Patent ID: 8603182
Filing Date: 2013-12-10
Classification: A61F

Abstract:
1. A bipolar hip prosthesis that in use receives a femoral head component, the bipolar hip prosthesis comprising: (a) a bipolar shell having an outer surface and an inner cavity that meet at a portal surface; (b) a polyethylene liner that fits within the inner cavity, the liner comprising an outer surface and an inner surface that meet at an interface surface, wherein the interface surface does not extend to the portal surface of the shell, wherein at least a portion of the polyethylene liner is cross-linked; and (c) a locking system located entirely within the inner cavity of the shell between the liner interface surface and the shell portal surface, the locking system adapted to secure a femoral head component within the shell and comprising an outer surface and a capture surface, wherein the capture surface comprises a bearing surface for the femoral head component and is adapted to provide clearance for a femoral neck or stem component in use,