Craig McAllister, M.D.
Orthopedic Surgeon
(425) 823-4000
Orthopedic Patients

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MAKOplasty® - Robotic-Assisted Surgery


Robotic Assisted Partial Knee Replacement

Osteoarthritis will impact nearly 15,000,000 people worldwide. It is one of the most common causes of severe knee pain in the active patient and is the most common diagnosis leading to knee replacement surgery. Traditional knee replacement has an extensive track record, has demonstrated excellent 15-20 year results, and is considered to be one of the most successful surgeries done today. However, traditional total replacement is a very invasive procedure, requiring a large operation, days in the hospital, arduous rehabilitation, and prolonged time off work.

Figure 1.

In roughly 12% - 15% of patients with osteoarthritis of the knee, the arthritic changes are involved in only one small area of the knee (Figure 1). These patients may be eligible for partial knee replacement--an important alternative, especially in younger patients.

Partial Knee Replacement

Randale Sechrest Interviews Dr. McAllister about the kind of surgeries that can be done using MAKOplasty Robotic Methods (Video) Like total knee replacement, a partial knee replacement consists of metal and plastic parts designed to resurface the worn ends of arthritic joints. Where total joint replacements resurface all of the joint surfaces, partial knee replacements are used to resurface only one side of the knee (Figure 2).

Figure 2.

Compared to total knee replacement, partial knee replacement is much less invasive with less blood loss, less postoperative pain, and a lower post-operative infection rate. Partial knee replacements allow a better range of motion than full knee replacements. Since the cruciate ligaments are retained, they feel more like normal knees than total knees do. Partial knee replacement is a bone conserving, soft tissue-friendly operation that sets the stage for an easier, and more successful revision replacement, making it an important option for the younger patient who needs to anticipate additional surgery in the future. These characteristics make partial knee replacement particularly attractive to the high-demand patient who seeks rapid return of function and normal lifestyle. However, these implants are small, are placed in a small incision, and must be placed with great precision.

Figure 3.

Robotic-assisted Partial Knee Replacement

Robotic Assisted partial knee replacement (MAKOplasty®) is a recent advancement in joint replacement surgery. Robotic Assisted surgery combines computer navigation, a 3-dimensional CT scan, and a surgeon-actuated robotic arm (Figure 3).The surgeon is able to plan the exact size and placement of implants in a way that optimizes alignment, range of motion, and stability. Computer navigation and the robotic arm help to eliminate surgical variations and greatly enhance the precision and consistency in performing partial knee resurfacing. MAKOplasty® is a bone-conserving, ligament sparing partial knee resurfacing. It is a minimally invasive option for adults living with early to mid-stage osteoarthritis in either the medial, patellofemoral - or both - compartments of the knee. Randale Sechrest interviews Dr. McAllister about the role of computer navigation in robotic surgery (Video)

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