ANTERIOR AND POSTERIOR REFERENCING SIZING GUIDES AND CUTTING BLOCKS AND METHODS

摘要

Embodiments of the invention include instruments and methods for preparing a femur to receive a femoral component of a knee arthroplasty system, with some embodiments configured to enable anterior referencing techniques, posterior referencing techniques, and to facilitate intraoperative switching between anterior and posterior referencing techniques. Other embodiments of the invention include cutting blocks and methods for preparing a femur to receive a knee arthroplasty system femoral component, with some embodiments including cutting blocks that can be used in both an anterior referencing technique and a posterior referencing technique, thereby reducing the number of cutting blocks required to provide an instrument set capable of implanting all available sizes of femoral components with both anterior and posterior referencing techniques.

主权项

1. A femoral sizing guide, comprising:
a base including a main body and one or more paddies that extend from the main body, wherein the one or more paddles are configured to contact posterior condyles of a patient; a posterior reference frame pivotally coupled with the base, wherein the posterior reference frame includes one or more holes for receiving one or more fasteners; an anterior reference frame slidably coupled to the posterior reference frame; and a stylus coupled to the anterior reference frame, wherein the stylus extends away from the plane in which the anterior reference frame slides relative to the posterior reference frame.