US 8,894,717 B2 · Surgical prostheses

Abstract

A prosthesis arranged to be coupled to a bone. The prosthesis comprises a substrate (2) having a surface (6). The surface (6) of the substrate (2) has a first area and a second area, the first area being treated such that osteointegration is promoted more than in the second area. The interface (12) between the first and second areas forms an alignment mark to assist alignment of the prosthesis relative to a bone. The prosthesis is arranged to be at least partially inserted into a bone cavity such that the position of the alignment mark relative to the bone cavity is indicative of the angle of insertion of the prosthesis or the alignment mark provides a position reference for determining the implanted position of the prosthesis in the cavity. A method of manufacturing the prosthesis and a method of implanting the prosthesis are also provided.

Claims12

Dependent claims

A cup arranged to be inserted into a bone cavity and contact bone tissue, the cup comprising:

a substrate having a convex surface, an apex and a rim;
wherein the convex surface has a first area that includes an area about the apex, and a second area, the second area having at least a first interruption and a second interruption, at least the first area being configured to promote osseointegration, the second area having a first portion defined on one side by the rim and another side by the first interruption, the first portion configured to promote osseointegration to a lesser extent than the first area;
wherein the second interruption is spaced from the first interruption and wherein each of the first interruption and the second interruption extends across portions of the convex surface of the substrate at predetermined angles relative to the rim, and wherein at least one of the first interruption and the second interruption extends from the rim at a first location along an arc.

Dependencies are inferred from the claim text.

Surgical prostheses

Life of this patent

Surgical prostheses

Life of this patent

Abstract

Claims12