Femoral cut guide
AssigneeZimmer, Inc.
InventorsAaron M Bailey, Kevin S. Cook, Christopher M. Byrd, Prashanth Hegde
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Abstract
The present disclosure provides a femoral cut guide for preparing a distal femur to receive a prosthetic femoral component of a knee implant. The prosthetic femoral component includes a central box. The femoral cut guide replicates the size and shape of the prosthetic femoral component, such that the femoral cut guide may serve as a trial or provisional component used to reduce and test the prepared knee joint before implanting the final prosthetic femoral component. The femoral cut guide includes a detachable box cut guide for preparing the distal femur to receive the central box of the prosthetic femoral component.
Claims11
A method of preparing a distal femur to receive a prosthetic femoral component, the prosthetic femoral component including a first articulating surface, an opposing first bone-contacting surface, and a box that projects proximally from the first bone-contacting surface to a top surface, the method comprising the steps of:
- providing a body having a second articulating surface that is shaped to replicate the first articulating surface and a second bone-contacting surface that is shaped to replicate the first bone-contacting surface, the body including a medial side and a lateral side that define an opening therebetween;
- positioning the second bone-contacting surface of the body against the distal femur;
- attaching a box cut guide to the body such that the box cut guide spans the medial and lateral sides of the body across the opening, the box cut guide including a first reference surface located in a first cut plane;
- guiding a first cutting tool across the first reference surface to prepare a first resected surface of the distal femur, the first resected surface of the distal femur located in the first cut plane;
- attaching a second cut guide to the body at a different location than the box cut guide such that the second cut guide spans the medial and lateral sides of the body across the opening, the second cut guide including a second reference surface located in a second cut plane, the second cut plane intersecting the first cut plane at an obtuse angle;
- guiding a second cutting tool across the second reference surface to prepare a second resected surface of the distal femur, the second resected surface of the distal femur located in the second cut plane;
- removing the body from the distal femur;
- and
- positioning the first bone-contacting surface of the prosthetic femoral component against the distal femur with the top surface of the box bordering the resected surface of the distal femur.
Dependencies are inferred from the claim text.