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Method and apparatus for locating bone cuts at the distal condylar femur region to receive a femoral prothesis and to coordinate tibial and patellar resection and replacement with femoral resection and replacement

  • US 6,024,746 A
  • Filed: 03/27/1998
  • Issued: 02/15/2000
  • Est. Priority Date: 05/31/1995
  • Status: Expired due to Fees
First Claim
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1. An apparatus enabling the formation of planar resections on the medial and lateral condyles of a femur to provide seating surfaces to receive a femoral prosthesis, the apparatus comprising:

  • a measuring system for indicating a thickness of a prospective planar resection from the posterior of the medial and lateral condyles and which is initiated along a line parallel to a plane tangent to the posterior surfaces of the medial and lateral condyles, the measuring system includingan anterior contacting element adapted to contact the anterior surface of the femoral cortex;

    a posterior contacting element adapted to simultaneously contact the posterior surfaces of both of the medial and lateral condyles when no bone loss or equal bone loss is present from the posterior surfaces of the medial and lateral condyles; and

    a graduated scale between the anterior contacting element and the posterior contacting element and including graduated markings to represent a range of prosthesis sizes and to indicate a distance between the anterior surface of the femoral cortex and a plane tangent to the posterior surfaces of the medial and lateral condyles, and to indicate intermediate distances between adjacent prosthetic sizes so that a difference between a prosthetic size and the distance between the anterior surface and the tangent plane can be measured to determine the thickness of the prospective planar resection.

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