Study of variations of bony pattern and presence of wormian bone at pterion in dry human skulls

Pterion is an important bony landmark of skull present on norma larteralis. Variations of bony pattern at pterion are common and are of clinical importance. Present study was carried out in Department of Anatomy IIMS and R to find out variations at pterion in dry human skull of north Indian origin. We utilized 60 dry human skulls for the study. The pattern of pterion and presence of sutural was observed. Spheno parietal was the commonest type of pterion in both left (86.7%) and right (91.7%) side of skull, stellate type was found in (5%) of skulls and frontotemporal was found in 3.3% of left and right each. Sutural bone was present in 5% skulls on the left side. Variation in pattern of pterion and presence of sutural bones are important from surgical and radiological point of view.