Trigeminal Neuralgia: Rhizotomy

Radiofrequency Rhizotomy

The use of electrocoagulation (heat) for the treatment of trigeminal neuralgia. Radiofrequency rhizotomy (RF) of the trigeminal nerve ganglion where the nerve divides into its three main branches is a needle puncture technique used for the treatment of trigeminal neuralgia.

Procedure

The patient can be awake under sedation to provide feedback of any facial numbness. Surgeons reach the ganglion by inserting a specialized needle through the cheek, then through an opening in the bone where the lowest branch of the trigeminal nerve enters the face. The surgeon then heats the branch via the needle. This procedure selectively damages the nerve in order to interfere with the transmission of the pain signals to the brain.

Post-procedure

This is considered a more straightforward intervention, only necessitating a few hours stay in hospital.

Risk of Radiofrequency rhizotomy

Varying degrees of facial numbness.

Glycerol Rhizotomy

The use of injected glycerol for the treatment of trigeminal neuralgia. Glycerol rhizotomy of the trigeminal nerve ganglion where the nerve divides into its three main branches is a needle puncture technique used for the treatment of trigeminal neuralgia.

Procedure

The patient can be awake under sedation to provide feedback of any facial numbness. Surgeons reach the trigeminal ganglion by inserting a specialized needle through the cheek, then through an opening in the bone where the lowest branch of the trigeminal nerve enters the face. The surgeon then injects glycerol into the branch. This procedure selectively damages the nerve in order to interfere with the transmission of the pain signals to the brain.