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[The accessory deep peroneal nerve. Electrophysiologic study].

P Azouvi, P Bouche, H P Cathala

    Revue D'Electroencephalographie Et De Neurophysiologie Clinique
    |March 1, 1986
    PubMed
    Summary
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    Anatomical variations in the extensor digitorum brevis muscle's innervation by the deep peroneal nerve were detected in 12 of 67 subjects. Understanding these variations is crucial for accurate peroneal motor nerve conduction velocity interpretation.

    Area of Science:

    • Anatomy
    • Neuroscience
    • Clinical Electrophysiology

    Context:

    • The extensor digitorum brevis (EDB) muscle is typically innervated by the deep peroneal nerve.
    • Anatomical variations in nerve innervation can impact electrodiagnostic studies.
    • Accurate interpretation of motor nerve conduction velocity (MNCV) is essential for diagnosing neurological conditions.

    Purpose:

    • To investigate the prevalence of accessory deep peroneal nerve innervation of the EDB muscle.
    • To highlight the utility of motor nerve conduction studies in identifying anatomical variations.
    • To emphasize the clinical significance of recognizing these variations for accurate electrodiagnostic interpretations.

    Summary:

    • The deep peroneal nerve usually innervates the extensor digitorum brevis muscle.

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  • An accessory deep peroneal nerve was found to innervate the EDB in 12 out of 67 subjects, sometimes exclusively or bilaterally.
  • Motor nerve conduction studies are effective in detecting this anatomical variation.

    • Impact:

    • Recognition of accessory deep peroneal nerve innervation is vital to prevent misinterpretation of peroneal MNCV.
    • This finding aids neurologists and electrodiagnostic technicians in refining diagnostic accuracy.
    • Improved understanding of EDB innervation variations contributes to more precise clinical assessments.