Methodology for 3D femur approximate model generation

Abstract

This paper deals with a problem of the post-operative results of the human knee anterior cruciate ligament reconstruction verification. It is emphasized that mentioned verification depends, mostly, on the angle and position of the screw which is built-in the human femur. For this purpose the methodology and appropriate software system for generation of the approximate 3D model for the femur and screw, built in it, are developed. It is necessary for exact determination of the o'clock position, based on the X-ray images. A hypothesis that femur's 3D model approximation could be done by the "method of ellipses", was assumed. This hypothesis is based on the human knee X-ray images and the special view of the Blumensaat's-line. Software solution is developed for AutoCAD system, by application of the C++ development library ObjectARX (AutoCAD Runtime eXtensions).