Anatomical Variations of the Bifurcation Levels of the Common Carotid Artery and Superior Thyroid Artery

Published Date: 09th October 2024

Publication Authors: Abdelrahim. M

Background
Variations in the carotid arterial system significantly impact atherosclerosis's clinical and surgical management, which predominantly occurs at arterial bifurcations.

Objectives
This study aimed at evaluating anatomical variations in the bifurcation levels of the common carotid artery (CCA) and the superior thyroid artery (STA), emphasizing clinical relevance.

Methods
This was an observational cross-sectional study conducted in June 2021 using 32 embalmed cadavers of adult age from medical schools in Khartoum, Sudan. Sixty-four carotids were examined, noting the levels of CCA bifurcation and STA origin, and their symmetry across both sides of the body.

Results
Among the cadavers studied, CCA bifurcation most commonly occurred at the superior border of the thyroid cartilage (46.9%), followed by the body of the hyoid bone (40.1%). The STA predominantly originated from the external carotid artery (ECA) (65.6%).

Conclusion
No significant correlation was found between the bifurcation levels of the CCA and the origins of the STA. Bilateral symmetry in the bifurcation of the CCA and the origin of the STA was observed in most cases. The study highlights notable variations in the anatomy of the carotid arteries. These findings suggest that pre-surgical imaging and careful planning are crucial to accommodate anatomical diversities.

 

Abdalla, M; Abdelrahim, M et al. (2024). Anatomical Variations of the Bifurcation Levels of the Common Carotid Artery and Superior Thyroid Artery. Cureus. 16(10), p.e71120. [Online]. Available at: http://dx.doi.org/10.7759/cureus.71120 [Accessed 18 October 2024]

 

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