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Theoretical Stress Analysis in Wrist Joint – Neutral Position and Functional Position

From the Rosai Rehabilitation Engineering Center and the Orthopaedic Department, Nagoya University, Japan

Correspondence: Dr Emiko Horii, Nagoya University, Orthopaedic Department, 65 Tsuruma, Syowaku, Nagoya 466-8550, Japan E-mail: emikoh{at}tsuru.med.nagoya-u.ac.jp

A three-dimensional rigid body spring model (3D-RBSM) was used to analyse force distribution through the wrist joint. In the neutral position, 48% of the force was transmitted through the radioscaphoid fossa, 40% through the radiolunate fossa, and 12% through the triangular fibrocartilage complex. In the functional position, the wrist joint was slightly extended, resulting in significantly increased force through the lunate (53%). The lunate appears to bear more load than has been reported previously.

Journal of Hand Surgery (British and European Volume), Vol. 25, No. 3, 292-295 (2000)
DOI: 10.1054/jhsb.2000.0388


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