Morphometric study of sexual dimorphism in adult sacra of south indian population

Authors:Jyothinath Kothapalli , Subhadra Devi Velichety b, Varalakshmi Desai , M. Roshan Zameerd
Int J Biol Med Res. 2012; 3(3): 2076-2081  |  PDF File

Abstract

Sex determination is the first step in the development of a biological profile in human osteology as methods to estimate other components of the profile depend on sex. In the present study certain morphometric parameters of sacrum viz Maximum length of sacrum, Maximum breadth (width) of sacrum, Mid-ventral curved length, Transverse diameter of the first sacral body, Antero-posterior diameter of the body of first sacral body, Length of ala, Maximum length of auricular surface were measured and indices viz Sacral index, Curvature index, Corporo-basal index, Alar index, Index of body of S1, Auricular index were calculated and statistically analyzed. Among the measurements recorded the parameters of Maximum breadth (width) of sacrum, Mid-ventral curved length, Antero-posterior diameter of the body of first sacral body, Length of ala, sacral index, alar index, were found to be statistically significant. Among these parameters the width of sacrum, curved length of sacrum were reliable for sex differentiation. It was also noted that no single parameter could identify 100% sex of the bones. Therefore, it can be concluded that for determination of sex of sacrum, maximum number of parameters should be taken into consideration for 100% accuracy.