METHOD AND APPARATUS FOR LOCATING RESECTION AT THE DISTAL CONDYLAR FEMUR, TIBIA, AND PATELLA

摘要

An apparatus and method of using same to form planar resections on the medial and lateral condyles of a femur and a corresponding resection of a tibia in a knee includes a caliper feeler and measurement plate to measure for the size of the femoral prosthesis to be received and a tibial resection guide. The caliper feeler and measurement plate are used to determine a first distance between an anterior surface of the femoral cortex and a plane tangent to a posterior surface of the medial and lateral condyles of a femur. A graduated scale between the caliper feeler and the measurement plate compares the first distance to at least two standard femoral prosthesis sizes so that the most suitable size can be selected, and measures a second distance between the first distance and the size of the selected standard femoral prosthesis size to determine a thickness or thickness to be resected at the posterior surface of the femoral condyles. The tibial resection guide includes a pair of styli which slide and rotate in the resection guide to contact the proximal tibial surface. The styli include incremental markings to properly place the guide for resection.