Bicompartmental Implants and Method of Use
First Claim
1. A bicompartmental femoral knee prosthesis comprising a single component for resurfacing the patellofemoral groove and the lateral condyle of a femur, the single component having an inner surface adapted to be secured to the femur and an outer surface adapted to contact a second bone implant.
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Accused Products
Abstract
The present invention provides a method and device for restoring individual patient joint kinematics using minimally invasive surgical procedures. The instrumentation of the invention sculpts the articular surface of a first bone that normally articulates in a predetermined manner with a second bone. The instrumentation includes a bone sculpting tool and a mount for attaching the tool to the second bone. The implant system is comprised of implants that provide intraoperative surgical options for articular constraint and facilitate proper alignment and orientation of the joint to restore kinematics as defined by the individual patient anatomy.
259 Citations
22 Claims
- 1. A bicompartmental femoral knee prosthesis comprising a single component for resurfacing the patellofemoral groove and the lateral condyle of a femur, the single component having an inner surface adapted to be secured to the femur and an outer surface adapted to contact a second bone implant.
- 5. A bicompartmental femoral knee prosthesis comprising a single component for resurfacing the patellofemoral groove and the medial condyle of a femur, the single component having an inner surface adapted to be secured to the femur and an outer surface adapted to contact a second bone implant.
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9. An apparatus for partial replacement of the distal surface of a femur and partial replacement of the proximal surface of a tibia, the femur articulating in a predetermined manner with the tibia, the apparatus comprising:
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a femoral implant including a bearing surface for mimicking and replacing the trochlea and one condyle of the distal femur, said femoral implant having an inner surface adapted to be secured to the femur and an outer surface; and
a tibial implant including a bearing surface for mimicking and replacing one plateau of the proximal tibia, said tibial implant being adjacent to said femoral implant;
wherein the outer surface of said femoral implant contacts said tibial implant and further wherein the resulting configuration of the femoral implant and the tibial implant articulate in a predetermined manner to restore proper kinematics.
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11. An apparatus for partial replacement of the distal surface of a femur and partial replacement of the proximal surface of a tibia, the femur articulating in a predetermined manner with the tibia, the apparatus comprising:
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a femoral implant including a bearing surface for mimicking and replacing the trochlea and one condyle of the distal femur, said femoral implant having an inner surface adapted to be secured to the femur and an outer surface; and
a tibial implant including a bearing surface for mimicking and replacing one plateau of the proximal tibia, said tibial implant being structured to be placed adjacent to said femoral implant;
wherein the outer surface of said femoral implant contacts said tibial implant and further wherein the resulting configuration of the femoral implant and the tibial implant articulate in a predetermined manner to restore proper kinematics. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A system for partial replacement of the distal surface of a femur and partial replacement of the proximal surface of a tibia, the femur articulating in a predetermined manner with the tibia, the system comprising:
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a set of femoral implants of various sizes, each of said femoral implants including a bearing surface for mimicking and replacing the trochlea and one condyle of the distal femur, and having an inner surface adapted to be secured to the femur and an outer surface; and
a set of tibial implants of various sizes, each of said tibial implants including a bearing surface for mimicking and replacing one plateau of the proximal tibia and being structured to be placed adjacent to said femoral implant;
wherein the outer surface of said femoral implant contacts said tibial implant and further wherein the resulting configuration of the femoral implant and the tibial implant articulate in a predetermined manner to restore proper kinematics. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification