The injured upper extremity and the JAMAR five-handle position grip test.
Niebuhr and Marion (Am J Phys Med Rehab 1990;69:96-101) recently presented a study that utilized healthy subjects who were able to control the amount of force exerted during submaximal grip strength efforts. Stokes (J Occup Med 1983;25:683-684) proposed that a true weakness of grip can be distinguished in the injured upper extremity from a feigned effort that yields a flat horizontal type of curve. The purpose of this study was to evaluate the five-handle position JAMAR grip test in an injured population and compare the curves produced with a group of healthy subjects. We found that the patients with well-documented pathology produced a curve that was similar in shape to the healthy group; however, the curve on the injured extremity was reduced in force output.
Goldman
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Department of Orthopedics, Mayo Clinic, Rochester, Minnesota 55905.
Cahalan
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D000328:Adult; D000368:Aged; D001696:Biomechanical Phenomena; D005260:Female; D006225:Hand / Q000503:physiopathology*; D006230:Hand Injuries / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009119:Muscle Contraction; D012016:Reference Values