Sexual dimorphism of proximal epiphyseal breadth of tibiae

Authors:Dangar K P, Pandya A M , Rathod S P , Tank KC , Akbari VJ, Solanki S V
Int J Biol Med Res. 2012; 3(1): 1331-1334  |  PDF File

Abstract

Sexual identification from the skeleton or its parts is very vital medico-legally and anthropologically. Present study aims to obtain values of proximal epiphyseal breadth of tibia and to estimate its role in determining correct sexual identification. Study was carried out on 194 dry, normal, adult, human tibiae (106 male & 88 female) at Anatomy department, P.D.U medical college, Rajkot Gujarat (India). Proximal epiphyseal breadth was measured by noting maximum distance between outer most points on the lateral and medial tibial condyles with sliding caliper in centimeter. Mean values obtained were 7.12 cm & 6.29 cm for right male & female and 7.08cm & 6.31cm for left male and female respectively. Higher values in female were statistically highly significant (P< 0.001) on both sides. Demarking point (D.P.) analysis of the data showed that right tibia with proximal epiphyseal breadth more than 7.87 were definitely male and less than 5.04 were definitely female; while for left bones, tibia with proximal epiphyseal breadth more than 8.14 were definitely male and less than 5.34 were definitely female. Proximal epiphyseal breadth identified 2.27% of right female tibiae. It was not useful for right male bones or for left bones.