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

USRE39301E1Inactive Publication Date: 2006-09-19ZIMMER TECH INC
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
Publication Date
2006-09-19
Estimated Expiration
Not applicable · inactive patent

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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.
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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...

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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 ...