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OMNIBotics® is a robotic-assisted system used by orthopedic knee surgeons to plan and perform total knee replacement with the utmost precision. In this procedure, the worn out or damaged surface of the knee joint is removed and replaced with metal and plastic implant. Robotic instruments are used by the orthopedic surgeon under computer guidance to ensure the procedure is carried out precisely to plan.

OMNIBotics has been used in more than 35,000 surgeries since its global introduction in 2010 and has an overall patient satisfaction of 97.4% at one-year post-op.1

During an OMNIBotics robotic-assisted surgery Bone Morphing™ technology is used to quickly build a 3D virtual model of your knee during surgery. This allows your surgeon to intra-operatively plan a customize surgery the surgery for your unique joint.

OMNIBotics is the first system with robotic-assisted ligament balancing capability, designed to help your surgeon achieve balance throughout flexion, which has been shown to reduce post-operative pain.2

Indications for OMNIBotics Robotic-Assisted Total Knee Replacement

If you have severe arthritis and Knee pain that is not relieved with non-surgical treatments, your doctor may recommend OMNIBotics robotic-assisted total knee replacement to provide better results.

Procedure: OMNIBotics Robotic-Assisted Total Knee Replacement

The OMNIBotics robotic-assisted total knee replacement is performed either under spinal or general anesthesia.

  • You may be administered a neuromuscular blocker that paralyzes the muscles to prevent accidental movements during the surgical procedure.
  • You are placed in a supine position on your back. Depending on your condition, one leg may be slightly raised at an angle of 30° or 90° and the other leg is extended on the operating table.
  • A few incisions are made in your knee joint.
  • Your surgeon cuts or shaves the damaged area of the tibia (shinbone) and the cartilage. This removes any bone deformities and bony growths, as well as creates a smooth surface on which the implants can be attached.
  • Once the tibial cut has been made, the BalanceBotTM is used to assess the native alignment and balance of the knee. This can be printed out later on to compare with your post-operative alignment and balance.
  • Your surgeon uses the BalanceBot data to determine how they will place the femoral implant component for a well balanced knee.
  • The damaged portions of the femur are cut at specific angles using a robotic cutting guide called the OMNIBotTM, which provides cut accurary within 0.6mm3.
  • The tibial component is attached to the end of the bone with screws or bone cement.
  • The femoral component is placed at the end of the femur. Bone cement may or may not be used.
  • The tibia and femur with the new components are then placed together to form a new knee joint.
  • The rear surface of the kneecap (patella) is prepared to receive a plastic component. This ensures it glides smoothly over the new artificial knee.
  • After placing all the new components, the BalanceBot is used again to evaluate ligament balance throughout a full range of motion.
  • Then, the knee joint is irrigated and cleaned with a sterile solution.
  • The incisions are then closed.
  • A drain may be inserted to prevent hematoma formation depending on your surgeon’s preference.
  • A sterile dressing is placed over the incision.
  • You can request a copy of your pre and post surgical knee alignment report.

Care and Recovery after OMNIBotics Robotic-Assisted Total Knee Replacement

Post-surgery, your surgeon will give you specific instructions to ensure a smooth and quick recovery.

  • You will be prescribed pain medications to manage any discomfort.
  • You will be encouraged to walk after your surgery. You will need to use crutches, walker, or cane for weight-bearing for a few weeks.
  • You will be instructed to perform mild exercises as per your physical therapist’s recommendations to remain active. Depending on the pace of your recovery, a gradual increase in the intensity of your regular activities is recommended.
  • Complete recovery may take around 6 weeks.

Advantages of OMNIBotics Robotic-Assisted Total Knee Replacement

The OMNIBotics robotic-assisted total knee replacement offers numerous advantages over a conventional knee replacement. These include:

  • Patient-specific surgery
  • 97.4% patient satisfaction at one-year1
  • Accurate implant placement4
  • Precise leg alignment
  • Improved accuracy
  • Performed with minimal incisions5
  • Rapid recovery
  • Reduces length of hospital stay

Risk and Complications of OMNIBotics Robotic-Assisted Total Knee Replacement

As with any surgical procedure, OMNIBotics robotic-assisted total knee replacement may also be associated with the following complications:

  • Injury to the neighboring blood vessels or nerves
  • Knee pain
  • Blood clots in the knee or leg
  • Dislocation of the patella or implant

OMNIBotics® robotic-assisted total knee replacement

OMNIBotics® Patient Guide

OMNIBotics® Evidence Base

Treating The Knee


  1. Keggi JM, Wakelin EA, Koenig JA, Lawrence JM, Randall AL, Ponder CE, DeClaire JH et al. Impact of intra-operative predictive ligament balance on post-operative balance and patient outcome in TKA: a prospective multicenter study. Arch Orthop Trauma Surg. 2021 Jul 13. doi: 10.1007/s00402-021-04043-3
  2. Wakelin EA, Shalhoub S, Lawrence JM, Keggi JM, DeClaire JH, Randall AL, Ponder CE, Koenig JA, Lyman S, Plaskos C (2021) Improved total knee arthroplasty pain outcome when joint gap targets are achieved throughout flexion. Knee Surgery, Sports Traumatology, Arthroscopy:1-9
  3. Koulalis D, et al. 2011. Sequential versus automated cutting guides in computer-assisted total knee arthroplasty. The Knee 18 (2011) 436-442
  4. Koulalis D, et al. 2011. Sequential versus automated cutting guides in computer-assisted total knee arthroplasty. The Knee 18 (2011) 436-442
  5. Plaskos C, Wakelin E, Shalhoub S, Lawrence J, Keggi J, Koenig J, Ponder C, Randall AL, DeClaire JH (2020) Frequency of Soft-Tissue Releases and their Effect on Patient Reported Outcomes on Robotic-Assisted TKA. EPiC Series in Health Sciences 4:240-245
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