Patent ID: 8647388

Claim:
An elbow prosthesis, the prosthesis comprising: an ulnar component having a bearing end and a stem, wherein the stem is coupled to the bearing end and extends in a distal direction from the bearing end, and wherein the bearing end comprises a bearing body, the bearing body having a bearing surface and a mating surface, the bearing surface is convex and configured as one of a spherical shape, an oval shape or an elliptical shape, and the mating surface is substantially planar; a humeral component having a holder end with at least one bearing member coupled to the holder end and a stem, wherein the stem extends in a proximal direction from the holder end; and a coupling mechanism, the coupling mechanism comprises the at least one bearing member, the bearing body, and the holder end, wherein the at least one bearing member is positioned within an opening disposed on a posterior aspect of the humeral component and the corresponding mating surface disposed on the bearing body; the bearing end is configured to be rotatably coupled within the holder end and articulate against the at least one bearing member; the bearing body further comprising a means for alignment with the at least one bearing member; and the means for alignment comprising at least one projection extending away from the bearing surface in at least one of a lateral or medial direction.