Marking template for installing a custom replacement device for resurfacing a femur and associated installation method

摘要

A replacement device for resurfacing a joint surface of a femur and a method of making and installing such a device is provided. The custom replacement device is designed to substantially fit the trochlear groove surface, of an individual femur, thereby creating a “customized” replacement device for that individual femur and maintaining the original kinematics of the joint. The top surface is designed so as to maintain centrally directed tracking of the patella perpendicular to the plane established by the distal end of the femoral condyles and aligned with the center of the femoral head.

主权项

1. An instrument comprising:
a body, the body including a femoral contacting side, the femoral contacting side having a three-dimensional shape substantially custom formed to match and fit at least a portion of a distal-anterior portion of a femur of a particular patient; and a surgical tool guide, the surgical tool guide being customized for the particular patient wherein the surgical tool guide is in a pre-defined spatial arrangement with the three dimensional shape of the femoral contacting side and the particular patient.