Method of determining a contour of an anatomical structure and selecting an orthopaedic implant to replicate the anatomical structure

摘要

A computer assisted surgery (CAS) system and method for preparing an anatomical structure to receive an orthopaedic implant. The method generally involves the steps of determining a contour of the anatomical structure by using the CAS system to acquire a plurality of points on the anatomical structure and provide a best fit approximation of the anatomical structure based on the plurality of points, selecting an implant to replicate the anatomical structure, and preparing the anatomical structure to receive the implant.

主权项

1. A method of selecting a placement of an implant for an orthopaedic surgery, the method comprising the steps of:
identifying a region of an anatomical structure for replacement by said implant; acquiring a plurality of data points from distinct locations on at least a portion of a surface of said region of said anatomical structure by physically contacting the anatomical structure with a device; approximating a surface contour of said region of said anatomical structure solely using said plurality of data points; selecting said implant from a library of implants, said implant being selected based on said approximation of said surface contour of said region of said anatomical structure; and providing a proposed placement of said implant relative to said anatomical structure, wherein the step of selecting said implant from said library of implants includes the step of comparing a contour of each of a plurality of implants to said surface contour of said anatomical structure.