Convertible pre-partial knee replacement
AssigneeBiomet Manufacturing, LLC
InventorsRussell Lloyd, Brian May
Life of this patent
Estimating the term…
Abstract
A unicondylar resurfacing femoral component including a metallic base member and a polymeric articulation member. The metallic base member includes a main body and a retention member extending from the main body configured to be secured within a condyle of a femur. The polymeric articulation member is coupled to the main body of the metallic base member and includes an articulation surface configured to articulate directly against a planar surface of a metallic tibial component
Claims20
A unicondylar resurfacing femoral component comprising:
- a metallic base member including a main body and a retention member extending from the main body configured to be secured within a condyle of a femur;
- and
- a polymeric articulation member coupled to the main body of the metallic base member and including an articulation surface configured to articulate directly against a planar surface of a metallic tibial component.
A unicondylar resurfacing femoral assembly comprising:
- a unicondylar resurfacing femoral component including a metallic base member and a polymeric articulation member;
- and
- a tibial component including a tibial tray with a planar, superior articulating surface and a tibial retention member extending from an inferior surface of the tibial tray;
- wherein the planar, superior articulating surface of the tibial component is configured to directly articulate with the polymeric articulation member;
- and
- wherein the planar, superior articulating surface of the tibial component is further configured to articulate with, by way of a slidable bearing seated on the superior articulating surface, a revision femoral component implanted in a femur in place of the unicondylar resurfacing femoral component after the unicondylar resurfacing femoral component has been removed from the femur.
The unicondylar resurfacing femoral assembly of 10, wherein the polymeric articulation member defines a thickness between an articulation surface thereof and an inner surface that abuts the metallic base member;
- and
- wherein the polymeric articulation member is selected from a plurality of different articulation members having different thicknesses.
A method for repairing a defect in a femur at a condyle thereof comprising:
- cutting the condyle at the defect to form an implant site;
- implanting a unicondylar resurfacing femoral component at the implant site in the condyle such that a metallic base member is secured within the condyle and a polymeric articulation member extends into a joint space defined between the femur and a tibia;
- preparing the tibia to receive a tibial component;
- and
- implanting the tibial component into the tibia, the tibial component including a planar, superior articulating surface;
- wherein the polymeric articulation member has a thickness sufficient to extend to, and directly articulate with, the superior articulating surface.
Dependencies are inferred from the claim text.