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US 8,066,777 B2Granted
Method and apparatus for wrist arthroplasty
AssigneeBiomet Manufacturing, LLC
InventorsAndrew K. Palmer, Nathan A. Winslow, Thomas M. Vanasse
Life of this patent
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Abstract
A wrist prosthesis system to replace at least a portion of a bone of a wrist of a patient. The system includes a carpal implant to replace at least a portion of a carpal bone of a carpal complex of the patient. The carpal implant includes a base and an augment that replaces at least a portion of the carpal bone. The augment is removably coupled to the base.
Claims14
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.
5 more elements
A wrist prosthesis system to replace a portion of an ulna, comprising:
- a stem member operable to be implanted into an intramedullary canal of an ulna;
- a stage member extending from the stem member and exterior to the ulna;
- a bearing member having a compound articulation surface operable to articulate relative to both a carpal bone complex region and a distal region of a radius bone, the compound articulation surface includes a first convex bearing surface operable to articulate relative to the distal radial region and a second convex bearing surface operable to articulate relative to the carpal region;
- and
- a soft tissue connection region formed by the bearing member, said soft tissue connection region defining a passage operable to accept a suture when the bearing is coupled to the stage member;
- wherein the soft tissue connection region is capable to be attached to a soft tissue portion naturally attached to the lateral ulna 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.
4 more elements
Dependencies are inferred from the claim text.