Patent ID: 7534271

Claim:
A prosthesis adapted for implantation against a resected surface on a proximal end of a femur and inside of an intramedullary cavity of the femur, the prosthesis comprising: a femoral head component comprising an external bearing surface; and a femoral stem component comprising: a neck portion comprising a proximal portion, engagable with the femoral head component, and a distal neck body; a flange portion distal and adjacent to the neck portion, the flange portion comprising a bottom surface; a transitional body region adjacent to the bottom surface of the flange portion and extending from the distal neck body; and an elongated stem portion extending distally from the transitional body region and having a longitudinal axis oriented at an acute angle from the bottom surface of the flange portion; wherein the transitional body region is shaped to flex such that, during a normal gait cycle, the bottom surface exerts a significant compressive load on the resected surface of the femur.