Apparatus and method for anterior and posterior referenced sizing and distal femur resection
First Claim
1. Apparatus for distal femur sizing and resection comprising:
- a sizer member having a pair of opposed external grooves and having a slide member receiver pivotally mounted therein;
a slide member, movably mounted in the sizer member;
a femoral cut guide movably engaged with the sizer member;
a first member and a second member sequentially removably attachable to the femoral cut guide, the first member being a reference device attached to the femoral cut guide for referencing, and the second member being a distal cut guide attachable to the femoral cut guide subsequent to removal of the reference device, to position the distal cut guide on the femur.
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Accused Products
Abstract
Apparatus for distal femur sizing and resection includes an adjustable sizer cut guide device formed by a sizer member, a femoral cut guide and a slide stone. The slide stone is provided to receive an intramedullary rod inserted into the femur. A first member and a second member are sequentially, removably attachable to the adjustable sizer cut guide device. The first member is an adjustable reference device provided for referencing. The second member is a distal cut guide which is attached to the adjustable sizer cut guide device after removal of the reference device, to position the distal cut guide on the femur. Readable scales on the adjustable sizer cut guide device and on the adjustable reference device, are matched to provide a size reference for a femoral prosthesis.
336 Citations
25 Claims
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1. Apparatus for distal femur sizing and resection comprising:
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a sizer member having a pair of opposed external grooves and having a slide member receiver pivotally mounted therein; a slide member, movably mounted in the sizer member; a femoral cut guide movably engaged with the sizer member; a first member and a second member sequentially removably attachable to the femoral cut guide, the first member being a reference device attached to the femoral cut guide for referencing, and the second member being a distal cut guide attachable to the femoral cut guide subsequent to removal of the reference device, to position the distal cut guide on the femur. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of distal sizing and resection comprising the steps of:
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slidably engaging a sizer member, a femoral cut guide and a slide stone into an adjustable sizer cut guide device including a first readable scale, the slide stone provided to receive an intramedullary rod inserted into the femur; positioning the adjustable sizer cut guide device in engagement with a distal surface and a posterior surface of the distal femur; attaching a first stylus, including a second readable scale, to the adjustable sizer cut guide device; adjusting the adjustable sizer cut guide device and the first stylus until the first readable scale and the second readable scale provide a matching reading; removing the first stylus in response to a half size reading being provided; attaching a second stylus, including a third readable scale, to the adjustable sizer cut guide device; adjusting the adjustable sizer cut guide device and the second stylus until the first readable scale and the third readable scale provide a matching reading equivalent to a prothesis size; securing the adjustable sizer cut guide device to the femur with a first securing means; removing the second stylus from the adjustable sizer cut guide device; inserting a cutting instrument into an anterior reference cut guide slot provided in the adjustable sizer cut guide device; cutting an anterior reference cut in the femur; attaching a distal cut guide to the adjustable sizer cut guide device in engagement with the anterior reference cut; securing the distal cut guide to the femur with a second securing means; removing the adjustable sizer cut guide device, the intramedullary rod and the first securing means from the femur; inserting a cutting instrument into a distal cut guide slot provided in the distal cut guide; cutting a distal cut in the femur; and removing the distal cut guide and the second securing means from the femur.
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Specification