ROLE OF SUB PUBIC ANGLE IN SEX ESTIMATION IN A NIGERIAN POPULATION
*Ogoun T. R., Didia B. C., Tobia P. S. Osunwoke E. A., and Yorkum L. K.
ABSTRACT
This study is aimed at determining sex using subpubic angle, which is one of the is most critical issues raised when an unknown human skeletal remains are found. The angle is measured by drawing two lines at the pubic rami which intersect at the pubic symphysis. A goniometer is placed at the intersection of these two lines then, the angle measured. A total of 1500 Anterior posterior pelvic radiographs were measured (703 males and 797 females between ages 25-45years). Samples were collected from Radiology Department of the University of Port Harcourt Teaching Hospital (UPTH), Braithwaite Memorial Hospital (BMH) Port Harcourt, Federal Medical Center (FMC) Yenagoa, Niger Delta University Teaching Hospital (NDUTH) Okolobiri Bayelsa State, University of Nigeria Teaching Hospital (UNTH) Ituku-Ozalla, Enugu State, National Orthopedic Hospital Igbobi Lagos, University of Abuja Teaching Hospital (UATH) Gwagwalada, FCT, Nigeria.The results showed that, the mean value of the subpubic angle of Nigerian males and females are 88.09±8.03 and 133.88±12.21 (p<0.05). Demarking points of <97.25 is a male and assign sex accurately to 90% while >112.18 is female and could ascertain sex to about 96% of Nigerian a population. This study also revealed that, the males subpubic angle is about 74.82% acute angle and 25.18% obtuse angle while the female have 0.00% acute angle and 100.00% obtuse angle. This present study have showed that, the Nigerian females have more expanded subpubic angle than their males’ counterparts (p< 0.05) which is a function of parturition.
Keywords: Demarking Points, Parturition, Subpubic Angle.
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