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Partial Knee Replacement

Partial knee replacement is an alternative to total knee replacement in patients with arthritis on only one side of the knee. Partial knee replacement is a surgical procedure which involves resurfacing and replacement of only the diseased surface of the joint instead of the entire joint.

The knee has three compartments, the medial (inside), the lateral (outside) and the patellofemoral (kneecap) compartment. Partial knee resurfacing may be an option depending on the affected surface. During the procedure your surgeon removes only the damaged area of the bone in the affected knee and fits the implant to that bone.

Unicompartmental knee resurfacing is a procedure that resurfaces the affected inner aspect of the femur and tibia. During the procedure a small incision is made along the affected knee exposing the knee joint. The damaged portion of the meniscus along with a part of bone may be removed to create space for the new plastic component. The plastic component is fixed into the new created area. Now the damaged part of the femur along with little bone is removed to create room for the new femoral component. The new metal component is fixed with cement. After fixing the femoral and tibial components the knee is taken through a range of movements.

Patellofemoral knee resurfacing is a procedure that resurfaces only the worn out kneecap or patella and the groove in the thighbone (trochlea). The procedure is performed using an arthroscope, a small fiber-optic instrument with a tiny lens and a video camera. Through the tiny incisions the damaged part of the patella and trochlea will be removed to create room for the artificial component. The new component is fixed in place with the use of bone cement and the knee is taken through a range of movements.

Advantages of partial knee resurfacing include:

  • Minimal incisions
  • Minimal hospitalization
  • Reduced blood loss
  • Less scarring
  • Quick recovery
  • Less post operative pain

Although partial knee replacement is an effective method in repairing the damaged part of the knee, it is associated with certain complications such as infection, blood clot formation, damage to nerves and blood vessels, wear, dislocation, and ligament injuries.

The MAKOplasty® Procedure

Partial Knee Resurfacing with MAKOplasty®

MAKOplasty® Partial Knee Resurfacing is an innovative treatment option for adults living with early to midstage osteoarthritis (OA) in either the medial (inner), patellofemoral (top), or both compartments of the knee. It is powered by the RIO® Robotic Arm Interactive Orthopedic System, which allows for consistently reproducible precision in performing partial knee resurfacing.

The RIO® System empowers surgeons and hospitals to address the needs of a large and growing, yet currently underserved patient population. Patients who desire a restoration of lifestyle, minimized surgery, reduced pain and rapid recovery may benefit from MAKOplasty®.

During the procedure, the diseased portion of the knee is resurfaced, sparing the patient’s healthy bone and surrounding tissue. An implant is then secured in the joint to allow the knee to move smoothly again. MAKOplasty® Partial Knee Resurfacing can:

  • 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 knee replacement surgery
  • Be performed on an outpatient basis
  • Promote a rapid relief from pain and return to daily activities

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

Robotic Arm Interactive Orthopedic System (RIO®)

The RIO® Robotic Arm Interactive Orthopedic System features three dimensional pre-surgical planning. During surgery, the RIO® provides the surgeon with real-time visual, tactile and auditory feedback to facilitate optimal joint resurfacing and implant positioning. It is this optimal placement that can result in more natural knee motion following surgery.

RIO® Features:

  • Accurately plan implant size, orientation and alignment utilizing CT-derived 3-D modeling
  • Enabling the pre-resection capture of patient-specific kinematic tracking through full flexion and extension
  • Real-time intra-operative adjustments for correct knee kinematics and soft-tissue balance
  • Minimally invasive and bone sparing, with minimal tissue trauma for faster recovery

Makoplasty Uniknee replacement for Knee Arthritis

More information on MAKO Surgical is available online at www.makosurgical.com

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