Effect of grip type, wrist motion, and resistance level on pressures within the carpal tunnel of normal wrists.
Bottom Line: This study systematically evaluated the effect of wrist motion resistance and grip type on CTP during wrist motion typical of occupational tasks.CTP typically did not increase during wrist flexion, and in fact often decreased.Results could help inform design or modification of wrist motion intensive occupational tasks. © 2014 The Authors.
Affiliation: Liberty Mutual Research Institute for Safety, 71 Frankland Road, Hopkinton, Massachusetts, 01748.Show MeSH
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Mentions: Data for each motion segment was standardized, as described in Methods, to allow investigation of change in CTP across participants, and to allow for quantifying tunnel pressure change as a function of wrist angular displacement and resistance level from the neutral, no-load condition. The results of the analyses of standardized change in CTP by wrist angular displacement for each grip application are presented in Figure 4, with solid symbols indicating significantly different pressures from the neutral, no-load condition. Resistance levels are presented as a family of curves.
Affiliation: Liberty Mutual Research Institute for Safety, 71 Frankland Road, Hopkinton, Massachusetts, 01748.