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US 9,848,986 B2Granted
Joint replacement component with integrated fixation pads
AssigneeSmith & Nephew, Inc.
InventorsBob Jones, Vivek Pawar, Dean Hughes, Jason Jordan
Life of this patent
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Abstract
In one embodiment, a prosthetic component includes a plurality of fixation pads coupled to a body portion. The fixation pads may be formed of a first material suitable for attachment to bone, and the body portion may be formed of a second material different from the first material and suitable to provide a bearing surface for a joint.
Claims18
A prosthetic component, comprising:
- a body portion sized and configured to replace a portion of a bone in a joint, and including a bearing side and an opposite bone-facing side, wherein the body portion is formed of a first material, wherein the bone-facing side includes a plurality of bone-facing surfaces including a first bone-facing surface and a second bone-facing surface, and wherein the first bone-facing surface and the second bone-facing surface are angularly offset from one another;
- and
- a plurality of discrete fixation pads coupled to the bone-facing side, wherein each of the fixation pads includes an attachment surface configured for attachment to bone, wherein each of the fixation pads is formed of a second material having a greater rigidity than the first material;
- wherein each of the first material and the second material comprises a material selected from the group consisting of a polymeric material, a plastic material, a ceramic material, and a metallic material;
- wherein a first of the discrete fixation pads is coupled to the first bone-facing surface, and a second of the discrete fixation pads is coupled to the second bone-facing surface such that a gap is formed between the first fixation pad and the second fixation pad, the gap permitting flexing of the prosthetic component to alter the angular offset of the first bone-facing surface relative to the second bone-facing surface;
- and
- wherein the body portion is molded onto the fixation pads such that the fixation pads are fixedly coupled with the body portion.
4 more elements
A prosthetic component, comprising:
- a body sized and configured to replace a portion of a bone in a joint, the body including an outer surface and a recess configured to receive a resected bone, wherein the recess is defined at least in part by a plurality of bone-facing surfaces, and wherein the body is formed of a polymeric material;
- and
- a plurality of discrete fixation pads, wherein each fixation pad is coupled to a corresponding one of the bone-facing surfaces such that one or more gaps are formed between the plurality of discrete fixation pads, wherein each fixation pad is formed of a biocompatible metallic material and comprises a bone contacting surface configured for attachment to bone;
- wherein the body is molded onto the fixation pads such that the fixation pads are fixedly coupled with the body.
1 more element
A method, comprising:
- forming a plurality of fixation pads of a metallic material;
- forming a body of a polymeric material, wherein forming the body includes forming the body with a bearing surface, a first bone-facing surface, and a second bone-facing surface that is angularly offset from the first bone-facing surface, the polymeric material having a greater flexibility than the metallic material;
- attaching a first of the fixation pads to the first bone-facing surface;
- and
- attaching a second of the fixation pads to the second bone-facing surface such that a gap is formed between the first and second fixation pads;
- wherein the gap permits relative flexing of the first and second bone-facing surfaces;
- and
- wherein forming the body includes molding the polymeric material around the fixation pads, thereby attaching the first fixation pad and the second fixation pad to the first bone-facing surface and the second bone-facing surface, respectively.
5 more elements
Dependencies are inferred from the claim text.