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Instrumentation for minimally invasive unicompartmental knee replacement

  • US 20030100907A1
  • Filed: 11/27/2002
  • Published: 05/29/2003
  • Est. Priority Date: 11/28/2001
  • Status: Active Grant
First Claim
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1. Instrumentation for establishing the location of a tibial resection along a tibial plateau in minimally invasive unicompartmental knee replacement surgery, said instrumentation comprising a tibial cutting guide for positioning anteriorly along a tibia and having a planar resection slot extending therethrough from anterior to posterior, said tibial cutting guide being movable along the long axis of the tibia to vary the location of said resection slot along the tibia, said resection slot being adapted to receive a cutting member therethrough to prepare a planar surface along a tibial plateau of the tibia;

  • and a tibial stylus for attachment to said tibial cutting guide and comprising a stylus arm positionable to rest on the tibial plateau prior to preparation of the planar surface, said stylus arm being positionable to rest on the tibial plateau via movement of the tibial cutting guide along the long axis of the tibia to establish a location for said resection slot corresponding to a predetermined depth for the planar surface below the level where said stylus arm rests on the tibial plateau, said stylus arm having a curvature from anterior to posterior to accommodate the anatomic curvature of the corresponding femoral condyle.

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