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Updated: Dec 18, 2025

Microsurgical Clip Obliteration of Middle Cerebral Aneurysm Using Intraoperative Flow Assessment
Published on: September 25, 2009
How I do it: superficial temporal artery-middle cerebral artery bypass for flow augmentation and replacement
Caleb Rutledge1, Daniel M S Raper2, Adib A Abla3
1Department of Neurological Surgery, University of California San Francisco, 505 Parnassus Ave, San Francisco, CA, 94143, USA. william.rutledge@ucsf.edu.
Background:
The superficial temporal artery-middle cerebral artery (STA-MCA) bypass augments blood flow in patients with cerebral ischemia or replaces flow in patients with complex aneurysms or skull base tumors requiring vessel sacrifice.
Method:
We provide a description of the STA-MCA bypass with figures and video to illustrate the procedure.
Conclusion:
The STA-MCA end-to-side anastomosis is a foundational skill for the cerebrovascular surgeon and a building block for more complex bypasses.

