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Updated: Aug 19, 2026

A Tactile Automated Passive-Finger Stimulator (TAPS)
Published on: June 3, 2009
Forces transmitted along human flexor tendons during passive and active movements of the fingers
1Department of Hand and Upper Limb Surgery, Wrightington Hospital NHS Trust, Hall Lane, Wrightington, Nr Wigan, UK. powelleric@beeb.net
Abstract:
The in vivo forces in human digital flexor tendons were determined in 33 patients undergoing a carpal tunnel decompression surgery using a newly developed device. The tendons were tested in passive and active flexion, and flexing against resistance of up to 500 g. Forces in the range of 0.2 to 50 N were noted. Whilst the mean of these forces remained below the force normally required to dehisce a fresh modified Kessler repair, the range of values was such that we would only recommend early movement with great caution and under supervision.
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