US 2009/0222007 A1 · MODULAR STEM EXTENSION

Abstract

The modular stem component may include a shaft portion, a head, and a sleeve. The shaft portion is configured for receipt within the intramedullary canal of a bone and the head is configured to receive another component of a modular prosthetic system, such as a femoral neck, thereon. In one exemplary embodiment, the head extends radially around at least a portion of the stem and includes a rib defining a flange extending therefrom. The sleeve, which is formed as an independent part of the modular stem component and is made at least partially of a highly porous biomaterial, includes opposing ends and has a bore extending therethrough. The bore is configured to facilitate sliding receipt of the sleeve on the head.

Claims19

Dependent claims

A modular prosthetic component configured for implantation within a bone, the modular prosthetic component comprising:

a stem having an elongate shaft portion defining a longitudinal axis;
a head extending from said stem, said head having a stop;
and
a sleeve dimensioned for receipt on said head, said sleeve formed at least partially from a highly porous biomaterial, said highly porous biomaterial allowing tissue ingrowth therein, said sleeve having an exterior surface, an interior surface defining an internal bore, and opposing ends connecting said exterior surface and said interior surface, said sleeve dimensioned for sliding receipt on said head in a first direction, wherein said stop limits movement of said sleeve in the first direction, whereby said sleeve is captured by said stop and the bone when said stem is implanted in the bone.

1 more element

Dependencies are inferred from the claim text.

Modular stem extension

Life of this patent

Modular stem extension

Life of this patent

Abstract

Claims19