大泉門
WordNet
- of or near the head end or toward the front plane of a body
- earlier in time (同)prior
- any membranous gap between the bones of the cranium in an infant or fetus (同)fontanel, soft_spot
PrepTutorEJDIC
- (場所などが)前の,前部の;(…より)前に位置する《+『to』+『名』》 / (時・事件などが)以前の,先の;(…より)前の《+『to』+『名』》
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2016/12/15 01:52:08」(JST)
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Anterior fontanelle |
Skull at birth, showing frontal and occipital fonticuli.
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Human anterior fontanelle 1 month
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Details |
Identifiers |
Latin |
fonticulus anterior |
TA |
A02.1.00.028 |
FMA |
75439 |
Anatomical terminology
[edit on Wikidata]
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The anterior fontanelle (bregmatic fontanelle, frontal fontanelle) is the largest fontanelle, and is placed at the junction of the sagittal suture, coronal suture, and frontal suture; it is lozenge-shaped, and measures about 4 cm in its antero-posterior and 2.5 cm in its transverse diameter. The fontanelle allows the skull to deform during birth to ease its passage through the birth canal and for expansion of the brain after birth.
While the posterior and lateral fontanelles are obliterated by about six months after birth, the anterior is not completely closed until about the middle of the second year. Full ossification starts in the late twenties and finishes before the age of 50 .
Contents
- 1 Clinical significance
- 2 Additional Images
- 3 See also
- 4 External links
Clinical significance
The anterior fontanelle is useful clinically. Examination of an infant includes palpating the anterior fontanelle. A sunken fontanelle indicates dehydration, whereas a very tense or bulging anterior fontanelle indicates raised intracranial pressure. However, this is not a certain indicator for raised pressure as prolonged crying by the baby may produce the same effect. A full anterior fontanelle may also be indicative of neonatal meningitis, specifically acute bacterial meningitis.
Additional Images
-
Skull of newborn. Anterior view.
See also
External links
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Wikimedia Commons has media related to Anterior fontanelle. |
- -556793806 at GPnotebook
- Anatomy image: skel/fetal2 at Human Anatomy Lecture (Biology 129), Pennsylvania State University
Compound structures of skull
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Neurocranium |
- Calvaria
- Asterion
- Pterion
- Stephanion
- Inion
- Bregma
- Lambda
- Fossae
- anterior
- middle
- posterior
- cranial cavity
- Base of skull
- Fontanelle
- anterior
- posterior
- sphenoidal
- mastoid
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Facial skeleton |
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Both |
- dacryon
- zygomatic arch
- temporal fossa
- infratemporal fossa
- pterygomaxillary fissure
- pterygopalatine fossa
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UpToDate Contents
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English Journal
- The gut or the brain?-gastrointestinal misdiagnoses of infantile brain tumors.
- Teo WY1, Myseros JS.
- Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery.Childs Nerv Syst.2014 Aug;30(8):1449-53. doi: 10.1007/s00381-014-2386-7. Epub 2014 Feb 18.
- PURPOSE: Central nervous system tumors account for the largest number of cancer deaths in childhood. Brain tumors in infants less than 3 years of age are rare; symptoms and signs are often non-specific. Patent anterior fontanelles/unfused cranial sutures in infants can accommodate rising intracrani
- PMID 24535228
- Predictors of the need for cerebrospinal fluid diversion in patients with myelomeningocele.
- Phillips BC1, Gelsomino M, Pownall AL, Ocal E, Spencer HJ, O'Brien MS, Albert GW.
- Journal of neurosurgery. Pediatrics.J Neurosurg Pediatr.2014 Aug;14(2):167-72. doi: 10.3171/2014.4.PEDS13470. Epub 2014 May 30.
- Object Many patients with myelomeningocele (MMC) develop hydrocephalus, and most will undergo CSF diversion. The goal of this retrospective study was to determine whether there was a change in the shunt rate over the 7 consecutive years of the study. The authors will also identify the criteria used
- PMID 24877604
- Atypical Goldenhar syndrome presenting with an additional cranial bone.
- Sotiriadis A1, Diamanti E, Chatzinikolaou F.
- Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.Ultrasound Obstet Gynecol.2014 Jul 17. doi: 10.1002/uog.14635. [Epub ahead of print]
- A cranial gap was detected in the left frontal area of a 24-week fetus. Reconstruction of the frontal bones and metopic suture using 3D ultrasound revealed the presence of an additional xiphoid bone extending from the anterior fontanelle to the nasal region between the frontal bones, without other m
- PMID 25042723
Japanese Journal
- 大泉門がウォーム骨により置換されていた Hemifacial microsomia の1例
- 柳下 幹男,土井 悠人,山下 昌信,川上 重彦
- 日本頭蓋顎顔面外科学会誌 = Journal of the Japan Society of Cranio-Maxillo-Facial Surgery 27(4), 327-333, 2011-12-25
- NAID 10030389870
- 中谷 浩子,吉岡 伸高,小川 晴生,平本 道昭
- 日本頭蓋顎顔面外科学会誌 = Journal of the Japan Society of Cranio-Maxillo-Facial Surgery 24(1), 47-52, 2008-03-25
- NAID 10021290718
- Congenital Dermoid Cyst of the Anterior Fontanelle in Turkish Children : Four Case Reports
- ASLAN Ozcan,OZVEREN Faik,KOTIL Kadir,OZDEMIR Bulent,KUSCUOGLU Ufuk,BILGE Turgay
- Neurologia medico-chirurgica 44(3), 150-152, 2004-03-15
- … Four cases of congenital inclusion dermoid cysts located over the anterior fontanelle occurred in male Turkish children aged 6 months to 5 years. … These rare cysts presented as slow-growing soft masses over the anterior fontanelle. …
- NAID 110002283492
Related Links
- The diagnosis of an abnormal fontanel requires an understanding of the wide variation of normal. At birth, an infant has six fontanels. The anterior fontanel is the largest and most important for clinical evaluation. The ...
- anterior fontanelle 大泉門 【略】AF - アルクがお届けする進化するオンライン英和・和英辞書データベース。一般的な単語や連語から、イディオム、専門用語、スラングまで幅広く収録。
Related Pictures
★リンクテーブル★
[★]
- 英
- anterior fontanelle (KA), anterior fontanel (HT), bregmatic fontanel
- 同
- 前泉門
- ラ
- fonticulus anterior
- 関
- ブレグマ、小泉門
- 閉鎖時期:2歳、1歳半(SPE.50) ← 文献によってまちまち。
- 大泉門は菱形のような形をしているが、大泉門径は交叉しあう2片の長さの和を2で除したものである。(QB.O-73)
臨床関連
[★]
- 関
- anterioris、anteriorly、before、fore、former、pre、prior