A femoral component of a hip joint endoprosthesis is disclosed, which comprises a shaft whose cross-section increases gradually from the distal end of the shaft towards its proximal end and is extended at the proximal end of the shaft in the mediolateral direction to form an oval. To improve the retention of the femoral component within a natural femur bone, the cross-section of the shaft increases in the ventrodorsal direction towards the end of the shaft in several steps, whose mediolateral width increases from the distal step edge towards the proximal end of the shaft. IMAGE
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