Patellar resection guide
First Claim
1. A patella resection guide comprising a body, a pair of parallel cradle surfaces carried by the body and spaced in the superior-inferior direction so as to encounter and support respective posterior surfaces of the quadriceps tendon and the patella ligament of a patella received between the cradle surfaces, the cradle surfaces defining a reference plane, and means for resecting the patella at a desired orientation with respect to said reference plane.
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Accused Products
Abstract
A patella resection guide. The guide includes a cradle having spaced cradle supports to support the quadriceps tendon and patella ligament and properly locate the patella. The resection guide also may have opposed, movable plates between which may be gripped lateral and medial surfaces of a patella. One of the plates may include a saw guide for guiding a bone saw in a resection procedure. The guide may employ manually operable threaded connections to facilitate drawing the plates together to grip between them a patella to be resected.
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Citations
29 Claims
- 1. A patella resection guide comprising a body, a pair of parallel cradle surfaces carried by the body and spaced in the superior-inferior direction so as to encounter and support respective posterior surfaces of the quadriceps tendon and the patella ligament of a patella received between the cradle surfaces, the cradle surfaces defining a reference plane, and means for resecting the patella at a desired orientation with respect to said reference plane.
- 11. A patella resection guide comprising gripping means including a pair of gripping elements having respective parallel confronting gripping surfaces spaced to receive and grip a patella between them, means for supporting said elements and retaining their gripping surfaces in parallel while enabling them to be advanced toward each other to grip a patella between them, at least one of the gripping elements including saw guide means for guiding a bone saw during resection of a patella gripped between the gripping surfaces.
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21. A patella resection guide comprising a pair of gripping elements having respective confronting gripping surfaces spaced to receive a patella between them, means defining a pair of spaced, parallel, transversely extending cradle surfaces positioned adjacent ends of said gripping elements to encounter and support posterior surfaces of the quadriceps tendon and the patellar ligament, respectively, of a patella and to accurately position a patella received between the gripping surfaces, means for controllably drawing said gripping elements toward each other, and means for supporting said gripping elements to maintain their gripping surfaces in a parallel orientation while the gripping elements are drawn toward each other to grip a patella between them, at least one of the gripping elements including saw guide means for guiding a bone saw during resection of a patella gripped between the gripping elements.
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22. A patella resection guide comprising a body, a pair of parallel cradle surfaces carried by the body and spaced in the superior-inferior direction so as to encounter and support respective posterior surfaces of the quadriceps tendon and the patella ligament of a patella received between the cradle surfaces, gripping means comprising gripping elements having patella-gripping surfaces in a confronting orientation, said gripping elements being carried by said body and movable toward each other while maintaining the confronting orientation of said gripping surfaces to firmly grip between them lateral and medial surfaces of a patella supported between said cradle surfaces, manually operable means for controllably drawing said gripping elements toward each other, and a saw guide carried by the gripping means for guiding a bone saw during resection of a patella gripped by the gripping means.
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23. Method for resetting a patella, comprising:
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a. surgically exposing the patella, quadriceps tendon and patellar ligament; b. providing a resection guide having parallel cradle surfaces spaced to encounter posterior surfaces of the quadriceps tendon and the patellar ligament of the patella to support a patella in a fixed orientation with respect to a reference plane defined by said cradle surfaces, means for gripping and holding the patella in said fixed orientation, c. supporting the patella in said resection guide with said cradle surfaces contacting and supporting respectively the posterior surfaces of the quadriceps tendon and the patellar ligament of the patella, d. gripping the patella in said orientation; and e. resecting the patella. - View Dependent Claims (24, 25, 26, 27, 28)
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29. Method for resecting a patella, comprising:
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a. surgically exposing the patella, quadriceps tendon and patellar ligament; b. providing a resection guide having parallel cradle surfaces spaced to encounter posterior surfaces of the quadriceps tendon and the patellar ligament of the patella to support a patella in a fixed orientation with respect to a reference plane defined by said cradle surfaces, the resection guide having gripping surfaces carried in opposed, confronting orientation by gripping elements that are movable toward each other to encounter and grasp the patella, and a saw guide, c. supporting the patella in said resection guide with said cradle surfaces contacting and supporting posterior surfaces of the quadriceps tendon and the patellar ligament, respectively, of the patella, d. flexing the knee joint to draw the quadriceps tendon and patellar ligament tightly against said cradle surfaces to position the patella in said fixed orientation, e. drawing said gripping elements together while maintaining the opposed, confronting orientation of the gripping surfaces to grip lateral and medial surfaces of the patella, and f. resecting the patella with a saw guided by the saw guide.
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Specification