Computer aided design simulates articular surfaces, highlighting kinematic relationships and stability effects.
A computer aided design (CAD) technique is used to create a series of surfaces for a thumb carpometacarpal (cmc) joint based upon its kinematic mechanism. Conics are incorporated in the torroidal shape to facilitate efficient modeling of complex articular cartilage anatomy. The resulting surfaces are compared to determine the relationship between the revolute orientation and surface shape. The simulation techniques and the effect of the conic variations on range of motion and stability are discussed and compared to preliminary results for other fixed axis joints.
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Truman et al. (1995) studied this question.
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