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How robotic-arm assisted knee and hip surgery works

Dr. Anthony Melillo on how the Mako robotic arm changes recovery and outcomes in joint replacement.

Dr. Anthony Melillo, Bay Oaks Orthopaedics & Sports Medicine.

Dr. Anthony Melillo explains how robotic-arm assisted surgery is used for partial knee resurfacing and total hip replacement, and what it changes for the patient.

What the robotic arm does

The system builds a three-dimensional plan of the joint before surgery, and the robotic arm helps the surgeon hold to that plan during the procedure. The surgeon performs the operation; the arm constrains it to the plan.

Why it matters

More precise implant alignment and less disruption of the surrounding healthy tissue are the goals — which is what drives the recovery differences patients notice.

The plan is built before the incision, and the arm helps hold the surgery to it.

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