| 摘要 |
An artificial condyle (2) for use in a human hip joint in which the condyle has a spherical joint shell (1) which has a radius of curvature R1 and a curvature midpoint M1 and in cross-section a circular concave section contour. A functional surface which is convex at least in a region which articulates in the joint shell (1) is designed as a sphere such that when it is inserted in the shell (2), in a longitudinal plane X-X passing through the midpoint M1, a radius RK1=R1 is formed which has a midpoint MK1 coinciding with M1. A transverse plane Y-Y perpendicular to the longitudinal plane X-X has, passing through the midpoint MK1, a radius RK2<RK1 having the midpoint MK2. In the transverse plane Y-Y a stable dimeric joint chain is formed, with which the joint axis path of the midpoints MK1 and MK2 has a joint path radius R=RK1-RK2.
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