Anatomical Variability of the Frontal Bone Supraorbital Margin of the Ryazan Region Residents

Abstract

For description of individual variability of the frontal bone supraorbital margin the craniometric study of the Ryazan region inhabitants’ skulls was conducted. Using digital photometry method the determination of quantitative characteristics and the spatial position of the supraorbital margin relatively to standard parameters of the orbit was performed. Some indicators of the orbit sizes have been studied. The classification, reflecting the degree of supraorbital margin’s arc curvature, has been developed, based on curvature coefficient (CC), suggested by the authors. Three Options for the spatial arrangement of frontal bone’s supraorbital margin were identified, according to CC: less than 30 - a slightly curved arc; 30-45 - moderate curved and more than 45 - strongly curved. Reliable moderate force correlation between values of the CC and the superior face index has been determined.