Js. Talsania et Sh. Kozin, NORMAL DIGITAL CONTRIBUTION TO GRIP STRENGTH ASSESSED BY A COMPUTERIZED DIGITAL DYNAMOMETER, Journal of hand surgery. British volume, 23B(2), 1998, pp. 162-166
A computerized digital dynamometer was used to assess the contribution
of individual fingers to total grip strength in 100 hands from 50 ran
domly selected healthy subjects. The dynamometer simultaneously record
ed force data from each digit (index, long, ring, and small) and cumul
ative grip directly to a laptop computer. The percentage contribution
of each finger force to total grip force was calculated at three succe
ssive handle sizes for dominant and non-dominant hands. Individual dig
ital contributions to total grip strength were approximately 25%, 35%,
26% and 15% for the index, long, ring, and small fingers respectively
. This pattern was consistent irrespective of handle size, hand domina
nce, and grip strength.