A neurosurgical view of anatomical variations of the distal anterior cerebral artery: an anatomical study

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Object

The vascularization pattern of the anatomy of the distal anterior cerebral artery (ACA) remains a subject of debate. The authors provide detailed information about the distal ACA and shed light on issues concerning it that have not previously been adequately discussed.

Methods

Fifty adult human brains (100 hemispheres) were obtained during routine autopsies. Cerebral arteries were separately cannulated and injected with latex. The vascularization patterns of the cortical branches and the variations of the arteries were investigated. The authors found that the distal ACA supplied all the inner surfaces of the frontal and parietal lobes and a median of one third of the outer surfaces. The origin of the arteries from the main trunk and their exit angles affected the vascularization patterns of the hemispheres. The authors redefine controversial terminology regarding the callosomarginal artery.

Conclusions

In each hemisphere, the vascularization pattern of the distal ACA is different to a greater or lesser extent. An awareness of this fact will contribute significantly to surgical interventions.

Abbreviations used in this paper: ACA = anterior cerebral artery; ACoA = anterior communicating artery; AIFA = anterior internal frontal artery; CC = corpus callosum; CMA = callosomarginal artery; FPA = frontopolar artery; HRA = Heubner recurrent artery; IFA = internal frontal artery; IIPA = inferior internal parietal artery; MIFA = middle IFA; OFA = orbitofrontal artery; PIFA = posterior IFA; PLA = paracentral lobe artery; PrCA = pericallosal artery; SIPA = superior internal parietal artery.
Article Information

Contributor Notes

Address reprint requests to: Hasan Caglar Ugur, M.D., Ph.D., Department of Neurosurgery, Ankara University, 06100 Sihiye, Ankara, Turkey. email: hasanugur2001@hotmail.com.

© Copyright 1944-2019 American Association of Neurological Surgeons

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