机器人全膝关节置换术中股骨头中心的求法

Resolution for the Center of Caput Ossis Femoris in Robot Total Knee Replacement Operation

介绍用于机器人全膝关节置换术的无CT定位方法中股骨头中心坐标的求解方法。其主要思想是利用股骨长度不变的事 实,将确定股骨头中心的问题抽象成已知球面若干点求解球心的几何模型,将用数值方法求出的球心坐标的最优解作为 股骨头中心的坐标。同时还简要介绍了无CT定位方法的主要后续步骤。

This paper describes a method of resolution for a caput ossis femoris in non-CT locating in robot total knee replacement operation. The main idea is based on the fact that the length of femur is unchanged. We can abstract this problem to a geometrical model in which the center of a sphere can be easily worked out with a few known spherical points. This optimized result of the spherical center obtained by the numerical method, can be looked on as the coordinate of the caput ossis femoris. Other main processes of the non-CT locating method are aslo briefly introduced here.