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Advances in Anatomy
Volume 2014, Article ID 259654, 5 pages
Research Article

Variation of the Lateral Sacral Artery in relation to Sciatic Neuropathy

1Department of Basic Medical Sciences, College of Medicine, King Saud bin Abdulaziz University for Health Sciences, P.O. Box 3660, Riyadh 11481, Saudi Arabia
2Directorate of Prevention and Control of Healthcare Associated Infection, Eastern Province, MOH, P.O. Box 411, Saihat 31972, Saudi Arabia
3Centre for Anatomy and Human Identification, College of Art, Science and Engineering, University of Dundee, Dundee DD1 5EH, UK

Received 5 July 2014; Revised 20 October 2014; Accepted 30 October 2014; Published 13 November 2014

Academic Editor: Huayue Chen

Copyright © 2014 Waseem Al Talalwah et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The lateral sacral artery usually originates from the posterior trunk of the internal iliac artery. The current study of 342 specimens from 171 cadavers (79 male, 92 female) investigated the origin and course of the lateral sacral artery. It was observed to arise from the posterior trunk in 79.1%. Occasionally it originated from the anterior trunk that occurred in 1%. It arose from the sciatic artery in 8.8%, from the superior gluteal artery in 16.8%, and from the inferior gluteal artery in 5.4%. Conversely, the lateral sacral artery is congenital absence in 0.3%. In addition, the lateral sacral artery was single, double, triple, and quadruple in 77.2%, 19.8%, 2.3%, and 0.3%, respectively. Consequently, variability of the lateral sacral artery origin is due to vascular demand as the lateral sacral artery plexus does arise from the earlier trunk development. With variability of the lateral sacral artery origin, there is a variability of the sciatic nerve supply. Knowing the variability of origins, surgeons have to avoid prolonged ligation of the internal iliac artery or its posterior trunk during surgical procedures which may lead to sciatic neuropathy. Therefore, the lateral sacral artery origin, course, and branches are important for clinicians to improve their knowledge and patient management.