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How i do it: endoscopic transposition technique for hemifacial spasm caused by AICA compression
Wei Zhang1, Fuminari Komatsu2, Yoko Kato3
1Department of Neurosurgery, Yidu Central Hospital of Weifang, Shandong Second Medical University, 4138 Linglongshan Road, Qingzhoushi, Shandong Province, 262500, China.
Acta Neurochirurgica
|December 3, 2025
Summary
Endoscopic-assisted microvascular decompression effectively treats hemifacial spasm caused by anterior inferior cerebellar artery compression. This minimally invasive technique offers clear visualization and favorable surgical outcomes for patients.
Area of Science:
- Neurosurgery
- Minimally Invasive Surgery
Background:
- Anterior inferior cerebellar artery (AICA) compression frequently causes hemifacial spasm (HFS).
- Endoscopic-assisted microvascular decompression (eMVD) provides advantages like minimal invasiveness and enhanced visualization.
Purpose of the Study:
- To evaluate the efficacy of a four-step endoscopic technique for eMVD in treating HFS due to AICA compression.
Main Methods:
- A four-step endoscopic procedure was utilized.
- Key steps included cerebellopontine cistern dissection, facial nerve root exit zone exposure, AICA transposition, and confirmation of decompression and hemostasis.
Main Results:
- The four-step endoscopic approach facilitated effective decompression.
- Favorable surgical outcomes were observed in patients with HFS secondary to AICA compression.
Conclusions:
- The described four-step endoscopic technique is a viable and effective method for managing HFS caused by AICA compression.
- This approach yields positive surgical results, highlighting its clinical utility.
