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Lumbosacral nerve-root anomalies

F Postacchini, S Urso, L Ferro

    The Journal of Bone and Joint Surgery. American Volume
    |June 1, 1982
    PubMed
    Summary
    This summary is machine-generated.

    Anomalous lumbosacral nerve roots were identified in 2.1% of patients. These anatomical variations, particularly Types III and IV, often led to severe nerve root compression symptoms, even with small disc herniations.

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    Area of Science:

    • Neurosurgery
    • Radiology
    • Anatomy

    Background:

    • Anomalous lumbosacral nerve roots are rare anatomical variations.
    • Understanding their prevalence and clinical significance is crucial for accurate diagnosis and treatment.

    Purpose of the Study:

    • To classify and report the prevalence of lumbosacral nerve root anomalies.
    • To investigate the association between these anomalies and clinical presentation, particularly nerve root compression.

    Main Methods:

    • Retrospective analysis of 2123 patients undergoing myelography with water-soluble contrast medium.
    • Classification of identified nerve root anomalies into five distinct types.
    • Correlation of anomaly types with patient symptoms and imaging findings.

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    Main Results:

    • Forty-six cases (2.1%) of anomalous lumbosacral nerve roots were identified.
    • Types III and IV anomalies were most common (69%), involving the L5 and S1 nerve roots.
    • Nerve root compression symptoms were severe, attributed to reduced root mobility, even with small disc herniations.

    Conclusions:

    • Lumbosacral nerve root anomalies are an important consideration in patients presenting with spinal symptoms.
    • Anatomical variations can significantly increase the severity of nerve root compression.
    • Surgical decompression is effective for symptomatic relief in these cases.