Branching patterns and anatomical variations of human aortic arch in Indian population

Original Article

Author Details : K Mohan*, Dhinesh Kumar

Volume : 8, Issue : 3, Year : 2021

Article Page : 162-165

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Background: Knowledge of the aortic arch branching pattern is important during supra-aortic angiography, aortic instrumentation, thoracic and neck surgery. The aortic arch (AA) is located in the superior mediastinum. In 65–80% of the cases, the three branches arise from the aortic arch, namely, the brachiocephalic trunk (BCT), the left common carotid artery (LCCA), and the left subclavian artery (LSA).
Objective: The purpose of this study is to describe different branching patterns of the arch of the aorta in Indian subjects.
Materials and Methods: This observational study is based on dissection performed on Sixty embalmed arches of the aorta in adult Indian cadavers (in manuscript it was written as, 20 dissected heart specimens were collected of still-born fetuses) were exposed and their branches examined during cadaveric dissection in the department of Anatomy. The anatomical variations of the arch of the aorta and its branches, its branches at site of origin, and the distance of each branch from the point of origin to the median plane were measured.
Results: The usual three-branched pattern of arch of aorta was found in 44 specimens (73.33%). The common trunk for both brachiocephalic trunk and left common carotid artery was present in 11 specimens (18.33%). In 2 specimens (3.33%), the arch gives four branches. In 1 specimen (1.67%), give three branches.
Conclusion: The wide spectrum of variations in the anatomical arrangement of the human aortic arch and its branches offer valuable information to catheterize the aortic arch and its branches for safely performing endovascular surgery. These anatomical and morphologic variations in the arch of the aorta and its branches are significant for diagnostic and surgical procedures in the thorax, head and neck regions.

Keywords: Thoracic aorta, Variations, Branches, Vascular surgery, Aortic arch.

How to cite : Mohan K, Kumar D, Branching patterns and anatomical variations of human aortic arch in Indian population. Indian J Clin Anat Physiol 2021;8(3):162-165

Copyright © 2021 by author(s) and Indian J Clin Anat Physiol. This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License (

Article History

Received : 12-07-2021

Accepted : 13-09-2021

Available online : 01-10-2021

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