This work compares the performance of the most commonly used regression models under these circumstances, in order to assist researchers with identifying the most appropriate model for a specific biomedical application. Methods Eleven healthy volunteers participated in this study. A custom-built rig, equipped with a torque sensor, was used to measure isometric torque as each volunteer flexed and extended his wrist. SEMG signals from eight forearm muscles, in addition to wrist joint torque data were gathered during the experiment. Additional data were gathered one hour and twenty-four hours following the completion of the first data gathering session, for the purpose of evaluating the effects of passage of time and electrode displacement on accuracy of models. Acquired SEMG signals were filtered, rectified, normalized and then fed to models for training. Results It was shown that mean adjusted coefficient of determination (Ra2 values decrease between 20%-35% for different models after one hour while altering arm posture decreased mean Ra2 values between 64% to 74% for different models. Conclusions Model estimation accuracy drops significantly with passage of time, electrode displacement, and alteration of limb posture. Therefore model retraining is crucial for preserving estimation accuracy. Data resampling can significantly reduce model training time without losing estimation accuracy. Among the models compared, ordinary least squares linear regression model (OLS was shown to have high isometric torque estimation accuracy combined with very short training times.

  18. 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. 

  19. Screening for Abdominal Aortic Aneurysm

    Science.gov (United States)

    Understanding Task Force Recommendations Screening for Abdominal Aortic Aneurysm The U.S. Preventive Services Task Force (Task Force) has issued a final recommendation statement on Screening for Abdominal Aortic Aneurysm. This final ...

  20. Abdominal aortic aneurysm repair - open

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/article/007392.htm Abdominal aortic aneurysm repair - open To use the sharing features on this page, please enable JavaScript. Open abdominal aortic aneurysm repair is surgery to fix a widened part ...

  1. Wear particles and osteolysis in patients with total wrist arthroplasty

    DEFF Research Database (Denmark)

    Boeckstyns, Michel E H; Toxværd, Anders; Bansal, Manjula;

    2014-01-01

    PURPOSE: To determine whether the amount of polyethylene debris in the interphase tissue between prosthesis and bone in patients with total wrist arthroplasty correlated with the degree of periprosthetic osteolysis (PPO); and to investigate the occurrence of metal particles in the periprosthetic...

  2. 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.

  3. New wrist bones of the Malagasy giant subfossil lemurs.

    Science.gov (United States)

    Hamrick, M W; Simons, E L; Jungers, W L

    2000-05-01

    Recently discovered wrist bones of the Malagasy subfossil lemurs Babakotia radofilai, Palaeopropithecus ingens, Mesopropithecus dolichobrachion, and Megaladapis madagascariensis shed new light on the postcranial morphologies and positional behaviors that characterized these extinct primates. Wrist bones of P. ingens resemble those of certain modern hominoids in having a relatively enlarged ulnar head and dorsally extended articular surface on the hamate, features related to a large range of rotation at the inferior radioulnar and midcarpal joints. The scaphoid of P. ingens is also similar to that of the extant tree sloth Choloepus in having an elongate, palmarly directed tubercle forming a deep radial margin of the carpal tunnel for the passage of large digital flexors. In contrast, wrist remains of Megaladapis edwardsi and M. madagascariensis exhibit traits observed in the hands of extant pronograde, arboreal primates; these include a dorsopalmarly expanded pisiform and well-developed "spiral" facet on the hamate. Moreover, Megaladapis spp. and Mesopropithecus dolichobrachion possess bony tubercles (e.g., scaphoid tubercle and hamate hamulus) forming the carpal tunnel that are relatively similar in length to those of modern pronograde lemurs. Babakotia and Mesopropithecus differ from Megaladapis in exhibiting features of the midcarpal joint related to frequent supination and radioulnar deviation of the hand characteristic of animals that use vertical and quadrumanous climbing in their foraging behaviors. Comparative analysis of subfossil lemur wrist morphology complements and expands upon prior inferences based on other regions of the postcranial skeleton, and suggests a considerable degree of locomotor and postural heterogeneity among these recently extinct primates.

  4. 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

  5. Improved orthopedic arm joint

    Science.gov (United States)

    Dane, D. H.

    1971-01-01

    Joint permits smooth and easy movement of disabled arm and is smaller, lighter and less expensive than previous models. Device is interchangeable and may be used on either arm at the shoulder or at the elbow.

  6. Arm Lift (Brachioplasty)

    Science.gov (United States)

    ... sagging. An arm lift might also boost your body image. As you get older, the skin on your upper arms changes — sagging and becoming loose. Significant weight loss also can cause the undersides of your upper arms to droop. While exercise can strengthen and improve muscle tone in the ...

  7. The effect of wrist immobilization on performance of the Jebsen Hand Function Test.

    Science.gov (United States)

    Carlson, J D; Trombly, C A

    1983-03-01

    Eighteen normal subjects participated in a study designed to monitor the effect of wrist motion on the time required to complete manual tasks from the Jebsen Hand Function Test. Activities were performed with the wrist free and with the wrist immobilized by a commercially available splint. The results showed a statistically significant increase in time to do the tasks during immobilization when compared to the free condition. There was great variation in patterns of motion between individuals. Treatment implications include individual consideration of position of wrist immobilization for splinting, proper length and fit of splint designed to immobilize, and the importance of practice in tasks following loss of wrist motion.

  8. 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.

  9. 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.

  10. 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...... of the intestinal sounds from 8 patients with acute abdominal pain and 4 healthy volunteers were presented to 100 physicians. The physicians were asked to characterize the intestinal sounds as normal or pathologic. Fisher's exact test was used for comparison between groups of physicians. Results: Overall, 72......% of the answers with regard to healthy volunteers concluded that the sounds were normal (equalling agreement), whereas 64% of answers with regard to intestinal obstruction concluded that the sounds were pathologic (but agreement was higher due to agreement on wrong diagnosis in one case). Bowel sounds from...

  11. Ruptured abdominal aortic aneurysm.

    Science.gov (United States)

    Sachs, T; Schermerhorn, M

    2010-06-01

    Ruptured abdominal aortic aneurysm (AAA) continues to be one of the most lethal vascular pathologies we encounter. Its management demands prompt and efficient evaluation and repair. Open repair has traditionally been the mainstay of treatment. However, the introduction of endovascular techniques has altered the treatment algorithm for ruptured AAA in most major medical centers. We present recent literature and techniques for ruptured AAA and its surgical management.

  12. 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.

  13. Effect of Wrist Deviation on Median Nerve Cross-Sectional Area at Proximal Carpal Tunnel Level

    Directory of Open Access Journals (Sweden)

    Ping Yeap LOH

    2015-10-01

    Full Text Available Background: Carpal tunnel syndrome (CTS is one of the most common musculoskeletal disorders among computer users. Computer users exhibit various wrist angles while typing. Dynamic changes of wrist angle may cause different degrees of median nerve compression. The objective of this study was thus to investigate the effects of the combination of wrist flexion-extension with wrist deviation on median nerve cross-sectional area (MNCSA.Methods:  Eight right-handed participants were recruited in this study. Both wrists were examined by sonographic ultrasound (US at the proximal carpal tunnel level in the transverse plane. A total of nine wrist positions were examined, including wrist neutral (WN, wrist flexion (WF30°, and wrist extension (WE30°, together with three wrist deviation conditions, namely, without radial deviation (RD and ulnar deviation (UD, with maximal RD and with maximal UD. MNCSA was measured by tracing method with ImageJ.Results: Paired t-test showed a significant difference of WN MNCSA between the dominant hand (7.93 ± 0.63 mm2 and the non-dominant hand (6.98 ± 0.42 mm2 (P<0.001. Two-way repeated-measures ANOVA (handedness as an independent factor showed that WF30° and WE30° caused significant differences of MNCSA when compared with WN (P<0.001. However, wrist RD/UD did not have a significant interaction with the changes of MNCSA in WN, WF and WE positions.Conclusion: The results indicate a significant reduction of MNCSA when WN changed to WF and WE. Wrist RD and UD did not cause significant changes of MNCSA at different wrist positions. Keywords: Median nerve, Ultrasound, Wrist active holding, Nerve deformation

  14. A virtual reality system for arm and hand rehabilitation

    Science.gov (United States)

    Luo, Zhiqiang; Lim, Chee Kian; Chen, I.-Ming; Yeo, Song Huat

    2011-03-01

    This paper presents a virtual reality (VR) system for upper limb rehabilitation. The system incorporates two motion track components, the Arm Suit and the Smart Glove which are composed of a range of the optical linear encoders (OLE) and the inertial measurement units (IMU), and two interactive practice applications designed for driving users to perform the required functional and non-functional motor recovery tasks. We describe the technique details about the two motion track components and the rational to design two practice applications. The experiment results show that, compared with the marker-based tracking system, the Arm Suit can accurately track the elbow and wrist positions. The repeatability of the Smart Glove on measuring the five fingers' movement can be satisfied. Given the low cost, high accuracy and easy installation, the system thus promises to be a valuable complement to conventional therapeutic programs offered in rehabilitation clinics and at home.

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

    OpenAIRE

    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 wrists is limited. Methods In this study, eight transradial amputees using a myoelectric prosthesis tested two prosthesis wrists with flexion/extension capabilities, the Flex-wrist (Otto Bock) and Mult...

  16. 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.

  17. 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...

  18. Arthroscopic Resection Arthroplasty of the Radial Column for SLAC Wrist

    OpenAIRE

    Cobb, Tyson K.; Walden, Anna L.; Wilt, Jessica M.

    2014-01-01

    Background Symptomatic advanced scapholunate advanced collapse (SLAC) wrists are typically treated with extensive open procedures, including but not limited to scaphoidectomy plus four-corner fusion (4CF) and proximal row carpectomy (PRC). Although a minimally invasive arthroscopic option would be desirable, no convincing reports exist in the literature. The purpose of this paper is to describe a new surgical technique and outcomes on 14 patients who underwent arthroscopic resection arthropla...

  19. Abdominal obesity has the highest impact on metabolic profile in an overweight African population

    DEFF Research Database (Denmark)

    Handlos, L. N.; Witte, D. R.; Mwaniki, D. L.

    2012-01-01

    ), abdominal subcutaneous adipose tissue, arm fat area and arm muscle area) separately as independent variables were carried out. Results: Mean age of study participants was 42.1 years (SD = 9.6) and 26.5% of the participants were men. The median BMI was 28.6 kg/m2 (Q1 = 26.3; Q3 = 31.3). Of the six...

  20. 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.

  1. Conceptual design main progress of EAST Articulated Maintenance Arm (EAMA) system

    Energy Technology Data Exchange (ETDEWEB)

    Shi, Shanshuang, E-mail: shiss@ipp.ac.cn [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 (China); Laboratory of Intelligent Machines, Lappeenranta University of Technology (Finland); Song, Yuntao; Cheng, Yong [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 (China); Villedieu, Eric; Bruno, Vincent [CEA-IRFM, F-13108 Saint-Paul-Lez-Durance (France); Feng, Hansheng [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 (China); Wu, Huapeng [Laboratory of Intelligent Machines, Lappeenranta University of Technology (Finland); Wang, Peng [State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000 (China); Hao, Zhiwei; Li, Yang; Wang, Kun; Pan, Hongtao [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 (China)

    2016-03-15

    Highlights: • EAST Articulated Maintenance Arm (EAMA) system is being collaboratively developed by ASIPP and CEA-IRFM. • Conceptual design for a 3-DOF wrist end effector with gripper has been finished. • Kinematic design can reach 90% of the workspace inside EAST tokamak vessel. • A prototype of EAMA arm segment has been built to validate the design. - Abstract: EAST articulated maintenance arm (EAMA) system is being collaboratively developed by ASIPP and CEA-IRFM for the purpose of remote inspection and simple maintenance operations in EAST vacuum vessel during physical experiments without breaking the ultra-high vacuum condition. The EAMA system design is based on a similar articulated inspection arm robot successfully demonstrated in Tore Supra in 2008. In order to better meet EAST configurations and maintenance requirements, optimized mechanisms and dimensions are considered for EAMA robot as upgrades. Besides, the segmented arm is equipped with a 3-DOF wrist end effector and gripper for gripping operation as well as inspection. Some calculations and simulations on statics, kinematics and workspace of EAMA have been presented to validate the feasibility. This paper introduces the overall design of the EAMA robot and presents implementation progress.

  2. 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.)

  3. Development of wrist rehabilitation robot and interface system.

    Science.gov (United States)

    Yamamoto, Ikuo; Matsui, Miki; Inagawa, Naohiro; Hachisuka, Kenji; Wada, Futoshi; Hachisuka, Akiko; Saeki, Satoru

    2015-01-01

    The authors have developed a practical wrist rehabilitation robot for hemiplegic patients. It consists of a mechanical rotation unit, sensor, grip, and computer system. A myoelectric sensor is used to monitor the extensor carpi radialis longus/brevis muscle and flexor carpi radialis muscle activity during training. The training robot can provoke training through myoelectric sensors, a biological signal detector and processor in advance, so that patients can undergo effective training of extention and flexion in an excited condition. In addition, both-wrist system has been developed for mirror effect training, which is the most effective function of the system, so that autonomous training using both wrists is possible. Furthermore, a user-friendly screen interface with easily recognizable touch panels has been developed to give effective training for patients. The developed robot is small size and easy to carry. The developed aspiring interface system is effective to motivate the training of patients. The effectiveness of the robot system has been verified in hospital trails.

  4. 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.

  5. 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.

  6. [Differential diagnosis of abdominal pain].

    Science.gov (United States)

    Frei, Pascal

    2015-09-02

    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.

  7. 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....

  8. Lower Abdominal Pain.

    Science.gov (United States)

    Carlberg, David J; Lee, Stephen D; Dubin, Jeffrey S

    2016-05-01

    Although most frequently presenting with lower abdominal pain, appendicitis, colitis, and diverticulitis can cause pain throughout the abdomen and can cause peritoneal and retroperitoneal symptoms. Evaluation and management of lower intestinal disease requires a nuanced approach by the emergency physician, sometimes requiring computed tomography, ultrasonography, MRI, layered imaging, shared decision making, serial examination, and/or close follow-up. Once a presumed or confirmed diagnosis is made, appropriate treatment is initiated, and may include surgery, antibiotics, and/or steroids. Appendicitis patients should be admitted. Diverticulitis and inflammatory bowel disease can frequently be managed on an outpatient basis, but may require admission and surgical consultation.

  9. 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.

  10. Abdominal perfusion computed tomography.

    Science.gov (United States)

    Ogul, Hayri; Bayraktutan, Ummugulsum; Kizrak, Yesim; Pirimoglu, Berhan; Yuceler, Zeynep; Sagsoz, M Erdem; Yilmaz, Omer; Aydinli, Bulent; Ozturk, Gurkan; Kantarci, Mecit

    2013-02-01

    The purpose of this article is to provide an up to date review on the spectrum of applications of perfusion computed tomography (CT) in the abdomen. New imaging techniques have been developed with the objective of obtaining a structural and functional analysis of different organs. Recently, perfusion CT has aroused the interest of many researchers who are studying the applicability of imaging modalities in the evaluation of abdominal organs and diseases. Per-fusion CT enables fast, non-invasive imaging of the tumor vascular physiology. Moreover, it can act as an in vivo biomarker of tumor-related angiogenesis.

  11. Abdominal pregnancy- a case report.

    Science.gov (United States)

    Okafor, Ii; Ude, Ac; Aderibigbe, Aso; Amu, Oc; Udeh, Pe; Obianyo, Nen; Ani, Coc

    2011-01-01

    A case of abdominal pregnancy in a 39 year old female gravida 4, para 0(+3) is presented. Ultrasonography revealed a viable abdominal pregnancy at 15 weeks gestational age. She was initially managed conservatively. Surgical intervention became necessary at 20 weeks gestational age following Ultrasound detection of foetal demise. The maternal outcome was favourable. This case is presented to highlight the dilemma associated with diagnosis and management of abdominal pregnancy with a review of literature.

  12. ESCAPS study protocol: a feasibility randomised controlled trial of ‘Early electrical stimulation to the wrist extensors and wrist flexors to prevent the post-stroke complications of pain and contractures in the paretic arm’

    Science.gov (United States)

    Fletcher-Smith, Joanna C; Walker, Dawn-Marie; Sprigg, Nikola; James, Marilyn; Walker, Marion F; Allatt, Kate; Mehta, Rajnikant; Pandyan, Anand D

    2016-01-01

    Introduction Approximately 70% of patients with stroke experience impaired arm function, which is persistent and disabling for an estimated 40%. Loss of function reduces independence in daily activities and impacts on quality of life. Muscles in those who do not recover functional movement in the stroke affected arm are at risk of atrophy and contractures, which can be established as early as 6 weeks following stroke. Pain is also common. This study aims to evaluate the feasibility of a randomised controlled trial to test the efficacy and cost-effectiveness of delivering early intensive electrical stimulation (ES) to prevent post-stroke complications in the paretic upper limb. Methods and analysis This is a feasibility randomised controlled trial (n=40) with embedded qualitative studies (patient/carer interviews and therapist focus groups) and feasibility economic evaluation. Patients will be recruited from the Stroke Unit at the Nottingham University Hospitals National Health Service (NHS) Trust within 72 h after stroke. Participants will be randomised to receive usual care or usual care and early ES to the wrist flexors and extensors for 30 min twice a day, 5 days a week for 3 months. The initial treatment(s) will be delivered by an occupational therapist or physiotherapist who will then train the patient and/or their nominated carer to self-manage subsequent treatments. Ethics and dissemination This study has been granted ethical approval by the National Research Ethics Service, East Midlands Nottingham1 Research Ethics Committee (ref: 15/EM/0006). To our knowledge, this is the first study of its kind of the early application (within 72 h post-stroke) of ES to both the wrist extensors and wrist flexors of stroke survivors with upper limb impairment. The results will inform the design of a definitive randomised controlled trial. Dissemination will include 2 peer-reviewed journal publications and presentations at national conferences. Trial

  13. 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.)

  14. Correlation between elite male Iranian gymnast’s wrist injuries and their anthropometric characteristics

    OpenAIRE

    Ghasempour, Hadi; Rajabi, Reza; ALIZADEH, Mohammad Hossein; Nikro, Hossein

    2014-01-01

    Background: In gymnastics, wrists are under considerable force that causes various injuries. The influences of various risk factors have not been studied sufficiently to date to reduce the wrist injuries of gymnasts. The aim of this research was to determine the relationship between anthropometric characteristics and the wrist injuries of elite male gymnasts who took part in the Iranian Premier League and Division One in 2012. Methods: This was a cross-sectional correlation study concerning t...

  15. Chronic transscaphoid, transcapitate perilunate fracture dislocation of the wrist: Fenton's syndrome.

    Science.gov (United States)

    Marcuzzi, A; Ozben, H; Russomando, A; Petit, A

    2013-04-01

    The authors report about chronic Fenton's syndrome. This rare injury of the wrist is characterized by scapho-capitate fracture accompanied by 180° rotation of the head of capitate and associated perilunate dislocation. Two patients suffering from chronic Fenton's syndrome were treated with pyrocarbon capitate resurfacing prosthesis. Patients were evaluated according to the wrist range of motion, Mayo modified wrist and DASH scores. In conclusion, prosthetic surgery may achieve satisfactory results for this rare and diagnostically challenging syndrome.

  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. The influence of wrist posture on the time and frequency EMG signal measures of forearm muscles.

    Science.gov (United States)

    Roman-Liu, Danuta; Bartuzi, Paweł

    2013-03-01

    This study investigates how altering wrist posture influences the relationship between the time and frequency measures of the electromyography (EMG) signal of extensor digitorum communis (EDC) and flexor carpi ulnaris (FCU). Thirteen participants exerted handgrip force related to maximum voluntary contraction (MVC) in four tests: 20%MVC and 50%MVC in neutral wrist posture and 20%MVC in full wrist flexion and extension. EMG measurements from EDC and FCU were used to calculate normalized values of amplitude (nRMS) and mean and median frequency of the power spectrum (nMPF, nMF). During muscle shortening (wrist flexion for FCU and wrist extension for EDC) nRMS was approximately twofold higher than in neutral posture for FCU and fourfold for EDC. All measures obtained at 20%MVC in neutral posture were significantly different from 20%MVC in wrist flexion for FCU and 20%MVC in wrist extension for EDC (pMVC and 20%MVC at neutral posture (nRMS) were significant for both muscles, although in nMPF and nMF for EDC only. Muscle shortening changed the pattern of statistical significance when the time and frequency domain measures were compared, whereas muscle lengthening did not. It can be concluded that muscle shortening caused by altering wrist posture influences the relationship between the time and frequency measures in both muscles. This suggests that in studies using EMG in different wrist postures, changes in the relationship between the time and the frequency measures should be considered.

  18. 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.

  19. Subtotal versus total abdominal hysterectomy

    DEFF Research Database (Denmark)

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

    2015-01-01

    a multiple imputation analysis, this difference disappeared (relative risk, 1.36; 95% confidence interval, 0.86-2.13; P = .19). No differences were seen in any of the secondary outcomes. CONCLUSION: Subtotal abdominal hysterectomy was not superior to total abdominal hysterectomy on any outcomes. More women...

  20. Abdominal Complications after Severe Burns

    Science.gov (United States)

    2009-05-01

    abdominal compartment syndrome, schemic bowel, biliary disease , peptic ulcer disease and astritis requiring laparotomy, small bowel obstruction, rimary fungal...complications in- luded trauma exploratory laparotomy, abdominal com- artment syndrome, ischemic bowel, biliary disease , peptic lcer disease and gastritis, large...because it was almost uniformly ssociated with serious lethal burns. This was in the period efore effective gastric acid control, explaining the high

  1. Abdominal aortic aneurysms

    DEFF Research Database (Denmark)

    Lindholt, Jes Sanddal

    2010-01-01

    Although the number of elective operations for abdominal aortic aneurysms (AAA) is increasing, the sex- and age-standardised mortality rate of AAAs continues to rise, especially among men aged 65 years or more. The lethality of ruptured AAA continues to be 80-95%, compared with 5-7% by elective....... The acceptance rate was 77%, and 95% accept control scans. Furthermore, persons at the highest risk of having an AAA attend screening more frequently. We found that 97% of the interval cases developed from aortas that initially measured 2.5-2.9 cm - i.e. approx. only 5% attenders need re-screening at 5-year...... methods for measuring the degree of wall calcification must be developed and validated....

  2. Ulnar-sided wrist pain after four-corner fusion in a previously-asymptomatic ulnar positive wrist: a case report.

    Science.gov (United States)

    Gong, Hyun Sik; Jeon, Su Ha; Baek, Goo Hyun

    2009-01-01

    Scaphoid excision and four-corner fusion is one of the treatment choices for patients who have stage II or III SLAC (scapholunate advanced collapse)/SNAC (scaphoid non-union advanced collapse) wrist arthritis. We report a case of ulnar-sided wrist pain which occurred after four-corner fusion for stage II SNAC wrist with a previously-asymptomatic ulnar positive variance, and was successfully treated by ulnar shortening osteotomy. This case highlights a possible coincidental pathology of the ulnocarpal joint in the setting of post-traumatic radiocarpal arthrosis.

  3. 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

  4. Abdominal migraine in the differential diagnosis of acute abdominal pain.

    Science.gov (United States)

    Cervellin, Gianfranco; Lippi, Giuseppe

    2015-06-01

    Although traditionally regarded as a specific pediatric disease, abdominal migraine may also be observed in adults. Unfortunately, however, this condition is frequently overlooked in the differential diagnosis of abdominal pain in the emergency department (ED). A 30-year-old woman presented to our ED complaining of abdominal pain and vomiting, lasting for 12 hours. The pain was periumbilical, continuous, and not associated with fever or diarrhea. The physical examination and the results of conventional blood tests were normal. The patient was treated with intravenous ketoprofen, metoclopramide, and ranitidine, obtaining a prompt relief of symptoms. She had a history of similar episodes in the last 15 years, with several ED visits, blood test examinations, ultrasonography of the abdomen, and upper gastrointestinal endoscopies. Celiac disease, porphyry, sickle cell disease, and inflammatory bowel disease were all excluded. In July 2012, she became pregnant, and she delivered a healthy baby on April 2013. Until November 2014, she has remained asymptomatic. Based on the clinical characteristics of the abdominal pain episodes, the exclusion of any alternative diagnosis, and the relief of symptoms during and after pregnancy, a final diagnosis of abdominal migraine could be established. A skilled emergency physician should always consider abdominal migraine in the differential diagnosis of patients admitted to the ED with abdominal pain, especially when the attacks are recurrent and no alternative diagnosis can be clearly established.

  5. Compressive neuropathies related to ganglions of the wrist and hand.

    Science.gov (United States)

    Jayakumar, Prakash; Jayaram, Vijay; Nairn, David S

    2014-01-01

    Ganglions of the wrist and hand causing compressive neuropathies are rare clinical entities. Compression of the ulnar and median nerves in their respective fibro-osseous tunnels lead to characteristic patterns of motor and/or sensory deficits, which are directly related to the location of the lesion. We present a unique case of a "dumbbell" shaped ganglion invading both Guyon's canal and the carpal tunnel causing a dual compressive neuropathy of the ulnar and median nerve. We discuss the patho-anatomy, clinical assessment, investigation and surgical treatment of this condition.

  6. Entrance surface dose according to dose calculation: Head and wrist

    Energy Technology Data Exchange (ETDEWEB)

    Sung, Ho Jin [Dept. Radiology, Chonnam National University Hospital, Gwangju (Korea, Republic of); Han, Jae Bok; Song, Jong Nam; Choi, Nam Gil [Dept. of Radiological Science, Dongshin University, Naju (Korea, Republic of)

    2016-09-15

    This study were compared with the direct measurement and indirect dose methods through various dose calculation in head and wrist. And, the modified equation was proposed considering equipment type, setting conditions, tube voltage, inherent filter, added filter and its accompanied back scatter factor. As a result, it decreased the error of the direct measurement than the existing dose calculation. Accordingly, diagnostic radiography patient dose comparison would become easier and radiographic exposure control and evaluation will become more efficient. The study findings are expected to be useful in patients' effective dose rate evaluation and dose reduction.

  7. VACUUM THERAPY VERSUS ABDOMINAL EXERCISES ON ABDOMINAL OBESITY

    Directory of Open Access Journals (Sweden)

    Nevein Mohammed Mohammed Gharib

    2016-06-01

    Full Text Available Background: Obesity is a medical condition that may adversely affect wellbeing and leading to increased incidence of many health problems. Abdominal obesity tends to be associated with weight gain and obesity and it is significantly connected with different disorders like coronary heart disease and type II diabetes mellitus.This study was conducted to investigate the efficacy of vacuum therapy as compared to abdominal exercises on abdominal obesity in overweight and obese women. Methods: Thirtyoverweight and obese women participated in this study with body mass index > 25 kg/m2andwaist circumference ≥ 85 cm. Their ages ranged from 28 - 40 years old.The subjects were excluded if they have diabetes, abdominal infection diseases or any physical limitation restricting exercise ability. They were randomly allocated into two equal groups; group I and group II. Group I received vacuum therapy sessions (by the use of LPG device in addition to aerobic exercise training. Group II received abdominal exercises in addition to the same aerobic exercisesgiven to group I. This study was extended for successive 8 weeks (3 sessions/ week. All subjects were assessed for thickness ofnthe abdominal skin fold, waist circumference and body mass index. Results: The results of this study showeda significant difference between group I and group II post-interventionas regarding to the mean values of waist circumference and abdominal skin fold thickness (p<0.05. Conclusion: It can be concluded that aerobic exercises combined with vacuum therapy (for three sessions/week for successive 8 weeks have a positive effect on women with abdominal obesity in terms of reducing waist circumference and abdominal skin fold thickness.

  8. 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.

  9. 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.

  10. Arms Trafficking and Colombia

    Science.gov (United States)

    2003-01-01

    Brasil , February 20, 2001. 20 Arms Trafficking and Colombia chased, when and how they were transferred to the guerrillas or paramilitaries, or through...Mercado Blanco De Armas,” 1999, p. 44. 31Franco, Ilimar, “Pf to Block Farc Supply Routes in Amazon,” Jornal do Brasil , August 20, 1999. 26 Arms...Forces Mobilize in Response to Farc,” Sao Paulo Veja, November 10, 1999. 43“Arms Trafficking to Colombia Increases,” El Comercio , August 23, 2000

  11. 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.

  12. 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

  13. 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.

  14. Arm CT scan

    Science.gov (United States)

    ... scanners can perform the exam without stopping.) A computer creates separate images of the arm area, called ... M. is also a founding member of Hi-Ethics and subscribes to the principles of the Health ...

  15. 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.

  16. 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.

  17. Worldwide Report, Arms Control

    Science.gov (United States)

    2007-11-02

    world war, a nuclear inferno , for over 40 years. A sober assessment of the situation in world politics was conducted at the meet- ing of the...there is success in stopping the arms race, or those forces accelerating the arms race and driving humanity to the edge of a nuclear inferno will gain...dialogue with all forces fighting against a nuclear inferno , affirmed by the Warsaw Pact countries, is being seen more and more as the only practicable

  18. Correlation between elite male Iranian gymnast’s wrist injuries and their anthropometric characteristics

    Science.gov (United States)

    Ghasempour, Hadi; Rajabi, Reza; Alizadeh, Mohammad Hossein; Nikro, Hossein

    2014-01-01

    Background: In gymnastics, wrists are under considerable force that causes various injuries. The influences of various risk factors have not been studied sufficiently to date to reduce the wrist injuries of gymnasts. The aim of this research was to determine the relationship between anthropometric characteristics and the wrist injuries of elite male gymnasts who took part in the Iranian Premier League and Division One in 2012. Methods: This was a cross-sectional correlation study concerning the injuries of 43 elite male gymnasts. The extent of their wrist injuries was determined by a questionnaire and interviews. Also, their anthropometric characteristics were collected according to the criteria established by the International Society for the Advancement of Kinanthropometry. Event tree analysis and the Spearman rho correlation coefficient were used for statistical analysis. Results: Among the gymnasts, 53.5% experienced wrist injuries over the past year, and the rate of wrist injuries was three per gymnast for one year. The incidents of skin and muscular injuries were the most prevalent type of injuries followed by Injuries to ligaments and bones respectively. Body weight was the only anthromopetric characteristic of the participants that was found to have a significant positive relationship with wrist injuries (P < 0.05). Conclusion: Gymnasts and their coaches should pay special attention to gymnasts’ weight as an intrinsic risk factor and take the required actions to prevent wrist injuries. PMID:25763171

  19. 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...

  20. 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...

  1. 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…

  2. 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...

  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. 888.3760 Section 888.3760 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN... 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. 888.3770 Section 888.3770 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN... 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. 888.3750 Section 888.3750 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN... lunate polymer prosthesis. (a) Identification. A wrist joint carpal lunate prosthesis is a...

  6. The effect of handle angle on MAWL, wrist posture, RPE, and heart rate.

    Science.gov (United States)

    Wang, M J; Chung, H C; Chen, H C

    2000-01-01

    In manual material handling tasks, the handle serves as the interface between the human operator and the box (the materials). Handle angle design can affect both wrist posture and lifting ability. This study was designed to evaluate the effect of handle angle on maximal acceptable weight of lifting (MAWL), perceived whole-body exertion, whole-body workload, wrist posture, and perceived wrist exertion. The results indicate that handle angle had a significant effect on wrist posture and wrist rating of perceived exertion (RPE). A box with a 0 degrees handle angle induced the greatest ulnar deviation and the highest wrist RPE. A 75 degrees handle angle induced the greatest radial deviation and a relatively high wrist RPE. A 30 degrees handle angle resulted in the greatest MAWL and the lowest level of wrist RPE. Overall, these findings suggest that 30 degrees and 45 degrees handle angles can provide favorable coupling conditions for the cutout-type handhold container handle. Actual or practical applications include the ergonomic design of container handles for manual material handling tasks industry.

  7. Reproducibility of radiographic classification of scapholunate advanced collapse (SLAC) and scaphoid nonunion advanced collapse (SNAC) wrist.

    Science.gov (United States)

    Vishwanathan, K; Hearnden, A; Talwalkar, S; Hayton, M; Murali, S R; Trail, I A

    2013-09-01

    The aim of this study was to measure inter- and intra-observer agreement on the radiographic classification of scapholunate advanced collapse (SLAC) and scaphoid nonunion advanced collapse (SNAC) wrist. Radiographs of 41 patients with SLAC wrist and 47 patients with SNAC wrist were graded on two separate occasions by four orthopaedic consultants specializing in hand and wrist surgery. Inter-observer agreement was evaluated using the multi-rater kappa value. Landis and Koch criteria were used to assess the level of agreement. Intra-observer agreement was tested by re-grading the radiographs after an interval of 2 to 4 weeks and calculating the weighted kappa value. For SLAC wrist, the inter-observer agreement was moderate (kappa value = 0.59) and intra-observer agreement substantial (kappa value = 0.65). For SNAC wrist, the inter-observer agreement was slight (kappa value = 0.20) and intra-observer agreement was fair (kappa value = 0.29). Radiographic classification of SLAC wrist has moderate reliability and reproducibility, whereas classification of SNAC wrist has limited reliability.

  8. 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.

  9. 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

    movements, that pressure is suited to sensing wrist and forearm rotations, and their combination is significantly more accurate for a range of gestures than either technique alone. The technique is well suited to existing wearable device forms such as smart watches that are already mounted on the wrist....

  10. 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.

  11. 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.

  12. 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.

  13. 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.

  14. Acute ulnar neuropathy at the wrist: a case report and review of the literature.

    Science.gov (United States)

    Erkin, Gülten; Uysal, Hilmi; Keleş, Işik; Aybay, Canan; Ozel, Sumru

    2006-12-01

    Acute ulnar neuropathy at the wrist is an extremely uncommon condition, at times requiring a high index of suspicion for the diagnosis. Clinical presentations of ulnar nerve lesions at the wrist and hand show variations due to the complex anatomic course of the nerve in distal sites. We report a case of acute ulnar neuropathy at the wrist caused by a ganglion in Guyon's canal, being initially misinterpreted as flexor tenosynovitis. The accurate diagnosis of selective distal motor neuropathy of ulnar nerve was made electrophysiologically. Magnetic resonance imaging revealed a well defined soft tissue mass consistent with a ganglion, compressing the ulnar nerve in Guyon's canal. Entrapment neuropathies are one of the common conditions handled by physiatrists. Ulnar nerve lesions at the wrist should be kept in mind in the differential diagnosis of patients with wrist or hand pain. Magnetic resonance imaging is a useful method in the anatomical evaluation of acute focal neuropathies.

  15. 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.

  16. 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.

  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. Children's (Pediatric) Abdominal Ultrasound Imaging

    Medline Plus

    Full Text Available ... valuable for evaluating abdominal, pelvic or scrotal pain in children. Preparation will depend on the type of ... examinations do not use ionizing radiation (as used in x-rays ), thus there is no radiation exposure ...

  19. Children's (Pediatric) Abdominal Ultrasound Imaging

    Medline Plus

    Full Text Available ... children. Except for traumatic injury, appendicitis is the most common reason for emergency abdominal surgery. Ultrasound imaging ... of page How is the procedure performed? For most ultrasound exams, you will be positioned lying face- ...

  20. Children's (Pediatric) Abdominal Ultrasound Imaging

    Medline Plus

    Full Text Available ... of page What are some common uses of the procedure? Abdominal ultrasound imaging is performed to evaluate ... for ultrasound examinations. top of page What does the equipment look like? Ultrasound scanners consist of a ...

  1. Requesting wrist radiographs in emergency department triage: developing a training program and diagnostic algorithm.

    Science.gov (United States)

    Streppa, Joanna; Schneidman, Valerie; Biron, Alain D

    2014-01-01

    Crowding is extremely problematic in Canada, as the emergency department (ED) utilization is considerably higher than in any other country. Consequently, an increase has been noted in waiting times for patients who present with injuries of lesser acuity such as wrist injuries. Wrist fractures are the most common broken bone in patients younger than 65 years. Many nurses employed within EDs are requesting wrist radiographs for patients who present with wrist complaints as a norm within their working practice. Significant potential advantages can ensue if EDs adopt a triage nurse-requested radiographic protocol; patients can benefit from a significant time-saving of 36% in ED length of stay (M. Lindley-Jones & B. J Finlayson, 2000)— when nurses initiated radiographs in triage. In addition, the literature suggests that increased rates of patient and staff satisfaction may be achieved, without compromising quality of radiographic request or quality of service (W. Parris,S. McCarthy, A. M. Kelly, & S. Richardson, 1997). Studies have shown that nurses are capable of requesting appropriate radiographs on the basis of a preset protocol. As there are no standardized set of rules for assessing patients, presenting with suspected wrist fractures, a training program as well as a diagnostic algorithm was developed to prepare emergency nurses to appropriately request wrist radiographs. The triage nurse-specific training program includes the following topics: wrist anatomy and physiology, commonly occurring wrist injuries, mechanisms of injury, physical assessment techniques, and types of radiographic images required. The triage nurse algorithm includes the clinical decision-making process. Providing triage nurses with up-to-date evidence-based educational material not only allowed triage nurses to independently assess and request wrist radiographs for patients with potential wrist fractures but also strengthening the link between competent nursing care and better patient

  2. 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

  3. 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.

  4. Common abdominal emergencies in children.

    Science.gov (United States)

    D'Agostino, James

    2002-02-01

    Because young children often present to EDs with abdominal complaints, emergency physicians must have a high index of suspicion for the common abdominal emergencies that have serious sequelae. At the same time, they must realize that less serious causes of abdominal symptoms (e.g., constipation or gastroenteritis) are also seen. A gentle yet thorough and complete history and physical examination are the most important diagnostic tools for the emergency physician. Repeated examinations and observation are useful tools. Physicians should listen carefully to parents and their children, respect their concerns, and honor their complaints. Ancillary tests are inconsistent in their value in assessing these complaints. Abdominal radiographs can be normal in children with intussusception and even malrotation and early volvulus. Unlike the classic symptoms seen in adults, young children can display only lethargy or poor feeding in cases of appendicitis or can appear happy and playful between paroxysmal bouts of intussusception. The emergency physician therefore, must maintain a high index of suspicion for serious pathology in pediatric patients with abdominal complaints. Eventually, all significant abdominal emergencies reveal their true nature, and if one can be patient with the child and repeat the examinations when the child is quiet, one will be rewarded with the correct diagnosis.

  5. 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 sli...

  6. Special aspects of wrist arthritis management for SLAC and SNAC wrists using midcarpal arthrodesis: results of bilateral operations and conversion to total arthrodesis.

    Science.gov (United States)

    Gohritz, Andreas; Gohla, Thomas; Stutz, Nicolas; Moser, Veith; Koch, Hilmar; Krimmer, Hermann; Lanz, Ulrich

    2005-01-01

    Although midcarpal wrist arthrodesis is recognized as a standard procedure to treat scapholuate advanced collapse (SLAC) and scaphoid nonunion advanced collapse (SNAC) of the wrist, little has been reported about patients with bilateral involvement and the number, cause, and results of failed cases requiring conversion to total wrist arthrodesis. This study investigated the results of 20 patients with bilateral procedures and of 22 patients who underwent total wrist fusion after failed midcarpal arthrodesis out of an overall group of 907 patients treated by this method during a 12-year period. Of these, 16 bilateral and 20 converted cases were reexamined after an average of 48 months and 42 months, respectively. Patients after bilateral midcarpal arthrodesis experienced a pain reduction by an average of 54% of the preoperative pain values at rest and by 56% at stress on the visual analog scale (scale range: 0 to 100) and from intolerable (3.7) to pain only during stress (1.9) on the verbal scale (scale range: I to 4). A mean arc of wrist extension and flexion of 53 degrees on the right and 49 of the left wrist was preserved. The mean DASH score was 45 points and 70% of the patients felt impaired only during certain activities. Total arthrodesis reduced pain in 18 of 20 reexamined wrists by 67% of the previous values after the failed partial arthrodesis at rest and by 46% at stress on the visual analog scale andfrom intolerable pain (3.7) to pain only during stress (2.1) on the verbal scale. Seven of the 20 reexamined patients noted complete pain relief at rest and two also under stress conditions. The DASH score averaged 39 points. A mean Krimmer score of 46 points and a mean Buck-Gramcko and Lohman evaluation of 6 points represented a satisfactory result. Grip strength of the operated hand averaged 53% of the opposite side. Subjectively, 30% felt impaired only during certain activities, 55%felt considerably and 15% strongly limited in daily life. However, all but

  7. 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.

  8. 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.

  9. 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.

  10. Arm trajectories and writing strategy in healthy children

    Directory of Open Access Journals (Sweden)

    Chiappedi Matteo

    2012-11-01

    Full Text Available Abstract Background Evaluation of elementary writing skills in children is usually obtained with high resolution (and high cost techniques or with low resolution pen-and-paper tests. In this observational study we tested a quantitative method to obtain normative data to describe arm movement during a writing precursor gesture. Methods We recruited 226 healthy children (mean age 9,1 years [range: 6.3 – 11.4 years], attending primary schools belonging to the “Istituto Comprensivo” of Rivanazzano Terme (Pavia. We asked to drive a cursor through a polygonal path (labyrinth projected in front of them using a wireless mouse. Dartfish™ video analysis software was used to elaborate images and Excel™, MedCalc™ and Statistica 7™ to analyze values of shoulder, elbow and wrist ranges of motion, arm trajectories, execution times and gesture accuracy. Results Differences seen in motor strategies, when divided according to attended class, suggest a proximal-distal maturation of motor control. Obtained values were not significantly correlated with variables such as gender, ethnicity or cognitive functioning. Conclusions This type of approach to a study of arm movement during childhood represents a valid alternative to other tests, considering that it can differentiate children who perform similarly in the VMI test and is non-invasive, low-cost and easily reproducible.

  11. Three-corner wrist fusion using memory staples.

    Science.gov (United States)

    van Riet, Roger P; Bain, Gregory I

    2006-12-01

    Scapholunate dissociation with advanced collapse (SLAC), scaphoid nonunion advanced collapse (SNAC), and lunotriquetral advanced collapse (LTAC) of the carpus are challenging problems. Various treatment options have been described. We describe a technique of 3-corner wrist fusion, using memory staples. The scaphoid and triquetrum are resected, and the capitate is fused to the lunate. Articular cartilage is removed from the capitolunate joint, and the bones are shaped to conforming surfaces. Bone graft from the resected triquetrum and scaphoid is used to increase fusion rate and a dynamic compressive fixation force is applied due to the unique properties of the memory staples. The main advantages of this procedure include the following: retained anatomical articulation between the lunate and the lunate fossa on the radius, improved ulnar deviation due to the resection of the triquetrum, and an excellent fusion rate between the lunate and capitate due to the dynamic fixation, the conforming surfaces, and the use of autologous bone graft.

  12. 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 nerve displacement vector between finger flexion, wrist flexion with finger extension and wrist ulnar deviation with finger extension (all p's nerve motion in wrist flexion with finger extension (2.36 ± 0.79 normalized units [NU]), wrist flexion with finger flexion (2.46 ± 0.84 NU) and wrist ulnar deviation with finger extension (2.86 ± 0.51 NU) were higher than those in finger flexion (0.82 ± 0.33 NU), wrist extension with finger extension (0.77 ± 0.46 NU) and wrist extension with finger flexion (0.81 ± 0.58 NU) (p ulnar deviation could induce significant transverse displacement and deformation of the median nerve.

  13. Real-time estimation of 3D human arm motion from markerless images for human-machine interaction

    Science.gov (United States)

    Verma, Siddharth; Kofman, Jonathan

    2003-10-01

    Vision-based motion tracking is commonly used in surveillance, human-machine interfaces in robotics and automation, virtual and augmented reality applications and biomechanics. Most techniques require markers, use a predefined motion sequence or user-intervention for initialization, and do not process in real-time. This paper describes the implementation of a vision-based non-invasive technique for markerless real-time tracking of human-arm motion. Human-arm motion is tracked by processing images from two calibrated cameras in real-time to estimate the position of the 3D joint centers of the wrist and elbow, and determine the orientation of the hand from the 3D positions of the index finger and thumb. Tracking of the hand and arm was carried out without any prior knowledge of subject's arm length, texture, width and distance from the camera.

  14. Abdominal neurenteric cyst

    Institute of Scientific and Technical Information of China (English)

    Radoje (C)olovi(c); MarJan Micev; Miodrag Jovanovi(c); Slavko Mati(c); Nikica Grubor; Henry Dushan E Atkinson

    2008-01-01

    immunoexpression, and the respiratory epithelium revealed a CK8 and CK18 immunoprofile without CK 10/13 positive elements, though neither CEA or AFP positive cells were found. To our knowledge, this is the first reported case of an abdominally located neurenteric cyst with no associated spinal anomalies.

  15. Effects of handle angle and work orientation on hammering: I. Wrist motion and hammering performance.

    Science.gov (United States)

    Schoenmarklin, R W; Marras, W S

    1989-08-01

    This research investigated the range of wrist motion characteristics associated with the ergonomic principle of "bending the tool and not the wrist" as applied to the hammer. It is thought that bending the tool reduces angular wrist motion, which has been shown in the literature to be a risk factor in hand/wrist disorders such as carpal tunnel syndrome and tenosynovitis. Hammer handles angled at 0 (straight), 20, and 40 deg were investigated in this study. For novices, hammer handles bent at 20 and 40 deg resulted in less total ulnar deviation than straight hammers. However, there was a trade-off in beginning and ending positions of the wrist in that the angled hammers reduced ulnar deviation at the impact position but increased radial deviation at the starting position of a hammer stroke. Handle angle did not significantly affect hammering performance. Wrist motion was affected minimally by hammering orientation, but hammering performance was significantly worse in the wall orientation compared with the bench orientation. This research suggests that for novice users, hammers with handles bent in the range of 20 to 40 deg could possibly decrease the incidence of hand/wrist disorders caused by hammering.

  16. Usefulness of interposition arthroplasty in the Sauvé-Kapandji procedure for rheumatoid wrist.

    Science.gov (United States)

    Tanaka, Nobuyuki; Sakahashi, Hisashi; Hirose, Kazuya; Ishima, Takumi; Ishii, Seiichi

    2004-01-01

    The aim of synovectomy combined with the Sauvé-Kapandji (S-K) procedure for the treatment of a rheumatoid wrist is to obtain a stable painless wrist that retains sufficient mobility for function. However, loss of motion occurs postoperatively in most cases. In our study of 59 rheumatoid patients, the results of the transposition of distal strips of retinaculum into the radiocarpal and ulnocarpal joints for interposition arthroplasty to maintain wrist motion (interposition group), and transposition below the extensors to provide a gliding surface (SK group) were evaluated. The distal end of the ulna was fixed to the radius with poly-L-lactic acid screws, and a proximal strip of retinaculum was placed above the extensors after synovectomy of the rheumatoid wrist. Clinical symptoms, radiographic changes, and postoperative complications were assessed 3-9 years (mean 5.9 years) postoperatively. Patients in the interposition group showed better postoperative results, including wrist motion, than those of patients in the SK group. Both procedures resulted in only minor complications such as superficial skin necrosis, hematoma, and superficial infection. We concluded that interposition arthroplasty combined with the S-K procedure using a distal strip of retinaculum might be a safe and appropriate method for wrist reconstruction following synovectomy of a rheumatoid wrist.

  17. 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.

  18. The effect of strapping on the motor performance of the ankle and wrist joints.

    Science.gov (United States)

    Kauranen, K; Siira, P; Vanharanta, H

    1997-08-01

    The purpose of this study was to examine the effect of strapping on different components of motor performance of wrist and ankle joints. The subjects were 14 healthy volunteers (12 females, two males), aged 21-33 years, with no known previous injuries of the ankle and wrist joints. The measurements were made with the HPM/BEP system and Isokinetic Lido Active Multi-joint system. First, the subjects performed the test without strapping and then, on the following day, with strapped right wrist and ankle joints. The strapping of the wrist increased the simple reaction time by 9%, choice reaction time by 9% and decreased the wrist tapping speed by 21%. Wrist strength decreased in flexion (180 degrees/s) by 14% and ulnar deviation (180 degrees/s) by 8%. The strapping of the ankle increased the simple reaction time by 12%, choice reaction time by 9% and decreased foot tapping speed by 14%. Ankle strength in plantar flexion decreased in 60 degrees/s by 22% and 180 degrees/s by 14% and in inversion in 60 degrees/s by 28% and 180 degrees/s by 15%. These results suggest the strapping of ankle and wrist joints reduces motor performance in the above-mentioned directions as measured by the following parameters: simple reaction time, choice reaction time, tapping speed, and muscle strength.

  19. Evaluation and diagnosis of wrist pain: a case-based approach.

    Science.gov (United States)

    Shehab, Ramsey; Mirabelli, Mark H

    2013-04-15

    Patients with wrist pain commonly present with an acute injury or spontaneous onset of pain without a definite traumatic event. A fall onto an outstretched hand can lead to a scaphoid fracture, which is the most commonly fractured carpal bone. Conventional radiography alone can miss up to 30 percent of scaphoid fractures. Specialized views (e.g., posteroanterior in ulnar deviation, pronated oblique) and repeat radiography in 10 to 14 days can improve sensitivity for scaphoid fractures. If a suspected scaphoid fracture cannot be confirmed with plain radiography, a bone scan or magnetic resonance imaging can be used. Subacute or chronic wrist pain usually develops gradually with or without a prior traumatic event. In these cases, the differential diagnosis is wide and includes tendinopathy and nerve entrapment. Overuse of the muscles of the forearm and wrist may lead to tendinopathy. Radial pain involving mostly the first extensor compartment is commonly de Quervain tenosynovitis. The diagnosis is based on history and examination findings of a positive Finkelstein test and a negative grind test. Nerve entrapment at the wrist presents with pain and also with sensory and sometimes motor symptoms. In ulnar neuropathies of the wrist, the typical presentation is wrist discomfort with sensory changes in the fourth and fifth digits. Activities that involve repetitive or prolonged wrist extension, such as cycling, karate, and baseball (specifically catchers), may increase the risk of ulnar neuropathy. Electrodiagnostic tests identify the area of nerve entrapment and the extent of the pathology.

  20. 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.

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

    Science.gov (United States)

    Lee, Su-Ya; Chieh, Hsiao-Feng; Lin, Chien-Ju; Jou, I-Ming; Kuo, Li-Chieh; Su, Fong-Chin

    2016-01-01

    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. PMID:27171198

  2. 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

  3. [Abdominal pregnancy care. Case report].

    Science.gov (United States)

    Morales Hernández, Sara; Díaz Velázquez, Mary Flor; Puello Tamara, Edgardo; Morales Hernández, Jorge; Basavilvazo Rodríguez, Maria Antonia; Cruz Cruz, Polita del Rocío; Hernández Valencia, Marcelino

    2008-10-01

    Abdominal pregnancies are the implantation of gestation in some of the abdominal structures. This kind of pregnancies represents sevenfold maternal death risk than tubarian ectopic pregnancies, and 90-fold death risk than normal ones. Previous cases have erroneously reported as abscess in Douglas punch, and frequently result in obitus or postnatal deaths. We report a case of a patient with 27 years old, and diagnosis of 25.2 weeks of pregnancy, prior placenta and anhidramnios, referred due to difficult in uterine contour delimitation, easy palpation of fetal parts, cephalic pole in left hypochondrious and presence of mass in hypogastria, no delimitations, pain with mobilization, no transvaginal bleed and fetal movements. Interruption of pregnancy is decided by virtue of severe oligohidramnios, retardation in fetal intrabdominal growth, and recurrent maternal abdominal pain. Surgical intervention was carried out for resolution of the obstetrical event, in which was found ectopic abdominal pregnancy with bed placental in right uterine horn that corresponded to a pregnancy of 30 weeks of gestation. Abdominal pregnancy is still a challenge for obstetrics due to its diagnosis and treatment. Early diagnosis is oriented to prevent an intrabdominal hemorrhage that is the main maternal cause of mortality.

  4. [Design of minimally invasive surgery wrist institution actuated by shape memory alloy].

    Science.gov (United States)

    Zhang, Zhenhua; Cao, Tong; Chen, Hua; Liu, Da; Shi, Zhenyun; Ma, Chen

    2013-06-01

    The rapid development of minimally invasive surgery technology requires higher flexibility of surgical treatment and small volume of medical instrument. This paper proposed a new type of minimally invasive surgery wrist institution actuated by TiNi shape memory alloy (SMA) wire. The wrist institution has some advantages such as compact structure, flexible function, light weight, big movement space, and high output position precision. The paper briefly introduces the properties of TiNi SMA and describes the configuration of wrist institution. We also carried out mechanism simulation analysis to the mechanics model and set up kinematics equations, and finally presented the workspace of the institution.

  5. Salvage of a post-traumatic arthritic wrist using the scaphoid as an osteochondral graft.

    Science.gov (United States)

    Marcuzzi, A; Ozben, H; Russomando, A

    2014-09-01

    The authors describe a case of post-traumatic wrist arthritis with an osteochondral defect in the scaphoid fossa of the radius. The patient was treated with proximal row carpectomy, radial styloidectomy and reconstruction of the defect using the proximal half of the scaphoid as an autologous osteochondral graft. Pain relief was achieved while wrist motion and strength were improved. The carpal bones are a source of osteochondral grafts and can be used to expand the indications of motion-preserving wrist salvage procedures.

  6. 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.)

  7. JPRS Report, Arms Control

    Science.gov (United States)

    2007-11-02

    34military activities, whether in the armed forces, their civilian sectors, or in the ’defence’ indus- try". In another paper Professor Carl Sagan ...spurring the development of new weapons. Star Wars is a case in point. As Carl Sagan puts it, the idea is doomed: "SDI is ruinously expensive, it can

  8. Worldwide Report, Arms Control.

    Science.gov (United States)

    1985-08-12

    thai, in the long run one cannot oven tell to willy frandi’and fgon fahr . ’r’ho Soviets arc thus evoking the suspicion that they are playing dirty...material resources and the knowledge of scientists in combatting diseases , if the resources were spent on it that are taken up by the arms race

  9. JPRS Report, Arms Control.

    Science.gov (United States)

    2007-11-02

    Joint-Stock Company"] [Text] A constituent conference of the "Ural- Kosmos " closed joint-stock company [aktsionernoye obshchestvo zakrytogo tipa] has...due to be destroyed under arms cuts. Their warheads will be replaced by communications satellites. The founders of the "Ural- Kosmos " company note

  10. Worldwide Report, Arms Control

    Science.gov (United States)

    2007-11-02

    Soviet Laser Expert (N. G. Bazov Interview; CAMBIO 16, 11-18 Feb 85) 86 Unnamed General Urges French ’Star Wars’ Effort (Hoplites; LE MONDE, 6...1024 85 JPRS-TAC-85-002 1 April 1985 SPACE ARMS SPANISH MAGAZINE CITES SOVIET LASER EXPERT PM211619 [Editorial Report] Madrid CAMBIO 16 in Spanish

  11. Worldwide Report, Arms Control

    Science.gov (United States)

    1985-12-31

    Bonn RHEINISCHER MERKUR /CHRIST UND WELT, 12 Oct 85) . 14 GDR Commentary on Geneva Talks (Various sources,various dates) 19 Military...USSR GENEVA TALKS FRG DEFENSE UNDERSECRETARY SUPPORTS U.S. VIEW ON ARMS CONTROL Bonn RHEINISCHER MERKUR /CHRIST UND WELT in German 12 Oct 85 p 3

  12. Worldwide Report, Arms Control

    Science.gov (United States)

    2007-11-02

    like tired runners exposed to the sights of millions of viewers. The fear of oxygen starvation was handled by the U.S. President on several levels...and to present the U.S. attitudes as the only way out of the maze of the arms race. It is an attempt to push through the old principles of U.S

  13. Effect of Tendon Vibration on Hemiparetic Arm Stability in Unstable Workspaces.

    Directory of Open Access Journals (Sweden)

    Megan O Conrad

    Full Text Available Sensory stimulation of wrist musculature can enhance stability in the proximal arm and may be a useful therapy aimed at improving arm control post-stroke. Specifically, our prior research indicates tendon vibration can enhance stability during point-to-point arm movements and in tracking tasks. The goal of the present study was to investigate the influence of forearm tendon vibration on endpoint stability, measured at the hand, immediately following forward arm movements in an unstable environment. Both proximal and distal workspaces were tested. Ten hemiparetic stroke subjects and 5 healthy controls made forward arm movements while grasping the handle of a two-joint robotic arm. At the end of each movement, the robot applied destabilizing forces. During some trials, 70 Hz vibration was applied to the forearm flexor muscle tendons. 70 Hz was used as the stimulus frequency as it lies within the range of optimal frequencies that activate the muscle spindles at the highest response rate. Endpoint position, velocity, muscle activity and grip force data were compared before, during and after vibration. Stability at the endpoint was quantified as the magnitude of oscillation about the target position, calculated from the power of the tangential velocity data. Prior to vibration, subjects produced unstable, oscillating hand movements about the target location due to the applied force field. Stability increased during vibration, as evidenced by decreased oscillation in hand tangential velocity.

  14. Increasing cognitive load attenuates right arm swing in healthy human walking

    Science.gov (United States)

    Killeen, Tim; Easthope, Christopher S.; Filli, Linard; Lőrincz, Lilla; Schrafl-Altermatt, Miriam; Brugger, Peter; Linnebank, Michael; Curt, Armin; Zörner, Björn; Bolliger, Marc

    2017-01-01

    Human arm swing looks and feels highly automated, yet it is increasingly apparent that higher centres, including the cortex, are involved in many aspects of locomotor control. The addition of a cognitive task increases arm swing asymmetry during walking, but the characteristics and mechanism of this asymmetry are unclear. We hypothesized that this effect is lateralized and a Stroop word-colour naming task-primarily involving left hemisphere structures-would reduce right arm swing only. We recorded gait in 83 healthy subjects aged 18-80 walking normally on a treadmill and while performing a congruent and incongruent Stroop task. The primary measure of arm swing asymmetry-an index based on both three-dimensional wrist trajectories in which positive values indicate proportionally smaller movements on the right-increased significantly under dual-task conditions in those aged 40-59 and further still in the over-60s, driven by reduced right arm flexion. Right arm swing attenuation appears to be the norm in humans performing a locomotor-cognitive dual-task, confirming a prominent role of the brain in locomotor behaviour. Women under 60 are surprisingly resistant to this effect, revealing unexpected gender differences atop the hierarchical chain of locomotor control.

  15. 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 ...

  16. 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...

  17. 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.

  18. 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.

  19. [Gallstone ileus. Abdominal CT usefulness].

    Science.gov (United States)

    Sukkarieh, F; Brasseur, P; Bissen, L

    2004-06-01

    The authors report the case of a 93-year old woman referred to the emergency department and presenting with an intestinal obstruction. Abdominal CT reveals a biliary ileus caused by the migration and the impaction of a 3 cm gallstone in the small bowel. Surgical treatment by enterolithotomy was successful. In over 90% of cases, gallstone ileus is a complication of cholelithiasis and accounts for 25% of intestinal obstruction in patients over 65 years. To reduce morbidity and mortality, early diagnosis and prompt treatment are essential. Abdominal CT-scan is the gold standard technique.

  20. 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.

  1. Diagnosis in acute abdominal pain and ongoing abdominal sepsis

    NARCIS (Netherlands)

    Kiewiet, J.J.S.

    2016-01-01

    Acute abdominal pain is a common reason for presentation at the emergency department. To establish a timely and adequate diagnosis, doctors use the pattern of complaints and physical examination as the basis for the evaluation of a patient. In this thesis we conducted a study that showed that surgeo

  2. Cross-arm replantation for traumatic bilateral upper extremity amputations: a case report.

    Science.gov (United States)

    Liang, Kailu; Zhong, Gang; Yin, Jiahui; Xiang, Zhou; Cen, Shiqiang; Huang, Fuguo

    2011-02-01

    A 40-year-old woman had her right extremity avulsed at the proximal upper arm level and the wrist and hand of her left extremity irretrievably injured in a traffic accident. The right distal forearm was surgically amputated and replanted onto the stump of the left distal forearm. New strategy for nerve repair was applied and the function recovery of the cross-replanted hand was favorable. We thought that cross-extremity replantation was indicated when the patient suffered from bilateral total or subtotal amputation at different levels and orthotopic replantation was impossible.

  3. Star Formation in Spiral Arms

    CERN Document Server

    Elmegreen, Bruce G

    2011-01-01

    The origin and types of spiral arms are reviewed with an emphasis on the connections between these arms and star formation. Flocculent spiral arms are most likely the result of transient instabilities in the gas that promote dense cloud formation, star formation, and generate turbulence. Long irregular spiral arms are usually initiated by gravitational instabilities in the stars, with the gas contributing to and following these instabilities, and star formation in the gas. Global spiral arms triggered by global perturbations, such as a galaxy interaction, can be wavemodes with wave reflection in the inner regions. They might grow and dominate the disk for several rotations before degenerating into higher-order modes by non-linear effects. Interstellar gas flows through these global arms, and through the more transient stellar spiral arms as well, where it can reach a high density and low shear, thereby promoting self-gravitational instabilities. The result is the formation of giant spiral arm cloud complexes,...

  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. 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.)

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

    Science.gov (United States)

    Kang, Yeoun-Seung; Park, Yoon-Ghil; Lee, Bum-Suk; Park, Hyung-Soon

    2013-01-01

    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.

  7. USE OF TECHNOLOGIES OF PLASTIC AND RECONSTRUCTIVE MICROSURGERY IN TREATMENT OF PATIENTS WITH WRIST PATHOLOGY

    Directory of Open Access Journals (Sweden)

    D. I. Kutyanov

    2011-01-01

    Full Text Available We have analyzed the results of treatment of 44 patients with injuries and tumors of wrist. The main aims of microsurgical interventions in such patients were replacement of bone defects (40,9%, replacement of skin defects (25,0%, and also elimination of contractures of wrist joint and fingers (20,5%. At the same time high frequency of use of bony flaps was caused mostly not by the need in replacement of defects of bones, but by the need in stabilization of wrist joint aiming to create the conditions for normal function of fingers. It has been stated that the use of technologies of plastic and reconstructive microsurgery in patients with wrist pathology is not the main factor determing the good result of treatment. The good result of treatment is mainly determined by the condition of fingers, not only appropriate surgical treatment but also adequate rehabilitation helps them achieve their necessary function.

  8. Sauvé-Kapandji procedure in a patient with wrist disarticulation: case report.

    Science.gov (United States)

    Gong, Hyun Sik; Chung, Myung Ki; Baek, Goo Hyun

    2014-01-01

    The advantage of preserving the distal radioulnar joint in wrist disarticulation is that full forearm rotation is possible if the joint is intact, which improves the capability of the amputee. The Sauvé-Kapandji procedure has been performed to treat rheumatoid or post-traumatic chronic instability and/or arthritis of the distal radioulnar joint. We report a patient with wrist disarticulation that presented to us with limited supination of the wrist due to an injured distal radioulnar joint. We performed the Sauvé-Kapandji procedure, and the patient could regain functional supination of the forearm without losing the ulnar styloid flare that improved prosthetic suspension. This case suggests that the Sauvé-Kapandji procedure can be performed to maintain the advantage of wrist disarticulation even when the initial trauma involves an irreparable injury of the distal radioulnar joint.

  9. 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.

  10. [Post-traumatic carpal collapse (SLAC- and SNAC-wrist)--stage classification and therapeutic possibilities].

    Science.gov (United States)

    Krimmer, H; Krapohl, B; Sauerbier, M; Hahn, P

    1997-09-01

    Longstanding scaphoid nonunion or scapholunate ligament injuries can lead to carpal collapse. SLAC-wrist (scapholunate advanced collapse) following scapholunate dissociation and SNAC-wrist (scaphoid nonunion advanced collapse) after missed fusion of scaphoid fracture should be differentiated. Severity of degenerative changes is classified by three stages. In stage I where arthrosis is limited to the radial styloid reconstructive procedures of the scaphoid or scapholunate ligament are the treatment of choice. In stage II including arthrosis of the radioscaphoid joint and stage III with additional arthrosis in the midcarpal joint these procedures are excluded. Salvage procedures preserving wrist mobility like midcarpal fusion or proximal row carpectomy are preferable to total wrist fusion which represents the last line of defence.

  11. A new plate for partial wrist fusions: results in midcarpal arthrodesis.

    Science.gov (United States)

    Allison, D M

    2011-05-01

    Partial wrist fusions are commonly performed for various degenerative conditions. In this series 30 wrists had a scaphoidectomy and midcarpal arthrodesis performed with a new plate. The most common indications were SLAC and SNAC wrists. In 24 cases a four-corner arthrodesis was done and in the other six the triquetrum was not included. Mean follow-up was 3 years. Mean flexion was 31° and extension 35°. Union was achieved in all wrists despite movement being commenced early. The plates proved straightforward to use, allowing some latitude in placement. This series confirms that scaphoidectomy and midcarpal arthrodesis is a useful salvage procedure and that these plates are suitable for that purpose.

  12. 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.

  13. 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.

  14. Imaging of Sports-related Hand and Wrist Injuries: Sports Imaging Series.

    Science.gov (United States)

    Cockenpot, Eric; Lefebvre, Guillaume; Demondion, Xavier; Chantelot, Christophe; Cotten, Anne

    2016-06-01

    Hand and wrist injuries are common occurrences in amateur and professional sports and many of them are sport-specific. These can be divided into two categories: traumatic injuries and overuse injuries. The aim of this article is to review the most common hand and wrist sports-related lesions. Acute wrist injuries are predominantly bone fractures, such as those of the scaphoid, hamate hook, and ulnar styloid. Ligament lesions are more challenging for radiologists and may lead to carpal instability if undiagnosed. Overuse wrist injuries are mainly represented by tendinous disorders, with De Quervain syndrome and extensor carpi ulnaris tendon disorders being the most common among them; however, there are other possible disorders such as impaction syndromes, stress fractures, and neurovascular lesions. Finally, finger lesions, including closed-tendon injuries (mallet and boutonniere injuries, jersey finger, and boxer's knuckle), flexor pulley injuries, and skier's thumb, should also be detected. (©) RSNA, 2016 Online supplemental material is available for this article.

  15. 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.

  16. 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

  17. Delayed ulnar neuropathy at the wrist following open carpal tunnel release.

    Science.gov (United States)

    Pingree, Matthew J; Bosch, E Peter; Liu, Patrick; Smith, Benn E

    2005-03-01

    Open carpal tunnel release is a common and successful treatment of median neuropathy at the wrist (carpal tunnel syndrome). We report a case of delayed ulnar neuropathy at the wrist with onset 2 months after open carpal tunnel release. Clinical findings, electrophysiological studies, magnetic resonance imaging, and surgical exploration demonstrated ulnar nerve compression at Guyon's canal resulting from translocation of the carpal tunnel contents. To our knowledge, this is an unreported complication of open carpal tunnel release that merits wide appreciation.

  18. [Surgical treatment possibilities of advanced carpal collapse (SNAC/SLAC wrist)].

    Science.gov (United States)

    Sauerbier, M; Bickert, B; Tränkle, M; Kluge, S; Pelzer, M; Germann, G

    2000-07-01

    Longstanding and untreated scaphoid fractures and scapholunate dissociations lead to painful destruction of the wrist with carpal collapse. The severity of degenerative arthrosis is classified in three stages and can be treated adequate operatively. SNAC wrist (scaphoid nonunion advanced collapse) after failed fusion of the scaphoid and SLAC wrist (scapholunate advanced collapse) after scapholunate dissociation should be differentiated. The reconstruction of the scaphoid or scapholunate ligament in stage II and III is no reasonable option. Motion preserving procedures such as proximal row carpectomy or midcarpal arthrodesis are preferable in this situation. Thirty-one male patients (average 41 years) were treated for SNAC or SLAC wrist with midcarpal arthrodesis. All patients were reexamined, the mean follow-up was 15 months. Grip strength was measured with the Dexter-System, pain was evaluated by a visual analogue scale (VAS 0-100). Patients' daily activities and general quality of life were estimated with the DASH-questionnaire. Pain was reduced to 50% compared to the preoperative situation. Grip strength improved to 60% of the opposite side. Active range of motion reached 50% of the contralateral wrist. Total DASH-score reached 39.0. Nonunion at the fusion site necessitated additional surgery in four patients resulting in total wrist arthrodesis. 80% of the patients returned to their original occupation. Midcarpal fusion is a reliable procedure for treating the difficult condition of advanced carpal collapse if proper realignment of the carpus is performed. The DASH-score reflects the subjective impressions of the patients in daily life and justifies the choice of a salvage procedure preserving wrist mobility. Total wrist fusion represents the last line of defense.

  19. Scapholunate advanced collapse (SLAC) and scaphoid nonunion advanced collapse (SNAC) wrist arthritis.

    Science.gov (United States)

    Shah, Chirag M; Stern, Peter J

    2013-03-01

    Scapholunate advanced collapse (SLAC) and scaphoid nonunion advanced collapse (SNAC) are the two most common patterns of posttraumatic wrist arthritis. This review discusses the etiology and clinical evaluation, as well as up-to-date treatment options, for both of these conditions. Classic as well as newer innovative techniques are discussed with clinical outcomes in order to provide an evidence-based review of the world's literature on SLAC/SNAC wrist.

  20. Scapholunate advanced collapse (SLAC) and scaphoid nonunion advanced collapse (SNAC) wrist arthritis

    OpenAIRE

    Shah, Chirag M.; Stern, Peter J.

    2013-01-01

    Scapholunate advanced collapse (SLAC) and scaphoid nonunion advanced collapse (SNAC) are the two most common patterns of posttraumatic wrist arthritis. This review discusses the etiology and clinical evaluation, as well as up-to-date treatment options, for both of these conditions. Classic as well as newer innovative techniques are discussed with clinical outcomes in order to provide an evidence-based review of the world’s literature on SLAC/SNAC wrist.

  1. 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.

  2. A Clinical Trial with Brazilian Arnica (Solidago chilensis Meyen) Glycolic Extract in the Treatment of Tendonitis of Flexor and Extensor Tendons of Wrist and Hand.

    Science.gov (United States)

    da Silva, Ary Gomes; Machado, Elbe Rodrigues; de Almeida, Leonardo Mendes; Nunes, Ricardo Marcelo Menezes; Giesbrecht, Patrícia Caldeira Pena; Costa, Regina Mamed; Costa, Helber B; Romão, Wanderson; Kuster, Ricardo Machado

    2015-06-01

    One of the Brazilian arnicas, Solidago chilensis Meyen, is a species of the Asteraceae family. This plant is known by this common name because it shares remarkably similar organoleptic properties with the genus Arnica L., also within the family Asteraceae. We examined the effectiveness of the S. chilensis fluid extract used externally for treating tendinitis of flexor and extensor tendons of wrist and hand in placebo-controlled double-blind clinical pharmacological studies. This study was approved by the Ethical Committee for Scientific Research in Human Beings at University Vila Velha-UVV. Two daily skin applications on the arm skin of a gel cream containing a 5% glycolic plant extract were administered to eight volunteers for 21 days. Among the volunteers, one of their arms was used as the placebo group, and the other one was used as a test group. Statistical data analyses demonstrated a significant reduction in the perception of pain in the arms in the test group, when it was compared to those receiving only the placebo.

  3. 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.

  4. Chronic Abdominal Pain in Children

    NARCIS (Netherlands)

    C.F.M. Gijsbers (Carolien)

    2012-01-01

    textabstractRecurrent abdominal pain (RAP) was first defined in 1958 by Apley as “at least 3 bouts of pain, severe enough to affect activities, over a period of at least 3 months” (1). This was a landmark publication with great impact, showing, that emotional disturbances played a role in many patie

  5. 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....

  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. 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

    2016-08-01

    [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.

  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. Effects of Wrist Posture and Fingertip Force on Median Nerve Blood Flow Velocity

    Science.gov (United States)

    Wilson, Katherine E.; Tat, Jimmy

    2017-01-01

    Purpose. The purpose of this study was to assess nerve hypervascularization using high resolution ultrasonography to determine the effects of wrist posture and fingertip force on median nerve blood flow at the wrist in healthy participants and those experiencing carpal tunnel syndrome (CTS) symptoms. Methods. The median nerves of nine healthy participants and nine participants experiencing symptoms of CTS were evaluated using optimized ultrasonography in five wrist postures with and without a middle digit fingertip press (0, 6 N). Results. Both wrist posture and fingertip force had significant main effects on mean peak blood flow velocity. Blood flow velocity with a neutral wrist (2.87 cm/s) was significantly lower than flexed 30° (3.37 cm/s), flexed 15° (3.27 cm/s), and extended 30° (3.29 cm/s). Similarly, median nerve blood flow velocity was lower without force (2.81 cm/s) than with force (3.56 cm/s). A significant difference was not found between groups. Discussion. Vascular changes associated with CTS may be acutely induced by nonneutral wrist postures and fingertip force. This study represents an early evaluation of intraneural blood flow as a measure of nerve hypervascularization in response to occupational risk factors and advances our understanding of the vascular phenomena associated with peripheral nerve compression.

  10. 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.

  11. SHOCK-ABSORBING EFFECTS OF VARIOUS PADDING CONDITIONS IN IMPROVING EFFICACY OF WRIST GUARDS

    Directory of Open Access Journals (Sweden)

    Kyu-Jung Kim

    2004-03-01

    Full Text Available The use of wrist guards has limited efficacy in preventing wrist injuries during falling in many sports activities. The objectives of this study were to measure the ground reaction force of the hand under simulated impact of the forearm and hand complex with different padding conditions of wrist guards and to analyze their impact force attenuation and maximum energy absorption for improved functional efficiency. A total of 15 subjects, wearing a commercial wrist guard, participated in a cable-released hand impact experiment to test four different conditions on the volar aspect of the hand, which include a wrist guard without a volar splint (bare hand, with a volar splint (normal use, with a volar splint and additional viscoelastic polymeric padding, and a volar splint and additional air cell padding. The ground reaction force and acceleration of the hand were measured using a force platform mounted on an anti-vibration table and a miniature accelerometer, respectively. Additional padding on the bare hand could substantially improve the maximum energy absorption by more than 39%, with no differences with each other. However, only the air cell padding could simultaneously improve the impact force attenuation by 32% compared with the bare hand impact without compromising the maximum energy absorption. It is recommended that common wrist guard design should provide more compliant padding in the volar aspect to improve the impact force attenuation through optimal material selection and design

  12. 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.

  13. 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.

  14. Expertise-dependent modulation of muscular and non-muscular torques in multi-joint arm movements during piano keystroke.

    Science.gov (United States)

    Furuya, S; Kinoshita, H

    2008-10-02

    The problem of skill-level-dependent modulation in the joint dynamics of multi-joint arm movements is addressed in this study using piano keystroke performed by expert and novice piano players. Using the measured kinematic and key-force data, the time varying net, gravitational, motion-dependent interaction (INT), key-reaction (REA), and muscular (MUS) torques at the shoulder, elbow, wrist, and metacarpophalangeal (MP) joints were computed using inverse dynamics techniques. INTs generated at the elbow and wrist joints, but not those at the MP joint, were greater for the experts as compared with the novices. REA at the MP joint, but not at the other joints, was less for the experts as compared with the novices. The MUSs at the MP, wrist, and elbow joints were smaller, and that at the shoulder joint was larger for the experts as compared with the novices. The experts also had a lesser inter-strike variability of key striking force and key descending velocity as compared with the novices. These findings indicated that the relationship among the INT, REA, and MUS occurring at the joints of the upper-extremity differed between the expert and novice piano players, suggesting that the organization of multi-joint arm movement is modulated by long-term motor training toward facilitating both physiological efficiency and movement accuracy.

  15. Abdominal aortic aneurysm repair - open - discharge

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/patientinstructions/000240.htm Abdominal aortic aneurysm repair - open - discharge To use the sharing features ... References Orandi BJ, Black JH. Open repair of abdominal aortic aneurysms. In: Cameron JL, Cameron AM, eds. Current Surgical ...

  16. 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 ...

  17. 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.

  18. 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

  19. JPRS Report, Arms Control

    Science.gov (United States)

    2007-11-02

    SINMUN in Korean 19 Jan 90 p 2 [ Editorial : "Arms Reduction Amid East-West Reconcil- iation"] [Text] It appears that with the end of cold-war, the...Navigation Radar Deployment PY1701143090 La Paz La Red Panamericana in Spanish 1130 GMT 17 Jan 90 [Text] Aeronautics Minister Luis Gonzales...airspace and that it can guarantee our sovereignty. Aeronautics Military Under Secretary Installed PY1701125290 La Paz La Red Panamericana in

  20. Worldwide Report, Arms Control.

    Science.gov (United States)

    2007-11-02

    Soviet violations, the Pentagon and the White House ended up in mush . Nevertheless, armed with mush as evidence, the American secretary of...YORK TIMES calling anti-Soviet charges mush is out- numbered by thousands of statements on radio and television, speeches before various...audiences, and articles in newspapers and magazines where that same mush is used as a serious argument. USSR Complying Treaties LD120557 Moscow

  1. Worldwide Report, Arms Control

    Science.gov (United States)

    2007-11-02

    Service, Springfield, Virginia 22161. In order- ing, it is recommended that the JPRS number, title, date and author, if applicable, of publication be...Road, Arlington, Virginia 22201. JPRS-TAC-86-025 14 March 1986 WORLDWIDE REPORT ARMS CONTROL CONTENTS U.S.-USSR GENEVA TALKS, USSR: Possibility for...34Vreyma" newscast] [Excerpts] A Moscow premiere. Our correspondent reports: The audience is hurrying to a premiere at the Moscow Satire Theater. What

  2. 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.

  3. 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.

  4. 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.

  5. Abdominal Compartment Syndrome: pathophysiology and definitions

    OpenAIRE

    Cheatham Michael L

    2009-01-01

    Abstract "Intra-abdominal hypertension", the presence of elevated intra-abdominal pressure, and "abdominal compartment syndrome", the development of pressure-induced organ-dysfunction and failure, have been increasingly recognized over the past decade as causes of significant morbidity and mortality among critically ill surgical and medical patients. Elevated intra-abdominal pressure can cause significant impairment of cardiac, pulmonary, renal, gastrointestinal, hepatic, and central nervous ...

  6. Superman play and pediatric blunt abdominal trauma.

    Science.gov (United States)

    Machi, J M; Gyuro, J; Losek, J D

    1996-01-01

    Two pediatric patients with life-threatening intra-abdominal injuries associated with Superman play are presented. The cases illustrate the importance of knowing the mechanism of injury in the assessment of children with blunt abdominal trauma. The diagnostic value of liver enzymes and the controversies surrounding the radiographic assessment of pediatric blunt abdominal trauma are presented.

  7. 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.

  8. 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

  9. A repeated-measures analysis of the effects of soft tissues on wrist range of motion in the extant phylogenetic bracket of dinosaurs: Implications for the functional origins of an automatic wrist folding mechanism in Crocodilia.

    Science.gov (United States)

    Hutson, Joel David; Hutson, Kelda Nadine

    2014-07-01

    A recent study hypothesized that avian-like wrist folding in quadrupedal dinosaurs could have aided their distinctive style of locomotion with semi-pronated and therefore medially facing palms. However, soft tissues that automatically guide avian wrist folding rarely fossilize, and automatic wrist folding of unknown function in extant crocodilians has not been used to test this hypothesis. Therefore, an investigation of the relative contributions of soft tissues to wrist range of motion (ROM) in the extant phylogenetic bracket of dinosaurs, and the quadrupedal function of crocodilian wrist folding, could inform these questions. Here, we repeatedly measured wrist ROM in degrees through fully fleshed, skinned, minus muscles/tendons, minus ligaments, and skeletonized stages in the American alligator Alligator mississippiensis and the ostrich Struthio camelus. The effects of dissection treatment and observer were statistically significant for alligator wrist folding and ostrich wrist flexion, but not ostrich wrist folding. Final skeletonized wrist folding ROM was higher than (ostrich) or equivalent to (alligator) initial fully fleshed ROM, while final ROM was lower than initial ROM for ostrich wrist flexion. These findings suggest that, unlike the hinge/ball and socket-type elbow and shoulder joints in these archosaurs, ROM within gliding/planar diarthrotic joints is more restricted to the extent of articular surfaces. The alligator data indicate that the crocodilian wrist mechanism functions to automatically lock their semi-pronated palms into a rigid column, which supports the hypothesis that this palmar orientation necessitated soft tissue stiffening mechanisms in certain dinosaurs, although ROM-restricted articulations argue against the presence of an extensive automatic mechanism. Anat Rec, 297:1228-1249, 2014. © 2014 Wiley Periodicals, Inc.

  10. Intra-Abdominal Actinomycosis Mimicking Malignant Abdominal Disease

    Directory of Open Access Journals (Sweden)

    Ali Ridha

    2017-01-01

    Full Text Available Abdominal actinomycosis is a rare infectious disease, caused by gram positive anaerobic bacteria, that may appear as an abdominal mass and/or abscess (Wagenlehner et al. 2003. This paper presents an unusual case of a hemodynamically stable 80-year-old man who presented to the emergency department with 4 weeks of worsening abdominal pain and swelling. He also complains of a 20-bound weight loss in 2 months. A large tender palpable mass in the right upper quadrant was noted on physical exam. Laboratory studies showed a normal white blood cell count, slightly decreased hemoglobin and hematocrit, and mildly elevated total bilirubin and alkaline phosphatase. A CT with contrast was done and showed a liver mass. Radiology and general surgery suspected malignancy and recommended CT guided biopsy. The sample revealed abundant neutrophils and gram positive rods. Cytology was negative for malignancy and cultures eventually grew actinomyces. High dose IV penicillin therapy was given for 4 weeks and with appropriate response transitioned to oral antibiotic for 9 months with complete resolution of symptoms.

  11. Intra-Abdominal Actinomycosis Mimicking Malignant Abdominal Disease

    Science.gov (United States)

    Oguejiofor, Njideka; Al-Abayechi, Sarah; Njoku, Emmanuel

    2017-01-01

    Abdominal actinomycosis is a rare infectious disease, caused by gram positive anaerobic bacteria, that may appear as an abdominal mass and/or abscess (Wagenlehner et al. 2003). This paper presents an unusual case of a hemodynamically stable 80-year-old man who presented to the emergency department with 4 weeks of worsening abdominal pain and swelling. He also complains of a 20-bound weight loss in 2 months. A large tender palpable mass in the right upper quadrant was noted on physical exam. Laboratory studies showed a normal white blood cell count, slightly decreased hemoglobin and hematocrit, and mildly elevated total bilirubin and alkaline phosphatase. A CT with contrast was done and showed a liver mass. Radiology and general surgery suspected malignancy and recommended CT guided biopsy. The sample revealed abundant neutrophils and gram positive rods. Cytology was negative for malignancy and cultures eventually grew actinomyces. High dose IV penicillin therapy was given for 4 weeks and with appropriate response transitioned to oral antibiotic for 9 months with complete resolution of symptoms. PMID:28299215

  12. 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.

  13. 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

  14. Function of the shoulder muscles during arm elevation: an assessment using positron emission tomography

    Science.gov (United States)

    Omi, Rei; Sano, Hirotaka; Ohnuma, Masahiro; Kishimoto, Koshi N; Watanuki, Shoichi; Tashiro, Manabu; Itoi, Eiji

    2010-01-01

    Although 2-deoxy-2-[18F]fluoro-D-glucose (FDG) positron emission tomography (PET) has been used for the assessment of skeletal muscle activities, its application to the shoulder muscles is only sparse. The purpose of this study was to investigate the activities of the shoulder muscles during arm elevation using PET. Six healthy volunteers performed an arm elevation exercise before and after FDG injection. The exercise consisted of 200 repetitions of arm elevation in the scapular plane with a 0.25-kg weight fixed to the wrist on both arms. PET examination was performed 50 min after FDG injection. For control data, PET scan was repeated for each subject on a separate day without any exercise. The volume of interest was established for each shoulder muscle. The subscapularis was divided into three portions (superior, middle, and inferior). The standardized uptake value (SUV) was calculated in each muscle to quantify its activity. The SUVs increased significantly after exercise in the deltoid, supraspinatus, and the superior portion of subscapularis. Among three divided portions of the subscapularis, the SUV of the superior one-third was significantly greater than the rest of the muscle after exercise. Our current study clearly indicated that there were two functionally different portions in the subscapularis muscle and the superior one-third played an important role during arm elevation in the scapular plane. PMID:20298439

  15. 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.

  16. The Diagnostic Value of Intra-abdominal Pressure in Patients with Blunt Acute Abdominal Trauma

    Directory of Open Access Journals (Sweden)

    Huseyin Narci

    2012-06-01

    Full Text Available Purpose:The objective of this study was to determine the diagnostic value of intra-abdominal pressure measurement in blunt abdominal trauma patients. Method: A prospective study was performed in 49 patients with blunt trauma in our university hospital for 1 years. Patients were randomly into two groups as intra-abdominal trauma (n=28 and extraabdominal trauma (n=21 groups. Intra-abdominal pressures was measured an classified as normal (10 cm H2O or less, elevated (more than 10 cm H2O determined indirectly. Results: No significant differences were found between abdominal trauma and extra-abdominal trauma groups from the point of intra-abdominal pressure (IAP. One the other hand, in abdominal trauma group; significant differences were observed between operated patients. Intra-abdominal bleeding was found in 10 patients and all of them elevated IAP values (exceeding 16 cm H2O. For determining the intra-abdominal injury, IAP had a sensitivity of 93%, specificity 38% in patients. Conclusion: IAP exceeding 16 cm H2O with blunt abdominal trauma patients abdominal trauma can be detected. It is thought that IAP, indirect monitoring of abdominal trauma patients is a reproducible, scientific guide and simple method.To determine the efficacy of the measurement of intra-abdominal pressure in blunt abdominal trauma patients, further studies should be done. [Cukurova Med J 2012; 37(3.000: 157-161

  17. 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.

  18. 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.

  19. 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)

  20. AES i ARM procesori

    Directory of Open Access Journals (Sweden)

    Danijela D. Protić

    2013-12-01

    Full Text Available Potreba za zaštitom informacija dovodi do velikih problema u izradi prenosivih uređaja kojima su limitirani snaga, memorija i energija. Ukoliko se takvim uređajima dodaju koprocesori, koji treba da obavljaju funkcije kriptozaštite, njihove se dimenzije povećavaju, pojavljuje se nefleksibilnost pa cena uređaja raste i do nekoliko puta. Na drugoj strani, algoritmi za zaštitu podataka su često memorijski zahtevni, a zbog velikog broja operacija koje je potrebno izvršavati u procesima šifrovanja i dešifrovanja, koprocesori često uspore rad osnovnog procesora. Za jedan od standarda za kriptozaštitu, AES, NIST je prihvatio Rijndaelov blokovski algoritam sa dužinom ulaznog i izlaznog bloka od 128 b, i dužinama šifarskog ključa od 128 b, 192 b i 256 b. Zbog karakteristika male potrošnje, 32-bitske arhitekture i brzog izvršavanja instrukcija, ARM procesori mogu da realizuju kriptozaštitu podataka, između ostalog i AES-om, a da ne opterete glavne procese u sistemima u kojima se koriste. Tehnologija ARM-a zaštićena je kao intelektualna svojina, pa je veliki broj proizvođača koristi za razvoj sopstvenih proizvoda, što je rezultovalo činjenicom da je u svetu proizvedeno preko 2 milijarde čipova koji su bazirani na ovoj tehnologiji. U radu su prikazane mogućnosti za poboljšanja u izvršenju algoritma AES primenom najnovijih verzija ARM procesora.

  1. Evaluation of a compact portable DEXA unit for wrist densitometry

    Energy Technology Data Exchange (ETDEWEB)

    Mares, T.; Bonovas, G.; Larcos, G. [Westmead Hospital, Sydney, NSW (Australia). Department of Nuclear Medicine

    1998-06-01

    Full text: Recently, a number of manufacturers have introduced compact, portable DEXA units in order to facilitate osteoporosis screening in remote communities and on an in-office basis. The purposes of this study were to evaluate the accuracy and reproducibility of the Norland-Stratec (pDEXA) compared to measurements obtained using a conventional densitometer (Norland XR-36). We recruited 61 adults (3 men, 58 women) with mean age 54 years (range: 19-76) referred for clinical assessment of BMD. Most patients had medications (n=39; 64%) or disorders (n=48;79%) known to interfere with bone mineral metabolism. Subjects underwent bone densitometry of the lumbar spine, (AP; L2-4) femoral neck and distal radius/ulna of the nondominant forearm using the Norland XR-36, with the wrist subsequently re-scanned on pDEXA. Four subjects also underwent 5 scans each on the pDEXA. Mean BMD for the distal radius/ulna was 0.30g/cm2 (range: 0.17 - 0.539/cm2; XR-36) vs 0.319/cm2 (range: 0.18-0.56 g/cm2; pDEXA), r = 0.98 (SEE = 0.07). Mean BMC for the distal radius/ulna was 1.229 (range: 0.67-2.59; XR-36) vs 1.289 (range:0.74-2.69; pDEXA), r = 0.97 (SEE= 0.08). The CV for pDEXA was 0.8% (BMD) and 2.5% (BMC). Thus, we conclude that pDEXA has excellent in-vivo reproducibility, with good correlation of BMD and BMC with standard densitometers

  2. Worldwide Report, Arms Control

    Science.gov (United States)

    2007-11-02

    put their feet on the table.... But that Is not the USSR’s problem. It is not for the USSR to teach the rules of etiquette vh~nh are broken in the...34 /12858 CSO: 5200/2634 • 138 - RELATED ISSUES LABOR PARTY DISTRICT CONGRESS: BAN NUCLEAR ARMED SHIPS Oslo AFTENPOSTEN in Norwegian 27 Jan 86 p 3 [Article...that countries which send warships into Norwegian ports should guarantee that these ships are not carry- ing nuclear weapons. The requirement would

  3. 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 

  4. 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

  5. Protocol variations in arm position influence the magnitude of waist girth.

    Science.gov (United States)

    Lennie, Susan C; Amofa-Diatuo, Tracy; Nevill, Alan; Stewart, Arthur D

    2013-01-01

    Waist girth is recognised as a better predictor of obesity, particularly abdominal obesity, compared to other measures. Although several protocols for waist girth exist, arm position is either ignored, or not specified in unambiguous terms. Therefore, the purpose of this study was to determine if arm position influenced anthropometric waist girth measurement. Waist girth was measured in 92 adults (19 males, 73 females) with arms relaxed, abducted, horizontal, folded across the chest (three variations) and raised vertically. Duplicate measures, in all positions, were recorded by a single International Society for the Advancement of Kinanthropometry (ISAK)-trained technician to a precision of 0.2% technical error of measurement (TEM). Arm position had a significant effect (P < 0.001) on waist girth. Male participants had greater waist girth than females (P < 0.001) and the waist girth differences across the varying arm positions exhibited a significant position-by-gender interaction (P < 0.001). The arm position-by-body mass index (BMI) category interaction was also significant (P = 0.016) with greater differences observed at higher BMI. These findings suggest caution in comparing results of different studies where arm position is not specified and indicate that the arm position corresponding to the ISAK protocol has the lowest error and is therefore recommended.

  6. 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.

  7. Inflammatory arthritis-like and other MR findings in wrists of asymptomatic subjects

    Energy Technology Data Exchange (ETDEWEB)

    Robertson, P.L.; Page, P.J.; McColl, G.J. [University of Melbourne, Royal Melbourne Hospital, Radiology Department, Parkville (Australia)

    2006-10-15

    To describe magnetic resonance (MR) imaging findings in the wrists of asymptomatic subjects that might be confused with pathologic findings. MR examination of the dominant wrist was performed in 30 asymptomatic volunteers aged 22-49 years using pre-contrast and post-contrast sequences in the coronal and axial planes. The bases of the metacarpals, the carpus and the distal radius and ulna were evaluated by two musculoskeletal radiologists for lesions, notches, blood vessels and synovial enhancement. There were 24 bright osseous lesions (erosions, intraosseous ganglia, oedema or cysts) in 14 subjects. Intraosseous blood vessels were seen in all but one wrist examined, most commonly in the capitate and lunate bones. Enhancement was present in 26 of 27 notches identified at the base of the second metacarpal and less commonly in the capitate, hamate and triquetral notches. A small joint effusion was present in 14 subjects. Joint or soft-tissue enhancement was identified in 16 wrists. Many MR abnormalities and variants may be detected in the wrists of asymptomatic subjects. Many of these could be confused with pathologic findings usually associated with inflammatory arthritis. (orig.)

  8. Long-term results of the Sauvé-Kapandji procedure in the rheumatoid wrist.

    Science.gov (United States)

    Papp, Miklós; Papp, Levente; Lenkei, Balázs; Károlyi, Zoltán

    2013-12-01

    This retrospective long-term study evaluates the clinical and radiological results of the Sauvé-Kapandji procedure in rheumatoid wrists. Fourteen patients with rheumatoid arthritis who had undergone a Sauvé-Kapandji procedure were examined 10 to 16.5 years after surgery. Range of motion and grip strength were measured. The patients' complaints related with instability of the ulnar stump, the residual pain in the wrist, and the function of the operated hand were assessed. The review also included a radiological examination. Pain was found to have decreased and the gripping strength of the hand to have increased in all the patients. The range of wrist rotation was significantly improved. On radiographs, there were no signs of increased ulnar translation of the carpus. We noted no instance of subluxation or dislocation of the ulnar stump. In this long-term evaluation, the Sauvé-Kapandji procedure was found to provide long-term improvement of the function of the wrist-hand complex, by eliminating the distal radio-ulnar joint which is a major source of pain in the rheumatoid wrist.

  9. 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

  10. 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.

  11. 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.

  12. 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.

  13. Robotic Arm Biobarrier Cable

    Science.gov (United States)

    2008-01-01

    This image, taken by the Surface Stereo Imager on NASA's Phoenix Mars Lander on the 14th Martian day of the mission (June 7, 2008), shows the cable that held the Robotic Arm's biobarrier in place during flight has snapped. The cable's springs retracted to release the biobarrier right after landing. To the lower right of the image a spring is visible. Extending from that spring is a length of cable that snapped during the biobarrier's release. A second spring separated from the cable when it snapped and has been photographed on the ground under the lander near one of the legs. 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.

  14. 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.

  15. 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.

  16. Development of an Underactuated 2-DOF Wrist Joint using McKibben PAMs

    Science.gov (United States)

    Rajagopal, S. P.; Jain, S.; Ramasubramanian, S. N.; Johnson, B. V.; Dwivedy, S. K.

    2014-10-01

    In this work, model of an underactuated 2-DOF wrist joint with pneumatically actuated muscles is proposed. For the joint, McKibben-type artificial muscles are used in parallel configuration for the actuation. For each Degree of Freedom (DOF) one agonist-antagonist pair arrangement is usually used with a pulley mechanism. A mathematical model of wrist joint is derived using conventional forward kinematic analysis. The static model relating pressure in the muscle with the orientation of the wrist joint is obtained by combining the experimental data and mathematical model. Regulation of pressure can be achieved by pulse width modulation control of on/off solenoid valves. A set of free vibration experiments are done for the dynamic identification of the muscle characteristics.

  17. The Sauvé-Kapandji procedure for posttraumatic wrist disorders: further experience.

    Science.gov (United States)

    De Smet, L A; Van Ransbeeck, H

    2000-06-01

    A prospective survey was conducted to evaluate the outcome of the Sauvé-Kapandji procedure for posttraumatic wrist disorders. Eighty four patients were treated, all with posttraumatic disorders of the distal radioulnar joint, 73 as an isolated procedure, 11 in combination with another wrist procedure. There was significant pain decrease and high patient satisfaction (74%). The range of motion increased in the flexion/extension arc from 109 degrees to 124 degrees (p = 0.006) and, in those with limited forearm rotation, from 71 degrees to 134 degrees (p = 0.006). According to the Mayo Clinic wrist score, we obtained 20 excellent, 34 good, 18 fair and 12 poor results. Complications were rare.

  18. [The principal mechanisms of age-related involution of wrist bones].

    Science.gov (United States)

    Pigolkin, Iu I; Fedulova, M V; Iurchenko, M A

    2012-01-01

    The objective of the present study was to elucidate the general mechanisms underlying age-specific changes in the bone tissue of the wrists by the assessment of the signs of their ageing on X-ray images. Roentgenograms of the left wrist of 261 men and 333 women at the age varying from 18 to 90 years were analysed by the planigraphic technique with the use of a scoring system for the estimation of the severity of the signs of ageing (osteoporosis, osteophytes). The study has shown that the signs of ageing in wrist bones become apparent approximately 4-6 years after the completion of ossification. The age-specific changes in the bones are characterized by a strong sexual dimorphism while both the rate of appearance and the intensity of expression of the markers of bone ageing depend on their localization on the radius and phalanges.

  19. 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

  20. The Neanderthal lower arm.

    Science.gov (United States)

    De Groote, Isabelle

    2011-10-01

    Neanderthal forearms have been described as being very powerful. Different individual features in the lower arm bones have been described to distinguish Neanderthals from modern humans. In this study, the overall morphology of the radius and ulna is considered, and morphological differences among Neanderthals, Upper Paleolithic Homo sapiens and recent H. sapiens are described. Comparisons among populations were made using a combination of 3D geometric morphometrics and standard multivariate methods. Comparative material included all available complete radii and ulnae from Neanderthals, early H. sapiens and archaeological and recent human populations, representing a wide geographical and lifestyle range. There are few differences among the populations when features are considered individually. Neanderthals and early H. sapiens fell within the range of modern human variation. When the suite of measurements and shapes were analyzed, differences and similarities became apparent. The Neanderthal radius is more laterally curved, has a more medially placed radial tuberosity, a longer radial neck, a more antero-posteriorly ovoid head and a well-developed proximal interosseous crest. The Neanderthal ulna has a more anterior facing trochlear notch, a lower M. brachialis insertion, larger relative mid-shaft size and a more medio-lateral and antero-posterior sinusoidal shaft. The Neanderthal lower arm morphology reflects a strong cold-adapted short forearm. The forearms of H. sapiens are less powerful in pronation and supination. Many differences between Neanderthals and H. sapiens can be explained as a secondary consequence of the hyper-polar body proportions of the Neanderthals, but also as retentions of the primitive condition of other hominoids.

  1. 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.

  2. Abdominal compartment syndrome. Interesting aspects.

    Directory of Open Access Journals (Sweden)

    Nicolás Rubio Silveira

    2004-04-01

    Full Text Available The management of the abdominal compartiment syndrome is still a controversial point nowadays. Its early diagnosis and treatment constitute a challenge for surgeons and physicians at the intensive care unit who have to face these cases . The physiopathologic changes that can occur can lead to the patients death, constituting pulmonary thromboembolism and multiorgan failure the principal causes of death. This paper presents the principal clinical parameters and technical procedures for its diagnosis and treatment with the aim of diminishing its morbi-mortality raits in our hospitals

  3. Early diagnosis of carpal tunnel syndrome: comparison of digit 1 with wrist and distoproximal ratio.

    Science.gov (United States)

    Sharma, K R; Rotta, F; Romano, J; Ayyar, D R

    2001-01-01

    Our objective in this study was to compare the sensitivity and specificity of the median sensory nerve conduction velocity (SNCV) from digit 1 to wrist with those of the distoproximal (D/P) ratio of the median SNCV from palm to digit 3/palm to wrist in the diagnosis of mild carpal tunnel syndrome (CTS) by using a receiver operating characteristic (ROC) curve. To achieve this objective, we studied prospectively (January 1997-October 1998) 370 patients referred for CTS. One hundred forty-two patients (38.4%) with moderate to severe CTS and 15 patients (4.1%) with multiple (> or = 3) compressive neuropathies in upper limbs with subclinical peripheral neuropathy were excluded. The remaining 213 patients (302 hands with mild CTS; 167 women; mean age, 50 y +/- 12 y) and 38 controls (71 hands; 25 women; mean age, 47 y +/- 13 y) had median and ulnar nerve conduction studies. ROC curves were constructed for median SNCV digit 1 to wrist and median SNCV D/P ratio from the patients' and controls' data. The median SNCV at or = 1.12, corresponding to an optimal cutoff point on ROC curve, discriminated 67.2% of mild CTS from controls with specificity of 97.2%. Of the 10.3% (31/302) of hands in which digit 1 to wrist was within normal limits at the selected optimal cutoff value ( or = 1.12), and 3.3% (10/302) had a normal electrophysiologic examination. The likelihood ratio (true-positive ratio to false-positive ratio, assessing the discriminative power of a test) of the median SNCV digit 1 to wrist, at an optimal point on ROC curve (63.9), was higher than that of the median SNCV D/P ratio (23.9, chi2 = 36.9, P wrist is more sensitive than the median SNCV D/P ratio in the diagnosis of mild CTS.

  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

    2014-05-01

    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.

  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. 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.

  7. [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.

  8. Clinical profile of abdominal tuberculosis in children

    OpenAIRE

    Ira Shah; Ramya Uppuluri

    2010-01-01

    Aim: A retrospective study was conducted in children, suffering from abdominal TB, attending Pediatric TB clinic from 2007 to 2009. Materials And Methods: Age-wise distribution and type of abdominal TB were analyzed with clinical features. Results : Out of 285 children with TB, 32 (11.2%) had abdominal tuberculosis. Male: Female ratio was 2.1:1. 7 (21.9%) children were 10 years of age. The most comm...

  9. Abdominal Compartment Syndrome due to OHSS

    Directory of Open Access Journals (Sweden)

    Firoozeh Veisi

    2012-03-01

    Full Text Available Abdominal compartment syndrome is a dangerous clinical situation, usually following abdominal injuries&operations. It is seldom observed in patients with gynecologic and obstetric problems. Abdominalcompartment syndrome may be consequence ovarian hyperstimulation syndrome. A 28-year-old womanpresented as a sever ovarian hyperstimulation.The increased IAP indicated that OHSS may beconsidered a compartment syndrome. Abdominal compartment syndrome needs laparotomy orparacentesis for reduction of pressure.

  10. 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.

  11. Gyroscope vs. accelerometer measurements of motion from wrist PPG during physical exercise

    Directory of Open Access Journals (Sweden)

    Alexander J. Casson

    2016-12-01

    Full Text Available Many wearable devices include PPG (photoplethysmography sensors for non-invasive heart rate monitoring. However, PPG signals are heavily corrupted by motion interference, and rely on simultaneous motion measurements to remove the interference. Accelerometers are used commonly, but cannot differentiate between acceleration due to movement and acceleration due to gravity. This paper compares measurements of motion using accelerometers and gyroscopes to give a more complete estimate of wrist motion. Results show the two sensor signals are very different, with low correlations present. When used in a wrist PPG heart rate algorithm gyroscope motion estimates obtain better performance in half of the cases.

  12. 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...... by X-ray (Fractured radius = 12, fractures carpalbones = 3, bone bruise = 4, fractured scaphoid = 3, other pathology = 3, noappreciable disease = 15).   Discussion:The standard strategy for unraveling wrist injuries is by conventional X-ray.This approach is fast, economically feasible and is able...

  13. Fungal arthritis of the wrist caused by Candida parapsilosis during infliximab therapy for rheumatoid arthritis.

    Science.gov (United States)

    Miyamoto, Hideaki; Miura, Toshiki; Morita, Euan; Morizaki, Yutaka; Uehara, Kosuke; Ohe, Takashi; Tanaka, Sakae

    2012-11-01

    A 60-year-old woman with rheumatoid arthritis, who had been treated with infliximab, presented with uncontrollable wrist arthritis. Fungal arthritis caused by Candida parapsilosis was confirmed by examining her aspirated joint fluid. Her infliximab therapy was interrupted, and antifungal therapy with fluconazole was started. After the fungal infection had been ameliorated, surgical debridement and arthrodesis of the wrist joint were conducted, and her symptoms completely resolved. Although fungal arthritis is rare, it should be considered as a differential diagnosis of exacerbated monoarthritis in patients treated with biological agents.

  14. WRIST-ANKLE ACUPUNCTURE FOR ANALGESIA IN TREATING SOME COMMON DISEASES IN ATHLETES

    Institute of Scientific and Technical Information of China (English)

    JIANG Xin

    2006-01-01

    @@ With gradual generalization of acupuncture-moxibustion therapy in developed countries, an increasing attention has been paid to its application in the athletic field. Wrist-ankle acupuncture is a kind of shallow acupuncture, by which 6 points in the wrist and ankle regions are selected and punctured for treating diseases related to individual parts of the body. It is a kind of information therapy concerning biological hologram regularities. The analgesic effects of the therapy in treating some common diseases in 64 athletes are reported as follows.

  15. 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

    INTRODUCTION: Patient-rated outcome measures are frequently used to assess the results of total wrist arthroplasty, but their psychometric properties have not yet been evaluated in this group of patients. The purpose of our study was to assess the psychometric properties of the Danish Quick Disab...... funding agency in the public, commercial, or not-for-profit sectors. TRIAL REGISTRATION: not relevant....... patients scored significantly higher on the QuickDASH than other patients did. The scores of both questionnaires were very closely related. CONCLUSION: Both questionnaires are valid and equivalent for use in patients with total wrist arthroplasty. FUNDING: This research received no specific grant from any...

  16. 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.

  17. [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.

  18. A Conceptual Project of a Device for Human Wrist Functional Rehabilitation

    Science.gov (United States)

    Lewandowski, B.; Olinski, M.; Wudarczyk, S.; Gronowicz, A.

    2016-12-01

    In the paper, the problems of devices supporting functional rehabilitation of a human wrist were addressed. A literature review and a description of selected devices together with an indication of their advantages and disadvantages were conducted. The biomechanical structure of a human wrist was analyzed. On this basis and after taking into consideration ranges of motion of the selected joints the concept of a new mechanism was developed. A 3D model of the device was built in the Autodesk Inventor system. For the purpose of simulations another model was developed in the MSC Adams system. Issues of drives and sensors selection, as well as requirements for the control system, were examined.

  19. 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...... 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....

  20. The use of a pyrocarbon capitate resurfacing implant in chronic wrist disorders.

    Science.gov (United States)

    Marcuzzi, A; Ozben, H; Russomando, A

    2014-07-01

    The present study describes the technique and results of proximal row carpectomy with resection of the head of the capitate and replacement with a pyrocarbon capitate resurfacing implant. The major indication for surgical treatment was arthritic changes on the head of the capitate. Patients were assessed by range of motion, grip strength, pain and functional scoring, and radiographic studies. In most patients, wrist function was improved and pain relief was obtained. This surgical procedure may represent a good alternative to total and partial wrist arthrodesis.

  1. 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…

  2. 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.)

  3. Comparative Evaluation of the Efficacy of Hand-Wrist and Cervical Vertebrae Radiography for the Determination of Skeletal Age

    OpenAIRE

    Hoseini; Zamaheni; Bashizadeh Fakhar; Akbari; Chalipa; Rahmati

    2016-01-01

    Background Prediction of skeletal growth is necessary for growth modification and surgical orthodontic treatments and is usually done by assessing skeletal maturity indicators in hand-wrist radiographs. The use of growth stages of cervical vertebrae in lateral cephalograms has been suggested to avoid overexposure. Objectives This study seeks to assess the degree of agreement between hand-wrist and cervical vertebrae maturation sta...

  4. 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.

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

    NARCIS (Netherlands)

    Y. Wang (Yuexiang); C. Zhao; S.M. Passe (Sandra); A. Filius (Anika); A.R. Thoreson (Andrew); P. An (Ping); P.C. Amadio (Peter )

    2014-01-01

    textabstractThe 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 und

  6. 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

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

    NARCIS (Netherlands)

    Deijs, M; 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

  8. Abdominal Pain in the Geriatric Patient.

    Science.gov (United States)

    Magidson, Phillip D; Martinez, Joseph P

    2016-08-01

    With an aging population, emergency department clinicians can expect an increase in geriatric patients presenting with abdominal pain. Compared with younger patients, this patient population is less likely to present with classic symptoms, physical examination findings, and laboratory values of abdominal disease. However, the morbidity and mortality associated with elderly patients presenting with abdominal pathologic conditions are significant. For this reason, the clinician must be familiar with some subtle and not so subtle differences when caring for the geriatric patient with abdominal pain to ensure timely diagnosis and appropriate treatment.

  9. 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

  10. X-ray characteristics of wrists in calcium pyrophosphate crystal deposition disease. Is pseudogout a major cause of scapholunate advanced collapse?

    Science.gov (United States)

    Taniguchi, Y; Yoshida, M; Tamaki, T

    1997-10-01

    Deposition of calcium pyrophosphate dihydrate (CPPD) crystals has been considered to be a cause of scapholunate advanced collapse (SLAC) wrist. The aim of this study was to look at X-ray changes in wrist joints affected by CPPD crystal deposition disease and to determine whether crystal deposition is a cause of SLAC wrist. A total of 150 wrists of 78 patients with CPPD crystal deposition disease were examined. In our population of Japanese patients with CPPD crystal deposition disease, the incidence of SLAC wrist was very low, and no case of Stage III SLAC wrist was found. We therefore conclude that SLAC wrist is not a radiographic characteristic of CPPD crystal deposition disease and that pyrophosphate crystal deposition cannot be a major cause of SLAC wrist.

  11. Elderly kendo (Japanese fencing) player with Kienböck's disease in one wrist and Preiser's disease in the other wrist: a case report.

    Science.gov (United States)

    Iwasaki, Norimasa; Masuko, Tatsuya; Funakoshi, Tadanao; Minami, Akio

    2010-01-01

    Elderly patients suffering from avascular necrosis of a carpal bone in both wrists are extremely rare. We report a case of an elderly kendo (Japanese fencing) competitor who sustained Preiser's disease in the left hand following the occurrence of Kienböck's disease in the right hand. The current case demonstrates the importance of raising awareness of these diseases as potential sports-related problems in the elderly.

  12. Percutaneous drainage of abdominal abcess

    Energy Technology Data Exchange (ETDEWEB)

    Men, Sueleyman E-mail: suleyman.men@deu.edu.tr; Akhan, Okan; Koeroglu, Mert

    2002-09-01

    The mortality in undrained abdominal abscesses is high with a mortality rate ranging between 45 and 100%. The outcome in abdominal abscesses, however, has improved due to advances in image guided percutaneous interventional techniques. The main indications for the catheter drainage include treatment or palliation of sepsis associated with an infected fluid collection, and alleviation of the symptoms that may be caused by fluid collections by virtue of their size, like pancreatic pseudocele or lymphocele. The single liver abscesses may be drained with ultrasound guidance only, whereas the multiple abscesses usually require computed tomography (CT) guidance and placement of multiple catheters. The pancreatic abscesses are generally drained routinely and urgently. Non-infected pancreatic pseudocysts may be simply observed unless they are symptomatic or cause problems such as pain or obstruction of the biliary or the gastrointestinal tract. Percutaneous routes that have been described to drain pelvic abscesses include transrectal or transvaginal approach with sonographic guidance, a transgluteal, paracoccygeal-infragluteal, or perineal approach through the greater sciatic foramen with CT guidance. Both the renal and the perirenal abscesses are amenable to percutaneous drainage. Percutaneous drainage provides an effective and safe alternative to more invasive surgical drainage in most patients with psoas abscesses as well.

  13. 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.)

  14. 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.

  15. Arménie

    Directory of Open Access Journals (Sweden)

    François Verdier

    2012-04-01

    Full Text Available L’Arménie est une petite république du Caucase, à la limite sud–est de l’Europe, qui a gagné son autonomie en 1990 après l’ouverture du bloc soviétique. Le nouveau Ministère du Patrimoine a sollicité la coopération de la France pour mettre en place une nouvelle politique culturelle. Tout d’abord, une évaluation sur place de la situation dans les domaines des monuments historiques, de l’archéologie et de l’Inventaire a permis d’envisager les réponses à proposer. Pour la demande d’informatisation des dossiers d’inventaire déjà réalisés sous l’autorité de l’Académie de Saint–Petersbourg, nous avons proposé de former des chercheurs arméniens aux méthodes et techniques de l’Inventaire général. L’accueil d’une stagiaire pendant trois mois au service régional de l’Inventaire de Haute–Normandie a été suivi par la mise en place d’un équipement informatique à Yérévan, puis par l’accueil et la formation de techniciens informaticiens et photographes arméniens. De retour dans leur pays ils ont commencé à remettre en place un service d’inventaire dont le programme comprend la création d’une base de données patrimoniales, le recensement de la ville de Yérévan, la numérisation d’images pour la publication d’un indicateur du patrimoine et la préparation de dossiers de protection au titre du patrimoine mondial.The Armenian heritage comprises both archaeological remains of towns destroyed by never–ending wars and a number of old churches from the eleventh and twelfth centuries. Yerevan, the capital of Armenia, was founded three thousand years ago and is one of Europe’s oldest capitals. From 1925 it has developed according to an ambitious urban planning project. After the major political upheavals of 1991, a special ministry was created to look after the architectural and movable heritage of the country and to promote the Armenian national identity. A mission in Yerevan was

  16. 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

  17. Mesh repair of hernias of the abdominal wall

    NARCIS (Netherlands)

    W.W. Vrijland (Wietske)

    2003-01-01

    textabstractA hernia of the abdominal wall is a permanent or intermittent protrusion of abdominal contents outside the abdominal cavity through a defect in the abdominal wall. Approximately 75% of all hernias occur in the inguinal region. Other types of hernias of the ventral abdominal wall are inci

  18. ARM Soc Based Enotebook

    Directory of Open Access Journals (Sweden)

    Pranita C Bawankar

    2014-05-01

    Full Text Available In recent years, electronic media has grown very fast replacing papers, tape devices, books, etc. The new technologies provide large number of data into single device, fast searching options and more readability than ever. As eBooks are replacing books; we are proposing ENotebook system in which user can write as he did in notebook, save, searches and then reread content. This paper presents design and development of ENotebook using ARM7. The system uses touch screen to get input data and operations like save, delete, open & close of data file. All data sensed by touch screen is digitized by internal ADCs of LPC2148 microcontroller which gives low power platform with fast execution. The output is shown on graphical LCD. Whatever user writes on screen it may need to save for future use. The content of such hand written data will be in graphical/pictorial form hence required large of memory for storage. We can provide external memory using pen drive, memory card, EEPROM etc. in this system we are using SD card interfacing through SPI port.

  19. An examination of the vibration transmissibility of the hand-arm system in three orthogonal directions.

    Science.gov (United States)

    Welcome, Daniel E; Dong, Ren G; Xu, Xueyan S; Warren, Christopher; McDowell, Thomas W; Wu, John Z

    2015-02-01

    The objective of this study is to enhance the understanding of the vibration transmission in the hand-arm system in three orthogonal directions (X, Y, and Z). For the first time, the transmitted vibrations distributed on the entire hand-arm system exposed in the three orthogonal directions via a 3-D vibration test system were measured using a 3-D laser vibrometer. Seven adult male subjects participated in the experiment. This study confirms that the vibration transmissibility generally decreased with the increase in distance from the hand and it varied with the vibration direction. Specifically, to the upper arm and shoulder, only moderate vibration transmission was measured in the test frequency range (16 to 500 Hz), and virtually no transmission was measured in the frequency range higher than 50 Hz. The resonance vibration on the forearm was primarily in the range of 16-30 Hz with the peak amplitude of approximately 1.5 times of the input vibration amplitude. The major resonance on the dorsal surfaces of the hand and wrist occurred at around 30-40 Hz and, in the Y direction, with peak amplitude of more than 2.5 times of the input amplitude. At higher than 50 Hz, vibration transmission was effectively limited to the hand and fingers. A major finger resonance was observed at around 100 Hz in the X and Y directions and around 200 Hz in the Z direction. In the fingers, the resonance magnitude in the Z direction was generally the lowest, and the resonance magnitude in the Y direction was generally the highest with the resonance amplitude of 3 times the input vibration, which was similar to the transmissibility at the wrist and hand dorsum. The implications of the results are discussed.

  20. ARM Lead Mentor Selection Process

    Energy Technology Data Exchange (ETDEWEB)

    Sisterson, DL

    2013-03-13

    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 Instrument Mentors. Instrument 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 also possess the technical and analytical skills to develop new data retrievals that provide innovative approaches for creating research-quality data sets.

  1. Taxation, stateness and armed groups

    DEFF Research Database (Denmark)

    Hoffmann, Kasper; Vlassenroot, Koen; Marchais, Gauthier

    2016-01-01

    rackets, to the material reciprocation of the recognition of rights. Focusing on the taxation practices of armed groups, the article argues that taxation is at the core of armed groups’ production of public authority and citizenship, and that their modes of taxation are based on long-standing registers...... of authority and practices of rule that originate in the colonial era. In particular, the article shows that by appealing to both local customary and national forms of political community and citizenship, armed groups are able to assume public authority to tax civilians. However, their public authority may...

  2. 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)....

  3. Central nervous adaptations following 1 week of wrist and hand immobilization

    DEFF Research Database (Denmark)

    Lundbye-Jensen, Jesper; Nielsen, Jens Bo

    2008-01-01

    in relation to one week of immobilization of the non-dominant wrist and hand and a corresponding period of recovery in 10 able-bodied volunteers. Following immobilization maximal voluntary contraction torque (MVC) decreased and the variability of submaximal static contractions increased significantly without...

  4. Tactile spatial acuity is reduced by skin stretch at the human wrist.

    Science.gov (United States)

    Cody, Frederick W J; Idrees, Raheel; Spilioti, Diamantina X; Poliakoff, Ellen

    2010-10-22

    The skin is an elastic organ that is continuously distorted as our limbs move. The hypothesis that the precision of human tactile localisation is reduced when the skin is stretched, with concurrent expansion of receptive fields (RFs) was tested. Locognosic acuity over the dorsal wrist area was quantified during application of background stretch by (a) Wrist-Bend (skin stretch combined with non-cutaneous proprioceptor activation) and (b) Skin-Pull (skin stretch alone). Participants identified the perceived direction (distal or proximal) of brief test stimuli, applied along a 7-point linear array, relative to a central reference locus. Performance was significantly reduced during the large amplitude compared to the small amplitude of tonic skin stretch, but there was no effect of stretch mode (Wrist-Bend, Skin-Pull), nor was the effect of stretch amplitude modulated by the mode of stretch. Locognosic acuity was poorer than baseline accuracy for the large amplitude skin stretches, for both application modes, but did not differ significantly from baseline for either of the small amplitude stretches. We interpret these observations as corroborating the long-held assumption that tactile localisation is primarily dependent upon the RF dimensions, and associated innervation densities, of regional touch units. The finding that performance was reduced to a similar extent under Skin-Pull and Wrist-Bend conditions suggests that non-cutaneous proprioceptors had rather little tonic modulatory effect.

  5. Eccentric wrist extensor contractions and the force velocity relationship in muscle.

    Science.gov (United States)

    Walmsley, R P; Pearson, N; Stymiest, P

    1986-01-01

    The torque produced by the wrist extensors during maximal isometric and isokinetic eccentric contractions has been investigated. The torque produced by eccentric contractions was measured at three different velocities: 0.36, 0.93, and 1.64 cmlsec. The speeds of contraction were generated by a specially designed apparatus, consisting of a gear drive and an electric motor that would maintain its speed irrespective of the load applied. Tenison produced by the wrist extensors was measured using a load cell. The results indicated that eccentric contractions of the wrist extensors exceed those produced by isometric contractions. The force-velocity relationship during eccentric contractions was determined to be different from that during concentric contractions. Force values were found to increase as the velocity of eccentric contraction increased. No signficant effect of wrist joint angle on torque values was found, nor was there an interaction effect of velocity and joint angle. The implications for rehabilitation of these findings are outlined. J Orthop Sports Phys Ther 1986;8(6):288-293.

  6. ТREATMENT STRATEGY OF FLEXION CONTRACTURE OF THE WRIST JOINT IN CHILDREN WITH CEREBRAL PALSY

    Directory of Open Access Journals (Sweden)

    Владимир Александрович Новиков

    2014-09-01

    Full Text Available Objectives. The objective of study was to assess the effectiveness of transplantation of m. flexor carpi ulnaris tendon on the place of m. extensor carpi radialis brevis / longus (Green operation to eliminate the deficit of active wrist joint extension in children with cerebral palsy. Materials and methods. The present study is based on a survey of children with cerebral palsy with affected upper limb. The main criterion for selection of patients was the presence of active extension deficit in the wrist joint, both isolated and in combination with other contractures of the upper limb joints. Total 22 patients with spastic forms of cerebral palsy were examined. Results and conclusions. Green operation is a good method of surgical treatment of active extension deficit in the wrist joint in patients with cerebral palsy. In the presence of moderately severe contractures in the wrist joint, serial casting can eliminate them completely. Presence of a fixed pronation contracture of the forearm is a factor that reduces the effectiveness of FCU transplantation. Pronation contracture should be corrected before or during Green surgery. FCU transplantation is effective for children of any age, but its effectiveness is reduced from 12 years old.

  7. Usefulness of absorbable screws in the Sauvé-Kapandji procedure for rheumatoid wrist reconstruction.

    Science.gov (United States)

    Nakamura, K; Oda, H; Tanaka, S; Kuga, Y; Yamamoto, M; Nishikawa, T; Juji, T; Shimizu, M

    2002-06-01

    Abstract  In the Sauvé-Kapandji (S-K) procedure for rheumatoid wrist reconstruction, the distal end of the ulna is fixed to the radius with screws. Recently, absorbable screws have increasingly been used instead of metal ones. However, the clinical usefulness of absorbable screws in S-K procedures for rheumatoid patients is still unknown. The purpose of this article is to evaluate the effect of absorbable screws in this procedure by comparing their clinical results with those of metal screws. Poly-l-lactic acid (PLLA) absorbable screws were used in 23 wrists, and metal screws were used in 20 wrists. We evaluated the presence of general or local reactions to PLLA, the stability of the ulnar head, the time to bone union, changes in the shape of the distal ulna, and the presence of bone resorption around the screws. There were no complications with the use of PLLA screws, and their fixation stability was adequate to form sufficient bone union. In five cases in the metal screw group, bone resorption around the screws occurred between 1 and 2 years after surgery. Bone resorption around the PLLA screws was not observed. We conclude that absorbable screws may be more useful than metal screws in the S-K procedure for rheumatoid wrist reconstruction.

  8. 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

  9. 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...

  10. 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.)

  11. 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.

  12. 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.)

  13. Pisotriquetral joint disorders: an under-recognized cause of ulnar side wrist pain.

    Science.gov (United States)

    Moraux, A; Lefebvre, G; Pansini, V; Aucourt, J; Vandenbussche, L; Demondion, X; Cotten, A

    2014-06-01

    Pisotriquetral joint disorders are often under-recognized in routine clinical practice. They nevertheless represent a significant cause of ulnar side wrist pain. The aim of this article is to present the main disorders of this joint and discuss the different imaging modalities that can be useful for its assessment.

  14. Pisotriquetral joint disorders: an under-recognized cause of ulnar side wrist pain

    Energy Technology Data Exchange (ETDEWEB)

    Moraux, A. [Hopital Roger Salengro, Service d' Imagerie Musculo-Squelettique, Centre de Consultation de l' Appareil Locomoteur, CHRU Lille (France); Imagerie Medicale Jacquemars Gielee, Lille (France); Lefebvre, G.; Pansini, V.; Aucourt, J.; Vandenbussche, L.; Cotten, A. [Hopital Roger Salengro, Service d' Imagerie Musculo-Squelettique, Centre de Consultation de l' Appareil Locomoteur, CHRU Lille (France); Demondion, X. [Hopital Roger Salengro, Service d' Imagerie Musculo-Squelettique, Centre de Consultation de l' Appareil Locomoteur, CHRU Lille (France); Pole Recherche Faculte de Medecine de Lille, Laboratoire d' Anatomie, Lille (France)

    2014-06-15

    Pisotriquetral joint disorders are often under-recognized in routine clinical practice. They nevertheless represent a significant cause of ulnar side wrist pain. The aim of this article is to present the main disorders of this joint and discuss the different imaging modalities that can be useful for its assessment. (orig.)

  15. 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...

  16. 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

  17. Abnormal surface EMG during clinically normal wrist movement in cervical dystonia

    NARCIS (Netherlands)

    de Vries, P. M.; Leenders, K. L.; van der Hoeven, J. H.; de Jong, B. M.; Kuiper, A. J.; Maurits, N. M.

    2007-01-01

    We investigated whether patients with cervical dystonia (CD) have abnormal muscle activation in non-dystonic body parts. Eight healthy controls and eight CD patients performed a flexion-extension movement of the right wrist. Movement execution was recorded by surface electromyography (EMG) from fore

  18. 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.

  19. 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.

  20. Dynamic sonographic measurements at the carpal tunnel inlet: Reliability and reference values in healthy wrists

    NARCIS (Netherlands)

    A. Filius (Anika); J.-W.H. Korstanje (Jan-Wiebe); R.W. Selles (Ruud); S.E.R. Hovius (Steven); H.P. Slijper

    2013-01-01

    textabstractIntroduction: Reliability and reference values are not well-established for most dynamic sonographic measurements of the median nerve (MN) and flexor tendons that may be used for diagnosing carpal tunnel syndrome (CTS). Methods: Wrists of 20 healthy participants were imaged using ultraso

  1. A radiographic evaluation of temporomandibular and hand (Metacarpophalangeal / wrist joints of patients with adult rheumatoid arthritis

    Directory of Open Access Journals (Sweden)

    Seema Kurup

    2012-01-01

    Conclusions: Although the TMJ showed osseous changes of a higher grade than the hand (MCP and wrist joints radiographically, it was observed that patients were more aware of the peripheral joint discomfort. There were no significant differences between TMJ and peripheral joints on both right and left sides.

  2. Well Leg Compartment Syndrome After Abdominal Surgery

    DEFF Research Database (Denmark)

    Christoffersen, Jens Krogh; Hove, Lars Dahlgaard; Mikkelsen, Kim Lyngby;

    2016-01-01

    BACKGROUND: Well leg compartment syndrome (WLCS) is a complication to abdominal surgery. We aimed to identify risk factors for and outcome of WLCS in Denmark and literature. METHODS: Prospectively collected claims to the Danish Patient Compensation Association (DPCA) concerning WLCS after abdominal...

  3. 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...

  4. 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

  5. ABDOMINAL WALL DESMOID TUMOUR OVER APPENDICECTOMY SCAR

    OpenAIRE

    Vijaya; Sarbeshwar; Gogoi

    2015-01-01

    BACKGROUND: Desmoid tumors are slow growing deep fibromatoses with aggressive infiltration of adjacent tissue but without any metastatic potential . (1,2,3) CASE PRESENTATION: We report a female patient with desmoid tumor of the abdominal wall over appendicectomy scar w ho underwent primary resection. Preoperative evaluation incl uded abdominal ultrasound, and computed tomography. The histology of this cases revealed a desmoid tumor. CONCLUSION: ...

  6. Radiation exposure in stent-grafting of abdominal aortic aneurysms.

    Science.gov (United States)

    Geijer, H; Larzon, T; Popek, R; Beckman, K-W

    2005-10-01

    In recent years, endovascular stent-grafting of abdominal aortic aneurysms has become more and more common. The radiation dose associated with these procedures is not well documented however. The aim of the present study was to estimate the radiation exposure and to simulate the effects of a switch from C-arm radiographic equipment to a dedicated angiographic suite. Dose-area product (DAP) was recorded for 24 aortic stent-grafting procedures. Based on these data, entrance surface dose (ESD) and effective dose were calculated. A simulation of doses at various settings was also performed using a humanoid Alderson phantom. The image quality was evaluated with a CDRAD contrast-detail phantom. The mean DAP was 72.3 Gy cm(2) at 28 min fluoroscopy time with a mean ESD of 0.39 Gy and a mean effective dose of 10.5 mSv. If the procedures had been performed in an angiographic suite, all dose values would be much higher with a mean ESD of 2.9 Gy with 16 patients exceeding 2 Gy, which is considered to be a threshold for possible skin injury. The image quality for fluoroscopy was superior for the C-arm whilst the angiographic unit gave better acquisition images. Using a C-arm unit resulted in doses similar to percutaneous coronary intervention (PCI). If the same patients had been treated using dedicated angiographic equipment, the risk of skin injury would be much higher. It is thus important to be aware of the dose output of the equipment that is used.

  7. Kashin-Beck disease in children: radiographic findings in the wrist

    Energy Technology Data Exchange (ETDEWEB)

    Yu, W. [Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing (China); Department of Radiology, Musculoskeletal Section and Osteoporosis and Arthritis Research Group, University of California, San Francisco, CA (United States); Wang, Y. [Beijing Ji Shui Tan Hospital, Institute of Traumatology and Orthopaedics, Beijing (China); Jiang, Y.; Cheng, X. [Beijing Ji Shui Tan Hospital, Institute of Traumatology and Orthopaedics, Beijing (China); Wang, L.; Genant, H.K. [Department of Radiology, Musculoskeletal Section and Osteoporosis and Arthritis Research Group, University of California, San Francisco, CA (United States)

    2002-04-01

    Objective: To characterize the features and prevalence of radiographic abnormalities of the wrist in children with Kashin-Beck disease (KBD) and to determine whether the presence of radiographic abnormalities in the wrist correlates with the severity of KBD. Design and patients: Two hundred and eight posteroanterior radiographs of the right hand (including wrist) in children with KBD, ranging in age from 4 to 11 years (mean age 7.7 years), from endemic areas of China were reviewed. Carpal bony margins were evaluated for blurring, thinning, irregularity with and without sclerosis, interruption, depression or destruction. The radiocarpal, intercarpal and carpometacarpal joints were assessed for widening or narrowing. The severity of the disease was graded using the hand criteria from the Chinese Radiographic Criteria of KBD Diagnosis, which classifies the following five types according to the location of the hand involved: I, metaphysis; II, diaphysis; III, I+II; IV, metaphysis and epiphysis; V, II+IV. Results: Of the 208 children, 95 had abnormalities in the hand but not in the wrist; 108 had both hand and wrist abnormalities; only five had abnormal wrist findings without any hand abnormalities. Of the 108 cases with wrist abnormalities, all the carpal bones were involved in 33 cases, of which the hand types were either IV or V. However, any individual carpal bone, or combination of bones, may become involved. The carpal bones most likely to show abnormalities were the capitate and the hamate (93%), followed by the triquetrum (31%), the lunate (9%), the scaphoid (6%), and the trapezoid and the trapezium (5%). The pisiform bones were not evaluated because they cannot be seen on the overlapping posteroanterior radiographs. The most commonly involved carpal joint was the midcarpal joint (42%). Conclusions: Recognizing carpal abnormalities on radiographs is helpful for the diagnosis of KBD and the evaluation of the severity of the disease. The more severe the KBD, the

  8. 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

  9. 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.

  10. Pulmonary complications of abdominal wall defects.

    Science.gov (United States)

    Panitch, Howard B

    2015-01-01

    The abdominal wall is an integral component of the chest wall. Defects in the ventral abdominal wall alter respiratory mechanics and can impair diaphragm function. Congenital abdominal wall defects also are associated with abnormalities in lung growth and development that lead to pulmonary hypoplasia, pulmonary hypertension, and alterations in thoracic cage formation. Although infants with ventral abdominal wall defects can experience life-threatening pulmonary complications, older children typically experience a more benign respiratory course. Studies of lung and chest wall function in older children and adolescents with congenital abdominal wall defects are few; such investigations could provide strategies for improved respiratory performance, avoidance of respiratory morbidity, and enhanced exercise ability for these children.

  11. Abdominal ultrasonography in the diagnostic work-up in children with recurrent abdominal pain

    DEFF Research Database (Denmark)

    Wewer, Anne Vibeke; Strandberg, C; Pærregaard, Anders;

    1997-01-01

    We report on our experience with routine abdominal ultrasonography in 120 children (aged 3-15 years) with recurrent abdominal pain, in order to determine the diagnostic value of this investigation. Eight children (7%) revealed sonographic abnormalities: gallbladder stone (n = 2), splenomegaly (n...... = 1) and urogenital abnormalities (n = 5). The recurrent abdominal pain could be explained by these findings in only two (may be three) cases. CONCLUSION: The diagnostic value of abdominal ultrasonography in unselected children with recurrent abdominal pain is low. However, the direct visualization...... of the abdominal structures as being normal may be helpful to the parents and the child in their understanding and acceptance of the benign nature of recurrent abdominal pain....

  12. EFFECTS OF WRIST WEIGHING IN REDUCING UPPER LIMB TREMORS IN PATIENTS WITH CEREBELLAR LESIONS

    Directory of Open Access Journals (Sweden)

    Vishnu Priya

    2015-08-01

    Full Text Available Background: An intentional tremor is one of the most untreated causes in patients with cerebellar ataxia. Upper limb tremors decreases the performance of many activities of daily life Thus treatment of patients with tremor probably implies better functional ability. It is one of the major areas of concern to improve functional independence hence, this study proposed to know the effects of wrist weighing in reducing upper limb tremors in cerebellar injury patients. Materials and Methods: A total number of 21 patients with various abnormalities of cerebellum were selected depending on selection criteria. These patients were randomly divided into two groups. One group was treated with wrist weighing by using Velcro weight cuffs for 15 minutes along with conventional physiotherapy for 5 days a week for 2 months & other group is treated with conventional physiotherapy for 5 days in a week for 2 months. The objectives were tested by using tremor rating scale and nine hole peg test. The values are collected before and after the treatment Results: In the group treated with wrist weighing the improvement in the tremor rating scale is very significant (p: 0.0001 and in nine hole peg test is extremely significant (p: 0.0001. In conventional therapy group the improvement in the tremor rating scale is not significant (p: 0.0051 and in nine hole peg test is very significant (p: 0.0002. Conclusion: Incorporation of wrist weighing along with conventional therapy reduced the intensity of upper limb tremors in patients with cerebellar injuries but both the treatments are effective in improving upper limb functions. KEY WORDS: Intentional tremor, Rehabilitation, Wrist weighing

  13. Separating bedtime rest from activity using waist or wrist-worn accelerometers in youth.

    Science.gov (United States)

    Tracy, Dustin J; Xu, Zhiyi; Choi, Leena; Acra, Sari; Chen, Kong Y; Buchowski, Maciej S

    2014-01-01

    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 prest from activity in youth.

  14. 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.

  15. Tissue Deformation Index as a Reliable Measure of Lateral Abdominal Muscle Activation on M-Mode Sonography.

    Science.gov (United States)

    Biały, Maciej; Adamczyk, Wacław; Gnat, Rafael; Stranc, Tomasz

    2017-03-24

    The aim of this article is to present a novel method of evaluating the activity of lateral abdominal muscles using M-mode sonography. The method leads to calculation of the tissue deformation index, representing the percent change in lateral abdominal muscle thickness over time. The objectives of this study were as follows: (1) to establish the mean tissue deformation index values for individual lateral abdominal muscles; and (2) to establish the reliability of the tissue deformation index. In a group of 34 healthy young volunteers (mean age, 24.03 years; body mass, 68.89 kg; body height, 174.25 cm), the reflex response of the lateral abdominal muscles to postural perturbation in the form of rapid arm abduction was recorded in 2 series, with 6 repetitions each, and the tissue deformation index was calculated. The mean tissue deformation index values formed a gradient, increasing from deep to superficial lateral abdominal muscles: 0.06%/ms for transversus abdominis, 0.11%/ms for oblique internal, and 0.16 for oblique external muscles. The tissue deformation index values differed significantly among individual lateral abdominal muscles (all paired comparisons, P  0.8).

  16. Compressive neuropathies of the ulnar nerve at the elbow and wrist.

    Science.gov (United States)

    Posner, M A

    2000-01-01

    Compressive neuropathy of the ulnar nerve in the upper limb is a common problem that frequently results in severe disabilities. At the elbow, Lundborg concluded that the nerve was "asking for trouble" because of its anatomic course through confined spaces and posterior to the axis of elbow flexion. Normally, the ulnar nerve is subjected to stretch and compression forces that are moderated by its ability to glide in its anatomic path around the elbow. When normal excursion is restricted, irritation ensues. This results in a cycle of perineural scarring, further loss of excursion, and progressive nerve damage. Initial treatment for the acute and subacute neuropathy at the elbow is nonsurgical. Rest and avoiding pressure on the nerve may suffice, but if symptoms persist, splint immobilization of the elbow and wrist is warranted. For chronic neuropathy associated with muscle weakness, or neuropathy that does not respond to conservative measures, surgery is usually necessary. A variety of surgical procedures have been described in the medical literature, and deciding on the most effective procedure can be difficult considering the excellent results claimed by proponents for each. Unfortunately, there is a paucity of information based on prospective randomized clinical studies comparing the different surgical methods. Dellon attempted to provide some guidelines by reviewing the data in 50 articles dealing with nonsurgical and surgical treatment of ulnar neuropathies at the elbow. In order to provide uniform data, he re-interpreted the data in these articles using his own system for staging nerve compression. He reported that treatment was most successful for mild neuropathies, a conclusion few would challenge. Excellent results were also achieved in 50% of patients with mild neuropathies that were treated nonsurgically and in more than 90% treated by surgery, regardless of the procedure. For moderate neuropathies, nonsurgical treatment was generally unsuccessful, as were

  17. Mesh repair of hernias of the abdominal wall

    OpenAIRE

    2003-01-01

    textabstractA hernia of the abdominal wall is a permanent or intermittent protrusion of abdominal contents outside the abdominal cavity through a defect in the abdominal wall. Approximately 75% of all hernias occur in the inguinal region. Other types of hernias of the ventral abdominal wall are incisional, umbilical, epigastric and Spigelian hernia. In chapter 1 an overview of hernias of the abdominal wall is described. The incidence, clinical implications and treatment options and their comp...

  18. 3D motion analysis comparison of left handers' wrist flexion and cutting accuracy according to scissors type.

    Science.gov (United States)

    Park, Joo-Young; Park, Soohee

    2015-03-01

    [Purpose] The purpose of this study was to research the difference in wrist flexion and accuracy of left-handers when using regular scissors made for right-handed persons versus scissors made for left-handers. [Subjects and Methods] Eighteen left-handers participated in the experiment. There were ten males and eight females subjects. The degree of wrist flexion of 18 left-handers was analyzed when using scissors designed for left-handers and when using scissors designed for right-handers. [Results] When left-handers used left-handed scissors, they carried out the task while extending the wrist at 4.67±14.60°, but when they used right-handed scissors, they carried out the task while flexing the wrist at 1.19±12.41°. When left-handers used left-handed scissors, the error rate was 1.39±1.29 times on average, but when they used right-handed scissors, the rate was 0.72±0.67 times on average. [Conclusion] When left-hand dominant persons used left-handed scissors rather than right-handed scissors, the degree of wrist flexion decreased, which created more functionality, and the accuracy of the cutting increased. For improved cutting accuracy and wrist stability and to protect the wrist from extensive flexion, it is necessary for left-handers to use scissors that are made for left-handed people.

  19. 3D motion analysis comparison of left handers’ wrist flexion and cutting accuracy according to scissors type

    Science.gov (United States)

    Park, Joo-Young; Park, Soohee

    2015-01-01

    [Purpose] The purpose of this study was to research the difference in wrist flexion and accuracy of left-handers when using regular scissors made for right-handed persons versus scissors made for left-handers. [Subjects and Methods] Eighteen left-handers participated in the experiment. There were ten males and eight females subjects. The degree of wrist flexion of 18 left-handers was analyzed when using scissors designed for left-handers and when using scissors designed for right-handers. [Results] When left-handers used left-handed scissors, they carried out the task while extending the wrist at 4.67±14.60°, but when they used right-handed scissors, they carried out the task while flexing the wrist at 1.19±12.41°. When left-handers used left-handed scissors, the error rate was 1.39±1.29 times on average, but when they used right-handed scissors, the rate was 0.72±0.67 times on average. [Conclusion] When left-hand dominant persons used left-handed scissors rather than right-handed scissors, the degree of wrist flexion decreased, which created more functionality, and the accuracy of the cutting increased. For improved cutting accuracy and wrist stability and to protect the wrist from extensive flexion, it is necessary for left-handers to use scissors that are made for left-handed people. PMID:25931762

  20. 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.)

  1. Bistable Head Positioning Arm Latch

    Science.gov (United States)

    Wasson, Ken; Endo, Juro; Mita, Masahiro; Abelein, Nathan

    A simple, low cost, yet effective device has been developed for immobilizing the head-arm assembly in a disk drive or similar mechanism during power-off conditions. The latching scheme also provides a consistent means of releasing the head-arm assembly from the immobilized position upon power up of the disk drive. The latch uses no electrical power in either immobilized or released state. This design is immune to extreme torque and linear shock forces applied to the disk drive case. The latch system can use the energy stored in the spinning disks to drive the head-arm assembly toward a safe position while simultaneously arming the latch mechanism to secure the head-arm assembly in the safe position upon arrival. A low energy five msec pulse of current drives the latch from one state to the other. Solenoids as presently used in latch mechanisms are bulky, expensive, have variable force characteristics, and often generate contaminants. The latch described in this paper is expected to replace such solenoids. It may also replace small magnet latches, which have limited latch force and apply unwanted torque to a proximate head positioning arm.

  2. Unequal-Arms Michelson Interferometers

    Science.gov (United States)

    Tinto, Massimo; Armstrong, J. W.

    2000-01-01

    Michelson interferometers allow phase measurements many orders of magnitude below the phase stability of the laser light injected into their two almost equal-length arms. If, however, the two arms are unequal, the laser fluctuations can not be removed by simply recombining the two beams. This is because the laser jitters experience different time delays in the two arms, and therefore can not cancel at the photo detector. We present here a method for achieving exact laser noise cancellation, even in an unequal-arm interferometer. The method presented in this paper requires a separate readout of the relative phase in each arm, made by interfering the returning beam in each arm with a fraction of the outgoing beam. By linearly combining the two data sets with themselves, after they have been properly time shifted, we show that it is possible to construct a new data set that is free of laser fluctuations. An application of this technique to future planned space-based laser interferometer detector3 of gravitational radiation is discussed.

  3. The morphological basis of the arm-to-wing transition.

    Science.gov (United States)

    Poore, Samuel O

    2008-02-01

    Human-powered flight has fascinated scientists, artists, and physicians for centuries. This history includes Abbas Ibn Firnas, a Spanish inventor who attempted the first well-documented human flight; Leonardo da Vinci and his flying machines; the Turkish inventor Hezarfen Ahmed Celebi; and the modern aeronautical pioneer Otto Lilienthal. These historic figures held in common their attempts to construct wings from man-made materials, and though their human-powered attempts at flight never came to fruition, the ideas and creative elements contained within their flying machines were essential to modern aeronautics. Since the time of these early pioneers, flight has continued to captivate humans, and recently, in a departure from creating wings from artificial elements, there has been discussion of using reconstructive surgery to fabricate human wings from human arms. This article is a descriptive study of how one might attempt such a reconstruction and in doing so calls upon essential evidence in the evolution of flight, an understanding of which is paramount to constructing human wings from arms. This includes a brief analysis and exploration of the anatomy of the 150-million-year-old fossil Archaeopteryx lithographica, with particular emphasis on the skeletal organization of this primitive bird's wing and wrist. Additionally, certain elements of the reconstruction must be drawn from an analysis of modern birds including a description of the specialized shoulder of the European starling, Sturnus vulgaris. With this anatomic description in tow, basic calculations regarding wing loading and allometry suggest that human wings would likely be nonfunctional. However, with the proper reconstructive balance between primitive (Archaeopteryx) and modern (Sturnus), and in attempting to integrate a careful analysis of bird anatomy with modern surgical techniques, the newly constructed human wings could function as cosmetic features simulating, for example, the nonfunctional

  4. Radiologic findings of abdominal wall endometriosis

    Energy Technology Data Exchange (ETDEWEB)

    Seo, Jung Wook [Inje Univ. Ilsan Paik Hospital, Goyang (Korea, Republic of)

    2003-12-01

    To evaluate the imaging findings of abdominal wall endometriosis. In seven of 17 patients with surgically proven endometriosis of the abdominal wall, we retrospectively reviewed the findings of radiologic studies such as abdominal US (n=3), CT (n=4), and MRI (n=1). One patient under went more than one type of imaging, apparently. The surgical history of the seven, and their symptoms and preoperative diagnosis were reviewed, and the size, location, margin and nature of the mass, and the contrast enhancement patterns observed at radiologic studies, were assessed. The chief symptoms were palpable abdominal wall mass (n=5) and lower abdominal pain (n=2) around a surgical scar. Previous surgery included cesarean section (n=5), cesarean section with oophorectomy (n=1) and appendectomy (n=1). Masses were located in the subcutaneous fat layer (n=5) or rectus abdominis muscle (n=2), and their maximum diameter was 2.6 cm. Imaging findings, which correlated closely with the pathologic findings, included a well (n=5) or poorly marginated (n=2) solid mass, with a focal cystic area apparent in two cases. Although imaging findings of abdominal wall endometriosis may not be specific for diagnosis, the presence of a solid abdominal mass in female patients of reproductive age with a history of surgery is a diagnostic pointer.

  5. Traumatic abdominal hernia complicated by necrotizing fasciitis.

    Science.gov (United States)

    Martínez-Pérez, Aleix; Garrigós-Ortega, Gonzalo; Gómez-Abril, Segundo Ángel; Martí-Martínez, Eva; Torres-Sánchez, Teresa

    2014-11-01

    Necrotizing fasciitis is a critical illness involving skin and soft tissues, which may develop after blunt abdominal trauma causing abdominal wall hernia and representing a great challenge for physicians. A 52-year-old man was brought to the emergency department after a road accident, presenting blunt abdominal trauma with a large non-reducible mass in the lower-right abdomen. A first, CT showed abdominal hernia without signs of complication. Three hours after ICU admission, he developed hemodynamic instability. Therefore, a new CT scan was requested, showing signs of hernia complication. He was moved to the operating room where a complete transversal section of an ileal loop was identified. Five hours after surgery, he presented a new episode of hemodynamic instability with signs of skin and soft tissue infection. Due to the high clinical suspicion of necrotizing fasciitis development, wide debridement was performed. Following traumatic abdominal wall hernia (TAWH), patients can present unsuspected injuries in abdominal organs. Helical CT can be falsely negative in the early moments, leading to misdiagnosis. Necrotizing fasciitis is a potentially fatal infection and, consequently, resuscitation measures, wide-spectrum antibiotics, and early surgical debridement are required. This type of fasciitis can develop after blunt abdominal trauma following wall hernia without skin disruption.

  6. Intra-articular distribution pattern after ultrasound-guided injections in wrist joints of patients with rheumatoid arthritis

    DEFF Research Database (Denmark)

    Boesen, Mikael; Jensen, Karl Erik; Torp-Pedersen, Søren

    2007-01-01

    OBJECTIVE: To investigate the distribution of an ultrasound-guided intra-articular (IA) injection in the wrist joint of patients with rheumatoid arthritis (RA). METHODS: An ultrasound-guided IA drug injection into the wrist joint was performed in 17 patients with 1 ml methylprednisolone (40 mg...... with the MRI OMERACT synovitis score (r=0.60, p=0.014), but not with the erosions, bonemarrow oedema scores or any clinical parameters. CONCLUSION: The distribution of contrast on MRI showed patient specific and random patterns after IA injections in active RA wrist joints. The degree of distribution increased...

  7. 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.

  8. Learning arm/hand coordination with an altered visual input.

    Science.gov (United States)

    Iftime Nielsen, Simona Denisia; Dosen, Strahinja; Popović, Mirjana B; Popović, Dejan B

    2010-01-01

    The focus of this study was to test a novel tool for the analysis of motor coordination with an altered visual input. The altered visual input was created using special glasses that presented the view as recorded by a video camera placed at various positions around the subject. The camera was positioned at a frontal (F), lateral (L), or top (T) position with respect to the subject. We studied the differences between the arm-end (wrist) trajectories while grasping an object between altered vision (F, L, and T conditions) and normal vision (N) in ten subjects. The outcome measures from the analysis were the trajectory errors, the movement parameters, and the time of execution. We found substantial trajectory errors and an increased execution time at the baseline of the study. We also found that trajectory errors decreased in all conditions after three days of practice with the altered vision in the F condition only for 20 minutes per day, suggesting that recalibration of the visual systems occurred relatively quickly. These results indicate that this recalibration occurs via movement training in an altered condition. The results also suggest that recalibration is more difficult to achieve for altered vision in the F and L conditions compared to the T condition. This study has direct implications on the design of new rehabilitation systems.

  9. Algorithms for Unequal-Arm Michelson Interferometers

    Science.gov (United States)

    Giampieri, Giacomo; Hellings, Ronald W.; Tinto, Massimo; Bender, Peter L.; Faller, James E.

    1994-01-01

    A method of data acquisition and data analysis is described in which the performance of Michelson-type interferometers with unequal arms can be made nearly the same as interferometers with equal arms. The method requires a separate readout of the relative phase in each arm, made by interfering the returning beam in each arm with a fraction of the outgoing beam.

  10. Isotropy of an Upper Limb Exoskeleton and the Kinematics and Dynamics of the Human Arm

    Directory of Open Access Journals (Sweden)

    Joel C. Perry

    2009-01-01

    shoulder and elbow, and nearly half of the total torque at the wrist. These results suggest that the majority of human arm joint torques are devoted to supporting the human arm position in space while compensating gravitational loads whereas a minor portion of the joint torques is dedicated to arm motion itself. A unique axial orientation at the base of the exoskeleton allowed the singular configuration of the shoulder joint to be moved towards the boundary of the human arm workspace while supporting 95% of the arm's workspace. At the same time, this orientation allowed the best exoskeleton manipulability at the most commonly used human arm configuration during ADLs. One of the potential implications of these results might be the need to compensate gravitational load during robotic-assistive rehabilitation treatment. Moreover, results of a manipulability analysis of the exoskeleton system indicate that the singular configuration of the exoskeleton system may be moved out of the human arm physiological workspace while maximising the overlap between the human arm and the exoskeleton workspaces. The collected database along with kinematic and dynamic analyses may provide a fundamental basis towards the development of assistive technologies for the human arm.

  11. 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.

  12. [Abdominal tuberculosis in childhood: the clinical manifestations].

    Science.gov (United States)

    Rivera Medina, J; Almendras, M; Devoto, G; Martinez, E; Gonzales, J; Alarcón, P; Muñoz, S

    1993-01-01

    The authors reviewed the histories of 133 patients with abdominal tuberculosis in Instituto Nacional de Salud del Niño (Children's Hospital), Lima, Perú, between 1989 and 1991. We found morbidity higher in scholars (67.4%). Weight lost were present in all cases and malaise in 95.3%, abdominal distension in 83.72% and abdominal pain in 79.06%. Anaemia in 76.06%, ratio albumin/globulin were altered in 74.41% leukocytosis in 67.44%. Evidence of tuberculosis on chest X-ray were detected only in 62.5%.

  13. A hybrid BMI-based exoskeleton for paresis: EMG control for assisting arm movements

    Science.gov (United States)

    Kawase, Toshihiro; Sakurada, Takeshi; Koike, Yasuharu; Kansaku, Kenji

    2017-02-01

    Objective. Brain-machine interface (BMI) technologies have succeeded in controlling robotic exoskeletons, enabling some paralyzed people to control their own arms and hands. We have developed an exoskeleton asynchronously controlled by EEG signals. In this study, to enable real-time control of the exoskeleton for paresis, we developed a hybrid system with EEG and EMG signals, and the EMG signals were used to estimate its joint angles. Approach. Eleven able-bodied subjects and two patients with upper cervical spinal cord injuries (SCIs) performed hand and arm movements, and the angles of the metacarpophalangeal (MP) joint of the index finger, wrist, and elbow were estimated from EMG signals using a formula that we derived to calculate joint angles from EMG signals, based on a musculoskeletal model. The formula was exploited to control the elbow of the exoskeleton after automatic adjustments. Four able-bodied subjects and a patient with upper cervical SCI wore an exoskeleton controlled using EMG signals and were required to perform hand and arm movements to carry and release a ball. Main results. Estimated angles of the MP joints of index fingers, wrists, and elbows were correlated well with the measured angles in 11 able-bodied subjects (correlation coefficients were 0.81  ±  0.09, 0.85  ±  0.09, and 0.76  ±  0.13, respectively) and the patients (e.g. 0.91  ±  0.01 in the elbow of a patient). Four able-bodied subjects successfully positioned their arms to adequate angles by extending their elbows and a joint of the exoskeleton, with root-mean-square errors  BMI-based exoskeleton for paralyzed arms and hands using real-time control was realized by designing a new method to estimate joint angles based on EMG signals, and these may be useful for practical rehabilitation and the support of daily actions.

  14. 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

  15. [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.

  16. Proprioceptive Interaction between the Two Arms in a Single-Arm Pointing Task.

    Directory of Open Access Journals (Sweden)

    Kazuyoshi Kigawa

    Full Text Available Proprioceptive signals coming from both arms are used to determine the perceived position of one arm in a two-arm matching task. Here, we examined whether the perceived position of one arm is affected by proprioceptive signals from the other arm in a one-arm pointing task in which participants specified the perceived position of an unseen reference arm with an indicator paddle. Both arms were hidden from the participant's view throughout the study. In Experiment 1, with both arms placed in front of the body, the participants received 70-80 Hz vibration to the elbow flexors of the reference arm (= right arm to induce the illusion of elbow extension. This extension illusion was compared with that when the left arm elbow flexors were vibrated or not. The degree of the vibration-induced extension illusion of the right arm was reduced in the presence of left arm vibration. In Experiment 2, we found that this kinesthetic interaction between the two arms did not occur when the left arm was vibrated in an abducted position. In Experiment 3, the vibration-induced extension illusion of one arm was fully developed when this arm was placed at an abducted position, indicating that the brain receives increased proprioceptive input from a vibrated arm even if the arm was abducted. Our results suggest that proprioceptive interaction between the two arms occurs in a one-arm pointing task when the two arms are aligned with one another. The position sense of one arm measured using a pointer appears to include the influences of incoming information from the other arm when both arms were placed in front of the body and parallel to one another.

  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

    INTRODUCTION: Evidence for the effect of post-operative abdominal binders on post-operative pain, seroma formation, physical function, pulmonary function and increased intra-abdominal pressure among patients after surgery remains largely un-investigated. METHODS: A systematic review was conducted....... 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...... to reduce seroma formation after laparoscopic ventral herniotomy and a non-significant reduction in pain. Physical function was improved, whereas evidence supports a beneficial effect on psychological distress after open abdominal surgery. Evidence also supports that intra-abdominal pressure increases...

  18. [Inflammatory aneurysms of the abdominal aorta].

    Science.gov (United States)

    Tovar Martín, E; Acea Nebril, B

    1993-01-01

    Approximately 10 per cent of abdominal aneurysms have an excessively thick wall that sometimes involve duodenum, cava or colon by an inflammatory process. Between February 1986 and December 1992, 147 patients with abdominal aortic aneurysm (AAA) were treated surgically and in 13 (8.8%) the aneurysms were found to be inflammatory. Their mean age was 67.3 years (70.1 years in non inflammatory group) and all were symptomatics initially (abdominal pain in 53%, rupture in 23%, mass in 15%). The operative mortality for elective resection was 37% in patients with inflammatory abdominal aortic aneurysms (IAAA) decreasing to 9% in the AAA group without inflammatory involvement. We conclude that surgery is indicated in these patients to prevent rupture and to hasten the subsidense of inflammatory process ever with postoperative morbi-mortality increased.

  19. Abdominal pain - children under age 12

    Science.gov (United States)

    Stomach pain in children; Pain - abdomen - children; Abdominal cramps in children; Belly ache in children ... belly Has had a recent injury to the abdomen Is having trouble breathing Call your provider if ...

  20. 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...

  1. Abdominal Wall Hernias: Various Imaging Features Correlated with the Anatomy of Abdominal Wall at MDCT

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Shin Young; Shin, Hyeong Cheol; Kim, Sang Won; Kim, Il Young; Kim, Young Tong [Soonchunhyang University Cheonan Hospital, Cheonan (Korea, Republic of)

    2009-07-15

    Abdominal wall hernias are a common condition. However, they may develop acute complications and require surgical correction in most cases. Hence, the correct radiological examination is requisite for an accurate diagnosis. A multi-detector row CT (MDCT) provides an accurate identification of the anatomy of the abdominal wall, precise hernia type, and helps in the detection of early signs of complication. We report various imaging features of abdominal wall hernias via a MDCT.

  2. Ulnar neuropathy at the wrist in a patient with carpal tunnel syndrome after open carpal tunnel release.

    Science.gov (United States)

    Kim, Nack Hwan; Kim, Dong Hwee

    2012-04-01

    Ulnar neuropathy at the wrist is rarely reported as complications of carpal tunnel release. Since it can sometimes be confused with recurrent median neuropathy at the wrist or ulnar neuropathy at the elbow, an electrodiagnostic study is useful for detecting the lesion in detail. We present a case of a 51-year-old woman with a two-week history of right ulnar palm and 5(th) digit tingling sensation that began 3 months after open carpal tunnel release surgery of the right hand. Electrodiagnostic tests such as segmental nerve conduction studies of the ulnar nerve at the wrist were useful for localization of the lesion, and ultrasonography helped to confirm the presence of the lesion. After conservative management, patient symptoms were progressively relieved. Combined electrodiagnostic studies and ultrasonography may be helpful for diagnosing and detecting ulnar neuropathies of the wrist following carpal tunnel release surgery.

  3. 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.

  4. “Remotion” Total Wrist Arthroplasty: Preliminary Results of a Prospective International Multicenter Study of 215 Cases

    DEFF Research Database (Denmark)

    Herzberg, Guillaume; Boeckstyns, Michel Ernest Henri; Sorensen, Allan Ibsen;

    2012-01-01

    preoperative and postoperative reports of "ReMotion" TWA at regular intervals. The cases of 7 centers with more than 15 inclusions were considered for this article. A total of 215 wrists were included. In the rheumatoid arthritis (RA; 129 wrists) and nonrheumatoid arthritis (non-RA; 86 wrists) groups......This study reports the current results of an international multicenter study of one last generation total wrist arthroplasty (TWA) ("ReMotion," Small Bone Innovation, Morristown, PA). The two first authors (G.H. and M.B.) built a Web-based prospective database including clinical and radiological...... with the previous generation TWA. The level of evidence for this study is IV....

  5. Feature Extraction for the Wrist-pulse-signals in Traditional Chinese Medicine by Ensemble Empirical Mode Decomposition

    Institute of Scientific and Technical Information of China (English)

    向程; 覃开蓉

    2008-01-01

    @@ Pulse diagnosis plays a vital role in Traditional Chinese Medicine (TCM). To extract effective and properfeatures from the wrist-pulse-signals is a crucial step for the recognition and classification of the pulse signals.

  6. [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

  7. A focus on intra-abdominal infections

    Directory of Open Access Journals (Sweden)

    Sartelli Massimo

    2010-03-01

    Full Text Available Abstract Complicated intra-abdominal infections are an important cause of morbidity and are frequently associated with poor prognosis, particularly in higher risk patients. Well defined evidence-based recommendations for intra-abdominal infections treatment are partially lacking because of the limited number of randomized-controlled trials. Factors consistently associated with poor outcomes in patients with intra-abdominal infections include increased illness severity, failed source control, inadequate empiric antimicrobial therapy and healthcare-acquired infection. Early prognostic evaluation of complicated intra-abdominal infections is important to select high-risk patients for more aggressive therapeutic procedures. The cornerstones in the management of complicated intra-abdominal infections are both source control and antibiotic therapy. The timing and the adequacy of source control are the most important issues in the management of intra-abdominal infections, because inadequate and late control of septic source may have a negative effect on the outcomes. Recent advances in interventional and more aggressive techniques could significantly decrease the morbidity and mortality of physiologically severe complicated intra-abdominal infections, even if these are still being debated and are yet not validated by limited prospective trials. Empiric antimicrobial therapy is nevertheless important in the overall management of intra-abdominal infections. Inappropriate antibiotic therapy may result in poor patient outcomes and in the appearance of bacterial resistance. Antimicrobial management is generally standardised and many regimens, either with monotherapy or combination therapy, have proven their efficacy. Routine coverage especially against Enterococci and candida spp is not always recommended, but can be useful in particular clinical conditions. A de escalation approach may be recommended in patients with specific risk factors for multidrug

  8. [Late primary abdominal pregnancy. Case report].

    Science.gov (United States)

    Farías, Emigdio Torres; Gómez, Luis Guillermo Torres; Allegre, René Márquez; Higareda, Salvador Hernández

    2008-09-01

    Abdominal advanced pregnancy is an obstetric complication that put at risk maternal and fetal life. We report a case of advanced abdominal pregnancy with intact ovaries and fallopian tubes, without ureteroperitoneal fistulae and, late prenatal diagnosis, in a multiparous patient without risk factors, with alive newborn, and whose pregnancy was attended at Unidad Medica de Alta Especialidad, Hospital de Gineco-Obstetricia, Centro Medico Nacional de Occidente del IMSS, Guadalajara, Jalisco, México.

  9. 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....

  10. Hérnia traumática da parede abdominal Traumatic abdominal hernia

    Directory of Open Access Journals (Sweden)

    Alexandre Cruz Henriques

    1999-10-01

    Full Text Available A rare case of blunt traumatic abdominal hernia is presented in which jejunal loops herniated through the abdominal wall. The patient had a serious motor vehicle accident seven years ago, while wearing the seat belt. He developed a traumatic hernia in the anterior lateral abdominal wall, which was operated, and relapsed after some months. The patient was reoperated and we observed the unattachment of the anterior lateral abdominal musculature from the ilium crest. After the hernial sac treatment, the defect was solved with the use of a polypropylene mesh. The postoperative evolution was good and four months later there were no signs of recurrence. Traumatic abdominal hernia remains a rare clinical entity, despite the increase in blunt abdominal trauma. Traumatic abdominal wall hernia falls into two general categories: small lower quadrant abdominal defects, typically the result of blunt trauma with bicycle handlebars, and larger abdominal wall defects related to motor vehicle accidents. The diagnosis may be often established by the physical examination alone. Conventional radiology and computerized tomography usefulness have been proved. In the vast majority of cases, early repair is recommended. The appropriate treatment is the reduction of the herniated bowel into the abdomen, the debridment of nonviable tissues, and a primary tension free closure of the detect.

  11. Abdominal epilepsy and foreign body in the abdomen--dilemma in diagnosis of abdominal pain.

    Science.gov (United States)

    Topno, Noor; Gopasetty, Mahesh S; Kudva, Annappa; B, Lokesh

    2005-12-31

    There are many medical causes of abdominal pain; abdominal epilepsy is one of the rarer causes. It is a form of temporal lobe epilepsy presenting with abdominal aura. Temporal lobe epilepsy is often idiopathic, however it may be associated with mesial temporal lobe sclerosis, dysembryoplastic neuroepithelial tumors and other benign tumors, arterio-venous malformations, gliomas, neuronal migration defects or gliotic damage as a result of encephalitis. When associated with anatomical abnormality, abdominal epilepsy is difficult to control with medication alone. In such cases, appropriate neurosurgery can provide a cure or, at least, make this condition easier to treat with medication. Once all known intra-abdominal causes have been ruled out, many cases of abdominal pain are dubbed as functional. If clinicians are not aware of abdominal epilepsy, this diagnosis is easily missed, resulting in inappropriate treatment. We present a case report of a middle aged woman presenting with abdominal pain and episodes of unconsciousness. On evaluation she was found to have an intra-abdominal foreign body (needle). Nevertheless, the presence of this entity was insufficient to explain her episodes of unconsciousness. On detailed analysis of her medical history and after appropriate investigations, she was diagnosed with temporal lobe epilepsy which was treated with appropriate medications, and which resulted in her pain being relieved.

  12. Correlation of cervical vertebra maturation with hand-wrist maturation in children.

    Science.gov (United States)

    Chang, H P; Liao, C H; Yang, Y H; Chang, H F; Chen, K C

    2001-01-01

    The purpose of this study was to evaluate the reliability of cervical vertebra maturation as an indicator of skeletal age during the circumpubertal period. This was determined by correlating cervical vertebra maturation to hand-wrist maturation. The vertebral skeletal age was assessed using lateral cephalometric radiographs according to maturity indicators modified from Lamparski. The hand-wrist skeletal age was evaluated in radiographs with the system developed by Fishman. The sample consisted of 503 subjects (244 boys and 259 girls), aged 8 through 18 years. The Spearman rank correlation coefficients and Wilcoxon sign rank test showed that a statistically significant relationship existed between the two assessments. Both the intra- and inter-judge tests of reliability displayed no significant differences. The results of this study indicate that skeletal age assessment made from the maturational changes of cervical vertebrae were reliable, reproducible and valid.

  13. Wrist Pulse Rate Monitor Using Self-Injection-Locked Radar Technology.

    Science.gov (United States)

    Wang, Fu-Kang; Tang, Mu-Cyun; Su, Sheng-Chao; Horng, Tzyy-Sheng

    2016-10-26

    To achieve sensitivity, comfort, and durability in vital sign monitoring, this study explores the use of radar technologies in wearable devices. The study first detected the respiratory rates and heart rates of a subject at a one-meter distance using a self-injection-locked (SIL) radar and a conventional continuous-wave (CW) radar to compare the sensitivity versus power consumption between the two radars. Then, a pulse rate monitor was constructed based on a bistatic SIL radar architecture. This monitor uses an active antenna that is composed of a SIL oscillator (SILO) and a patch antenna. When attached to a band worn on the subject's wrist, the active antenna can monitor the pulse on the subject's wrist by modulating the SILO with the associated Doppler signal. Subsequently, the SILO's output signal is received and demodulated by a remote frequency discriminator to obtain the pulse rate information.

  14. 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.

  15. Wrist Pulse Rate Monitor Using Self-Injection-Locked Radar Technology

    Directory of Open Access Journals (Sweden)

    Fu-Kang Wang

    2016-10-01

    Full Text Available To achieve sensitivity, comfort, and durability in vital sign monitoring, this study explores the use of radar technologies in wearable devices. The study first detected the respiratory rates and heart rates of a subject at a one-meter distance using a self-injection-locked (SIL radar and a conventional continuous-wave (CW radar to compare the sensitivity versus power consumption between the two radars. Then, a pulse rate monitor was constructed based on a bistatic SIL radar architecture. This monitor uses an active antenna that is composed of a SIL oscillator (SILO and a patch antenna. When attached to a band worn on the subject’s wrist, the active antenna can monitor the pulse on the subject’s wrist by modulating the SILO with the associated Doppler signal. Subsequently, the SILO’s output signal is received and demodulated by a remote frequency discriminator to obtain the pulse rate information.

  16. BioWatch: Estimation of Heart and Breathing Rates from Wrist Motions

    Directory of Open Access Journals (Sweden)

    Javier Hernandez

    2015-11-01

    Full Text Available Continued developments of sensor technology including hardware miniaturization and increased sensitivity have enabled the development of less intrusive methods to monitor physiological parameters during daily life. In this work, we present methods to recover cardiac and respiratory parameters using accelerometer and gyroscope sensors on the wrist. We demonstrate accurate measurements in a controlled laboratory study where participants (n = 12 held three different positions (standing up, sitting down and lying down under relaxed and aroused conditions. In particular, we show it is possible to achieve a mean absolute error of 1.27 beats per minute (STD: 3.37 for heart rate and 0.38 breaths per minute (STD: 1.19 for breathing rate when comparing performance with FDA-cleared sensors. Furthermore, we show comparable performance with a state-of-the-art wrist-worn heart rate monitor, and when monitoring heart rate of three individuals during two consecutive nights of in-situ sleep measurements.

  17. Three-dimensional Doppler ultrasound findings in healthy wrist and finger tendon sheaths

    DEFF Research Database (Denmark)

    Ammitzboll-Danielsen, Mads; Janta, Iustina; Torp-Pedersen, Søren;

    2016-01-01

    BACKGROUND: The aim was to investigate the presence of feeding vessels in or in close proximity to extensor and flexor tendon sheaths at the wrists level and in finger flexor tendon sheaths in healthy controls, using 3D ultrasound (US), which may cause pitfalls, in order to ensure correct...... interpretation of Doppler signals when diagnosing tenosynovitis. METHOD: Forty healthy participants (20 women and 20 men age 23-67 years) without prior history of arthritis, tendon diseases or present pain in their hands were included. Twenty participants had 3D Doppler US of the second and third finger...... and twenty of the right wrist. US was carried out using a GE Logiq E9 unit with a 3D US probe. The colour Doppler settings were to published recommendation. RESULTS: The feeding vessels in or in close proximity to the tendon sheaths were found in the flexor and extensor tendons sheaths at least once in each...

  18. A Conceptual Project of a Device for Human Wrist Functional Rehabilitation

    Directory of Open Access Journals (Sweden)

    Lewandowski B.

    2016-12-01

    Full Text Available In the paper, the problems of devices supporting functional rehabilitation of a human wrist were addressed. A literature review and a description of selected devices together with an indication of their advantages and disadvantages were conducted. The biomechanical structure of a human wrist was analyzed. On this basis and after taking into consideration ranges of motion of the selected joints the concept of a new mechanism was developed. A 3D model of the device was built in the Autodesk Inventor system. For the purpose of simulations another model was developed in the MSC Adams system. Issues of drives and sensors selection, as well as requirements for the control system, were examined.

  19. 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.

  20. 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.