Patent ID: 8070821
Filing Date: 2011-12-06
Classification: A61F,B33Y

Abstract:
1. A hybrid prosthetic femoral component comprising: a body having an outer bearing surface for sliding engagement with a tibial bearing, the outer surface includes an anteriorly facing surface, a distally facing surface and a posteriorly facing surface; the body having an inner surface for engaging a prepared distal femur, said body inner surface having a proximally facing surface opposite the body distally facing outer surface for mounting on a distal femur surface, a body posteriorly facing inner surface opposite the body outer anteriorly facing surface for mounting on an anterior femur surface and body inner anteriorly facing surface opposite the body posteriorly facing outer surface for directly contacting a posterior femur surface, wherein said body inner anteriorly facing surface for directly contacting the posterior femur surface has a first non-waffle pattern porous structure for allowing tissue ingrowth and said inner posteriorly facing and inner proximally facing surfaces for respectively mounting on the anterior and distal femur surface has a second non-porous waffle pattern structure for contacting bone cement; and the inner surface of the body further comprising a posteriorly facing chamfered surface for mounting on an anterior chamfered surface of the femur and an anteriorly facing chamfered surface for contacting a posterior chamfered inner surface of the femur wherein said anteriorly facing chamfered surface of the hybrid prosthetic femoral component body includes said first porous structure and said posteriorly facing chamfered inner surface includes said second non-porous waffle pattern structure.