Abstract
Side-to-side anastomosis is rarely performed by neurosurgeons, and the best conditions for microvascular side-to-side anastomosis are still unknown. To discover which conditions maximize blood flow through the anastomosis, side-to-side anastomosis between bilateral common carotid arteries was studied in 25 rats. The results were that the anastomotic orifice should be larger than twice the vessel diameter, and that the anterior wall should be sutured interruptedly. As clinical applications for side-to-side anastomosis, revascularization of the anterior cerebral artery (ACA) using inter-ACA anastomosis was performed in two patients with excellent results.