Vice Chairman and HOD, Neuro Surgery and Neuro Spine, BLK-Max Super Speciality Hospital, New Delhi, India
Part 5 of 8 in Recent Advances in Spine and Neurosurgery
Trigeminal Neuralgia and Microvascular Decompression: A Cure for Facial Pain
May 31, 2026
Trigeminal neuralgia (caused by vascular or tumour compression of the nerve at its root entry zone) is not life-threatening but is one of the most severe pain syndromes in clinical medicine, leaving patients unable to eat, brush their teeth or carry out normal daily activities. Medication with carbamazepine and similar agents helps initially, but higher doses over time bring sedation, cognitive effects and bone marrow suppression, at which point patients unhappy with their quality of life become surgical candidates.
Microvascular decompression is a small posterior fossa craniotomy: the cerebellum is gently retracted, the fifth cranial nerve identified, and the offending blood vessel (sometimes more than one) separated from the nerve with a small Teflon graft placed between them. Results are excellent: patients can stop all medication within a few weeks of surgery and are completely relieved of pain.
This guide is based on a live Jivo Masterclass — Dr. Anil Kumar Kansal taught doctors across Africa on May 31, 2026.
FROM THE LIVE Q&A
Dr. Ivan, Uganda
How close are we to restoring function in patients with complete spinal cord injuries?
Dr. Anil Kumar Kansal
Complete spinal cord injuries will not result in complete neurological recovery, and some patients recover only minimally. What we can address is the secondary symptoms: pain and spasticity, managed with baclofen or morphine pumps, and dorsal cord stimulators, which can improve sensation and reduce spasticity, with some incomplete-injury patients regaining a degree of leg power combined with physiotherapy. If hand function is preserved, we train patients to manage daily life with their upper limbs and a wheelchair. But for complete injuries specifically, meaningful motor recovery is not something we can promise.
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Frequently Asked Questions
What is the role of stem cells in spinal cord injury management?▼
I conducted a study on this myself — we took stem cells from the iliac bone and implanted them at the injury site in around 20 patients. One patient showed some improvement, but it couldn't be separated from natural recovery under medication, and statistically we found no significant benefit. We discontinued the trial. Stem cell therapy for complete spinal cord injury is still not recommended anywhere in the world; for partial injuries there may be some benefit, but meaningful recovery from stem cells in complete injuries has not been demonstrated.
What are the current limitations of awake craniotomy and how are they being addressed?▼
Awake craniotomy, used for tumours near the motor cortex or speech areas, requires full patient cooperation throughout — some patients become agitated under partial sedation and we've had to convert to general anaesthesia. For international patients, a translator has to be present in the operating room the entire time, which adds another layer of difficulty. Personally I'm not very keen on it given how demanding it is for the patient; we now prefer using preoperative functional MRI to map eloquent areas and then operate under general anaesthesia while avoiding those mapped regions, which reduces the need for awake craniotomy in many cases.
I have a case of a hemangioma found on MRI in the cervical vertebral region. At what point does the patient benefit from surgery?▼
Small vertebral hemangiomas are benign and don't require treatment unless they cause problems. If it's a large hemangioma involving the pedicle, causing vertebral body destruction, or resulting in a fracture or neural compression, then decompression and spinal fixation are required. Share the MRI report with the Jivo team and we can assess based on size and extent.
As a leading neurosurgeon who has treated many international patients, what's your perspective on how direct doctor-to-doctor communication with African colleagues improves patient care?▼
Communication is key. I'd suggest two things: topic-oriented sessions on one specific subject at a time — lumbar spine surgery, or brain tumours — where everyone shares experience and problems and we learn from each other, since doctors from Africa and India face similar socioeconomic challenges. And continuous feedback after a patient returns home: the local doctor monitors recovery and communicates with us on repeat imaging and medication adjustments. That collaboration, by WhatsApp or email at any time, directly improves outcomes.
Can DBS help patients with epilepsy, chronic pain, or psychiatric disorders?▼
For intractable epilepsy, we prefer other surgical methods first — removing an identified lesion (medial temporal lobectomy, or hemispherectomy in appropriate cases). If no focus is identifiable and epilepsy remains uncontrolled, electrodes can be placed in the anterior thalamus, with roughly 70 to 80% success; vagal nerve stimulation is the alternative. For psychiatric disorders we have done some frontal DBS placements, but results are variable, the procedures are not curative, and patients still need to continue medication.
What causes trigeminal neuralgia?▼
Vascular or tumour compression of the nerve at its root entry zone.
Is trigeminal neuralgia life-threatening?▼
No, but it is one of the most severe pain syndromes in clinical medicine, leaving patients unable to eat, brush their teeth or carry out normal daily activities.
When does a trigeminal neuralgia patient become a surgical candidate rather than continuing medication?▼
Medication such as carbamazepine helps initially, but higher doses over time bring sedation, cognitive effects and bone marrow suppression, at which point patients unhappy with their quality of life become surgical candidates.
What does microvascular decompression surgery involve?▼
A small posterior fossa craniotomy in which the cerebellum is gently retracted, the fifth cranial nerve identified, and the offending blood vessel, sometimes more than one, separated from the nerve with a small Teflon graft.
How effective is microvascular decompression for trigeminal neuralgia?▼
Results are excellent. Patients can typically stop all medication within a few weeks of surgery and are completely relieved of pain.
In This Series: Recent Advances in Spine and Neurosurgery
- 1.Recent Advances in Spine and Neurosurgery
- 2.Minimally Invasive Spine Surgery: Percutaneous Discectomy, Kyphoplasty and Disc Replacement
- 3.Endoscopic Brain Surgery: Third Ventriculostomy and Colloid Cyst Removal
- 4.Deep Brain Stimulation for Parkinson's Disease: Timing, Targets and Cost
- 5.Trigeminal Neuralgia and Microvascular Decompression: A Cure for Facial Pain
- 6.Gamma Knife, Robotic Spine Surgery and the Limits of Current Technology
- 7.What Spine and Brain Surgery Complication Rates Actually Look Like
- 8.Complete Spinal Cord Injury: A Realistic Prognosis and What Can Still Be Treated