プテリオン
WordNet
- the craniometric point in the region of the sphenoid fontanelle
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2013/03/17 22:49:08」(JST)
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Pterion |
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Side view of head, showing surface relations of bones. (Pterion labeled at center.) |
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Side view of the skull. (Pterion visible but not labeled. Arrow points to sphenoparietal suture, and pterion is slightly to the right of the tip of arrow.) |
Latin |
Pterion |
Gray's |
subject #46 182 |
The pterion is the point corresponding with the posterior end of the sphenoparietal suture.
Contents
- 1 Location
- 2 Clinical significance
- 3 Etymology
- 4 References
- 5 External links
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Location
It is situated about 3 cm. behind, and a little above the level of the zygomatic process of the temporal bone.
It marks the junction between four bones:
- the parietal bone
- the squamous part of temporal bone
- the greater wing of sphenoid bone
- the frontal bone
Clinical significance
The pterion is known as the weakest part of the skull.
In the clinical setting, the pterion is relevant because the anterior division of the middle meningeal artery runs beneath it, on the inner side of the skull, which is quite thin at this point. [1]
A blow to the pterion (e.g., in boxing) may rupture the artery causing an epidural haematoma. The pterion may also be fractured indirectly. Blows to the top or back of the head may not cause fracture at the site of impact, but may place sufficient force on the skull that its weakest part, the pterion, will fracture.
Etymology
The pterion receives its name from the Greek root pteron, meaning wing.
In Greek mythology, Hermes, messenger of the gods, was enabled to fly by winged sandals, and wings on his head, which were attached at the pterion.
References
- ^ Weston, Gabriel (22 August 2011). "Mapping the Body: The Temple". The Guardian. http://www.guardian.co.uk/lifeandstyle/2011/aug/22/mapping-the-body-the-temple. Retrieved 4 February 2012, 4 April 2012.
External links
- Diagram at shoshinryu.com
- SUNY Figs 22:01-04
- Diagram - look for #24 (source here)
- Pterion at eMedicine Dictionary
This article incorporates text from a public domain edition of Gray's Anatomy.
Bones of head and neck: compound structures of skull (TA A02.1.00.002–052, GA 2.178–199)
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Neurocranium |
- Asterion
- Pterion
- Stephanion
- Bregma
- Lambda
- Fossae: anterior cranial fossa
- middle cranial fossa
- posterior cranial fossa
- cranial cavity
- Fontanelles: 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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anat (c/f/k/f, u, t/p, l)/phys/devp/cell
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noco/cong/tumr, sysi/epon, injr
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English Journal
- Reappraising the surface anatomy of the pterion and its relationship to the middle meningeal artery.
- Ma S, Baillie LJ, Stringer MD.SourceDepartment of Anatomy, Otago School of Medical Sciences, University of Otago, Dunedin, New Zealand.
- Clinical anatomy (New York, N.Y.).Clin Anat.2012 Apr;25(3):330-9. doi: 10.1002/ca.21232. Epub 2011 Jul 28.
- Despite its clinical importance, the surface anatomy of the pterion is inconsistently reported. This study reappraises the surface marking of the pterion and its relationship to the middle meningeal artery (MMA). The position and morphology of the pterion were analyzed in the Frankfurt plane in 76 a
- PMID 21800374
- [Clinical and ossification outcome of custom-made hydroxyapatite prothese for large skull defect].
- Hardy H, Tollard E, Derrey S, Delcampe P, Péron JM, Fréger P, Proust F.SourceService de chirurgie maxillo-faciale, CHRU de Rouen, 1, rue de Germont, 76031 Rouen cedex, France.
- Neuro-Chirurgie.Neurochirurgie.2012 Feb;58(1):25-9. Epub 2011 Oct 24.
- OBJECTIVE: Cranioplasty is an everyday concern in neurosurgery, especially in decompressive craniectomy cases. Our surgical team uses custom-made hydroxyapatite implants for large and/or complex defects.PATIENTS AND METHOD: Eight patients had a custom-made prosthesis. Each of them has been reviewed
- PMID 22030170
Japanese Journal
- 前頭側頭開頭におけるPterion Plateの有用性
Related Links
- (Pterion visible but not labeled. Arrow points to sphenoparietal suture, and pterion is slightly to the right of the tip of arrow.) Gray's · subject #46 182. The pterion is the point corresponding with the posterior end of the sphenoparietal suture.
- イニオンは後頭骨の左右の上項線が正中矢状面上で合する点。外後頭隆起に一致する 。 Pterion(プテリオン)Pterion ぷてりおん [TA: A02.1.00.019]. 前頭骨、側頭骨、頭頂 骨及び蝶形骨大翼のH字形の縫合線の集合。眼窩の外角突起の約3cm後方に当たる。
Related Pictures
★リンクテーブル★
[★]
- 英
- pterion
- 同
- テリオン、蝶形・頭頂・側頭骨接合部
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