Modular femoral components for knee arthroplasty
AssigneeZimmer, Inc.
InventorsDaniel F. Justin, E. Marlowe Goble
Life of this patent
Estimating the term…
Abstract
A femoral knee prosthesis system for resurfacing a resected articular surface at the distal end of a femur includes a femoral component adapted to mate with the resected articular surface; and an attachment member. The interior surface of the femoral component is configured to connect to the first attachment member when the femoral component is mated on the resected articular surface of the femur and when the first attachment member is passed through the medial side or the lateral side of the resected articular surface. The femoral component is available in one-piece and two-piece systems. Mating femoral components (e.g., tapered or with lips that interlock with grooves) are also disclosed.
Claims22
1-26. (canceled)
A femoral component of a knee prosthesis for resurfacing a resected articular surface at the distal end of a femur, the femoral component comprising:
- a main body having an interior surface and an opposing articulating surface each extending between a lateral side and a medial side, the interior surface having a substantially U-shaped transverse cross section;
- and
- at least one lip projecting inwardly from an end of the interior surface of the body.
A method comprising:
- resecting an articulating surface at a distal end of a femur so as to form a resected articular surface having an anterior surface and a posterior surface each extending between a lateral side and a medial side, at least one of the anterior surface and posterior surface having a groove therein;
- and
- sliding a femoral component onto the resected articular surface, a lip of the femoral component mating with the groove, the femoral component being slid along one of a path extending medial to lateral, and a path extending lateral to medial.
A femoral component of a knee prosthesis for resurfacing a resected articular surface at the distal end of a femur, the femoral component comprising:
- a lateral condyle having a substantially U-shaped configuration and having an interior surface and an opposing exterior surface each extending between an anterior end and an opposing posterior end;
- a medial condyle having a substantially U-shaped configuration and having an interior surface and an opposing exterior surface each extending between an anterior end and an opposing posterior end, the medial condyle being connected to the lateral condyle;
- a first engagement lip projecting from the interior surface of at least one of the lateral condyle and the medial condyle at the anterior end thereof;
- and
- a second engagement lip projecting from the interior surface of at least one of the lateral condyle and medial condyle at the posterior end thereof.
A method comprising:
- resecting an articulating surface at a distal end of a femur so as to form a resected articular surface having an anterior surface and a posterior surface each extending between a lateral side and a medial side, a first groove being formed along the anterior surface and a second groove being formed along the posterior surface;
- and
- sliding a femoral component onto the resected articular surface, the femoral component having an interior surface and an opposing articulating surface, the femoral component being slid along one of a path extending medial to lateral and a path extending lateral to medial, such that a first lip projecting from the interior surface of the femoral component is received within the first channel and a second lip projecting from the interior surface of the femoral component is received within the second channel.
34-60. (canceled)
Dependencies are inferred from the claim text.