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Biomechanical hand-functionality measurement system

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3 Author(s)
Paske, William C. ; QBT/KaDa Research, Inc., 4646 Highway 6 South, Suite 120, Sugar Land, Texas 77478 ; Metzger, Charles L. ; Sutherland, Jeffrey M.

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Functional assessment of the hands may now be accomplished via a biomechanical handset designed to repeatably and reproducibly aid in the identification of fine motor performance issues which may be present in either or both hands of the test subject. The test is accomplished by monitoring the force triangle defined by the thumb (digit I), index finger (digit II), and small finger (digit V) as they maintain a grip on a hand sensor throughout several repetitive exercises. The sensor consists of three independent load cells built into a single block. The three independently applied forces are sampled every 4 ms. These forces are evaluated as a function of time and test parameters are then derived for use as diagnostic aids.

Published in:

Review of Scientific Instruments  (Volume:76 ,  Issue: 5 )