Morphometric Study of The Greater Sciatic Notch for Sex Determination: A Radiological Study

The unique structure of the human skeleton and its obvious differences between sexes render it significant from anatomical, forensic, obstetric, radiological, and anthropological perspectives. The hip bone, being comparatively vigorous, is safe to harm and one of the most protected skeletons of the human skeleton. It additionally broadly constitutes the greater sciatic notch, which holds the most prominent degree of sexual dimorphism. The present study was carried out in the radiology department to assess the morphometry of the greater sciatic notch by utilising abdominopelvic CT scan film of the patients residing in the upper western region of Nepal. Various metric parameters of the greater sciatic notch were calculated, including breadth, depth and posterior segment breadth and indices I & II. A total of 138 adults were recruited as subjects for this study, including 64 males and 74 females. The study revealed that the width of GSN is wider in females when compared to males, with a p-value<0.001. The depth of GSN was greater in females on the right side, but no significant difference on the left side (p=0.156). Right index II (P 0.000) was comparatively significant in females than in males, but left index II was not found to be significant. The metric method utilising 3D-CT scan will be beneficial in determining the gender in a partially decomposed, semi-fleshed and charred body recovered from a mass disaster.