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The transitional lumbosacral osseous complex

R E Wigh

    Skeletal Radiology
    |January 1, 1982
    PubMed
    Summary
    This summary is machine-generated.

    The transitional lumbosacral osseous complex, formed by lumbosacral transitional vertebrae, alters the body's weight-bearing platform. Its dimensions vary significantly across human phylogenetic categories.

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    Area of Science:

    • Anatomy
    • Biomechanics
    • Anthropology

    Background:

    • The spine transfers head and trunk weight to lower extremities via articulation with the ilii.
    • Lumbosacral transitional vertebrae can alter this weight-bearing pathway.
    • A distinct bony structure, the transitional lumbosacral osseous complex, is formed.

    Purpose of the Study:

    • To define and measure the transitional lumbosacral osseous complex.
    • To analyze variations in this complex across human phylogenetic categories.

    Main Methods:

    • Measurements of the transitional lumbosacral osseous complex length.
    • Inclusion of the articulating sacrum in human measurements.
    • Analysis across three phylogenetic categories.

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    Main Results:

    • The transitional lumbosacral osseous complex length ranged from 68 mm to 157 mm.
    • Variations in vertebral lengths ranged from 2.0 to 3.7.
    • Significant dimensional differences were observed across phylogenetic groups.

    Conclusions:

    • The transitional lumbosacral osseous complex represents a key anatomical region for weight transfer.
    • Understanding its dimensions and variations is crucial for anatomical and biomechanical studies.
    • Phylogenetic differences highlight the adaptability of human spinal anatomy.