Landmarks for Keyhole Neurosurgical Procedures through Pterion
نویسندگان
چکیده
Background: Pterion is a very crucial landmark. Thus, the present study was conducted to study pterion from morphometric as well as surgical point of view and its relation with underlying brain structures. Material and methods: The current study was conducted on 46 pterion in dry, adult human skulls and 20 in cadaveric skulls. Various types of pterion and their distance from other landmarks were determined. Parameters measured on dry skulls included distance from center of pterion to middle of zygomatic arch, fronto-zygomatic suture, temporo-zygomatic suture and external auditory meatus, respectively. In cadaveric skulls, relation of these parameters with underlying brain structures was observed. Observations: Incidence of different types of pterions was found to be 60.83% sphenoparietal; 23.8% epipteric; 12.17% stellate and 3.2% frontotemporal. Distance from center of pterion to middle of zygomatic arch was significantly high in stellate variety of pterion. Distance from center of pterion to middle of frontozygomatic suture was seen corresponding with inferior border of frontal lobe. Conclusions: This information can be useful for keyhole surgeries in and around pterion and can be useful for selection of appropriate site of craniotomy for approaching deeper structures of brain.
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