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Learn more about the specialties Southern Bone and Joint Specialists physicians offer.

Partial Knee Replacement

Dr. James Sikes, Dr. Elliott Nipper, Dr. Ross Ward and Dr. Michael Stonnington of Southern Bone and Joint Specialists, P.A. are pleased to offer MAKOplasty, a partial knee resurfacing procedure.

MAKOplasty is a robotic arm assisted partial knee resurfacing procedure designed to relieve the pain caused by joint degeneration due to osteoarthritis (OA). By selectively targeting the part of the knee damaged by OA, the surgeon can resurface the knee while sparing the healthy bone and ligaments surrounding it.

MAKOplasty Partial Knee Resurfacing Can:

· Enable surgeons to precisely resurface only the arthritic portion of the knee

· Preserve healthy tissue and bone

· Facilitate optimal implant positioning to result in a more natural feeling knee following surgery

· Result in a more rapid recovery and shorter hospital stay than traditional total knee replacement surgery

Unlike other more invasive procedures MAKOplasty can often be performed through a four to six inch incision over the knee with small incisions in both the femur (thigh bone) and tibia (shin). Additionally the preservation of natural bone and tissue along with more ideal patient specific implant positioning may also result in a more natural feeling knee. And since healthy bone is preserved, patients who undergo MAKOplasty partial knee procedures may still be a candidate for a total knee replacement procedure later in life if necessary.

The MAKOplasty procedure is indicated for patients suffering from unicompartmental or bicompartmental knee disease. A total replacement is sometimes necessary if the surgeon discovers during surgery that the knee has more damage than originally seen in the pre-operative X-rays and CT scan.

MAKOplasty® Partial Knee Resurfacing

knee replacement

Partial knee replacement is a treatment option for people with early to mid-stage osteoarthritis (OA) that has not yet impacted their entire knee. Only the diseased portion of the knee is replaced, sparing healthy bone and the ligaments known as the ACL (anterior cruciate ligament) and PCL (posterior cruciate ligament).

MAKOplasty Partial Knee Resurfacing is an advanced partial knee surgery performed with the RIO® Robotic Arm Interactive Orthopedic System. It can be performed as a unicompartmental procedure to address OA in any of the three compartments of the knee: the medial (inner), patellofemoral (top), or lateral (outer) compartments. There is also a bicompartmental option for OA in both the medial and patellofemoral compartments.

What are the benefits of MAKOplasty®?

Partial knee replacement can be a challenging procedure to perform accurately on a consistent basis using manual techniques. Robotic arm assisted MAKOplasty enables consistent results and more accurate implant placement ‚Äì which is an important factor in the life expectancy of implants. In an ongoing study, MAKOplasty resulted in both greater accuracy in implant placement and less pain in the first eight weeks post-surgery compared to manual partial knee replacement using Oxford® implants.1 Another study found that unicompartmental MAKOplasty patients who received RESTORIS® MCK Medial Onlay implants, showed a very low failure rate of only 0.4% at two years2, which is nine times lower than that of manual surgery. The study was conducted by four surgeons, who evaluated 201 patients (224 knees).2

knee pain

How does MAKOplasty® Work?

Before surgery, a CT scan is taken of the patient’s knee, and a 3D model created using the RIO system’s software. From this model, a pre-surgical plan is developed for the positioning of implants based on that patient’s unique anatomy.

To ensure implants are optimally positioned and that the soft tissues of the knee are balanced for a good surgical outcome, surgeons can test and fine tune the plan before surgery by moving the leg through different ranges of motion. The RIO provides measurements and visualization, and the surgeon adjusts the plan as needed.

Once the surgical plan is finalized, it is programmed into the RIO, which creates a safety zone for bone removal. While the surgeon guides the robotic arm and is in control of it at all times, the RIO ensures that bone removal stays with the safety zone of the surgical plan, providing auditory, visual and tactile feedback, stopping the robotic arm if necessary before bone can be removed outside the planned area. Once the bone preparation is complete, the implants are placed in the knee.

VIDEO: Learn More About MAKOplasty® Knee

As a knee arthroplasty procedure, MAKOplasty® is typically covered by Medicare- approved and private health insurers.

*Oxford is a registered trademark of Biomet, Inc.

1. Blyth MJ, Smith J, Jones B, MacLean III AB, Anthony, Rose P. Does robotic surgical assistance improve the accuracy of implant placement in unicompartmental knee arthroplasty? AAOS 2013 Annual Meeting, Chicago, IL.

2. Roche MW, Coon T, Pearle AD, Dounchis J. Two year survivorship of robotically guided medial MCK onlay, 25th Annual Congress of ISTA, October 3-6, 2012, Sydney, Australia.