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Partial Knee Replacement
The knee has three compartments: the medial, lateral, and patello-femoral compartments. Commonly, arthritis will affect all three compartments of the knee. In select patients, however, the pattern of arthritis will be localized to a single compartment. For these patients, a Unicondylar Knee Replacement (sometimes called a “partial knee replacement” or a “Uni”) may be an excellent solution.
In Unicondylar Knee replacement, only one compartment of the knee is replaced. The two other compartments remain untouched. This often leads to less pain and shorter recovery periods for patients. Because the native ACL is also preserved, overall knee function is often excellent.
Good candidates for Unicondylar Knee Replacement will have only minimal deformity of the knee joint, a functioning ACL, and a body weight under 200 pounds. Most importantly, their radiographic arthritis and painful symptoms will be confined to only one knee compartment. Current orthopedic research estimates that approximately 5% to15% of knee arthritis patients will satisfy these criteria. For those that do, Unicondylar Knee Replacement offers an excellent treatment option.


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