Neuro Spine SurgeryDr. S. K. RajanMinimally Invasive Spine Surgery

Chief, Neuro Spine Surgery & Additional Director, Neurosurgery, Artemis Hospitals, Gurgaon, India

Part 7 of 11 in Recent Advances in the Field of Spine Surgery

Robotic vs Navigation-Guided Spine Surgery

July 5, 2026

Robotics in spine surgery works on the same underlying principle as navigation-guided MISS: the difference is who holds the screwdriver. In navigation-guided surgery, the surgeon executes the pre-planned trajectory using navigated instruments; in robotic surgery, the robot holds the screwdriver and executes it.

Dr. Rajan says the guidance logic is essentially identical between the two, and robotics adds most of its value in high-screw-count cases like scoliosis correction, where consistency across many screws and reduced surgeon fatigue over a long case matter more than in a typical one- or two-level procedure.

This guide is based on a live Jivo Masterclass — Dr. S. K. Rajan taught doctors across Africa on July 5, 2026.

FROM THE LIVE Q&A

DR

Dr. Daniel Abebe, Medical Director

For a patient with multiple disc prolapses at both cervical and lumbar levels, is minimally invasive surgery possible, or is open surgery required?

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Dr. S. K. Rajan

Multi-level thoracic stenosis and multi-level lumbar disc disease can both be managed with MISS, including fixation at two or three levels, and technology now makes MISS technically feasible at four or even five levels — though each patient has to be assessed individually. As a broad guide: one- or two-level lumbar disease, MISS without question; three to four levels, roughly half our patients proceed with MISS and half need open surgery, mainly for anatomical reasons, not because MISS is inferior. For sequencing combined cervical and lumbar disease: if there's cervical cord compression causing weakness, we operate on the cervical spine first; if the cervical issue is just radiating arm pain without cord compression, we address the lumbar spine first.

See all 8 questions from this masterclass →

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Frequently Asked Questions

What is the standard treatment for scoliosis with a Cobb angle greater than 10 degrees?

A Cobb angle under 10 degrees isn't classified as scoliosis at all. Between 10 and 30 degrees, observation with serial X-rays is appropriate — the curve is largely safe at this stage. The tipping point for a surgical discussion is a Cobb angle approaching 40 degrees; below that, there's generally no urgent surgical indication. Beyond the angle itself, the second key factor is whether the curve stays within the coronal zone of stability — as long as it does, it's relatively safe, but once vertebral segments shift outside that zone, the curve is at high risk of rapid progression and surgery becomes necessary.

Doctors who don't perform MISS themselves often face a perception battle when counselling patients. How should they address patient fears?

The biggest source of confidence for a patient is seeing or hearing from patients who have undergone the procedure — testimonials describing next-day mobilisation are very powerful, and the Artemis Hospitals website carries many of them. Beyond that, as technology spreads to more centres and results accumulate, outcomes will speak for themselves. The current primary limitation is availability of technology, not the evidence.

When we say '99% safe,' patients sometimes read this as '99% chance of a full recovery.' Can you clarify?

Safety and success are entirely separate concepts. When we say 99% safe, we mean that out of 100 patients, 99 will not deteriorate — they will not be made worse by the surgery. Success is different: a patient who arrives already paralysed, no technology anywhere in the world can guarantee that patient will walk. Success depends on the patient's pre-operative condition, the stage of disease on MRI, and their own functional expectations — which is why a one-to-one consultation is essential before anyone is given realistic clarity on likely outcomes.

There is often overlap between neurology and spine surgery, with neurologists recommending conservative management until deterioration occurs. How do you decide when surgery is right — for example in a 65-year-old with early disc degeneration and 20 years of quality life ahead?

This is a very large grey zone. In general, a patient with acute pain of short duration, no neurological weakness, and quality of life not severely compromised should get a trial of conservative management first. At the other end, a patient who has tried conservative measures without relief, has developed neurological weakness or significantly impaired quality of life, and has imaging confirming nerve compression, needs an honest conversation about surgery as a genuine option. Individual lifestyle demands matter too — the same imaging findings in a sedentary 70-year-old versus someone who needs to travel and stay professionally active can lead to very different recommendations. Treatment has to be individualised.

What hygiene and precautions should be observed after spine surgery?

First, preventing infection: making surgery as minimally invasive as possible, prophylactic antibiotics, and early removal of the urinary catheter, since UTIs are a common source of secondary infection. Second, wound care: dressing changes every second day until suture removal at day ten, sponge bathing rather than full immersion until healed. Third, movement precautions: for three months after discectomy or fusion, no lifting weights, no sitting on the floor, no squatting or forward bending; in the first month, no sitting or travelling continuously for more than 30 minutes without a break. We take follow-up X-rays every month for three months, then every three months up to a year.

What is the actual difference between robotic and navigation-guided spine surgery?

The underlying principle is the same; the difference is who holds the screwdriver. In navigation-guided surgery, the surgeon executes the pre-planned trajectory using navigated instruments; in robotic surgery, the robot holds the screwdriver and executes it.

When does robotic spine surgery offer a real advantage over navigation alone?

Mainly in high-screw-count cases like scoliosis correction, where consistency across many screws and reduced surgeon fatigue over a long case matter more than in a typical one- or two-level procedure.

Is the guidance logic behind robotic spine surgery different from navigation-guided surgery?

No, the guidance logic is essentially identical between the two.

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