Surgery – Instruments – Orthopedic instrumentation
Patent
1994-05-16
1996-05-28
Yu, Mickey
Surgery
Instruments
Orthopedic instrumentation
606 79, 606 82, 606 96, A61B 1756
Patent
active
055206956
ABSTRACT:
The present invention relates to an instrument and method for performing a partial knee replacement and, in particular, a single condyle replacement method. The instrument includes a tibial mounted platform which has formed thereon a keyed slot for receiving a spacer which spacer is positioned between the femur and tibia of the knee joint being replaced. The spacer receives thereon a positioning element which positioning element includes guides for guiding a drill to drill mounting holes for mounting further instruments used in the knee operation. In particular, the mounting holes are drilled when the femur and tibia are in a predetermined angular relationship with the spacer providing a predetermined spacial relationship. In this way, the mounting holes are properly determined and positioned with respect to the relationship between the femur and tibia. A saw guide is mounted to the mounting holes and used to guide a saw when cutting the anterior chamfer, the posterior chamfer and the posterior femoral cut. A further drill guide is then mounted to the mounting holes after removal of the saw guide for drilling holes for receiving the lugs of the condyle prosthesis.
REFERENCES:
patent: 4787383 (1988-11-01), Kenna
patent: 5116338 (1992-05-01), Poggie et al.
patent: 5122144 (1992-06-01), Bert et al.
patent: 5304181 (1994-04-01), Caspari et al.
patent: 5314482 (1994-05-01), Goodfellow et al.
New Jersey Tricompartmental Total Knee System, Surgical Procedure by Frederick Buechel, DePuy, 606/88 1984 .
Knee Replacement Using the Insall/Burstein Total Knee Condyla Knee System, Insall & Burstein, N. Y. Society for RRC.
Zimmer Intramedullary Knee Instrumentation for the Miller/Galante Total Knee System, Zimmer Inc.
Hanlon Brian E.
Johnson & Johnson Professional Inc.
Shirtz Joseph F.
Yu Mickey
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