Prosthesis with feature aligned to trabeculae
AssigneeDePuy Orthopaedics, Inc.
InventorsJon C. Serbousek, Thomas S. Camino, J. Brock Vanmeter, Marc G. Weissman
Life of this patent
Estimating the term…
Abstract
A ball and socket joint prosthesis (10) for use in arthroplasty is provided. The prosthesis includes a body (32) for implantation at least partially within the medullary canal (24) of a long bone (12). The long bone defines trabeculae (60) in the proximal cancellous bone (22) and lamellae (71) in the cortical bone (65). The body includes a proximal portion (52) thereof and a distal portion (54). The proximal portion has a medial periphery (69) and includes surface features (64) on a substantial portion of its proximal portion. The surface features are positioned to optimally transfer load from the prosthesis to the long bone.
Claims27
A ball and socket joint prosthesis for use in arthroplasty comprising:
- a body for implantation at least partially within the medullary canal of a long bone defining trabeculae in the proximal cancellous bone thereof and defining lamellae in the cortical bone thereof, said body including a proximal portion thereof and a distal portion thereof, said proximal portion having a medial periphery thereof, said proximal portion including surface features thereof on a substantial portion of the periphery of said proximal portion, said surface features being positioned to optimally transfer load from the prosthesis to the long bone.
A hip joint prosthesis for use in arthroplasty comprising:
- a body for implantation at least partially within the medullary canal of a long bone defining trabeculae in the proximal cancellous bone thereof and defining lamellae in the cortical bone thereof, said body including a proximal portion thereof and a distal portion thereof, said proximal portion having a medial periphery thereof, said proximal portion including a plurality of ribs extending from a substantial portion of the periphery of said proximal portion, said ribs being elongated in a first direction and being positioned so that the first direction of said ribs are from about 70 degrees to about 110 degrees with respect to at least one of the trabeculae in the proximal cancellous bone, the normal lamellae in the cortical bone and the medial periphery of the proximal portion of said body.
A joint prosthesis for use in arthroplasty comprising:
- a body for implantation at least partially within the medullary canal of a long bone defining trabeculae in the proximal cancellous bone thereof and defining lamellae in the cortical bone thereof, said body including a proximal portion thereof and a distal portion thereof, said proximal portion having a medial periphery thereof, said proximal portion including surface features thereof on a substantial portion of the periphery of said proximal portion, said surface features being positioned to optimally transfer load from the prosthesis to the long bone.
A stem for use in a joint prosthesis for implantation at least partially within the medullary canal of a long bone defining trabeculae in the proximal cancellous bone thereof and defining lamellae in the cortical bone thereof, comprising:
- a distal portion thereof;
- and
- a proximal portion thereof, said proximal portion having a medial periphery thereof, said proximal portion including surface features thereof on a substantial portion of the periphery of said proximal portion, said surface features being positioned to optimally transfer load from the prosthesis to the long bone.
A method for producing a joint prosthesis for use in arthroplasty comprising:
- providing a body including a proximal portion thereof and a distal portion thereof, the proximal portion having a medial periphery thereof;
- placing surface features on a substantial portion of the periphery of the proximal portion of the body;
- positioning the surface features to optimally transfer load from the prosthesis to the long bone;
- and
- implanting the prosthesis at least partially within the medullary canal of a long bone.
Dependencies are inferred from the claim text.