PATIENT-SPECIFIC INSTRUMENTATION FOR PATELLAR RESURFACING SURGERY AND METHOD

  • US 20170086859A1
  • Filed: 09/30/2016
  • Published: 03/30/2017
  • Est. Priority Date: 09/30/2015
  • Status: Active Grant
First Claim
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1. A method for creating a patient-specific jig model for patellar resurfacing surgery, the method comprising:

  • obtaining, using one or more processors within a computing system, a patellar model of at least part of a patella, the patellar model being anatomically patient-specific, and an implant model of a patellar implant;

    obtaining, using the one or more processors within the computing system, a planned position of the patellar implant on the patellar model;

    calculating, using the one or more processors within the computing system, a position and/or orientation of a resurfacing plane and an attachment bore in the patella as a function of the planned position of the patellar implant;

    generating, using the one or more processors within the computing system, a virtual jig model corresponding to the resurfacing plane, the attachment bore, and the patellar model, the jig model comprising at least one patient-specific contact surface configured to correspond to a surface of the patella for complementary contact, at least one drill guide positioned relative to the at least one patient-specific contact surface and configured to guide a tool to define the attachment bore in the patella, and at least one cut guide positioned relative to the at least one patient-specific contact surface and configured to guide a tool to resurface the patella to form the resurfacing plane on the patella; and

    outputting, using the one or more processors within the computing system, the jig model.

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