Overview
This lecture discusses surgical treatment options for trigeminal neuralgia, focusing on minimally invasive percutaneous procedures and microvascular decompression surgery.
Percutaneous Procedures for Trigeminal Neuralgia
- Minimally invasive option involving needle insertion through the face to reach the trigeminal nerve.
- Approaches include glycerol injection, balloon compression, and thermocoagulation.
- Needle is guided through the foramen ovale to the ganglion or V3 branch of the nerve.
- Needle placement is confirmed by navigation or fluoroscopy and obtaining cerebrospinal fluid (CSF) return.
- Glycerol injection numbs the nerve temporarily; balloon compression compresses and numbs the nerve; thermocoagulation burns the nerve.
- Procedures are quick (30-45 minutes), with same-day discharge and no surgical incision.
- Effect is temporary, ranging from two weeks to two years.
- Suitable for patients unable to undergo general anesthesia or who want to avoid major surgery.
Microvascular Decompression Surgery
- Most effective surgical option for trigeminal neuralgia.
- Involves identifying and separating the vessel compressing the nerve using pads.
- Performed through a small craniotomy (2x3 cm) without brain retractors.
- Provides immediate and lasting pain relief.
- Surgery aims to be as minimally invasive as possible.
Key Terms & Definitions
- Trigeminal Neuralgia — severe facial pain caused by trigeminal nerve irritation or compression.
- Percutaneous Procedure — minimally invasive treatment performed through the skin using needles.
- Glycerol Injection — technique that injects a medication to numb the nerve.
- Balloon Compression — method that compresses the nerve with an inflated balloon.
- Thermocoagulation — technique that burns the nerve using heat.
- Microvascular Decompression — surgery to relieve nerve compression by moving the vessel away from the nerve.
- Foramen Ovale — opening in the skull through which the needle is passed.
- Cerebrospinal Fluid (CSF) — fluid surrounding the brain and spinal cord, used to confirm proper needle placement.
Action Items / Next Steps
- Review the different percutaneous procedures (glycerol injection, balloon compression, thermocoagulation) and their indications.
- Understand the steps and benefits of microvascular decompression surgery.
- Prepare to discuss which patients are candidates for each procedure.