Control of Wrist and Arm Movements of Varying Difficulties. (December 2010) Jason Baxter Boyle, B.S., Texas A&M University Chair of Advisory Committee: Dr. Charles H. Shea Three experiments compared wrist and arm performance in a cyclical Fitts’ target task. The purpose of Experiment I was to determine if movement kinematics differed for wrist/elbow flexion/extension movements to targets of var...

BACKGROUND Trigger wrist is a rare condition first described by Marti in 1960, and various causes have been reported. The condition mostly occurs with finger flexion and extension, and rarely with flexion and extension of the wrist itself. Avascular necrosis of the capitate is also a rare condition, first described by Jönsson in 1942. While some reports of this condition have been published, li...

Prevalence rates of carpal tunnel syndrome (CTS) in the wheelchair user population are high. One of the possible causes of CTS in this population is the movement pattern of the wrist during handrim wheelchair propulsion, which could include large wrist joint angles and wrist/finger flexor activity. Combined with the repetitive character of the movement, this could, in time, be detrimental to th...

UNLABELLED To examine the effect of a 10-week upper-body resistance training program on bone turnover markers and site-specific bone mineral density (BMD) in the wrist and distal half of the ulna and radius in untrained and healthy young premenopausal women. METHODS Twenty-two subjects (aged 22.1 ± 1.8 years) were randomly assigned to a resistance training (n = 12) or no training control (n =...

AIM Describe the use of 320 row detector CT scanner for 4 Dimensional CT acquisition on a specialized platform designed for wrist kinematic evaluation and to demonstrate the utility of 4 Dimensional CT in the assessment of wrist biomechanics before and after surgical repair. MATERIALS AND METHODS Six wrists (1 volunteer and 4 patients) were uniformly imaged with conventional X-rays and 4 Dime...

When humans rotate their wrist in flexion-extension, radial-ulnar deviation, and combinations, the resulting paths (like the path of a laser pointer on a screen) exhibit a distinctive pattern of curvature. In this report we show that the passive stiffness of the wrist is sufficient to account for this pattern. Simulating the dynamics of wrist rotations using a demonstrably realistic model under...

QUESTION Is electrical stimulation and splinting more effective than splinting alone for the management of wrist contracture following acquired brain injury? DESIGN A multi-centre randomised trial with concealed allocation, assessor blinding, and intention-to-treat analysis. PARTICIPANTS Thirty-six adults with first stroke or traumatic brain injury and mild to moderate wrist flexion contrac...

INTRODUCTION Undertreatment of osteoporosis is common, even for high-risk patients. Among the reasons for undertreatment may be a clinician's perception of a lack of treatment benefit, particularly in light of patients' expected future mortality. Among US Medicare beneficiaries, we evaluated the risk for second fracture versus death in the 5 years following a hip, clinical vertebral, and wrist/...