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Microvascular Decompression: Salient Surgical Principles and Technical Nuances
Published on: July 5, 2011
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Feasibility of underwater microvascular decompression for hemifacial spasm: a technical note
Kenichiro Iwami1, Tadashi Watanabe2, Mao Yokota2
1Department of Neurosurgery, Aichi Medical University, 1-1 Yazakokarimata, Nagakute, Aichi Prefecture, 480-1195, Japan. iwamins@gmail.com.
Acta Neurochirurgica
|July 4, 2021
Summary
Underwater microvascular decompression (MVD) offers a safe and feasible treatment for hemifacial spasm (HFS). This technique effectively relieved symptoms in 95% of patients, with minimal complications observed.
Area of Science:
- Neurosurgery
- Minimally Invasive Procedures
- Neurology
Background:
- Hemifacial spasm (HFS) is a neurological disorder characterized by involuntary facial muscle contractions.
- Microvascular decompression (MVD) is a surgical treatment for HFS, aiming to relieve neurovascular compression.
- Underwater MVD is an emerging technique utilizing continuous irrigation for improved visualization.
Observation:
- A case series of 20 patients with HFS undergoing underwater MVD was evaluated.
- The procedure involved exoscopic wound opening, underwater endoscopic decompression, and exoscopic closure.
- Continuous irrigation with artificial cerebrospinal fluid maintained a clear surgical field without lens fogging.
Findings:
- Underwater MVD clearly visualized neurovascular conflicts in all patients.
- Complete HFS relief was achieved in 95% of cases.
- Transient facial palsy occurred in 5% of patients; no other complications were noted.
Implications:
- Underwater MVD is a safe and feasible surgical option for treating HFS.
- The technique provides excellent visualization and symptom relief.
- Further research is needed to compare its efficacy and safety against conventional endoscopic MVD, particularly regarding eighth cranial nerve protection.
