CHANGES IN CARPAL KINEMATICS WITH DISPLACED INTRAARTICULAR FRACTURES OF THE DISTAL RADIUS

摘要

Displaced fractures of the distal radius have been shown to significantly alter the contact stress distribution across the joint. It is hypothesized that these aberrant stresses and displacements may alter the kinematics of the joint as well. This study utilized the Polhemous 3Space electromagnetic tracking device to record the kinematics of the scaphoid and lunate in four unembalmed cadaver specimens. Results of this study show significant changes in carpal motion with increasing fracture displacement and confirm clinical observations of joint instability following these fractures.