STUDY OF GREATER SCIATIC NOTCH FOR DETERMINATION OF SEX OF HIP BONE BY METRIC METHOD
Keywords:Hip, Bone, Index
Background: The distinctive morphology of human skeleton and its clear sexual dimorphism make it of interests from anatomical, forensic, obstetrical, radiological and anthropological point of view. The hip bone is considered as an ideal bone for sex determination as it provides the highest accuracy levels. Many workers have studied various metric parameters for sexing of hip bone.
Methods: The present study was done with an aim to find out the sex of hip bone using various parameters of greater sciatic notch. For this purpose, 100 dry hip bones were collected from the Department of Anatomy. Seven different parameters of the greater sciatic notch were used for the study: Maximum width, Maximum depth, Posterior segment, Index I, Index II, Total angle and Posterior angle.
Results: All the parameters (especially posterior segment, posterior angle and index II) were found to be highly indicative of sex hip bone by t- test (p<0.005) except the depth.
Conclusion: By the present study it was concluded that the width and depth of the greater sciatic notch were a less useful criteria for sexing purposes while the posterior angle was found to be the best parameter, which identified 75 % of left and 88 % of right male hip bones and 92 % of left and 100 % of right female bones. Length of the posterior segment and Index II also assigned sex to a high percentage of hip bones, specially to the female ones (95-97 %), these results suggests that the widening of the greater sciatic notch found in females has occurred mainly in its posterior part.
Keywords: Hip, Bone, Index
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