INSTRUMENTS FOR KNEE SURGERY AND METHOD UF USE
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Accused Products
Abstract
The present invention comprises a set of instruments and a method for their use in preparing a knee joint to receive knee implants. The inventive instruments and method are generally suitable for knee joint surgery. Furthermore, they include features that make them suitable for performing minimally invasive knee surgery.
203 Citations
32 Claims
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1-21. -21. (canceled)
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22. A femoral positioning guide for establishing a position reference on a femur to guide the cutting of the distal femur, the femur having a proximal end, a distal end, an anatomic axis from the proximal end to the distal end, an intramedullary canal along the anatomic axis, a medial epicondyle, a lateral epicondyle, an anterior surface and a posterior surface, the femoral positioning guide comprising:
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a body having a closed end and an opposite open end with opposing sides able to straddle the distal end of the femur; a pair of probes mounted on the opposing sides in coaxial alignment, the pair of probes being simultaneously alignable with the medial and lateral epicondyles; an intramedullary rod mounted on the body, the intramedullary rod being engageable with the intramedullary canal; and means for establishing a position reference on the femur that records a desired position and orientation in a way that permits positive engagement by a bone cutting guide to produce a bone cut relative to the position and orientation information. - View Dependent Claims (23, 24, 25, 26)
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27. A method comprising the steps of:
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positioning a femoral position guide adjacent a distal end of a femur, the femoral position guide having a position reference guide able to be positioned at a desired varus-valgus angle and at a desired external rotation angle; determining a desired varus-valgus angle and a desired external rotation angle; creating a position reference on the femur that permits positive engagement by a cut guide to orient the cut guide at the desired varus-valgus and external rotation angles; engaging a cut guide with the position reference; and guiding a cutter with the cut guide to cut the femur. - View Dependent Claims (28, 29, 30, 31)
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32-70. -70. (canceled)
Specification