Patient-specific instrumentation for patellar resurfacing surgery and method

  • US 10,874,408 B2
  • Filed: 09/30/2016
  • Issued: 12/29/2020
  • Est. Priority Date: 09/30/2015
  • Status: Active Grant
First Claim
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1. A patient-specific jig for patellar resurfacing surgery comprising:

  • a first jig portion defining at least one patient-specific contact surface negatively corresponding to a posterior surface of an anatomically patient-specific patella for complementary contact, and at least one drill guide in the first jig portion positioned relative to the at least one patient-specific contact surface to be configured to guide a tool defining an attachment bore in the posterior surface for a single-peg patellar implant, and another drill guide configured to secure a pin for securing the jig during resurfacing, the another drill guide being offset relative to the at least one drill guide and configured for a pin to be offset relative to the attachment bore in the patella; and

    a second jig portion having a part projecting from only a portion of a periphery of the first jig portion, the part defining at least one cut guide positioned relative to the at least one patient-specific contact surface to be configured to guide a tool in resurfacing the patella to form a planned resurfacing plane for supporting the patellar implant.

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