Encyclopedia entry
Dorsospinal Artery
Abstract
A dorsospinal artery from the aorta may supply the anterior spinal artery but it has been rarely reported. The dorsospinal artery has been reported three times, 1) on the right side at the T9 level, 2) once on the left at the T10 level, and 3) on the right side at the T8 level. 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.
A dorsospinal artery from the aorta may supply the anterior spinal artery but it has been rarely reported. The dorsospinal artery has been reported three times, 1) on the right side at the T9 level, 2) once on the left at the T10 level, and 3) on the right side at the T8 level.
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.
Riferimenti dell’opera originale
Elenco riportato come compare nella fonte, senza normalizzazione dei formati bibliografici.
- 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.
Anatomical classification
- Systems:
- Cardiovascular system
Content provenance
Adaptation
Adaptation of «Dorsospinal Artery — Illustrated Encyclopedia of Human Anatomic Variation: Opus I: Muscular System» by Ronald A. Bergman, Adel K. Afifi, Ryosuke Miyauchi. Source: https://www.anatomyatlases.org/AnatomicVariants/Cardiovascular/Text/Arteries/Dorsospinal.shtml Original work distributed under the CC BY-NC-SA 4.0 licence (https://creativecommons.org/licenses/by-nc-sa/4.0/deed.it). Adaptation by Redazione AIVA. Changes from the original: Testo originale inglese riprodotto integralmente e riorganizzato nel formato scheda del portale (sintesi, testo, riferimenti), senza modificarne le affermazioni. La traduzione italiana non è ancora stata eseguita, e la pagina lo dichiara. Le figure non sono state copiate: sono collegate alla pagina d’origine. This publication is not approved or endorsed by the authors of the original work.
Licence
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