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Ergonomic design of a computer mouse for clients with wrist splints
Chien-Hsiou Liu1, Shih-Chen Fan2
1Chien-Hsiou Liu, PhD, is Assistant Professor, Department of Occupational Therapy, College of Medicine, Fu Jen Catholic University, Taipei, Taiwan.
Objective:
We explored effects of cutaneous feedback and hump position on efficiency and comfort in mouse use with a splint. We also analyzed the relationship between anthropometric measurements (width of hand and length of hand, palm, and index) and the task performance.
Method:
Thirty participants performed a computer task with two forms of mice (front hump and rear hump) and two kinds of wrist splints (dorsal and volar). Movement time and satisfaction scores were recorded.
Results:
No interaction effect (Hump Position × Splint Type) was found on movement time. Movement time was shorter for rear-hump mouse users than for front-hump mouse users. Movement time was also shorter for wearers of dorsal wrist splints than for wearers of volar wrist splints. Limited differences existed in the satisfaction scores. Participants with a longer index finger had shorter movement time.
Conclusion:
Both dorsal wrist splints and rear-hump mice are recommended. Length of index finger positively correlated with task performance.
