The Morphologicalanalysis of Pterion in North Indian Population

Abstract

Pterion is defined as an H-shaped small circular area formed by the junction of four bones: Frontal, Parietal, Temporal and Sphenoid on Norma lateralis of the skull. A 35 dry adult human skulls of unknown sex without any gross pathology or abnormalitywere taken for the study. Sphenoparietal was the commonest type of pterion observed on both the sides. Second most common type of pterion found in our study was stellate type. Stellate type of pterion was present only on right side of skull. The accomplishments of this study contribute to anatomical variations of the pterion, which are of interest to anthropologists, forensic pathologists and surgeons. This topic of study deserves further investigation in other populations from different geographical areas.

Analysis of the Variations in the Morphology, Topography of the Pterion, and Their Implications in Neurosurgery: An Osteometric Study

“…Presently, we reported SP type of pterion in 89% of the skulls, making this the most common variety in our study population and relatively higher than the Nigerian, Kenyan, and Thai populations. 16 17 19 Interestingly, we reported all four varieties of pterion, contrary to the absence of FT, 3 E, 3 9 17 and S 15 19 types in a few populations. In the Thai population, the E type was further classified into the uniepipteric and multiepipteric on the basis of the number of interposing bones within the pterion, among which the uniepipteric was reported more frequently.…”

“…1 2 Being covered superficially by scalp and the origin of the temporalis muscle with temporalis fascia, it is neither visible nor palpable from the surface. 3 The pterion serves as an important anatomical, surgical landmark, and craniometric point. Usually, the center of the pterion is approximately present 3.5 cm behind and 1.5 cm above the frontozygomatic suture.…”

A Morphological Study On Shapes Of Pterion And Its Clinical Importance.

“…Cosmetically also, the pterional approach is favoured for its skin incision being behind the hairline, appropriate size bone flap, and the osteoplastic craniotomy preventing some of the postoperative temporalis atrophy. In the absence of neuronavigational devices to achieve optimum craniotomy, neurosurgeons have to rely on anatomical knowledge of variations in the pterion and the external landmarks around it [2,3,4,5]. Although suboptimal pterion localisation may compromise surgical access and therefore treatment outcome, studies focusing on pterion morphology and surgical anatomy are scarce.…”