Illustrated Encyclopedia of Human Anatomic Variation: Opus II: Cardiovascular System: Arteries
Ronald A. Bergman, PhD
Adel K. Afifi, MD, MS
Ryosuke Miyauchi, MD
Peer Review Status: Internally Peer Reviewed
An isolated dorsospinal artery has been found to supply the anterior spinal artery in only two cases. In one of the cases, the anterior spinal artery had a dual blood supply. A recent angiographic study by Lefournier, et al. of patients undergoing spinal cord vascularization at the thoracolumbar level demonstrated a dual blood supply for the anterior spinal artery in 48% of patients studied, the lowest of the two supplying only the conus medullaris. A single supply was noted in 45% of patients, and three anterior radiculospinal arteries supplied the cord in 7% of patients studied. In one case, both radiculospinal arteries supplied the conus medullaris.
The anatomic variant arises when the anastomosis of segmental arteries occurs some distance from the spine; the persistence of the initial portion of the primitive segmental trunk giving rise to a sole dorsospinal artery, directly from the aorta.
Bert S., Iyriboz A.T., Barret F. Zouaoui A.and J. Chiras (1995). Angiographic study of spinal cord vascularization at the thoraco-lumbar level. J Neuroradiol; 22: 12-19.
Chiras J.and Merland J.J. (1979) The dorsospinal artery, a little known anatomical variant: its importance in spinal angiography. J. Neuroradiol; 6:93-100.
Clavier E., Guimaraems L., Chiras J., Merland J.J. and J. Vasquez (1987). Isolated dorsospinal artery supplying anterior spinal artery. Neuroradiology 1987:29:213.
Lefournier, V., Bessou, P., Gailloud, P., Vasdev, A., Rüfenacht, D., and K. Boubagra. (1998) Direct emergence of the dorsospinal artery from the aorta supplying the anterior spinal artery: Report of two cases. AJNR Am. J. Neuroradiol. 19:1961-1962.
Thron AK. (1988) Clinical applications. In: Vascular Anatomy of the Spinal Cord. Wien: Springer. : 65,70.
Section Top | Title Page
Please send us comments by filling out our Comment Form.
All contents copyright © 1995-2018 the Author(s) and Michael P. D'Alessandro, M.D. All rights reserved.
"Anatomy Atlases", the Anatomy Atlases logo, and "A digital library of anatomy information" are all Trademarks of Michael P. D'Alessandro, M.D.
Anatomy Atlases is funded in whole by Michael P. D'Alessandro, M.D. Advertising is not accepted.
Your personal information remains confidential and is not sold, leased, or given to any third party be they reliable or not.
The information contained in Anatomy Atlases is not a substitute for the medical care and advice of your physician. There may be variations in treatment that your physician may recommend based on individual facts and circumstances.