Muscle Versus Teflon as Interposition Grafts in Microvascular Decompression for Primary Trigeminal Neuralgia:...

Area of Science:

• Neurosurgery
• Surgical Materials Science

Background:

• Microvascular decompression (MVD) is the standard treatment for drug-resistant trigeminal neuralgia (TN).
• Teflon is commonly used but can lead to complications requiring revision surgery.
• Comparing Teflon with autologous muscle grafts in MVD is crucial for optimizing patient outcomes.

Purpose of the Study:

• To compare the clinical outcomes of Teflon versus autologous muscle grafts as interposing materials in MVD for TN.
• To integrate institutional data with a systematic literature review and meta-analysis.

Main Methods:

• Retrospective analysis of an institutional cohort (n=123) using muscle grafts.
• Systematic review and meta-analysis of 69 studies (n=13,288) comparing Teflon and muscle grafts.
• Kaplan-Meier analysis for recurrence-free survival and ANOVA for pain score changes.

Main Results:

• A total of 13,411 patients were analyzed (11,711 Teflon, 1577 muscle grafts).
• Muscle grafts showed a significantly lower risk of pain recurrence (OR=1.550, P<.01) but earlier recurrence (1.55 vs 2.62 years).
• No significant difference in postoperative pain outcomes between the two materials.

Conclusions:

• Autologous muscle graft is a safe and effective alternative to Teflon in MVD for TN.
• Muscle grafts provide comparable immediate pain relief and a lower long-term recurrence risk.
• While recurrence is less frequent, it may occur earlier when using muscle grafts.