Estimation of Race and Sex Using Ischiopubic Index and Subpubic Angle in Upper Egypt

Samira Saleh

doi:10.21608/ajfm.2014.19161

Abstract

Accurate estimations of race and sex are essential tools in forensic anthropology. The pelvic bones are the most accurate bones from which sex can be determined, where ischiopubic index and subpubic angle are important parameters in these bones. The objective of our study is to determine ischiopubic index and subpubic angle in Egyptian males and females and compare them with other populations. Antero -posterior radiographs of 120 adult males and females (aged from 18 to 70 years) were studied for measurement of the pubic length, the ischial length and subpubic angle. Results: the mean of pubic length, ischial length, ischiopubic index and subpubic angle in Egyptians males were 72.4 mm, 80.6 mm, 86.3 and 102.4° respectively. The mean of pubic length, ischial length, ischiopubic index and subpubic angle in Egyptians females were 83.5 mm, 74.5 mm, 103.5 and 141.2° respectively. The mean of pubic length was significantly increased in females than males in the (p<0.05), while the mean ischial length was significantly higher in males than females (p<0.05), the mean ischiopubic index was significantly higher in females than males (p<0.05), while the mean of subpubic angle in females was significantly higher than males

Highlights

The ischiopubic index is the measurement of the distance between the acetabulum and the pubic tubercle of the pelvic bone divided by the distance between the acetabulum and ischial tuberosity of the pelvic bone multiplied by hundred (Rogers and Saunders, 1994)
The ischiopubic index mean ± S.D value in males was 86.3 ± 9.4, and in females was 103.5 ± 7.9, the number of males identified by sex represents 65.4 %, while the number of females identified by sex represents 67.8 %
The subpubic angle mean ± S.D values in males and females were 99.4° ± 10.6° and 141.2° ± 12.5° respectively. the number of males identified by sex represents 71.3 %, while the number of females identified by sex represents 66.2 %

Summary

Introduction

Introduction and objectiveOur study was done to record the ischiopubic index and subpubic angle of adult Egyptian males & females, the over all mean was determined and compared to other populations for sexual and racial estimation.Skeletal characteristics vary among populations, so each population should have specific standards to optimize the accuracy of identification (Iscan, 2005)The pelvic bones are the most accurate bone from which sex is determined, about 95% of sexing accuracy can be expected if the pelvis is complete (Krogman and Iscan 1986).The ischiopubic index is the measurement of the distance between the acetabulum and the pubic tubercle of the pelvic bone (pubic length) divided by the distance between the acetabulum and ischial tuberosity of the pelvic bone (ischial length) multiplied by hundred (Rogers and Saunders, 1994).The sub-pubic angle is one of the most important angles of the pelvic outlet which present below the symphysis pubis as a triangular interval between the inferior rami of the pubic bones. The pelvic bones are the most accurate bone from which sex is determined, about 95% of sexing accuracy can be expected if the pelvis is complete (Krogman and Iscan 1986). The ischiopubic index is the measurement of the distance between the acetabulum and the pubic tubercle of the pelvic bone (pubic length) divided by the distance between the acetabulum and ischial tuberosity of the pelvic bone (ischial length) multiplied by hundred (Rogers and Saunders, 1994). Gender differentiation in skeletal human remains is an important component of anthropological investigations and should be based on measurements and clarifications on the entire skeleton to be significant. Singh and Potturi (1978) reported that it is almost impossible to determine the sex of an individual from the skeletal remains unless all the bones are available, except in case of the hip bones

Objectives

Results

Conclusion