Interparietal Bone Variations in Accordance with their Ossification Centres in Human Skulls

The upper interparietal segment of the squamous part of the occipital bone develops in membrane and the lower supraoccipital part develops in cartilage. According to the available literature, the interparietal segment is ossified from 2 to 3 pairs of ossification centres and each of these centres ha...

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Autores principales:	Khan,Aaijaz Ahmed, Ullah,Muzammil, Asari,Mohd. Asnizam, Hassan,Asma
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2013
Materias:	Centre Interparietal Occipital bone Ossification Skull
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000200031
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spelling	oai:scielo:S0717-950220130002000312014-09-09Interparietal Bone Variations in Accordance with their Ossification Centres in Human SkullsKhan,Aaijaz AhmedUllah,MuzammilAsari,Mohd. AsnizamHassan,Asma Centre Interparietal Occipital bone Ossification Skull The upper interparietal segment of the squamous part of the occipital bone develops in membrane and the lower supraoccipital part develops in cartilage. According to the available literature, the interparietal segment is ossified from 2 to 3 pairs of ossification centres and each of these centres has 2 nuclei. Interparietal bone is formed due to failure of fusion of these centres and/or their nuclei with each other. Many variations of interparietal bone have been reported by many investigators. In the present study, out of 25 human skulls studied, six skulls had some interesting variations of interparietal bones. Four interparietal bones were found in one skull, 2 interparietal bones were observed in another skull and the remaining four skulls had a single interparietal (Os inca) bone at the lambda. In addition to interparietal bones, some sutural bones were also observed in three skulls. These variations were in accordance with the ossification centres of the membranous part of the occipital bone. By their location and shape it was concluded that they were formed due to failure of fusion of nuclei of the third pair centres of ossification with each other, with opposite fellow and with the second pair centers. It was further concluded that these cases of interparietal bones were different from what had been reported earlier by other researchers and this prompted the present report that may be found useful for anatomists, anthropologists, radiologists and neurosurgeons.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.31 n.2 20132013-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000200031en10.4067/S0717-95022013000200031
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Centre Interparietal Occipital bone Ossification Skull
spellingShingle	Centre Interparietal Occipital bone Ossification Skull Khan,Aaijaz Ahmed Ullah,Muzammil Asari,Mohd. Asnizam Hassan,Asma Interparietal Bone Variations in Accordance with their Ossification Centres in Human Skulls
description	The upper interparietal segment of the squamous part of the occipital bone develops in membrane and the lower supraoccipital part develops in cartilage. According to the available literature, the interparietal segment is ossified from 2 to 3 pairs of ossification centres and each of these centres has 2 nuclei. Interparietal bone is formed due to failure of fusion of these centres and/or their nuclei with each other. Many variations of interparietal bone have been reported by many investigators. In the present study, out of 25 human skulls studied, six skulls had some interesting variations of interparietal bones. Four interparietal bones were found in one skull, 2 interparietal bones were observed in another skull and the remaining four skulls had a single interparietal (Os inca) bone at the lambda. In addition to interparietal bones, some sutural bones were also observed in three skulls. These variations were in accordance with the ossification centres of the membranous part of the occipital bone. By their location and shape it was concluded that they were formed due to failure of fusion of nuclei of the third pair centres of ossification with each other, with opposite fellow and with the second pair centers. It was further concluded that these cases of interparietal bones were different from what had been reported earlier by other researchers and this prompted the present report that may be found useful for anatomists, anthropologists, radiologists and neurosurgeons.
author	Khan,Aaijaz Ahmed Ullah,Muzammil Asari,Mohd. Asnizam Hassan,Asma
author_facet	Khan,Aaijaz Ahmed Ullah,Muzammil Asari,Mohd. Asnizam Hassan,Asma
author_sort	Khan,Aaijaz Ahmed
title	Interparietal Bone Variations in Accordance with their Ossification Centres in Human Skulls
title_short	Interparietal Bone Variations in Accordance with their Ossification Centres in Human Skulls
title_full	Interparietal Bone Variations in Accordance with their Ossification Centres in Human Skulls
title_fullStr	Interparietal Bone Variations in Accordance with their Ossification Centres in Human Skulls
title_full_unstemmed	Interparietal Bone Variations in Accordance with their Ossification Centres in Human Skulls
title_sort	interparietal bone variations in accordance with their ossification centres in human skulls
publisher	Sociedad Chilena de Anatomía
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000200031
work_keys_str_mv	AT khanaaijazahmed interparietalbonevariationsinaccordancewiththeirossificationcentresinhumanskulls AT ullahmuzammil interparietalbonevariationsinaccordancewiththeirossificationcentresinhumanskulls AT asarimohdasnizam interparietalbonevariationsinaccordancewiththeirossificationcentresinhumanskulls AT hassanasma interparietalbonevariationsinaccordancewiththeirossificationcentresinhumanskulls
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Interparietal Bone Variations in Accordance with their Ossification Centres in Human Skulls

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