Microsurgical Anatomy of the Proximal Anterior Cerebral Artery and Anterior Communicating Artery.
- Author:
Ki Chan LEE
1
;
Yong Koo RHEE
Author Information
1. Department of Neurosurgery, College of Medicine, Korea University, Seoul, Korea.
- Publication Type:Original Article
- MeSH:
Adult;
Anterior Cerebral Artery*;
Arteries*;
Brain;
Frontal Lobe;
Humans;
Skull Base
- From:Journal of Korean Neurosurgical Society
1981;10(1):17-26
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The author present this study of microsurgical anatomy of proximal anterior cerebral arteries and anterior communicating arteries in the normal adult brain to provide a clearer basis for strategy in surgery of skull base lesions. A-1 segments varied in length from 1.34 to 1.90cm(average 1.53cm). The length of the anterior communicating artery was usually between 1.0 to 3.4mm(average 1.73mm). The diameter of the A-1 segments varied from 1.45 to 2.50mm(average 1.9mm) and the anterior communicating artery diameters varied from 0.70 to 1.45mm(average 1.1mm). From 5 to 16 basal perforating arteries(average 9.7) exclusive of Heuber's artery arose from A-1 segment. The lateral half of A-1 was a richer source of perforating branches than the medial half;74% arose from the lateral half of the A-1 segment. They arose from posterior(47.4%), postero-superior(34%), and postero-inferior(18%) aspects of the artery. The anterior communicating artery gives off to 6 perforating branches(average 3.4) from its postero-superior(56%), posterior(26%), postero-inferior(15%), and anterior(12%) wall of the artery. Recurrent artery of Heubner was found to have its origin from the A-2 segment in 65%, from the A-1 segment in 10%, and at the level of the anterior communicating artery in 25%. 55% of the recurrent arteries coursed anterior to the A-1 segment and would have been seen upon elevating the frontal lobe prior to visualizing the A-1 segment. Among 10 anterior communicating arteries examined, double anterior communicating artery was found in 2 cases and triple in one case. Duplicating of a portion of A-1 segment was also found in one case.
