Importance

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Abstract

The present invention is directed to instrumentation for total knee arthroplasty, and methods of performing same. In one illustrative embodiment, the device is adapted to be coupled to a prepared end of a femur and comprises a body having a bottom surface and a movable stylus operatively coupled to the body, the stylus having a tip, wherein the stylus is coupled to the body such that the tip may be moved in a direction that is approximately perpendicular to a plane containing the bottom surface. In one illustrative embodiment of the present invention, the method comprises making an incision in a patient's knee and attaching a femoral implant sizing guide to a prepared surface of a femur of the patient, the sizing guide having a body having a bottom surface and a movable stylus with a tip. The method further comprises, after the sizing guide is attached to the prepared surface of the femur, moving the tip of the stylus in both a direction that is approximately perpendicular to a plane containing the bottom surface of the sizing device and in a direction that is approximately parallel to the plane containing the bottom surface to position the tip of the stylus at a location proximate an anterior cortex region of the femur and determining a size of a femoral knee prosthesis to be positioned on the femur.

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First Claim