Polymer composite implant and method of making the same.

摘要

This invention provides for an acetabular cup and the manufacturing of an acetabular cup implant formed from a composite of polymer materials such that the articulating surface of the implant is 100% ultra high molecular weight poly ethylene (UHMWPE) and the bone engaging surface of the cup contains a significant amount of poly methyl methacrylate (PMMA). The cup would consist of at least two zones. Zone 1 forming the articulating surface and zone two extending from the zone 1 to the bone engaging surface. Preferably, the zone 1 would consist of UHMWPE and would extend a predetermined thickness from the articulating surface. Zone 2 would preferably consist of a mixture of UHMWPE and PMMA dry blended before molding. A third zone may abut zone 2 and consist of PMMA. <IMAGE>