For determining the system and method for the mechanical axis of femur

For determining the system and method for the mechanical axis of femur

  • CN 101,969,869 B
  • Filed: 12/08/2008
  • Issued: 08/03/2016
  • Est. Priority Date: 12/06/2007
  • Status: Active Grant
First Claim
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1. , for the method positioning the profile of prosthetic component on the threedimensional model of limbs, described method includes:

  • A. the patient specific anatomic collecting described limbs learns data;

    B. on the threedimensional model of described limbs, the first and second anatomic landmark are identified, to determine the first spatial relationship;

    C. on the threedimensional model of described limbs, the 3rd anatomic landmark is identified, to determine second space relation relative to described first spatial relationship;

    D. described first spatial relationship and described second space is utilized in closing all degree of freedom tying up in addition to one degree of freedom, to position the described profile of described prosthetic component on the threedimensional model of described limbs;

    AndE. on the threedimensional model of described limbs, identify the 4th anatomic landmark, with at the described profile of prosthetic component described in one degree of freedom inner position,Wherein, described first spatial relationship is the line extended between described first and second anatomic landmark,Described second space relation is through described 3rd anatomic landmark and the line that is parallel to described first spatial relationship,Wherein, described first anatomic landmark is the ledge of the inner side epicondyle of distal femoral, and described second anatomic landmark is the ledge of the outside epicondyle of distal femoral, and described 3rd anatomic landmark is the ditch point of distal femoral.

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