Morphometric Analysis of the Foramen Magnum

SUMMARY: The foramen magnum is morphometrically typified by two perpendicular diameters and a distinct margin. This important anatomical landmark is subject to high interindividual variation. The objective of this study was to evaluate the dimensions and morphology of the foramen magnum in a Jordani...

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Autores principales:	Samara,Osama A., Amarin,Justin Z., Badran,Darwish H., Al-Khayat,Omar W., Suradi,Haya H., Shatarat,Amjad T., Hadidi,Maher T.
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2017
Materias:	Foramen magnum Morphometry Sexual dimorphism Measurements Morphology
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000401270
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spelling	oai:scielo:S0717-950220170004012702019-09-16Morphometric Analysis of the Foramen MagnumSamara,Osama A.Amarin,Justin Z.Badran,Darwish H.Al-Khayat,Omar W.Suradi,Haya H.Shatarat,Amjad T.Hadidi,Maher T. Foramen magnum Morphometry Sexual dimorphism Measurements Morphology SUMMARY: The foramen magnum is morphometrically typified by two perpendicular diameters and a distinct margin. This important anatomical landmark is subject to high interindividual variation. The objective of this study was to evaluate the dimensions and morphology of the foramen magnum in a Jordanian population. In this retrospective study, 247 individuals were consecutively sampled using the institutional picture archiving and communication system. The anteroposterior and transverse diameters of the foramen magnum were measured; the foramen magnum index was calculated; and, the shape of the foramen magnum was visually assessed. The sex-pooled anteroposterior and transverse diameters were 35.1 ± 3.2 mm and 29.3 ± 2.5 mm, respectively. The sex-pooled foramen magnum index was 1.20 ± 0.10. The diameters were significantly different (P<0.001) and positively correlated (r=0.52, P<0.001). Participant age was negatively correlated with the anteroposterior (rs=-0.15, P=0.02) and transverse (rs=-0.14, P=0.03) diameters. After controlling for participant age, there was a statistically significant difference in the anteroposterior diameter (P<0.001), the transverse diameter (P<0.001), and the foramen magnum index (P=0.02) between sexes. The foramen magnum was most commonly irregular in shape (36 % of all cases). In contrast to previous studies, we report, for the first time, a negative correlation between age and the diameters of the foramen magnum. In addition, a predominance of irregularly shaped foramen magnum was found. The finding makes an already heterogenous group of published data even more variable, prompting reconsideration of the role of visual assessment in morphometric studies.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.35 n.4 20172017-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000401270en10.4067/S0717-95022017000401270
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Foramen magnum Morphometry Sexual dimorphism Measurements Morphology
spellingShingle	Foramen magnum Morphometry Sexual dimorphism Measurements Morphology Samara,Osama A. Amarin,Justin Z. Badran,Darwish H. Al-Khayat,Omar W. Suradi,Haya H. Shatarat,Amjad T. Hadidi,Maher T. Morphometric Analysis of the Foramen Magnum
description	SUMMARY: The foramen magnum is morphometrically typified by two perpendicular diameters and a distinct margin. This important anatomical landmark is subject to high interindividual variation. The objective of this study was to evaluate the dimensions and morphology of the foramen magnum in a Jordanian population. In this retrospective study, 247 individuals were consecutively sampled using the institutional picture archiving and communication system. The anteroposterior and transverse diameters of the foramen magnum were measured; the foramen magnum index was calculated; and, the shape of the foramen magnum was visually assessed. The sex-pooled anteroposterior and transverse diameters were 35.1 ± 3.2 mm and 29.3 ± 2.5 mm, respectively. The sex-pooled foramen magnum index was 1.20 ± 0.10. The diameters were significantly different (P<0.001) and positively correlated (r=0.52, P<0.001). Participant age was negatively correlated with the anteroposterior (rs=-0.15, P=0.02) and transverse (rs=-0.14, P=0.03) diameters. After controlling for participant age, there was a statistically significant difference in the anteroposterior diameter (P<0.001), the transverse diameter (P<0.001), and the foramen magnum index (P=0.02) between sexes. The foramen magnum was most commonly irregular in shape (36 % of all cases). In contrast to previous studies, we report, for the first time, a negative correlation between age and the diameters of the foramen magnum. In addition, a predominance of irregularly shaped foramen magnum was found. The finding makes an already heterogenous group of published data even more variable, prompting reconsideration of the role of visual assessment in morphometric studies.
author	Samara,Osama A. Amarin,Justin Z. Badran,Darwish H. Al-Khayat,Omar W. Suradi,Haya H. Shatarat,Amjad T. Hadidi,Maher T.
author_facet	Samara,Osama A. Amarin,Justin Z. Badran,Darwish H. Al-Khayat,Omar W. Suradi,Haya H. Shatarat,Amjad T. Hadidi,Maher T.
author_sort	Samara,Osama A.
title	Morphometric Analysis of the Foramen Magnum
title_short	Morphometric Analysis of the Foramen Magnum
title_full	Morphometric Analysis of the Foramen Magnum
title_fullStr	Morphometric Analysis of the Foramen Magnum
title_full_unstemmed	Morphometric Analysis of the Foramen Magnum
title_sort	morphometric analysis of the foramen magnum
publisher	Sociedad Chilena de Anatomía
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000401270
work_keys_str_mv	AT samaraosamaa morphometricanalysisoftheforamenmagnum AT amarinjustinz morphometricanalysisoftheforamenmagnum AT badrandarwishh morphometricanalysisoftheforamenmagnum AT alkhayatomarw morphometricanalysisoftheforamenmagnum AT suradihayah morphometricanalysisoftheforamenmagnum AT shataratamjadt morphometricanalysisoftheforamenmagnum AT hadidimahert morphometricanalysisoftheforamenmagnum
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Morphometric Analysis of the Foramen Magnum

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