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The preauricular sulcus

P M Dee

    Radiology
    |August 1, 1981
    PubMed
    Summary

    The preauricular sulcus, a feature of the iliac bone, is a reliable indicator of female pelvis. This anatomical trait appears in about 25% of women, distinguishing them from males.

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    Area of Science:

    • Forensic Anthropology
    • Anatomy
    • Osteology

    Background:

    • The preauricular sulcus is a groove on the iliac bone.
    • Its presence has been suggested as a sexually dimorphic characteristic of the female pelvis.

    Purpose of the Study:

    • To investigate the reliability of the preauricular sulcus as a female pelvic characteristic.
    • To determine the prevalence of the preauricular sulcus in females.

    Main Methods:

    • Review of pelvic radiographs.
    • Analysis of 100 male and 200 female pelvic radiographs.

    Main Results:

    • The preauricular sulcus was confirmed as a female characteristic.
    • The feature was observed in approximately 25% of the female subjects.

    Conclusions:

    • The preauricular sulcus is a valuable indicator for sex determination in osteological analysis.
    • Its presence in a quarter of females highlights its utility in forensic anthropology.