Elongated femoral component
First Claim
1. A knee joint prosthesis system adapted to replace the articulating knee portion of a femur and a tibia, the femur having a resected engagement surface, said knee joint prosthesis system comprising:
- a first femoral component having a first femoral engagement region and at least a first condylar portion having a first femoral bearing surface, said first femoral engagement region operable to engage the resected engagement surface of the femur and said first condylar portion including a first posterior region having a first thickness; and
a second femoral component having a second femoral engagement region and at least a second condylar portion having a second femoral bearing surface, said second femoral engagement region operable to engage the resected engagement surface of the femur and said second condylar portion including a second posterior region having a second thickness, wherein said second thickness is larger than said first thickness and said first femoral engagement region is substantially the same as said second femoral engagement region, wherein said first femoral component has an outer anterior to posterior length that is less than an outer anterior to posterior length of said second femoral component, whereby a surgeon may select one of said first femoral component and said second femoral component for attachment to the femur.
6 Assignments
0 Petitions
Accused Products
Abstract
The invention relates to a knee joint prosthesis system adapted to replace the articulating knee portion of a femur and a tibia. The knee joint prosthesis system includes a first femoral component and a second femoral component. The first femoral component includes a first femoral engagement region and a first condylar portion having a first femoral bearing surface. The first femoral engagement region is operable to engage a resecting engagement surface of the femur and the first condylar portion includes a first posterior region having a first thickness. The second femoral component includes a second femoral engagement region and a second condylar portion having a second femoral bearing surface. The second femoral engagement region is operable to engage the resected engagement surface of the femur and the second condylar portion includes a second posterior region having a second thickness. The second thickness is larger than the first thickness and the first femoral engagement region is substantially the same as the second femoral engagement region, whereby a surgeon may select either the first femoral component or the second femoral component for attachment to the femur.
-
Citations
18 Claims
-
1. A knee joint prosthesis system adapted to replace the articulating knee portion of a femur and a tibia, the femur having a resected engagement surface, said knee joint prosthesis system comprising:
-
a first femoral component having a first femoral engagement region and at least a first condylar portion having a first femoral bearing surface, said first femoral engagement region operable to engage the resected engagement surface of the femur and said first condylar portion including a first posterior region having a first thickness; and
a second femoral component having a second femoral engagement region and at least a second condylar portion having a second femoral bearing surface, said second femoral engagement region operable to engage the resected engagement surface of the femur and said second condylar portion including a second posterior region having a second thickness, wherein said second thickness is larger than said first thickness and said first femoral engagement region is substantially the same as said second femoral engagement region, wherein said first femoral component has an outer anterior to posterior length that is less than an outer anterior to posterior length of said second femoral component, whereby a surgeon may select one of said first femoral component and said second femoral component for attachment to the femur. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A knee joint prosthesis system adapted to replace the articulating knee portion of a femur and a tibia, the femur having a resected engagement surface, said knee joint prosthesis system comprising:
-
a first femoral component having a first femoral engagement region and at least a first condylar portion having a first femoral bearing surface, said first femoral engagement region operable to engage the resected engagement surface of the femur and said first condylar portion including a first posterior region having a first thickness; and
a second femoral component having a second femoral engagement region and at least a second condylar portion having a second femoral bearing surface, said second femoral engagement region operable to engage the resected engagement surface of the femur and said second condylar portion including a second posterior region having a second thickness, wherein said second thickness is larger than said first thickness and said first femoral engagement region is substantially the same as said second femoral engagement region, and wherein said first femoral engagement region and said second femoral engagement region has substantially the same inner anterior to posterior dimension, whereby a surgeon may select one of said first femoral component and said second femoral component for attachment to the femur.
-
-
9. A knee joint prosthesis system adapted to replace the articulating knee portion of a femur and a tibia, the femur having a resected engagement surface, said knee joint prosthesis system comprising:
-
a first femoral component having a first femoral engagement region and at least a first condylar portion having a first femoral bearing surface, said first femoral engagement region operable to engage the resected engagement surface of the femur and said first condylar portion including a first posterior region having a first thickness; and
a second femoral component having a second femoral engagement region and at least a second condylar portion having a second femoral bearing surface, said second femoral engagement region operable to engage the resected engagement surface of the femur and said second condylar portion including a second posterior region having a second thickness, wherein said second thickness is larger than said first thickness and said first femoral engagement region is substantially the same as said second femoral engagement region, and wherein said first femoral component includes a first distal region having a third thickness and said second femoral component includes a second distal region having a fourth thickness, said first thickness being substantially equal to said third thickness and said fourth thickness, whereby a surgeon may select one of said first femoral component and said second femoral component for attachment to the femur.
-
-
10. A knee joint prosthesis system adapted to replace the articulating knee portion of a femur and a tibia, the femur having a resected engagement surface, the knee joint prosthesis system comprising:
-
a cruciate retaining (CR) femoral component having a first femoral engagement region and at least a first condylar portion having a first femoral bearing surface, said first femoral engagement region operable to engage the resected engagement surface of the femur and said first condylar portion including a first posterior region having a first thickness and a first distal region having a second thickness, said first thickness being substantially equal to said second thickness; and
a posterior stabilized (PS) femoral component having a second femoral engagement region and at least a second condylar portion having a second femoral bearing surface, said second femoral engagement region operable to engage the resected engagement surface of the femur and said second condylar portion including a second posterior region having a third thickness and a second distal region having a fourth thickness, said third thickness being greater than said fourth thickness, said first femoral engagement region being substantially the same as said second femoral engagement region and, wherein said cruiciate retaining (CR) femoral component has an outer anterior to posterior length that is less than an outer anterior to posterior length of said posterior stabilized (PS) femoral component, whereby a surgeon may select one of said cruciate retaining (CR) femoral component and said posterior stabilized (PS) femoral component, whereby said posterior stabilized (PS) femoral component will accommodate for an increased flexion gap upon resection of a posterior cruciate ligament. - View Dependent Claims (11, 12, 13, 14)
-
-
15. A knee joint prosthesis system adapted to replace the articulating knee portion of a femur and a tibia, the femur having a resected engagement surface, the knee joint prosthesis system comprising:
-
a cruciate retaining (CR) femoral component having a first femoral engagement region and at least a first condylar portion having a first femoral bearing surface, said first femoral engagement region operable to engage the resected engagement surface of the femur and said first condylar portion including a first posterior region having a first thickness and a first distal region having a second thickness, said first thickness being substantially equal to said second thickness; and
a posterior stabilized (PS) femoral component having a second femoral engagement region and at least a second condylar portion having a second femoral bearing surface, said second femoral engagement region operable to engage the resected engagement surface of the femur and said second condylar portion including a second posterior region having a third thickness and a second distal region having a fourth thickness, said third thickness being greater than said fourth thickness, said first femoral engagement region being substantially the same as said second femoral engagement region, and wherein said first femoral engagement region and said second femoral engagement region has substantially the same inner anterior to posterior dimension, whereby a surgeon may select one of said cruciate retaining (CR) femoral component and said posterior stabilized (PS) femoral component, whereby said posterior stabilized (PS) femoral component will accommodate for an increased flexion gap upon resection of a posterior cruciate ligament.
-
-
16. A knee joint prosthesis system adapted to replace the articulating knee portion of a femur and a tibia, the femur having a resected engagement surface, the knee joint prosthesis system comprising:
-
a cruciate retaining (CR) femoral component having a first femoral engagement region and at least a first condylar portion having a first femoral bearing surface, said first femoral engagement region operable to engage the resected engagement surface of the femur and said first condylar portion including a first posterior region having a first thickness and a first distal region having a second thickness, said first thickness being substantially equal to said second thickness; and
a posterior stabilized (PS) femoral component having a second femoral engagement region and at least a second condylar portion having a second femoral bearing surface, said second femoral engagement region operable to engage the resected engagement surface of the femur and said second condylar portion including a second posterior region having a third thickness and a second distal region having a fourth thickness, said third thickness being greater than said fourth thickness, said first femoral engagement region being substantially the same as said second femoral engagement region, and wherein said first thickness, said second thickness and said fourth thickness are substantially the same thickness, whereby a surgeon may select one of said cruciate retaining (CR) femoral component and said posterior stabilized (PS) femoral component, whereby said posterior stabilized (PS) femoral component will accommodate for an increased flexion gap upon resection of a posterior cruciate ligament.
-
-
17. A method for implanting a femoral component to a femur having a resected engagement surface from a knee joint prosthesis system, said method comprising:
-
resecting the femur to provide the resected engagement surface;
providing a first femoral component having a first condylar portion which includes a first posterior region having a first thickness and a first femoral engagement region and second femoral component having a second condylar portion which includes a second posterior region having a second thickness and a second femoral engagement region where said second thickness is greater than said first thickness and wherein said first femoral engagement region and said second femoral engagement region has substantially the same inner anterior to posterior dimension; and
intraoperatively determining if a posterior cruciate ligament should be removed;
if the posterior cruciate ligament is retained, selecting the first femoral component;
if the posterior cruciate ligament is removed, selecting the second femoral component which will accommodate for an increased flexion gap upon resection of the posterior cruciate ligament. - View Dependent Claims (18)
-
Specification