Anastomoses among the Perforating Arteries

Abstract

Because of their great clinical significance, the authors examined the anastomoses among the perforating arteries in twenty injected hemispheres.
Direct anastomoses were found among the typical perforators of the PCA (65% and 75% of the hemispheres), the BA (45%), the VA (40%), and the premammillary artery (35%). The perforators of the ICA, AChA, MCA and Heubner's artery were connected to the pial arteries in 20%-55%. The anastomoses among the hypothalamic branches were present in 90%-95% of the cases. The authors discussed the possible significance of the anastomoses in the cerebrovascular occlusive diseases.