In a prosthesis and method for manufacturing the same, the prosthesis has an outer articulating surface and an inner bone-contacting surface. The inner surface of the prosthesis has at least one osteo-integration zone with one or more surface formations integrally cast with the wall of the prosthesis. In some instances the prosthesis may be a femoral head prosthesis. To manufacture the prosthesis, a mold is prepared and the prosthesis is cast to include the surface formations.