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Systems and methods for measuring parameters in joint replacement surgery

  • US 9,456,765 B2
  • Filed: 09/23/2015
  • Issued: 10/04/2016
  • Est. Priority Date: 09/16/2011
  • Status: Active Grant
First Claim
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1. A computer-assisted surgery system comprising:

  • a display;

    an input device configured to receive data input by a user;

    a processor, operatively coupled to the input device and the display and configured to;

    establish a first position of a pre-operative center of rotation of a joint in a first coordinate space of a first bone and a second coordinate space of a second bone;

    establish a second position of the pre-operative center of rotation of the joint in the first coordinate space of the first bone, wherein the second position is a projection into the first coordinate space of the first bone of the position of the pre-operative center of rotation maintained in a constant position in the second coordinate space of the second bone; and

    determine a change in a parameter associated with the joint based on the first and second positions; and

    output a result indicative of the determined change in the parameter to the display.

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