An improved prosthesis construction in a femoral-side hip joint replacement device of the type having an elongate curved stem held within an intramedullary cavity in a femur, and a neck supporting a ball-like joint member at the femur's proximal end. The construction includes an elongate polymer core...http://www.google.com.au/patents/US4750905?utm_source=gb-gplus-sharePatent US4750905 - Beam construction and method
