Patent ID: 8491664

Claim:
An apparatus for orienting a prosthetic femoral head relative to an acetabulum, comprising: a femoral stem configured to be received within the intramedullary canal of a femur; and a femoral head member extending from the femoral stem and further configured to be received in the acetabulum, the femoral head member further comprising a curved articulating surface and an indicia located on the curved articulating surface and configured to orient a relative position of the prosthetic femoral head to the acetabulum such that the indicia signifies proper relative position of the prosthetic femoral head in the acetabulum; and an acetabular component configured to be received in the acetabulum and to articulate with the curved articulating surface of the femoral head member; and wherein the indicia located on the curved articulating surface of the femoral head member is positioned in alignment with a feature of the acetabular component to signify the proper relative position of the prosthetic femoral head in the acetabulum; and wherein the femoral head member further comprises a plurality of indicia located on the curved articulating surface, such that one of the plurality of indicia signifies proper relative position of the femoral head in the acetabulum in a neutral position and another of the plurality of indicia signifies a proper relative position as the position of the femoral stem is rotated through its range of motion relative to the acetabulum.