The External Occipital Protuberance: Can It Be Used as a Criterion in the Determination of Sex?

Nadir Gülekon · Hasan Basri Turgut

55 citations0/0 files storedJournal of Forensic Sciences

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Forensic Anthropology and Bioarchaeology Studies Forensic and Genetic Research Forensic Entomology and Diptera Studies

Abstract

Sex determination of a corpse can be problematic in cases where the body is damaged. Useful criteria would assist in the identification of sex in such cases. The goal of this study is to determine the usefulness of the external occipital protuberance (EOP) in the determination of sex, especially in lateral cranium radiographs. The types and configurations of the EOP were investigated on normal lateral cranium radiographs of 1000 subjects (500 males and 500 females) and 694 dry-skull remains (371 males and 323 females) from a 16th Century Anatolian population for the purpose of sex determination. In the radiographic examination, the incidence of less prominent (Type 1) EOP is found to be 85.4% in females whereas 17.8% in males. The spine type (Type 3) EOP is found to be 63.4% in males and to be 4.2% in females. On the other hand, studies of dry-skull remains revealed the incidence of Type 1 EOP to be 67.5% in females and Type 3 EOP to be 55.2% in males. The crest type (Type 2) EOP is approximately equal in both sexes and is found to be less valuable for sex determination in both groups.

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1963The human skeleton in forensic medicine 1955The human skeleton in forensic medicine. I.1971History of Human Life Span and Mortality 1980Recommendations for age and sex diagnoses of skeletons 1980Recommendation for Age and Sex Diagnoses of Skeletons 1963Sex determination by discriminant function analysis of crania 1997Forensic analysis of the skull 1959R. Martin - K. Saller: Lehrbuch der Anthropologie. 3. Aufl., 7. Lieferung, brosch, Preis DM 21, 60. Gustav Fischer Verlag. Stuttgart (1958).

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