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Robotic Surgery of the Hip and Knee

How does robotic surgery work?

Robotic knee and hip surgery utilises a mechanical/robotic arm to replace damaged joint surfaces. However, the surgeries are not done by a robot but by Dr Preyen Naidu, using his advanced surgical skills, medical expertise and experience in handling robotic software.

Robotic arm-assisted technology allows Dr Naidu to create a surgical plan based on the patient’s diagnostic assessment and anatomy. Then, a three-dimensional model of the knee or hip is made, and the position of the implant is prepared preoperatively.

Robotic surgery is considered a standard joint replacement procedure that makes use of a robotic arm under the supervision of a qualified orthopaedic surgeon, Dr Preyen Naidu.

There are several advantages of robotic joint replacement surgery, such as the following:

  • A safely performed procedure
  • Minimal risk of damage to nearby tissue
  • Improved accuracy in positioning the implant
  • Minimal postoperative pain
  • Improved function of the affected joint

Orthopaedic robotic devices work in different ways. For example, some forms of robotic-assisted technology rely on joint imaging from a CAT or CT scan in order to plan bone resections. These robotic devices use information from the scans to develop an operative plan to calculate the parts and amount of bone to be removed. This technique is used to align the prosthetic implant, restore healthy joint function and improve patient satisfaction.

Robots that do not rely on image-based technology use intelligent mapping to develop a three-dimensional image for the devices to use. These 3D images are used to ensure precise bone resection and alignment. What’s left of the procedure is carried out by the orthopaedic surgeon, who is guided by the resection plan placed on the robotic arm.

Even with the lack of long-term evidence, short-term data indicates a faster recovery, minimal pain and a low risk of complications when robotic-assisted surgery is carried out.

What should I consider before the procedure?

If the patient qualifies for standard hip or knee replacement surgery, the same can be applied to their eligibility for robotic hip or knee replacement surgery. If the following conservative treatment measures do not help, the patient would largely benefit from joint replacement surgery:

  • Cortisone injections
  • Standard weight loss intervention (diet and exercise)
  • Physiotherapy
  • Bracing

The first stage of robotic hip or knee replacement surgery involves using the robotic system to develop a 3D image of the damaged joint. The rendering is made of unique features of the joint, including its size and shape.

Afterwards, Dr Naidu will use the robotic arm system to facilitate the joint replacement procedure. The robotic arm is used to control the blade and reshape the bones in preparation for implant positioning. Therefore, the procedure involves creating fewer incisions to ensure optimal accuracy and reduced risk of prolonged postoperative pain.

What should I know after the procedure?

The typical recovery period following traditional joint replacement surgery can be between four to six weeks. Fortunately, robotic-assisted technology can cut the recovery time in half.

If you feel this procedure suits you and are eligible for robotic surgery, don't hesitate to contact us for a consultation if you require further information on the subject.


Robotic joint replacement surgery offers numerous benefits, which include the following:

  • Improved surgical planning
  • Enhanced precision
  • Better joint alignment

While some risks (nerve damage, blood clots and infection) are involved, similar to open surgery, if performed by a qualified surgeon, these risks may be reduced significantly.

Robotic surgery enables surgeons to perform complex procedures minimally invasively.


Suite C2-7. Second Floor, Block C,
Netcare Blaauwberg Hospital,
Waterville Crescent
Cape Town