Effect of VDT mouse design on CTD risk and user skill.
Barr-AE; Ozkaya-N; Nordin-M; Lee-E
Occupational and Industrial Orthopaedic Center, Hospital for Joint Diseases, New York University Medical Center, New York, New York 1996 Dec; :1-4
Risk factors present during forearm pronated (FP) mouse use that were associated with the development of forearm and wrist cumulative trauma disorders (CTD) were investigated. A forearm neutral (FN) mouse design eliminated the postural and joint motion risk factors and reduced some of the muscular demands associated with the postural risks. While the FN mouse design may be more difficult to operate initially, the design did not appear to impede the rate of skill acquisition. An increase of 5 to 10 degrees in the grip angle of the FN mouse design was proposed so that the mean wrist deviation angle would be offset from neutral by 5 to 10 degrees of ulnar deviation, and movement would oscillate between neutral and 10 to 15 degrees of ulnar deviation. This would reduce the occurrence of high wrist radial deviation angles and lower demands on the extensor carpi radialis longus and brevis muscle, but also it may improve performance. The authors conclude that risk factors for forearm and wrist CTD are attributable to mouse operation per-se.
NIOSH-Grant; Musculoskeletal-system-disorders; Office-workers; Cumulative-trauma-disorders; Risk-factors; Risk-analysis; Epidemiology; Computer-equipment; Repetitive-work
Occ & Industrial Orth Center Hosp for Joint Diseases/oioc 63 Downing Street New York, NY 10014
Final Grant Report
NTIS Accession No.
Occupational and Industrial Orthopaedic Center, Hospital for Joint Diseases, New York University Medical Center, New York, New York
Hospital for Joint Diseases Ortho Inst, New York, New York