FEMORAL STEM FOR TOTAL HIP REPLACEMENT AND TOTAL HIP REPLACEMENT INCLUDING IT

摘要

PPROBLEM TO BE SOLVED: To provide a femoral stem for total hip replacement, suitable for treatment for femoral neck region fracture requiring fixing of a greater trochanter and having strong fixing force for the greater trochanter. PSOLUTION: This femoral stem includes: a stem member integrally or separably provided with a stem distal part inserted and fixed to a pulp chamber of the femoral and a stem proximal part having a neck part to which an artificial bone head is fitted and fixed to the proximal end of the stem distal part; a plate mounting part detachably fitted to the apex of the stem proximal part; and a greater trochanter plate secured at a fixed angle to the plate mounting part or secured at a controllable angle to press the greater trochanter from above. In this femoral stem, the greater trochanter plate is fixed to the femoral stem, so that the fixing force of the greater trochanter is strong and stable fixing is achieved. Further the fixing position of the greater trochanter plate is the apex of the stem proximal part and the greater trochanter plate covers the top of the greater trochanter in fixing the greater trochanter, whereby upward shifting of the greater trochanter due to gluteus medius muscle can be effectively restrained. PCOPYRIGHT: (C)2007,JPO&INPIT