Re-Exploration of Microvascular Decompression in Recurrent Trigeminal Neuralgia and Intraoperative Management Options

Area of Science:

• Neurosurgery
• Pain Management
• Neurology

Background:

• Trigeminal neuralgia (TGN) is a severe facial pain condition.
• Medical management for TGN is often insufficient, necessitating surgical intervention.
• Pain recurrence after initial microvascular decompression (MVD) for TGN is a significant clinical challenge.

Purpose of the Study:

• To evaluate the safety and efficacy of repeat microvascular decompression (re-MVD) for recurrent TGN.
• To compare re-MVD with alternative treatment options for recurrent TGN.
• To assess the role of intraoperative neurolysis during re-MVD.

Main Methods:

• Retrospective analysis of prospectively collected data from patients who underwent re-MVD between 2007 and 2016.
• Assessment of patient outcomes using the Barrow Neurosurgical Institute Pain Index (BNPI).
• Kaplan-Meier analysis to determine the duration of pain relief.

Main Results:

• Eighty-seven percent of patients (n=32) improved their BNPI score to III or better after re-MVD, with 50% achieving a BNPI of 1 or 2.
• Intraoperative neurolysis in 11 patients without clear compression resulted in 90% reporting improved BNPI.
• Median pain-free duration following re-MVD was 36 months, with no significant complications reported.

Conclusions:

• Repeat microvascular decompression (re-MVD) is a safe and effective treatment for recurrent trigeminal neuralgia.
• Intraoperative neurolysis is a valuable technique during re-MVD, particularly when direct compression is not evident.
• Re-MVD should be considered a viable option for patients experiencing TGN recurrence after initial MVD.