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Methods of predetermining the contour of a resected bone surface and assessing the fit of a prosthesis on the bone

  • US 9,504,579 B2
  • Filed: 06/26/2012
  • Issued: 11/29/2016
  • Est. Priority Date: 03/17/2006
  • Status: Active Grant
First Claim
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1. A method of designing a prosthesis to substantially fit a resected bone surface based on a population of bones from a plurality of patients, the method comprising the steps of:

  • creating a plurality of two-dimensional outlines corresponding to each resected bone surface for each bone of the population of bones from the plurality of patients using a computer, wherein the creating step comprises;

    obtaining a three-dimensional contour of each resected bone surface based upon images of the population of bones;

    identifying a vertex between a first planar surface of each resected bone surface and a second planar surface of each resected bone surface;

    manipulating the first planar surface to be coplanar with the second planar surface; and

    outlining a perimeter of the first planar surface and the second planar surface to define the two-dimensional outline for each resected bone surface;

    determining a contour of a bone engaging surface of a prosthesis using the plurality of two-dimensional outlines and a best fit approximation of the plurality of two-dimensional outlines of the resected bone surface; and

    comparing the contour to the plurality of two-dimensional outlines of the resected bone surface derived from the population of bones from the plurality of patients to assess a fit of the prosthesis with the population of bones.

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