The effect of wearing a flexible wrist splint on carpal tunnel pressure during repetitive hand activity.
Rempel-D; Manojlovic-R; Levinsohn-DG; Bloom-T; Gordon-L
J Hand Surg 1994 Jan; 19(1):106-110
Carpal tunnel pressure (CTP) and wrist angles were monitored in healthy subjects during the performance of a material handling task, with and without a wrist splint. The 19 volunteers had no signs of carpal tunnel syndrome (CTS). A fluid filled catheter inserted into the carpal canal and a two channel electrogoniometer mounted on the dorsum of the hand and forearm were used to continuously monitor CTP and wrist angles. During the repetitive motion, measurements indicated that the median nerve was exposed to elevated fluid pressure within the carpal tunnel. Use of the flexible wrist splint raised the resting CTP. The authors suggest this was due to direct external pressure on the carpal canal. CTP was not reduced by the splint during repetitive activity but the splint did reduce the range of motion of the wrist. As the use of the wrist splint had no effect on the CTP, the authors suggest that any benefit derived from the use of the splint must relate to other aspects of the physiology of the hand.
NIOSH-Publication; NIOSH-Grant; Musculoskeletal-system-disorders; Carpal-tunnel-syndrome; Cumulative-trauma-disorders; Manual-materials-handling; Humans; Hand-injuries; Personal-protective-equipment
Medicine University of Calif., S.f. Sfgh Bldg 30 5Th FL San Francisco, CA 94110
Journal of Hand Surgery
University of California San Francisco, San Francisco, California