Triplanar knee resection system
First Claim
1. In a system for making triplanar bone resections for total knee replacement, the system including a set of instruments for resecting the anterior and posterior femoral condyles, the proximal tibia, and the distal femur, the resections being made to provide equal flexion and extension gaps, the improvement comprising a simplified set of instruments, including:
- an L-shaped guide rod having a first elongated portion adapted to be inserted into the medullary canal of the femur and a second portion disposed at a right angle to the first portion;
ana guide member having a planar slot therein, said member being adapted to be mounted on the second portion of said guide rod with said slot being parallel to the second portion and disposed relative to the first portion at a minor angle equal to 90°
minus the valgus angle.
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Accused Products
Abstract
An improved triplanar knee resection system is provided for preparing a knee joint for a prosthesis. The apparatus of the triplanar knee system includes a single guide member for use in resecting the distal femoral condyles, the proximal tibia, and the distal femur. The guide member cooperates with a simplified set of instruments, including femur and tibia guide rods, a tibia adaptor, a tibia bar, and a femur bar, for establishing equal flexion and extension gaps and triplanar resections. The method of the triplanar knee system provides a simplified procedure for use by an orthopedic surgeon in properly preparing a knee joint for implantation of a prosthesis.
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Citations
5 Claims
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1. In a system for making triplanar bone resections for total knee replacement, the system including a set of instruments for resecting the anterior and posterior femoral condyles, the proximal tibia, and the distal femur, the resections being made to provide equal flexion and extension gaps, the improvement comprising a simplified set of instruments, including:
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an L-shaped guide rod having a first elongated portion adapted to be inserted into the medullary canal of the femur and a second portion disposed at a right angle to the first portion;
ana guide member having a planar slot therein, said member being adapted to be mounted on the second portion of said guide rod with said slot being parallel to the second portion and disposed relative to the first portion at a minor angle equal to 90°
minus the valgus angle. - View Dependent Claims (2, 3, 4, 5)
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Specification