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Updated: May 22, 2026

Microvascular Decompression: Salient Surgical Principles and Technical Nuances
Published on: July 5, 2011
Hemimasticatory spasm treated with microvascular decompression of the trigeminal nerve
Kyu-Hyon Chon1, Jong-Myong Lee, Eun-Jeong Koh
1Department of Neurosurgery, Chonbuk National University Hospital and Medical School, 560-182, San 2-20, Keumamdong, Dukjin-Gu, Chonju, Republic of Korea.
Abstract:
Hemimasticatory spasm is a very rare disorder of the trigeminal nerve characterized by paroxysmal involuntary contraction of the jaw-closing muscles. The mechanisms leading to hemimasticatory spasm are still unclear. Recently, injection of botulinum toxin has become the treatment of choice due to its excellent results. We report a case of a successful treatment of hemimasticatory spasm via microvascular decompression of the motor branch of the trigeminal nerve.
