Systems and methods for compartmental replacement in a knee
First Claim
1. A femoral prosthesis system, comprising:
- a patellofemoral joint component defining (i) a patellofemoral bearing surface, (ii) a first rear surface opposite said patellofemoral bearing surface, (iii) a first peripheral surface extending between said patellofemoral bearing surface and said first rear surface, (iv) a first passageway extending between said patellofemoral bearing surface and said first rear surface, and (v) a second passageway extending between said patellofemoral bearing surface and said first rear surface;
a medial condylar component defining (i) a medial condylar bearing surface, (ii) a second rear surface opposite said medial condylar bearing surface, (iii) a second peripheral surface extending between said medial condylar bearing surface and said second rear surface, and (iv) a first fastener recess;
a lateral condylar component defining (i) a lateral condylar bearing surface, (ii) a third rear surface opposite said lateral bearing surface, (iii) a third peripheral surface extending between said lateral condylar bearing surface and said third rear surface, and (iv) a second fastener recess;
a first fastener extending through said first passageway of said patellofemoral joint component and into said first fastener recess of said medial condylar component; and
a second fastener extending through said second passageway of said patellofemoral joint component and into said second fastener recess of said lateral condylar component.
1 Assignment
0 Petitions
Accused Products
Abstract
A knee replacement system provides a knee implant that may be used to more accurately replicate the diameter of a natural knee. In one embodiment, a patellofemoral component is connected to the posterior portion of a condylar component by screws that pass through the femur allowing the patellofemoral component and the condylar component to be torqued against opposing sides of the femur. Two additional screws are used to connect the patellofemoral component to an anterior portion of the condylar component. A gap may be left between the patellofemoral component and the anterior portion of the condylar component if needed to provide precise replication of the diameter of the natural knee from the patellofemoral component to the condylar component.
345 Citations
16 Claims
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1. A femoral prosthesis system, comprising:
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a patellofemoral joint component defining (i) a patellofemoral bearing surface, (ii) a first rear surface opposite said patellofemoral bearing surface, (iii) a first peripheral surface extending between said patellofemoral bearing surface and said first rear surface, (iv) a first passageway extending between said patellofemoral bearing surface and said first rear surface, and (v) a second passageway extending between said patellofemoral bearing surface and said first rear surface; a medial condylar component defining (i) a medial condylar bearing surface, (ii) a second rear surface opposite said medial condylar bearing surface, (iii) a second peripheral surface extending between said medial condylar bearing surface and said second rear surface, and (iv) a first fastener recess; a lateral condylar component defining (i) a lateral condylar bearing surface, (ii) a third rear surface opposite said lateral bearing surface, (iii) a third peripheral surface extending between said lateral condylar bearing surface and said third rear surface, and (iv) a second fastener recess; a first fastener extending through said first passageway of said patellofemoral joint component and into said first fastener recess of said medial condylar component; and a second fastener extending through said second passageway of said patellofemoral joint component and into said second fastener recess of said lateral condylar component. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A femoral prosthesis system, comprising:
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a patellofemoral joint component defining (i) a patellofemoral bearing surface, (ii) a first rear surface opposite said patellofemoral bearing surface, (iii) a first peripheral surface extending between said patellofemoral bearing surface and said first rear surface, (iv) a first passageway extending between said patellofemoral bearing surface and said first rear surface, and (v) a second passageway extending between said patellofemoral bearing surface and said first peripheral surface; a condylar component defining (i) a condylar bearing surface, (ii) a second rear surface opposite said condylar bearing surface, (iii) a second peripheral surface extending between said condylar bearing surface and said second rear surface, (iv) a first fastener recess, and (v) a second fastener recess; a first fastener extending through said first passageway of said patellofemoral joint component and into said first fastener recess of said condylar component; and a second fastener extending through said second passageway of said patellofemoral joint component and into said second fastener recess of said condylar component. - View Dependent Claims (8, 9)
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10. A femoral prosthesis system, comprising:
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a patellofemoral joint component defining (i) a patellofemoral bearing surface, (ii) a first rear surface opposite said patellofemoral bearing surface, (iii) a first peripheral surface extending between said patellofemoral bearing surface and said first rear surface, (iv) a first passageway extending between said patellofemoral bearing surface and said first rear surface, and (iv) a second passageway extending between said patellofemoral bearing surface and said first rear surface, and (v) a third passageway extending between said patellofemoral bearing surface and said first peripheral surface, and (v) a fourth passageway extending between said patellofemoral bearing surface and said first peripheral surface; a medial condylar component defining (i) a medial condylar bearing surface, (ii) a second rear surface opposite said medial condylar bearing surface, (iii) a second peripheral surface extending between said medial condylar bearing surface and said second rear surface, (iv) a first fastener recess, and (v) a second fastener recess; a lateral condylar component defining (i) a lateral condylar bearing surface, (ii) a third rear surface opposite said lateral condylar bearing surface, (iii) a second peripheral surface extending between said lateral condylar bearing surface and said third rear surface, (iv) a third fastener recess, and (v) a fourth fastener recess; a first fastener extending through said first passageway of said patellofemoral joint component and into said first fastener recess of said medial condylar component; a second fastener extending through said second passageway of said patellofemoral joint component and into said second fastener recess of said medial condylar component, a third fastener extending through said third passageway of said patellofemoral joint component and into said third fastener recess of said lateral condylar component; and a fourth fastener extending through said fourth passageway of said patellofemoral joint component and into said fourth fastener recess of said lateral condylar component. - View Dependent Claims (11)
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12. A femoral prosthesis system, comprising:
- a patellofemoral joint component defining (i) a patellofemoral bearing surface, (ii) a first rear surface opposite said patellofemoral bearing surface, (iii) a first peripheral surface extending between said patellofemoral bearing surface and said first rear surface, (iv) a first passageway extending between said patellofemoral bearing surface and said first rear surface, and (v) a second passageway extending between said patellofemoral bearing surface and said first peripheral surface;
a condylar component defining (i) a condylar bearing surface, (ii) a second rear surface opposite said condylar bearing surface, (iii) a second peripheral surface extending between said condylar bearing surface and said second rear surface, (iv) a first fastener recess having a first fastener opening defined in said second rear surface, and (v) a second fastener recess having a second fastener opening defined in said second peripheral surface; and a first fastener extending through said first passageway of said patellofemoral joint component and into said first fastener recess of said condylar component through said first opening; and a second fastener extending through said second passageway of said patellofemoral joint component and into said second fastener recess of said condylar component through said second fastener opening. - View Dependent Claims (13, 14, 15, 16)
- a patellofemoral joint component defining (i) a patellofemoral bearing surface, (ii) a first rear surface opposite said patellofemoral bearing surface, (iii) a first peripheral surface extending between said patellofemoral bearing surface and said first rear surface, (iv) a first passageway extending between said patellofemoral bearing surface and said first rear surface, and (v) a second passageway extending between said patellofemoral bearing surface and said first peripheral surface;
Specification