Methods and systems for hip replacement

摘要

Methods and apparatus of the present invention provide for orthopaedic replacement of the hip while substantially preserving muscles and soft tissues around the hip joint resulting in reduced healing time and decreased risk of dislocation following the procedure. In an exemplary embodiment, an intramedullary rod 1502 is inserted longitudinally into the femur. A prosthetic femoral neck 3102 is then inserted from a point along the side of the patient's body and into the side of the femur and through a pre-existing lateral bore in the intramedullary rod 1502 and through the remainder of the femur to join the prosthetic femoral head 1102. The methods and apparatus include structures and techniques for fixing the prosthetic femoral neck 3102 in relation to the intramedullary rod 1502.

主权项

1. A method for hip arthroplasty, comprising:
fixing a prosthetic femoral head in a position adapted to be rotatable with respect to a patient's acetabulum; creating a bore in a patient's femur from a side of the patient's femur opposite the patient's acetabulum and extending in a direction toward the patient's acetabulum; joining an end of a prosthetic femoral neck to the prosthetic femoral head after advancing the end of the prosthetic femoral neck into the bore to engage the prosthetic femoral head; positioning an intramedullary rod in the patient's femur; and fixing the position of the prosthetic femoral neck with respect to the patient's femur by joining the prosthetic femoral neck to the intramedullary rod; wherein the fixing the position of the prosthetic femoral neck with respect to the femur comprises rotationally engaging the intramedullary rod to the prosthetic femoral neck; wherein the intramedullary rod includes a threaded neck fixation bore extending from a top side of the intramedullary rod toward a bottom side of the intramedullary rod aligned within the threaded bore; wherein the intramedullary rod further includes a tapered neck fixation bore extending from a proximal side of the intramedullary rod to a distal side of the intramedullary rod aligned within the tapered bore, and wherein the threaded bore and the tapered bore fix the prosthetic femoral neck relative to the intramedullary rod.