Femoral heads, mobile inserts, acetabular components, and modular junctions for orthopedic implants and methods of using femoral heads, mobile insets, acetabular components, and modular junctions for orthopedic implants

An orthopedic implant comprising:

• a femoral head implant that includes a portion of an outer surface thereof having a peripheral portion that is contoured so as to achieve an inward shift of the outer surface relative to an overall spherical geometry of the femoral head implant;
• wherein the femoral head implant has a femoral head rim comprising an edge or surface marking an end of a femoral head articular surface of the femoral head implant;
• wherein the femoral head implant has a femoral head axis defined by a reference line passing through a center of the overall spherical geometry of the femoral head implant to a geometric center of the femoral head rim of the femoral head implant;
• and
• wherein the portion that is contoured extends to the femoral head rim, and the inward shift is asymmetric around the femoral head axis of the femoral head implant, and may be restricted to limited range of azimuth angle measured around the femoral head axis.

An orthopedic implant, comprising:

• a mobile insert having an inner surface and an outer surface, the outer surface having a peripheral portion that is contoured so as to achieve an inward shift of the outer surface relative to an overall spherical geometry of the mobile insert;
• wherein the mobile insert has a mobile insert rim comprising an edge or surface marking an end of an articular surface of the mobile insert;
• and
• wherein the peripheral portion that is contoured extends to the mobile insert rim.