Method of manufacturing femoral knee implant

摘要

A method of manufacturing a distal femoral knee prosthesis includes the initial step of forming a rough prosthesis workpiece member that has the approximate size and shape of a final polished distal femoral prosthesis. The rough prosthesis workpiece member can be a casting, forging or a rough machined part. The prosthesis member is then attached to a fixator and movably supported adjacent a rotary grinder. Relative motion between the rotary grinder and the prosthesis is controlled with a computer. An articular surface of the prosthesis is shaped by engaging the prosthesis with the rotary grinder. The workpiece is primarily polished to remove "scallops" that form on the outer surface during a shaping with the rotary grinder. The prosthesis workpiece member is then secondarily polished until the articular surface provides a highly polished mirror finish.