Method for resecting the knee using a resection guide and provisional prosthetic component

a knee joint and protruding technology, applied in the field of knee joint protruding methods and surgical procedures, can solve the problems of lack of an apparatus in the prior ar

Inactive Publication Date: 2006-09-19
ZIMMER TECH INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0012]The present invention provides a provisional component which allows the selected size of a prospective implant to be test fit with respect to the distal and posterior resections of the femur and the soft tissues of the knee joint before making the final resection of the anterior surface of the femur. It also provides a guide means as an integral part of the provisional component for making those final cuts to the anterior surface. F

Problems solved by technology

However, what the prior art lacks is an apparatus and method whereby all cuts can be made from the common reference point of the intramedullary canal of the femur and whereby the

Method used

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  • Method for resecting the knee using a resection guide and provisional prosthetic component
  • Method for resecting the knee using a resection guide and provisional prosthetic component
  • Method for resecting the knee using a resection guide and provisional prosthetic component

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Embodiment Construction

[0027]The femoral component revision prosthesis of FIG. 1 is similar to that employed in most knee prosthetics in that it comprises an anterior flange 1, a pair of posterior condylar flanges 2 and 3, a distal femur contacting surface 4, an intramedullary locating and anchor shaft 5 and a distal joint surface 6 corresponding to the natural distal femoral surface of the human knee with condylar surfaces 7 and 8 for cooperation with the corresponding end of a tibia and means for patellar tracking along the arc of the joint surface of the anterior flange 1 and between the distal condylar surfaces 7 and 8. Femoral component prostheses of this general type have been used for some time in knee reconstruction and have been made available in a range of sizes to accommodate patients having different skeletal and joint sizes. Such components have required that the distal end of the femur be resected to the specific size of the individual component, necessitating careful shaving of the bone by ...

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Abstract

A method and apparatus for knee replacement surgery wherein a femoral provisional component is provided which corresponds to a permanent component to be implanted in a human and which includes means for establishing the correct fit and position of such a component, prior to its implantation, in relation to the soft tissues of the knee before final resection of the anterior femoral surface. The provisional component further includes cutting guide means for such anterior surface resection such that accurate cuts may be made with the provisional component in place. The method involves preparing the distal femoral surface using the femoral intramedullary canal as a constant reference point for posterior and distal cutting guides followed by locating the provisional component by means of a provisional intramedullary stem so that the relationship with the soft tissues of the knee may be accurately established.

Description

[0001]This is a division of application Ser. No. 07 / 862,953 filed Apr. 3, 1992 now abandoned.This application is a reissue of application Ser. No. 08 / 021,039, now U.S. Pat. No. 5,458,645, which is a divisional of application Ser. No. 07 / 862,953, filed Apr. 3, 1992, now U.S. Pat. No. 5,258,032.FIELD OF THE INVENTION[0002]The present invention relates to a method and apparatus for a knee joint prosthes is and surgical procedure. More particularly concerning the proper fitting of the femoral component of a total knee revision prosthesis, the procedure for performing revision surgery and apparatus used therein.BACKGROUND OF THE INVENTION[0003]The present invention relates to a provisional knee prosthesis and resection guide component together with a surgical procedure designed for use as a system in revision surgery of previously performed knee arthroplasties. It may also find utility in an initial knee replacement procedure.[0004]Revision surgery is performed to correct failures of pre...

Claims

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Application Information

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IPC IPC(8): A61B17/00A61B19/00A61F2/38A61B17/15A61F2/00A61F2/30A61F2/46
CPCA61B17/155A61F2/3859A61F2/4684A61F2002/30405A61F2002/30594A61F2002/30672A61F2002/30736A61F2002/30797A61F2220/0025
Inventor BERTIN, KIM C.
Owner ZIMMER TECH INC
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