Article

Nine healthy subjects sustained maximum grip of an instrumented handle while voluntarily moving the wrist joint within their available range of motion of the wrist in a continuous and random manner. Individual finger forces and wrist angular positions in flexion/extension and radial/ulnar deviation were recorded simultaneously. Wrist position had a significant effect on individual finger force and total force production. Peak finger forces were produced at 200 of wrist extension and 5degrees of ulnar deviation. At this position, a mean total grip force of 114.9 (+/- 12.8) N was produced with force-sharing percentages of 32.2% (+/- 3.8%), 32.6% (+/- 4.3%), 23.5% (+/- 4.5%), and 11.7% (+/- 4.9%) among the index, middle, ring, and small finger, respectively. As the wrist was moved farther away from this position, the forces produced by individual fingers decreased incrementally; however, the decreases in individual finger forces were not proportional, leading to a dependence of finger force-sharing patterns on wrist position. (J Hand Surg 2002;27A:886-896. Copyright (C) 2002 by the American Society for Surgery of the Hand.).

Langue : ANGLAIS

Identifiant basis : 2002224618