UNIVERSAL POSITIONING DEVICE FOR ORTHOPEDIC SURGERY AND METHOD OF USE THEREOF
First Claim
1. A method of installing a tool guide block on a knee bone element in preparation of a cut to be performed in the knee bone element during orthopedic knee replacement surgery, the tool guide block being engaged to a positioning device, the method comprising:
- abutting a first reference surface of the positioning device against the knee bone element;
determining a desired position and orientation of the tool guide block relative to the knee bone element;
adjusting at least one of a positioning and orientation of the positioning device until the tool guide block engaged thereto is in said desired position and orientation, the step of adjusting comprising;
adjusting a flexion-extension angle of the tool guide block while maintaining the first reference surface abutted against the knee bone element;
independently adjusting a varus-valgus angle of the tool guide block by first making a coarse adjustment and then making a fine adjustment;
adjusting a distal resection depth by displacing the tool guide block relative to the positioning device;
locking the positioning device in position such as to maintain the adjusted flexion-extension angle, varus-valgus angle, and distal resection depth of the tool guide block; and
fastening the tool guide block in place to the knee bone element once the desired position and orientation of the tool guide block has been reached.
2 Assignments
0 Petitions
Accused Products
Abstract
A positioning device assembly for positioning a tool guide block for use in an orthopedic surgery includes a positioning device having a block body with a reference surface adapted to abut a bone element, and first and second adjustment mechanisms that are independently operable. The first adjustment mechanism permits rotation of the tool guide block about a medial-lateral extending axis to provide flexion-extension angle adjustment and the second adjustment mechanism permits rotation of the tool guide block about an anterior-posterior extending axis to provide varus-valgus angle adjustment. The second adjustment mechanism includes integral coarse and fine adjustment mechanisms. A tool guide block assembly mounted to the positioning device includes a platform portion which is engaged to the block body of the positioning device and the tool guide block which is releasably engaged with the platform.
167 Citations
12 Claims
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1. A method of installing a tool guide block on a knee bone element in preparation of a cut to be performed in the knee bone element during orthopedic knee replacement surgery, the tool guide block being engaged to a positioning device, the method comprising:
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abutting a first reference surface of the positioning device against the knee bone element; determining a desired position and orientation of the tool guide block relative to the knee bone element; adjusting at least one of a positioning and orientation of the positioning device until the tool guide block engaged thereto is in said desired position and orientation, the step of adjusting comprising; adjusting a flexion-extension angle of the tool guide block while maintaining the first reference surface abutted against the knee bone element; independently adjusting a varus-valgus angle of the tool guide block by first making a coarse adjustment and then making a fine adjustment; adjusting a distal resection depth by displacing the tool guide block relative to the positioning device; locking the positioning device in position such as to maintain the adjusted flexion-extension angle, varus-valgus angle, and distal resection depth of the tool guide block; and fastening the tool guide block in place to the knee bone element once the desired position and orientation of the tool guide block has been reached. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification