Patent ID: 7074241

Claim:
A prosthetic device comprising: (a) an acetabular shell comprising an internal concave surface adapted to receive a liner and an external surface adapted to be received in an acetabulum; and (b) an acetabular liner having: an internal concave surface adapted to receive the head of a femoral component, the concave surface having a periphery with an opening defined by an internal diameter and having a central axis; an external surface positioned on an opposing side of the liner from the internal concave surface and adapted to be received in the internal concave surface of the acetabular shell; and a rim located between the internal concave surface and the external surface of the liner, at least a portion of the rim comprising a variable angle chamfer surface comprising a plurality of variable angles, each variable angle defined as the angle at any point on or near the periphery of the liner internal diameter at which the surface of the chamfer is positioned relative to the center axis of the opening of the internal diameter of the liner.