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US 12,138,172 B2Granted
Inset/onlay glenoid, porous coated convertible glenoid, and humeral heads with textured undersides
AssigneeShoulder Innovations, Inc.
InventorsRobert J. Ball, Donald E. Running
Life of this patent
Estimating the term…
Abstract
Disclosed are prosthesis systems and methods that provide porous fixation rings by which the articulating surfaces of the implant can be exchanged such that the anatomic surfaces can be converted to reverse surfaces, while not exchanging the fixation components. Also disclosed herein are methods by which the surgeon can implant an inset anatomic articulating glenoid implant whereby at a later date, can remove the anatomic articulating surface and replace it with a reverse articulating surface such that the primary means of fixation remains well fixed in the glenoid fossa at the moment of articular exchange.
Claims23
A method of performing a reversible anatomic shoulder replacement procedure, comprising:
- reaming a cavity into a glenoid;
- and
- inserting a fixation ring and an anatomic glenoid articular implant into the glenoid cavity, the anatomic glenoid articular implant comprising:
- a medial surface configured to face the glenoid cavity;
- a central peg extending medially from the medial surface, wherein the central peg is configured to extend medially further than the fixation ring when the anatomic glenoid articular implant is inserted into the fixation ring;
- a lateral surface configured to articulate with a humeral component;
- a medial peripheral edge extending from the medial surface towards the lateral surface;
- a lateral peripheral edge extending from the lateral surface towards the medial surface, the medial peripheral edge comprising a substantially constant diameter that is less than a substantially constant diameter of the lateral peripheral edge, wherein the substantially constant diameter of the medial peripheral edge is about 1 to 2 mm less than the substantially constant diameter of the lateral peripheral edge;
- and
- a ledge extending from the medial peripheral edge to the lateral peripheral edge, and configured to abut a lateral-facing surface of the fixation ring,
- wherein the fixation ring further comprises an inner diameter sized and configured to circumscribe the medial peripheral edge of the implant.
8 more elements
A reversible anatomic shoulder replacement system, comprising:
- a fixation ring configured to be positioned within a glenoid cavity, the fixation ring comprising a peripheral edge and an outer diameter;
- and
- an anatomic articular implant comprising:
- a medial surface configured to face the glenoid cavity, wherein the medial surface is further configured to contact bone or cement covered bone when the anatomic articular implant is inserted into the fixation ring;
- a central peg extending medially from the medial surface;
- a lateral surface configured to articulate with a humeral component;
- a medial peripheral edge extending from the medial surface towards the lateral surface;
- a lateral peripheral edge extending from the lateral surface towards the medial surface, the medial peripheral edge comprising a substantially constant diameter that is less than a substantially constant diameter of the lateral peripheral edge, wherein the substantially constant diameter of the medial peripheral edge is about 1 to 2 mm less than the substantially constant diameter of the lateral peripheral edge;
- and
- a ledge extending from the medial peripheral edge to the lateral peripheral edge, and configured to abut a lateral-facing surface of the fixation ring,
- wherein the fixation ring further comprises an inner diameter sized and configured to circumscribe the medial peripheral edge of the implant, and
- wherein the fixation ring is configured to be at least partially implanted within the glenoid cavity.
9 more elements
A reversible anatomic shoulder replacement system, comprising:
- a fixation ring configured to be positioned within a glenoid cavity, the fixation ring comprising a peripheral edge and an outer diameter;
- and
- an anatomic articular implant comprising:
- a medial surface configured to face the glenoid cavity;
- a central peg extending medially from the medial surface, wherein the central peg is configured to extend medially further than the fixation ring when the anatomic articular implant is inserted into the fixation ring;
- a lateral surface configured to articulate with a humeral component;
- a medial peripheral edge extending from the medial surface towards the lateral surface,
- a lateral peripheral edge extending from the lateral surface towards the medial surface, the medial peripheral edge comprising a substantially constant diameter that is less than a substantially constant diameter of the lateral peripheral edge, wherein the substantially constant diameter of the medial peripheral edge is about 1 to 2 mm less than the substantially constant diameter of the lateral peripheral edge;
- and
- a ledge extending from the medial peripheral edge to the lateral peripheral edge, and configured to abut a lateral-facing surface of the fixation ring,
- wherein the fixation ring further comprises an inner diameter sized and configured to circumscribe the medial peripheral edge of the implant, and
- wherein the fixation ring is configured to be at least partially implanted within the glenoid cavity.
9 more elements
Dependencies are inferred from the claim text.