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Related Experiment Videos

Sexual differentiation in the innominate bone studied by multivariate analysis.

M H Day, R M Pitcher-Wilmott

    Annals of Human Biology
    |April 1, 1975
    PubMed
    Summary

    This study developed a computer program to determine sex from innominate bones, accurately identifying sex in 58 of 59 cases. However, accuracy may decrease when applied to new forensic anthropology samples.

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    Area of Science:

    • Forensic Anthropology
    • Bioanthropology
    • Osteology

    Background:

    • Accurate sexual attribution of skeletal remains is crucial in forensic anthropology.
    • The innominate bone offers valuable metrics for sex estimation.
    • Developing objective, computer-aided methods can improve reliability.

    Purpose of the Study:

    • To develop and test a computer-applied discriminant function for sexual allocation using innominate bone measurements.
    • To assess the accuracy of this function in retrospectively sexing skeletal remains.

    Main Methods:

    • Seventeen absolute measurements were taken from 60 innominate bones.
    • Seven indices were calculated from these measurements.
    • A discriminant function was developed using reference groups and applied retrospectively.

    Main Results:

    • A discriminant function was created from 59 innominate bones after discarding inadequate data.
    • The function correctly sexed 58 of the 59 bones retrospectively.
    • Fifty-four individuals were sexed with a probability exceeding 0.95.

    Conclusions:

    • The developed discriminant function shows high accuracy for sex determination on the reference sample.
    • Caution is advised regarding the direct application of this reference group's data to new, unsexed materials.
    • Further validation on diverse skeletal populations is recommended for broader applicability in forensic science.

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