PURPOSE Midcarpal degeneration is well documented after radioscapholunate fusion. This study tested the hypothesis that radioscapholunate fusion alters the kinematic behavior of the remaining lunotriquetral and midcarpal joints, with specific focus on the dart-thrower's motion. METHODS Simulated radioscapholunate fusions were performed on 6 cadaveric wrists in an anatomically neutral posture....

Objective: The purpose of this study was to assess the measurement nerve gliding, resulting from joint motion and changes upper extremity position. Methods: extremities ten fresh human cadavers were dissected delineate relationship between positioning gliding distance nerves. Nerve mobilization – stretching therapy (SMG) techniques are mentioned in literature for each radial, medial ulnar excur...

In this paper, a calibration method to compensate for changes in SEMG amplitude with joint angle is introduced. Calibration factors were derived from constant amplitude surface electromyogram (SEMG) recordings from the biceps brachii (during elbow flexion) and the triceps brachii (during elbow extension) across seven elbow joint angles. SEMG data were then recorded from the elbow flexors (bicep...

Split, gabled keyboard designs can prevent or improve upper extremity pain among computer users; the mechanism appears to involve the reduction of awkward wrist and forearm postures. This study evaluated the effects of changes in opening angle, slope and height (independent variables) of a gabled (14 degrees) keyboard on typing performance and upper extremity postures. Twenty-four experienced t...

BACKGROUND Occupational risks for carpal tunnel syndrome (CTS) have been examined in various occupations, and several systematic reviews (SRs) have been published on this topic. There has been no critical appraisal or synthesis of the evidence in the SRs. The aims of this study are (1) to synthesise the observational evidence and evaluate the methodological quality of SRs that assess the effect...

DOI: 10.3760/cma.j.issn.1008-1275.2011.01.001 Department of Trauma and Orthopaedic Surgery, F. Bourguiba University Hospital, 5000 Monastir, Tunisia (Hamdi MF) Corresponding author: Tel: 216-99-831-236 / 216-984 08 -3 86 , Fax: 21 6-73 -4 6 0-67 8, E m ai l: h am di. [email protected] 【Abstract】Volar perilunate fracture dislocation is an extremely rare carpal injury, but associated with metaca...

The pattern of muscle responses associated with catching a ball in the presence of vision was investigated by independently varying the height of the drop and the mass of the ball. It was found that the anticipatory EMG responses comprised early and late components. The early components were produced at a roughly constant latency (about 130 msec) from the time of ball release. Their mean amplit...

Long weekly hours of keyboard use may lead to or aggravate carpal tunnel syndrome. The effects of typing on fluid pressure in the carpal tunnel, a possible mediator of carpal tunnel syndrome, are unknown. Twenty healthy subjects participated in a laboratory study to investigate the effects of typing at different wrist postures on carpal tunnel pressure of the right hand. Changes in wrist flexio...

Locked fixed-angle plating in the hand and wrist helps to optimize outcomes following surgical fixation of select acute fractures and complex reconstructions. Select indications include unstable distal ulna head/neck fractures, periarticular metacarpal and phalangeal fractures, comminuted/multifragmentary diaphyseal fractures with bone loss (ie, combined injuries of the hand), osteopenic/pathol...

Carpal Tunnel Syndrome (CTS) affects roughly 3%6% of the working population ages 18-64 [1]. This affliction is caused by applying stress on the median nerve that is routed through the carpal tunnel while it is at a positive or negative angle, greater than 15 degrees in either direction, to the human wrist [2]. The median nerve can become inflamed and swollen due to pressure from the palmar carp...