According to one example, a femoral prosthesis system (12) is provided thathas a plurality of sizing options using twofamilies of femoral prostheses (302, 304) is disclosed. The second family offemoral prostheses can have a predetermined increase infemoral posterior condylar offset (308) relative to the first family offemoral prosthesis. In one example, the second family of femoralprostheses can have the predetermined increase in the femoral posteriorcondylar offset while maintaining substantially a same femoralmedial-lateral condylar extent (306) relative to a comparably sized one of thefirst family of femoral prostheses.
