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Loading on the Scapho-Trapezium-Trapezoid joint during gripping

Gislason, M.K. and Stansfield, B.W. and Nash, D.H. (2009) Loading on the Scapho-Trapezium-Trapezoid joint during gripping. In: 22nd Congress of the International Society of Biomechanics, 2009-07-05 - 2009-07-09.

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Abstract

The scapho-trapezium-trapezoid (STT) joint is believed to be highly vulnerable to wear and has been identified clinically as a high risk joint in arthritic patients. A theoretical model [1] of the load transfer through the wrist during gripping, suggests high activity in the STT ligaments in order to stabilize the carpus. During gripping complicated loading patterns are seen in the carpal bones and various intercarpal joints comprising the wrist joint. The aim was to investigate contact stresses at the STT joint in comparison to those occuring at the radiocarpal joint. Finite element model was created of the whole wrist joint with physiological loading conditions applied.