The materials used for the replacement hip joints were usually metals such as titanium with the hip socket usually lined with plastic.

Anatomical modifications of the femur and or hip socket cause a slow buildup of damage to the cartilage.

This procedure involves replacing both the acetabulum (hip socket) and the head and neck of the femur.

These exercises focus on improving and maintaining a full range of motion of the femur within the hip socket.

The femoral epiphysis remains in the acetabulum (hip socket), while the metaphysis (end of the femur) move in an anterior direction with external rotation.