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    Partial Knee Replacement

    What is it?

    There are three "compartments" in the knee.  They are called the medial (inside), lateral (outside) and anterior (under the kneecap).  In many patients, arthritis affects more than one of these spaces.  When arthritis becomes unmanageable by conservative means, total knee replacement is a surgical option.

    However, when only the medial or lateral compartment is involved in the arthritis process, a total knee replacment might not be necessary to improve function.  Unicondylar, or "partial" knee replacments have been performed for more than a decade.  Results from this procedure are good, but there are many patients whose symptoms do not improve after a partial knee replacement.  Recent study has shown that exact positioning of the partial knee components is critical to success.  As positioning of this type of implant is much more difficult to perform with traditional surgical tools, a navigation-based, robot-assisted surgery has been developed.  

    MAKO-plasty involves the use of 3-dimensional CT scanning to plan the exact position of the implants.  These plans are loaded into a surgical robot which assists the surgeon with exact placement of the implants.  The surgeon performs the actual surgery and the robot prevents the surgeon from "coloring outside of the lines" in terms of positioining of the knee components.  This procedure does involve extra incisions and additional risks and is not for everyone.  

    Dr. Lajam performs both MAKO plasty and traditional unicompartmental knee replacement in patients who are good candidates for this type of surgery.  Call today to meet with her!  212-598-7650.