NeurosurgeryDr. Anil Kumar KansalBrain & Spine Surgery

Vice Chairman and HOD, Neuro Surgery and Neuro Spine, BLK-Max Super Speciality Hospital, New Delhi, India

Part 6 of 17 in Recent Advances in Neurosurgery

When Does Disc Herniation Need Surgery? Red Flags and Treatment Decisions

August 6, 2026

Disc herniation is usually treated conservatively first, but bladder involvement or significant weakness such as foot drop are red flags that mean surgery for disc herniation should not be delayed.

Starting with conservative treatment

Most patients with disc herniation are initially managed with conservative treatment: physiotherapy, painkillers, muscle relaxants, rest, and modalities such as ultrasonic and thermal therapy or TENS. If a patient responds to this, with a period of rest included, treatment can continue along conservative lines without surgery.

The red flags that change the plan

Two red flags call for early surgery rather than continued conservative care for disc herniation: bladder involvement, meaning the patient has trouble passing urine or stool, and significant weakness, including foot drop. When either of these signs is present, the recommendation shifts from conservative management to early surgical treatment.

Weighing surgery against ongoing medication

For older patients where surgery is not clearly essential, the decision often comes down to how much pain medication is needed and how much daily activity is limited, for example whether a patient can still walk 500 metres. Where there is a neurological deficit, such as limb weakness or bladder or bowel involvement, surgery is advised because the long-term result is usually better and the ongoing cost of long-term medication can end up similar to or higher than the cost of surgery. This kind of cost-benefit and functional assessment is a routine part of deciding on neurosurgery for disc herniation.

← Minimally Invasive and Endoscopic Surgery for Lumbar Disc Herniation | Series index | Kyphoplasty for Osteoporotic Spinal Compression Fractures →

This article is based on a Jivo Masterclass session conducted by Dr. Anil Kumar Kansal, Vice Chairman and HOD, Neurosurgery and Neuro Spine Department, BLK-Max Super Speciality Hospital, New Delhi. The article has been summarised with the assistance of an AI tool from the original masterclass recording. Watch the full Masterclass recording

This guide is based on a live Jivo Masterclass — Dr. Anil Kumar Kansal taught doctors across Africa on July 13, 2025.

FROM THE LIVE Q&A

DR

Dr. Al-Mustafa Nuruddeen

What are the success rates of these surgical procedures generally, and what are the absolute contraindications to surgery?

AK

Dr. Anil Kumar Kansal

Absolute contraindications include cardiac problems, any bleeding or coagulation disorders, or severe infection in the body. If a patient — for example with trigeminal neuralgia — is responding well to medication at a controllable dose, we will not operate; surgery is offered when the patient's pain is not relieved despite medical management.

See all 6 questions from this masterclass →

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Frequently Asked Questions

What complications are expected from trigeminal neuralgia surgery (microvascular decompression)?

There can be anaesthesia-related complications. On the surgical side, we can get a haematoma in the cerebellum, sometimes bleeding, sometimes infection, or damage to the nerves — though our infection rate is very low. One patient developed chemical meningitis leading to hydrocephalus and needed a shunt, but the rest did very well. Initially some patients complained of partial hearing loss from traction on the eighth nerve; now we use minimal traction, so results are good and complications are minimal.

What is the recurrence rate of the tumours (in cases treated with microvascular decompression / related skull-base surgery)?

Only about 5%, not more than that. In our setup we have done more than 100 surgeries and have not had to redo any; some patients may have mild symptoms that can be managed with medicine or reassurance, but otherwise the results are good.

Are there any recent advances in the management of paediatric congenital hydrocephalus?

We do endoscopic third ventriculostomy in paediatric congenital hydrocephalus, but success is slightly lower at a young age — around 70-80%. A programmable shunt has a 95% success rate, but shunt revision and infection are other factors to weigh; endoscopic third ventriculostomy is a better choice when it succeeds, since the chances of recurrence problems afterward are very low.

What is the time needed for full recovery, and what are the complications, for trigeminal neuralgia treatment (microvascular decompression)?

We keep the patient for three or four days; the pain is usually gone right after surgery. We continue medication for one month afterward and then stop it. We mobilise the patient to walk from the next day, and they generally do very well. We do a post-operative CT scan to check for any bleeding or collection, but results are close to perfect.

What is the success rate of the surgery, what are the financial implications, and are the screws inserted in robotic spine surgery absorbable or will they need to be removed post-op?

The screws used in spine surgery are not absorbable — they remain in place lifelong. Financially, robotic-assisted spine surgery costs about $1,000 to $2,000 extra on top of a normal spine surgery of around $7,000, but the advantage is that screw misplacement drops to less than 1%, which is significant because a single misplaced screw can undermine the whole surgery — so while it adds cost, it also adds real value to the outcome.

What red flag symptoms mean disc herniation surgery should not be delayed?

Bladder involvement, meaning trouble passing urine or stool, and significant weakness such as foot drop are the two red flags that call for early surgery rather than continued conservative care.

Is surgery always the first treatment for disc herniation?

No. Most patients are managed conservatively first, with physiotherapy, painkillers, muscle relaxants, rest and modalities such as ultrasonic or thermal therapy or TENS, and treatment continues along these lines if the patient responds.

How do doctors weigh surgery against ongoing medication for older patients?

The decision often depends on how much pain medication is needed and how far daily activity is limited, for example whether a patient can still walk 500 metres, alongside whether there is a neurological deficit such as limb weakness or bladder or bowel involvement, since long-term medication costs can end up similar to or higher than the cost of surgery.

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