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International Journal of Morphology

versión On-line ISSN 0717-9502

Resumen

CHAIJAROONKHANARAK, Wunnee et al. Classification and Incidence of Pterion Patterns of Thai Skulls. Int. J. Morphol. [online]. 2017, vol.35, n.4, pp.1239-1242. ISSN 0717-9502.  http://dx.doi.org/10.4067/S0717-95022017000401239.

The pterion, a landmark for neurosurgery, is the weakest part of the skull owing to relatively thin bone. Variant patterns of pterion can confuse the clinicians during diagnosis of the lateral skull fractures in emergency situations. Thedifferent pterion types of many races have been reported but not of Thais. In this study; therefore, we investigated the incidence of sutural pterion patterns on of Thai skulls. The infratemporal fossa of 110 sides from 55 dried skulls identified as Thais were observed and classified for individual pterion types. The results showed that the pterion patterns can be classified into 4 types; spheno-parietal (87.27 %), fronto-temporal (4.55 %), uni-epipteric (6.36 %), and multi-epipteric (1.82 %) types. It was found that the spheno-parietal type was dominant in males (61.81 %) than in females (25.45 %). The majority of the skulls showed bilateral symmetry (85.45 %) in all types and the unilateral ones were far less (14.55 %). In bilateral pterion incidence, the spheno-parietal type was approximately 93.61 % while the uni-epipteric type was not found. Moreover, the bilateral multi-epipteric type was found only in one female skull (2.13 %). These findings will be useful for the radiologists and the neurosurgeons concerning lateral skull fractures in emergency diagnosis.

Palabras clave : Pterion; Spheno-parietal type; Fronto-temporal type; Uni-epipteric type; Multi-epipteric type.

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