Orthopaedic implants and methods
AssigneeSmith & Nephew, Inc.
InventorRyan Lloyd Landon
Life of this patent
Estimating the term…
Abstract
There is provided a tibial component comprising: a tibial tray with an inferior side; and a support member connected to the inferior side of the tibial tray, the support member having a stem portion, the support member further comprising at least one opening. In one embodiment, the at least one opening is constructed and arranged to receive a sawblade or an osteotome. In another embodiment, the at least one opening is comprised of solid material but is radio-lucent. In yet another embodiment, the at least one opening is comprised of solid material and is frangible.
Claims15
A tibial component comprising:
- a tibial tray with a superior side and a planar inferior side;
- a support member extending from the planar inferior side of the tibial tray, the support member having a stem portion extending from the planar inferior side of the tibial tray, the support member further including at least two arms that are angled relative to one another, each of the arms defining an opening;
- wherein the planar inferior side includes a porous coating including a plurality of protrusions, the plurality of protrusions occupying between 10% and 60% of an overall surface area of the planar inferior surface;
- wherein the tibial tray and the support member are monolithic;
- and
- wherein the at least two arms extend posteriorly and outwardly from a mid-point of the stem portion, and the at least two arms curve to connect to the inferior side of the tibial tray to form the openings.
A tibial component comprising:
- a tibial tray with a superior side and an inferior side;
- a support member extending from the inferior side of the tibial tray, the support member comprising:
- a stem portion extending from the inferior side of the tibial tray, wherein the stem portion is located anteriorly on the tibial tray, the stem portion has a proximal end and a distal end, and the proximal end is connected to the inferior side of the tibial tray;
- and
- at least two arms that are angled relative to one another, each of the arms defining an opening, wherein the openings are located adjacent the inferior side of the tibial tray and are spaced apart, the at least two arms extend posteriorly and outwardly from a mid-point of the stem portion, and the at least two arms curve to connect to the inferior side of the tibial tray to form the openings;
- wherein the stem portion comprises an upper portion that is blended to the at least two arms and
- wherein the inferior side includes a porous coating including a plurality of protrusions, the plurality of protrusions occupying between 10% and 60% of an overall surface area of the planar inferior surface.
Dependencies are inferred from the claim text.