What Is the Surgical Treatment for Trigeminal Neuralgia When Medical Management Is Insufficient?
Clinical Scenario
Trigeminal neuralgia (ICD-11 8B82.0) is characterised by severe, episodic facial pain along the distribution of the trigeminal nerve. When medical management alone does not provide adequate control, surgical intervention becomes the next consideration. The choice of procedure is guided by imaging findings and the patient's overall fitness for surgery.
Surgical Management — Overview
Surgical options range from open procedures targeting neurovascular anatomy to minimally invasive and non-invasive alternatives. The structured protocol defines which approach is appropriate based on MR imaging findings and patient suitability — and covers additional procedure types beyond the most widely known.
Full procedure selection criteria, sequencing, and decision points are available in the complete protocol.
References
- Microvascular decompression (MVD) should be considered in those patients with neurovascular compression on imaging, and who are fit to undergo a general anaesthetic.
- Some neurosurgeons will carry out internal neurolysis ('nerve combing') if no vascular compression is found at the time of the surgery.
- Percutaneous neuroablative procedures at the Gasserian ganglion level — includes radiofrequency thermocoagulation, balloon compression and glycerol rhizolysis.
- Neuroablative treatments should be the preferred surgical intervention if MR imaging does not demonstrate any neurovascular compression and medical management is insufficient.
- Stereotactic Radiosurgery (SRS) — radiosurgery for TN unlike other surgical interventions is minimally invasive, does not require sedation or general anaesthesia and is typically performed as a day case procedure.
- SRS is considered a primary alternative to the invasive surgical techniques and has been found to be safe according to national guidelines.
- Peripheral procedures — these procedures involve treating the terminal branches of the trigeminal nerve, and hence depend on accurate assessment of which nerve branch is acting as the trigger area.
- The relevant nerve branch can then either be injected with alcohol, or surgically exposed and treated with cryotherapy or neurectomy.
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