Patent ID: 7998142
Filing Date: 2011-08-16
Classification: A61B

Abstract:
1. A method for preparing a distal femur for receiving a prosthetic femoral component comprising: resecting a distal surface of a femur to form a planar surface thereon; placing a first portion of a resection guide block adjacent either a medial or lateral side of a distal femur, the first portion having an anteriorly facing planar surface when placed adjacent the distal femur the anterior facing surface having a first coupling element extending along an axis generally perpendicular to the anteriorly facing planar surface; locating the resection guide block in an anterior/posterior direction by contacting an outermost anterior surface of the distal femur with an anterior referencing arm releasably mounted on the first coupling element of the resection guide block anteriorly facing surface, the resection guide block having a medial-laterally extending second portion mounted on a distal surface of the first portion of the resection guide block extending across the resected planar surface of the distal femur and having a planar surface for contacting the resected planar distal femur surface, the resection guide block second portion including saw guide slots for making a posterior bone cut and a posterior chamfer bone cut; orienting the resection guide block in internal/external rotation with respect to longitudinal axis of the femur and thereafter fixedly mounting the guide block on the femur; performing an anterior bone cut with a saw blade guided on a cutting guide mounted on the first coupling element after removing the anterior referencing arm mounted on the first coupling element of the anteriorly facing surface of the resection guide block first portion; performing the anterior chamfer cut with a saw blade guided on the cutting guide mounted on a second coupling element on a second surface of the resection guide block first portion, the second surface intersecting and forming an obtuse angle with the anteriorly facing planar surface and with the distal surface of the first portion of the resection guide block; and performing the posterior and posterior chamfer cuts with a saw blade engaging guide slots in the second portion of the resection guide block.