pterion


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Related to pterion: asterion

pterion

(ˈtɛrɪˌɒn)
n, pl -teria (-ˈtɪərɪə)
(Anatomy) anatomy the point on the side of the skull where the frontal, parietal, and squamosal bones meet the wing of the sphenoid
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Noun1.pterion - the craniometric point in the region of the sphenoid fontanelle
craniometric point - a landmark on the skull from which craniometric measurements can be taken
References in periodicals archive ?
Well-known examples of craniometric points used, included the pterion, asterion, vertex of the skull, the lambda stephanion glabella and the opisthion.
In general, the pterion in lateral aspect of the human skull is usually an irregular H shaped suture.
Incise the temporal muscle along the direction of the muscle fibers through pterion and expand it with the mastoid expander after separation.
Curved skin incision, about 5 cm, was made around the pterion and followed the lateral hairline curvature.
With the scissors, penetrating deep to the bone in the region of pterion a cut is made in the bones along the line of skin incision as the foetal bones are thin and membranous in character.
Tambien son aspectos tecnicos importantes: el Asterion (confluencia de la suturas lambdoidea, occipitomastoidea y suturas escamosas, indica la zona de transicion entre los senos transverso y sigmoideo), el ojo de la cerradura (identifica el pterion e indica la ubicacion de los lobulos frontal, temporal y orbital cavidades), el inion, la glabela, y la linea media (delinea el curso del seno sagital superior).
As such, a pterional craniotomy (named after the area of the skull that is being operated on rather than the area of the underlying brain, in this patient this being the pterion region of the skull--Figure 4) was performed whereby the skull is opened to remove the tumour.
Midlamdoidea 2; lamda 2; obelion 2; sagital anterior 2; bregma 2; midcoronal 2, pterion 3; esfenofrontal 3; esfetemporal inferior; esfenotemporal superior 2.
Physical examination revealed that approximately 2 cm of the nail (the flathead end) protruded from the right temporal area just posterior to the pterion.
On the modified AP, the pterion, sphenofrontal and superior sphenotemporal sutures were clearly separated, projecting out from the skull.
The third side linked the Pterion to the Asterion, and the forth side linked the Asterion to the point Lambda thus forming a "tridimensional tetragon".
Yasargil and Fox [sup][4] further modified the frontal, lateral pterion approach of Dandy by drilling at the sphenoidal ridge in 1975.