Diagnostic and rehabilitative assessments of hand function commonly omit measurement of twisting strength even though many activities of daily living require turning handles, lids, and objects of many sizes. A simple device to quantify twisting strength was designed and constructed to establish normative data and test hypotheses about hand function. The instrument is easy to use and includes an electronic torsional load cell and disks of several sizes. Tests were conducted on the dominant and nondominant hands of 64 normal subjects and 13 arthritic patients with arthritis of the thumb carpometacarpal joint. Hands were tested with disks ranging in diameter from . A three-way repeated measures analysis showed that gender , handedness , and disk size had significant effects. There was no difference between radial and ulnar deviation strengths . The arthritic group had significantly reduced strength . Nine subjects were tested twice, with between tests: no differences occurred between the first and second testing . The ability to distinguish the test groups with reproducible results proves that the device fulfills all basic requirements; continued testing and development are warranted.
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November 2005
Technical Briefs
A Device for Assessment of Hand and Wrist Coronal Plane Strength
Mark Carl Miller,
Mark Carl Miller
Allegheny General Hospital, Pittsburgh, PA 15212 and
e-mail: mcmiller@wpahs.org
University of Pittsburgh
, Pittsburgh, PA 15261
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Manoj Nair,
Manoj Nair
Allegheny General Hospital
, Pittsburgh, PA 15212
Search for other works by this author on:
Mark E. Baratz
Mark E. Baratz
Allegheny General Hospital
, Pittsburgh, PA 15212
Search for other works by this author on:
Mark Carl Miller
Allegheny General Hospital, Pittsburgh, PA 15212 and
University of Pittsburgh
, Pittsburgh, PA 15261e-mail: mcmiller@wpahs.org
Manoj Nair
Allegheny General Hospital
, Pittsburgh, PA 15212
Mark E. Baratz
Allegheny General Hospital
, Pittsburgh, PA 15212J Biomech Eng. Nov 2005, 127(6): 998-1000 (3 pages)
Published Online: July 18, 2005
Article history
Received:
April 1, 2005
Revised:
July 18, 2005
Citation
Miller, M. C., Nair, M., and Baratz, M. E. (July 18, 2005). "A Device for Assessment of Hand and Wrist Coronal Plane Strength." ASME. J Biomech Eng. November 2005; 127(6): 998–1000. https://doi.org/10.1115/1.2049336
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