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  • noun

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the craniometric point in the region of the sphenoid fontanelle

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We found that the pterion patterns of Thai skulls could be classified into 4 different types as shown in Figures 1.
In addition, symmetry in the types of pterion was detected in 47 (31 males and 16 females) specimens (Table II).
The pterion is used as an important anatomical landmark for many regions of the brain with respect to neurosurgery.
A pterion keyhole approach for the treatment of anterior circulation aneurysms.
Two bur holes were drilled on the key point (frontozygomatic process) and the pterion point.
Various neuro surgical interventions like Pterion approach with post-operative stereo tactic radiotherapy may lead to rescue of the patient.
One or more pterion ossicles or epipteric bones may appear between the sphenoidal angle of the parietal and the greater wing of the sphenoid (2,7,8).
This was also scored as PNBr and PNBl for right and left sides respectively Pterion ossicle A sutural bone (epipteric bone) (PO) inserted between the anterior inferior angle of the parietal bone and the greater wing of the sphenoid.
The interfascial approach to the pterion gives the surgeon better access to this area than does muscle-splitting incision (31).
The pterion is an irregular H shaped sutural confluence in the temporal fossa of the skull formed by the frontal, parietal, sphenoid and temporal squama (Williams et al.
The anatomic location of the pterion therefore is important in surgical interventions following extradural haemorrhage as well as tumors involving inferior aspects of the frontal lobe, such as olfactory meningiomas (Spektor et al.
INTRODUCTION: Pterion is a significant region which is marked by the junction of frontal bone, parietal bone, squama temporalis and the greater wing of sphenoid bone and forms the floor of temporal fossa.
The pterion corresponds to the site of anterolateral fontanelle of neonatal skull which closes in the third month after birth (2).