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Updated: Jan 22, 2026

Microvascular Decompression: Salient Surgical Principles and Technical Nuances
Published on: July 5, 2011
The Risk Factors for Facial Numbness After Microvascular Decompression in Patients With Trigeminal Neuralgia.
Wen-Bo Zhang1,2, Qiu-Yang Sun1,2, Ling-Zhao Min1,2
1Department of Neurosurgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine.
Microvascular decompression (MVD) for trigeminal neuralgia (TN) offers good symptom relief. However, longer surgery and hospital stays increase the risk of facial numbness, highlighting the need for efficient procedures.
Area of Science:
- Neurosurgery
- Neurology
Background:
- Trigeminal neuralgia (TN) is a debilitating condition often treated with microvascular decompression (MVD).
- MVD is the preferred surgical intervention for TN, necessitating evaluation of its outcomes and risks.
Purpose of the Study:
- To evaluate the surgical outcomes, intraoperative findings, complications, and risk factors associated with MVD in a large cohort of TN patients.
- To identify factors contributing to postoperative complications, specifically facial numbness.
Main Methods:
- Retrospective analysis of 84 patients undergoing MVD for TN between January and June 2017.
- Surgical outcomes, postoperative complications, and risk factors were assessed using binary logistic regression analysis.
Main Results:
- 69 out of 84 patients achieved complete symptom relief (BNI I-II).
- 28 patients experienced postoperative facial numbness (BNI III-IV).
- Longer operation time (OR 1.153) and hospital stay (OR 1.371) were significant risk factors for facial numbness.
Conclusions:
- MVD demonstrates a good response rate for trigeminal neuralgia.
- Facial numbness is a notable complication, with prolonged surgery and hospital stay as identified risk factors.
- Optimizing operation time and efficiency can potentially reduce the incidence of facial numbness while maintaining surgical success.
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