PLATE-LIKE SHAFT FOR THE FIXATION OF A HIP JOINT PROSTHESIS IN THE FEMUR

摘要

The medial narrow side (4) of the shaft plate (1) has the path of a hyperbola whose vertex lies at the point of intersection (9) of the arc with the edge plane (5) of the prosthesis neck, and of which one hyperbola branch tangentially touches the medial narrow side of the shaft. …This design affords an improved adaptation of the shape of the shaft to the anatomical conditions in the area of the calcar arc. ……