Method and apparatus for manufacturing an implant

  • US 10,159,498 B2
  • Filed: 06/15/2015
  • Issued: 12/25/2018
  • Est. Priority Date: 04/16/2008
  • Status: Active Grant
First Claim
Patent Images

1. An orthopedic device comprising:

  • a femoral implant having a central plane and an internal bone engagement surface that includes an anterior planar surface, an anterior chamfer surface, a distal planar surface, a posterior chamfer surface, and a posterior planar surface, wherein the internal bone engagement surface is standardized so as to be independent of an anatomy of a specific patient'"'"'s joint and is one of a series of predetermined size increments for the femoral implant, each of the series of predetermined size increments varying by a set distance from others, the femoral implant further including a medial condyle width, a lateral condyle width, a notch height located between the medial and lateral condyles and three medial angles and three lateral angles, each of the medial condyle width, the lateral condyle width, the notch height, the three medial angles and the three lateral angles are configured to be patient-specific based on an image of the specific patient'"'"'s joint, wherein the medial condyle width, the lateral condyle width, the notch height, the three medial angles and the three lateral angles are designed using computer modeling to have a shape dependent upon an anatomy of the specific patient, and wherein one of the three medial angles is defined by;

    an angle between the central plane and a line connecting medial-most points on an anterior edge of the distal planar surface and on a posterior edge of the distal planar surface,an angle between the central plane and a line connecting medial-most points on a distal edge of the anterior chamfer surface and the anterior edge of the distal planar surface, oran angle between the central plane and a line connecting medial-most points on the distal edge of the anterior chamfer surface and a proximal edge of the anterior planar surface.

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