• Ario Kiarash MD and Michael Amini MD perform MAKOplasty robotically-guided partial knee replacements

    Stryk1aRobotically-guided joint replacement is one of the most rapidly evolving fields in orthopedics, with the goal of improving the accuracy of implant placement at the time of surgery. The goal of any joint replacement is to place the implants in the ideal position to maximize both the function and longevity of the joint replacement. Studies have shown us that implants placed in the ideal position function better and last longer. Traditionally, surgeons have placed the implants based on generic guides and instrumentation, and this has been successful for millions of patients over the last several decades.

    However, not all implants are placed in the ideal position. This can lead to worse function for the patient, and this can cause the replacement to wear out and loosen early. Several studies have shown that traditional methods lead to ideal implant position in partial knee replacements only 25-80% of the time. This is a very large range, which clearly shows the shortcomings of traditional methods.

    Stryk2aRobotically-guided joint replacement helps the surgeon place the implant in the ideal position every time, for every patient. The robot, called the MAKOplasty or MAKO, prevents errors that can lead to incorrect positioning. The surgeon still performs the exposure of the joint during the surgery and still decides where to place the implant using the MAKO computer.



    Stryk3aThe robot then helps the surgeon perfectly execute the plan by only allowing the instruments and drills to work when they are perfectly aligned. If the drill is not perfectly aligned, the robot will not allow the drill to turn on. Even when the implants are placed and the surgeon moves the knee backwards and forwards to check the stability of the knee, the robot can help the surgeon objectively measure the stability to decide if any further soft tissue balancing is needed to maximize the function of the person’s knee.

    The only MAKO robot in Tucson is at Oro Valley Hospital, and Ario Kiarash M.D. and Michael Amini M.D. are two of the only surgeons who are using this technology for their patients. If you have knee arthritis and are contemplating a knee replacement, ask Ario Kiarash M.D. or Michael Amini M.D. if you are a candidate for the MAKOplasty robotically-guided partial knee replacement.

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