Patent ID: 7641699

Claim:
A novel hip replacement implant system the system comprising: a ball assembly comprising a solid ball and a separate trunnion, said trunnion having a first end and a second end and said ball having an upper curved surface and a lower flat surface, said lower flat surface defining an inwardly directed ball trunnion receptacle, said ball trunnion receptacle being complementary sized and configured to receive said first end of said trunnion; and a calcar implant element configured to be securely implanted into the calcar bone of the femoral neck of a subject, said calcar implant element having a first end and a second end, said first end defining a calcar implant trunnion receptacle sized and configured to receive said second end of said trunnion; wherein said calcar implant element is sized and configured to be implanted in the upper portion of the femoral neck calcar bone so as to leave intact the load transferring calcar bone of the femur.