Patent ID: 8066777

Claim:
A wrist prosthesis system to replace a portion of an ulna, comprising: a stage member operable to extend from a distal end of an ulna; a bearing attachment member operably associated with the stage member; a bearing member having a compound articulation surface to articulate with at least a distal portion and a carpal portion of the radius, the compound articulation surface includes a first bulbous surface operable to articulate relative to the distal radial region and a second bulbous surface operable to articulate relative to the carpal region; a stage mounting region of the bearing member operable with the bearing attachment member to interconnect the stage member and the bearing member; and a soft tissue attachment region in at least one of the stage member and the bearing member, the soft tissue attachment region defining a passage operable to accept a suture when the bearing is coupled to the stage member; wherein the bearing member and the stage member are connected during an operative procedure wherein the stage member includes an extended portion; and wherein the extended portion extends at an angle less than 180 degrees relative to a stage surface of the stage member.