STA-MCA bypass

Last revised by Rohit Sharma on 24 Jan 2024

Superficial temporal artery to middle cerebral artery (STA-MCA) bypass is a form of direct revascularization most commonly performed for moyamoya disease, or rarely for intracranial atherosclerotic disease (ICAD), whereby the superficial temporal artery is dissected, passed though a craniotomy/burr hole and directly anastomosed to a branch of the middle cerebral artery 1.  

Generally, and especially in children who have smaller vessels, indirect revascularization procedures such as encephaloduroarteriosynangiosis (EDAS)encephalomyosynangiosis (EMS) or encephaloduroarteriomyosynangiosis (EDAMS) are considered safer 1

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