Sigmoid Notch Implant
AssigneeMayo Foundation for Medical Research and Education
InventorsWilliam P. Cooney, III, Richard A. Berger, David A. Leibel
Life of this patent
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Abstract
A sigmoid notch resurfacing prosthesis for application to the sigmoid notch of the distal radius. The sigmoid notch prosthesis generally includes a saddle and a radius portion for attachment to the distal radius. The saddle may be formed from ultra high molecular weight polyethylene or another durable self-lubricating material. The saddle includes an at least partially concave contoured depression having rounded edges that is securable to the radius portion. The saddle may be secured by a sliding notch snap fit design. The prosthesis may be adapted for articulation with the natural head of the ulna or with an ulnar head prosthesis that has replaced the ulnar head.
Claims20
A prosthesis sized and configured for implantation at the distal end of a radius bone, the prosthesis comprising:
- a radial component comprising a first side having a stem extending therefrom, the stem configured for insertion into the distal end of the radius bone;
- and
- an articular component securable to a second side of the radial component, the articular component comprising an articular face having a contour defining a convex portion and a concave portion along a longitudinal direction.
A method for distal radius arthroplasty comprising:
- implanting a prosthesis at the distal end of a radius bone, the prosthesis comprising:
- a radial component comprising a first side having a stem extending therefrom, the stem configured for insertion into the distal end of the radius bone;
- and
- an articular component securable to a second side of the radial component, the articular component comprising an articular face having a contour defining a convex portion and a concave portion along a longitudinal direction.
Dependencies are inferred from the claim text.