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US7842039: Method and apparatus for achieving correct limb alignment in unicondylar knee arthroplasty

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Filing Information

Inventor(s) Robert A. Hodorek · Adam H. Sanford · Richard V. Williamson · Paul V. Saenger · Toby N. Farling ·
Assignee(s) Zimmer Technology, Inc. ·
Attorney/Agent(s) Baker & Daniels LLP ·
Primary Examiner Anu Ramana ·
Application Number US11456303
Filing date 07/10/2006
Issue date 11/30/2010
Prior Publication Data
Predicted expiration date 08/06/2024
Patent term adjustment 618
U.S. Classifications 606/87  ·
International Classifications A61F500  ·
Kind CodeB2
Related U.S. Application DataCROSS REFERENCE TO RELATED APPLICATIONS
This application is a Divisional of U.S. application Ser. No. 10/305,697, entitled METHOD AND APPARATUS FOR ACHIEVING CORRECT LIMB ALIGNMENT IN UNICONDYLAR KNEE ARTHROPLASTY, filed on Nov. 27, 2002.
6 Claims, 13 Drawings


Abstract

A method and apparatus for linking the distal femoral cut and the proximal tibial cut in unicondylar knee arthroplasty is disclosed. A spacing apparatus is positioned in the relevant knee compartment and utilized to hold the knee in position to correct limb alignment. The spacing apparatus includes a femoral cut slot through which the distal femoral cut is made and further includes tibial affixment apertures through which a headless securing device can be positioned to secure the spacing apparatus to the tibia. After the distal femoral resection is complete, the spacing apparatus is removed, with the headless securing devices remaining positioned in the tibia. The headless securing devices are used as a reference for securing a tibial cut block to the tibia for making the proximal tibial resection. With the mechanism of the present invention, the knee can be placed in flexion when making the proximal tibial cut.

Independent Claims | See all claims (6)

  1. 1. A method of linking a proximal tibial cut made with a tibial cut guide and a distal femoral cut made with a femoral cut guide, comprising: aligning a femur and a tibia to create a desired alignment securing the femoral cut guide to the femur, the femoral cut guide including a femoral cut slot through which the distal femoral cut can be made; securing a reference to the tibia, said reference spaced a predetermined distance from said femoral cut slot; removing said femoral cut guide, leaving said reference secured to the tibia; connecting the tibial cut guide to said reference, the tibial cut guide including a tibial cut slot through which the proximal tibial cut can be made, wherein said reference links the proximal tibial cut to the distal femoral cut; and placing the knee in flexion and thereafter resecting the proximal tibia using said tibial cut guide.

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Other Publications

The Australian Office Action mailed Nov. 1,2007 in related Australian application No. 2003264612.
The European Search Report mailed Jan. 4, 2004 in related European application No. 03257497.2.
The Canadian Office Action mailed Dec. 30, 2009 in related Canadian application No. 2,449,336.
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Referenced By

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