Instruments for use in knee replacement surgery
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 28, 1996
Issued Date -
N/A
app pub date -
May 16, 1994
filing date -
Feb 14, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
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.
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Family
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Cited Art Landscape
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