Morphometry and Variations of Bony Ponticles of the Atlas Vertebrae (C1) in Kenyans

Atlas bridges, the bony outgrowths over the third segment of the vertebral artery are associated with compression of the artery and nerves. There are limited studies comparing morphometry of the complete atlas bridges and that of the ipsilateral transverse foramen. Bilateral and gender differences i...

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Autores principales:	Karau Bundi,P, Ogeng´o,J. A, Hassanali,J, Odula,P. O
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2010
Materias:	Atlas bridges Vertebral artery Compression Kenyans
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000400006
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spelling	oai:scielo:S0717-950220100004000062011-03-31Morphometry and Variations of Bony Ponticles of the Atlas Vertebrae (C1) in KenyansKarau Bundi,POgeng´o,J. AHassanali,JOdula,P. O Atlas bridges Vertebral artery Compression Kenyans Atlas bridges, the bony outgrowths over the third segment of the vertebral artery are associated with compression of the artery and nerves. There are limited studies comparing morphometry of the complete atlas bridges and that of the ipsilateral transverse foramen. Bilateral and gender differences in the morphometry of the complete bridges remain relatively unexplored. One hundred and two atlas vertebrae (49 male and 53 female) obtained from the Osteology Department of the National Museums of Kenya were used for this study. The presence of complete posterior atlas bridge (retroarticular canal) and lateral bridge (supratransverse foramen) was noted. Measurements were taken for the diameters of foramina, and the ipsilateral transverse foramina and their areas calculated. Complete posterior bridges occurred in 14.6% and 13.6% on the right and left sides respectively. The lateral bridge was found in 3.9% of the cases on the right side only. The complete posterior bridges had a cross-sectional area of 23.44mm2 on the right and 24.98mm2 on the left side. The lateral bridges had a mean cross-sectional area of 27.30mm2. The right and left transverse foramina had mean crosssectional area of 36.30mm2 and 37.20mm2 respectively, which was significantly larger than that of the ipsilateral complete and posterior bridges. The smaller dimensions of the complete atlas bridges compared to the ipsilateral transverse foramen suggest that they may predispose to vertebrobasilar insufficiency, Barre-Lieou and cervicogenic syndromes due to compression of the contents in the foramina.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.28 n.4 20102010-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000400006en10.4067/S0717-95022010000400006
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Atlas bridges Vertebral artery Compression Kenyans
spellingShingle	Atlas bridges Vertebral artery Compression Kenyans Karau Bundi,P Ogeng´o,J. A Hassanali,J Odula,P. O Morphometry and Variations of Bony Ponticles of the Atlas Vertebrae (C1) in Kenyans
description	Atlas bridges, the bony outgrowths over the third segment of the vertebral artery are associated with compression of the artery and nerves. There are limited studies comparing morphometry of the complete atlas bridges and that of the ipsilateral transverse foramen. Bilateral and gender differences in the morphometry of the complete bridges remain relatively unexplored. One hundred and two atlas vertebrae (49 male and 53 female) obtained from the Osteology Department of the National Museums of Kenya were used for this study. The presence of complete posterior atlas bridge (retroarticular canal) and lateral bridge (supratransverse foramen) was noted. Measurements were taken for the diameters of foramina, and the ipsilateral transverse foramina and their areas calculated. Complete posterior bridges occurred in 14.6% and 13.6% on the right and left sides respectively. The lateral bridge was found in 3.9% of the cases on the right side only. The complete posterior bridges had a cross-sectional area of 23.44mm2 on the right and 24.98mm2 on the left side. The lateral bridges had a mean cross-sectional area of 27.30mm2. The right and left transverse foramina had mean crosssectional area of 36.30mm2 and 37.20mm2 respectively, which was significantly larger than that of the ipsilateral complete and posterior bridges. The smaller dimensions of the complete atlas bridges compared to the ipsilateral transverse foramen suggest that they may predispose to vertebrobasilar insufficiency, Barre-Lieou and cervicogenic syndromes due to compression of the contents in the foramina.
author	Karau Bundi,P Ogeng´o,J. A Hassanali,J Odula,P. O
author_facet	Karau Bundi,P Ogeng´o,J. A Hassanali,J Odula,P. O
author_sort	Karau Bundi,P
title	Morphometry and Variations of Bony Ponticles of the Atlas Vertebrae (C1) in Kenyans
title_short	Morphometry and Variations of Bony Ponticles of the Atlas Vertebrae (C1) in Kenyans
title_full	Morphometry and Variations of Bony Ponticles of the Atlas Vertebrae (C1) in Kenyans
title_fullStr	Morphometry and Variations of Bony Ponticles of the Atlas Vertebrae (C1) in Kenyans
title_full_unstemmed	Morphometry and Variations of Bony Ponticles of the Atlas Vertebrae (C1) in Kenyans
title_sort	morphometry and variations of bony ponticles of the atlas vertebrae (c1) in kenyans
publisher	Sociedad Chilena de Anatomía
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000400006
work_keys_str_mv	AT karaubundip morphometryandvariationsofbonyponticlesoftheatlasvertebraec1inkenyans AT ogengoja morphometryandvariationsofbonyponticlesoftheatlasvertebraec1inkenyans AT hassanalij morphometryandvariationsofbonyponticlesoftheatlasvertebraec1inkenyans AT odulapo morphometryandvariationsofbonyponticlesoftheatlasvertebraec1inkenyans
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Morphometry and Variations of Bony Ponticles of the Atlas Vertebrae (C1) in Kenyans

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