Methods and apparatus for performing knee arthroplasty
AssigneeSmith & Nephew, Inc.
InventorsZachary Christopher Wilkinson, Brian W. McKinnon, David A. Drucker, Michael D. Ries
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Abstract
Methods and apparatus for performing knee arthroplasty, including, but not limited to, bicruciate retaining knee arthroplasty, are described herein. Methods and apparatus for preparing a distal femur for a femoral implant as well as methods and apparatus for preparing a proximal tibia for a tibial implant are described. These methods and apparatus, in at least some embodiments and uses, facilitate decreasing the complexity of knee arthroplasty procedures such as bicruciate retaining procedures, while maintaining, if not improving on, the safety, accuracy and/or effectiveness of such procedures.
Claims43
A surgical kit for arthroplasty on a knee joint, the surgical kit comprising at least one distal femoral trial for evaluating a distal femoral resection of a distal femur, wherein the distal femoral trial comprises:
- a body having a proximal-most surface and a distal surface, the proximal-most surface being a planar, proximal facing surface for contact with medial and lateral portions of the distal femoral resection of medial and lateral condyles;
- the distal surface being an inferior, curved surface defining medial and lateral condylar surfaces for contact with an unresected surface on a proximal tibia;
- and the body defining, between the medial and lateral condylar surfaces, a gap configured to admit at least a portion of a retained cruciate ligament through the body when the proximal-most surface is in contact with the distal femoral resection.
A surgical kit for arthroplasty on a knee joint, the surgical kit comprising at least one distal femoral trial for evaluating a distal femoral resection of a distal femur, wherein the distal femoral trial comprises:
- a body having a proximal-most surface and a distal surface, the proximal-most surface being a planar, proximal facing surface for contact with medial and lateral portions of the distal femoral resection of medial and lateral condyles, the body being substantially U-shaped in the plane of the planar, proximal-most surface;
- and the distal surface being an inferior, curved surface defining at least one condylar surface for contact with an unresected surface on a proximal tibia.
A surgical kit for arthroplasty on a knee joint, the surgical kit comprising at least one distal femoral trial for evaluating a distal femoral resection of a distal femur, wherein the distal femoral trial comprises:
- a body having a proximal-most surface and a distal surface, the proximal-most surface being a planar, proximal facing surface for contact with the distal femoral resection;
- the distal surface being an inferior, curved surface defining medial and lateral condylar surfaces having condylar radii for contact with an unresected surface on a proximal tibia;
- and the body defining, between the medial and lateral condylar surfaces, a gap configured to admit at least a portion of a retained cruciate ligament through the body when the proximal-most surface is in contact with the distal femoral resection.
A surgical kit for arthroplasty on a knee joint, the surgical kit comprising at least one distal femoral trial for evaluating a distal femoral resection of a distal femur, wherein the distal femoral trial comprises:
- a body having a proximal-most surface and a distal surface, the proximal-most surface being a planar, proximal facing surface for contact with the distal femoral resection, the body being substantially U-shaped in the plane of the planar, proximal-most surface;
- and the distal surface being an inferior, curved surface defining at least one condylar surface having condylar radii for contact with an unresected surface on a proximal tibia.
Dependencies are inferred from the claim text.