The Localization of the Asterion According to the Anatomical Landmarks of Posterior Cranial Fossa in Newborns: Clinical Implications

The purpose of this study was to determine the localization of the asterion according to the anatomical landmarks of posterior cranial fossa and its relation with sinuses for posterolateral surgical approaches in newborns. On 70 head-halves, a needle about 2 mm with diameter was placed on the centre...

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Autores principales:	Demir,Mehmet T, Kopuz,Cem, Pirzirenli,Mennan Ece Aydin, Çelik,Fahrettin, Çorumlu,Ufuk
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2015
Materias:	Asterion Sigmoid sinus Transverse sinus Retrosigmoidal approach Anatomy Newborn Posterior cranial fossa
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000200043
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spelling	oai:scielo:S0717-950220150002000432015-08-13The Localization of the Asterion According to the Anatomical Landmarks of Posterior Cranial Fossa in Newborns: Clinical ImplicationsDemir,Mehmet TKopuz,CemPirzirenli,Mennan Ece AydinÇelik,FahrettinÇorumlu,Ufuk Asterion Sigmoid sinus Transverse sinus Retrosigmoidal approach Anatomy Newborn Posterior cranial fossa The purpose of this study was to determine the localization of the asterion according to the anatomical landmarks of posterior cranial fossa and its relation with sinuses for posterolateral surgical approaches in newborns. On 70 head-halves, a needle about 2 mm with diameter was placed on the centre point of asterion (posterolateral fontanel) by inserting into the whole cranial bony tissue by forming an right angle with the bony surface. Various localizations of asterion and its measurements from the internal and external anatomical landmarks were investigated on term neonatal cadavers. The localization of asterion was found as on the sigmoid-transverse sinus junction (STJ) (5., 6., 7., 8. squares) in 40% of cases on right side and in 34%, on left side. Additionally, it was located below the STJ (9., 10., 11., 12. squares) in 60% of cases, on right side and in 63% of cases on left side. We determined that the most frequent localization of asterion as the 11. square both for the right and left sides 12 (34%) cases for the right side and 11 (31,4%) cases for the left side. The asterion was not located on 1., 2., 3., 4., 5. and 12. squares on right side and 1., 3., 4., 8. and 9. squares on left side. It has been found that the region of asterion has an average distance value of 19.9 mm to internal acoustic meatus (MI), 31.7 mm to posterior clinoid process (PC), 34.4 to dorsum sellae (DS), 19.2 mm to jugular foramen (FJ), 23.0 mm to hypoglossal canal (HC), internally. The distance of asterion as 28.8 mm to zygoma root (ZR) and 22.3 mm to Henle's spine (HS) and 15.8 mm to mastoid tip (MT) and 35.9 mm to external occipital protuberance (PE) were observed. By the guide of point asterion on newborns the area of 1cm2 on this point which was placed on superior 4 squares of our scale diagram is suggested as a safe area of placement of first burr hole to avoid from the risk of bleeding of sigmoid and transverse sinuses on craniotomies of posterior fossa.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.33 n.2 20152015-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000200043en10.4067/S0717-95022015000200043
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Asterion Sigmoid sinus Transverse sinus Retrosigmoidal approach Anatomy Newborn Posterior cranial fossa
spellingShingle	Asterion Sigmoid sinus Transverse sinus Retrosigmoidal approach Anatomy Newborn Posterior cranial fossa Demir,Mehmet T Kopuz,Cem Pirzirenli,Mennan Ece Aydin Çelik,Fahrettin Çorumlu,Ufuk The Localization of the Asterion According to the Anatomical Landmarks of Posterior Cranial Fossa in Newborns: Clinical Implications
description	The purpose of this study was to determine the localization of the asterion according to the anatomical landmarks of posterior cranial fossa and its relation with sinuses for posterolateral surgical approaches in newborns. On 70 head-halves, a needle about 2 mm with diameter was placed on the centre point of asterion (posterolateral fontanel) by inserting into the whole cranial bony tissue by forming an right angle with the bony surface. Various localizations of asterion and its measurements from the internal and external anatomical landmarks were investigated on term neonatal cadavers. The localization of asterion was found as on the sigmoid-transverse sinus junction (STJ) (5., 6., 7., 8. squares) in 40% of cases on right side and in 34%, on left side. Additionally, it was located below the STJ (9., 10., 11., 12. squares) in 60% of cases, on right side and in 63% of cases on left side. We determined that the most frequent localization of asterion as the 11. square both for the right and left sides 12 (34%) cases for the right side and 11 (31,4%) cases for the left side. The asterion was not located on 1., 2., 3., 4., 5. and 12. squares on right side and 1., 3., 4., 8. and 9. squares on left side. It has been found that the region of asterion has an average distance value of 19.9 mm to internal acoustic meatus (MI), 31.7 mm to posterior clinoid process (PC), 34.4 to dorsum sellae (DS), 19.2 mm to jugular foramen (FJ), 23.0 mm to hypoglossal canal (HC), internally. The distance of asterion as 28.8 mm to zygoma root (ZR) and 22.3 mm to Henle's spine (HS) and 15.8 mm to mastoid tip (MT) and 35.9 mm to external occipital protuberance (PE) were observed. By the guide of point asterion on newborns the area of 1cm2 on this point which was placed on superior 4 squares of our scale diagram is suggested as a safe area of placement of first burr hole to avoid from the risk of bleeding of sigmoid and transverse sinuses on craniotomies of posterior fossa.
author	Demir,Mehmet T Kopuz,Cem Pirzirenli,Mennan Ece Aydin Çelik,Fahrettin Çorumlu,Ufuk
author_facet	Demir,Mehmet T Kopuz,Cem Pirzirenli,Mennan Ece Aydin Çelik,Fahrettin Çorumlu,Ufuk
author_sort	Demir,Mehmet T
title	The Localization of the Asterion According to the Anatomical Landmarks of Posterior Cranial Fossa in Newborns: Clinical Implications
title_short	The Localization of the Asterion According to the Anatomical Landmarks of Posterior Cranial Fossa in Newborns: Clinical Implications
title_full	The Localization of the Asterion According to the Anatomical Landmarks of Posterior Cranial Fossa in Newborns: Clinical Implications
title_fullStr	The Localization of the Asterion According to the Anatomical Landmarks of Posterior Cranial Fossa in Newborns: Clinical Implications
title_full_unstemmed	The Localization of the Asterion According to the Anatomical Landmarks of Posterior Cranial Fossa in Newborns: Clinical Implications
title_sort	localization of the asterion according to the anatomical landmarks of posterior cranial fossa in newborns: clinical implications
publisher	Sociedad Chilena de Anatomía
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000200043
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The Localization of the Asterion According to the Anatomical Landmarks of Posterior Cranial Fossa in Newborns: Clinical Implications

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