Morphometric analysis of the foramen magnum in sex estimation: An additional 3DCT study from Nepal on a larger sample

Abstract

Background Estimation of sex of the skeletal remains plays a vital part in the identification of an individual. This study is focused on the morphometric measurements of the foramen magnum region and examining the accuracy of sexual dimorphism in the Nepalese population. Methods Measurements were obtained from 3D computed tomography (CT) scan of 261 Nepalese adult cranial bases with known age and sex. Length and breadth of the foramen magnum, length and breadth of right and left occipital condyles and maximum and minimum intercondylar distance were measured on the base of the skull CT images. Results The mean values for all parameters were higher in males than females except for the maximum intercondylar distance. Sex prediction done with discriminant function analysis could classify the skull with an overall accuracy of 70.5%–71%. Conclusions It can be concluded from the results that the morphometric study of the foramen magnum is less reliable for sex estimation in the Nepalese population.

Determination of Sexual Dimorphism from Foramen Magnum in an Eastern Indian Population

“…which was lower than the present study. In the study conducted in Nepal (2022), mean value of APD of males was 3.48 cm and of females was 3.22 cm and the accuracy of APD was 63.2% which was much lower than the accuracy obtained in present study, mean value of TD of males was 3.01 cm and of females was 2.78 cm and accuracy of TD was 67.3% which was greater than the13 …”