Method for determining an outer surface of a femoral portion of a knee prosthesis

摘要

The method involves modeling a distal end of a femur associated with a knee in three dimensions to obtain a model of the distal end (10). The model is cut (20) according to planes passing by a common axis near to an instantaneous clevis pin of the knee. A trace of an external surface of the distal end of the femur is raised (30). A beam of direct curves is obtained (80) by raising the trace. The external surface is constructed (90) by interpolation of the direct curves. The modeling, cutting and raising steps are repeated for each individual in a sample of individuals.