Theoretical stress analysis in wrist joint--neutral position and functional position.
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.
Genda
E
E
Rosai Rehabilitation Engineering Center and the Orthopaedic Department, Nagoya University, Japan.
Horii
E
E
D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D013314:Stress, Mechanical; D014057:Tomography, X-Ray Computed; D014955:Wrist Joint / Q000000981:diagnostic imaging / Q000502:physiology*