Abstract
Accurate kinematic information of the knee joint is essential for an exact diagnosis of patient with artificial knee and for its design. In this paper, we gave an outline of advanced technique for estimating three-dimensional knee motions using single plane projections of an artificial knee joint. Our estimation scheme was based on Banks's work, but further significant improvements were made. Computer modeling studies indicated that our technique could achieve sufficient accuracy for a clinical use. It was proposed that this technique could provide a simple and practical way for evaluating the current total knee designs and for developing improved knee replacement devices.
