A HIP PROSTHESIS COMPRISING A SHAFT WHICH IS TO BE ANCHORED IN THE MEDULLARY CANAL OF THE FEMUR

摘要

The present invention relates to a hip prosthesis comprising a shaft which is to be anchored in the medullary canal of the femur and whose distal portion, which is to be anchored, in the diaphysis, has a core cross-section which tapers toward the end and which, at least on the lateral side and the medial side, has longitudinal ribs whose height increases from proximal to distal, characterized in that the shaft core cross- section at a distance of 1 cm from the distal end is rectangular, with an axis ratio of at 'least 1.5, and, at least near its distal end, has a rib on each of its two lateral edges, the height of which rib is on average under 2 mm, the boundary of the shaft core cross- section between the two ribs located on the lateral edges not protruding further laterally than these.