Background: Hamstring tendons are secondary hip extensors. Their harvest for graft in anterior cruciate ligament(ACL) reconstruction may create deleterious effect on hip extension strength. This is of particular importance in sportsthat need powerful hip extension force like climbing and sprinting. Due to scarcity of a comprehensive study in thisarea, we designed this prospect...

Carpal kinematics have been previously limited to in vitro models with cadaveric specimens. Using a newly developed markerless bone registration algorithm, we noninvasively studied the in vivo kinematics of the capitate, scaphoid, and lunate during wrist extension and flexion in both wrists of 5 men and 5 women. Computed tomography volume images were acquired in neutral and in 2 positions in bo...

QUESTION Do dynamic splints reduce contracture following distal radial fracture? DESIGN Assessor-blinded, randomised controlled trial. PARTICIPANTS Forty outpatients with contracture following distal radial fracture. INTERVENTION The control group received routine care consisting of exercises and advice for 8 weeks. In addition to routine care, during the day the experimental group receiv...

OBJECTIVE To test the potential of wrist guards to prevent wrist injury in recreational activities that require good grip strength and hand dexterity. METHODS Forty eight children aged 5-8 years from one Melbourne school volunteered for tests chosen or devised following a review of the literature on the effects of orthoses use and hand function. RESULTS Wrist guard wearing significantly deg...

BACKGROUND AND PURPOSE Splints are commonly applied to the wrist and hand to prevent and treat contracture after stroke. However, there have been few randomized trials of this intervention. We sought to determine whether wearing a hand splint, which positions the wrist in either a neutral or an extended position, reduces wrist contracture in adults with hemiplegia after stroke. METHODS Sixty-...

The condition first known as ‘‘tennis elbow’’ has been recognized for over a century. Typical signs and symptoms include pain and tenderness over the lateral epicondyle, exacerbated by resisted wrist extension and passive wrist flexion, and impaired grip strength. Although many tennis players may experience this condition, most cases are associated with work-related activities or have no obviou...

OBJECTIVE This study compared the total wrist range of motion permitted by four different styles of wrist extension orthoses and the free hand. METHOD Using a repeated-measures, counterbalanced design, 40 healthy female volunteers 20 to 39 years of age shot a basketball while free handed and while wearing each of four wrist extension orthoses: AlignRite; Rolyan D-Ring Long; Rolyan D-Ring Shor...

Wrist stiffness has been shown to have a greater effect on wrist dynamics than inertia and damping for all but the fastest wrist rotations [1]. Therefore, making coordinated wrist rotations requires that humans predict and compensate for the effects of wrist stiffness. Because wrist stiffness is anisotropic (with greater stiffness in radial-ulnar deviation than flexion-extension), some movement...

Tendon transfers to the extensor carpi radialis brevis (ECRB) are often performed to augment wrist extension. This study was conducted to analyze how transfer of the extensor carpi ulnaris (ECU) to the ECRB affects the moment arms, force-generating capacity, and moment-generating capacity of the ECU over a range of wrist flexion-extension. A graphics-based computer model was developed from anat...

We compared a unilateral robot-assisted training protocol (URTP) and a bilateral robot-assisted training protocol (BRTP) to study their differential effects. We recruited 21 patients with stroke who received 90-105 min of therapy 5 days/wk for 4 wk. Participants in the URTP and BRTP groups practiced forearm pronation and supination and wrist flexion and extension in a simultaneous manner with t...