[Purpose] The purpose of this study was to investigate the difference in task
performance, grip and pinch strength, and dexterity with and without cock-up splints,
which are widely used in occupational therapy practice. [Methods] Twenty-three
participants performed Jebsen-Taylor hand function test and grooved pegboard for task
performance and dexterity. The power grip and pinch strength was measured using Jamar
hydraulic hand dynamometer and pinch gauge. [Results] In the result of the Jebsen-Taylor
hand function test, task performance with the cock-up splint was slower compared to
without the splint for all items. Men’s grip power with the cock-up splint was found to be
significantly decreased compared to without the splint. Women’s grip and palmar pinch
strength with the splint decreased significantly compared to without the splint. In the
grooved pegboard test, the dexterity of both men and women with the cock-up splint
decreased significantly compared to without the splint. [Conclusion] To assist patients to
make wise decisions regarding the use of splints, occupational therapists must have
empirical knowledge of the topic as well as an understanding of the theoretical,
technical, and related research evidence. The results of this study will be useful in the
analysis and understanding of changes in hand function in splint applications for people
with hand dysfunction.