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The intermetatarsal nerve: a microscopic evaluation

C E Graham, K A Johnson, D M Ilstrup

    Foot & Ankle
    |November 1, 1981
    PubMed
    Summary
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    This study defines the microscopic characteristics of normal interdigital nerves to aid in diagnosing interdigital neuromas. Establishing these baseline measurements helps differentiate between healthy nerves and pathological neuroma conditions.

    Area of Science:

    • Anatomy
    • Histology
    • Podiatry

    Background:

    • Microscopic evaluation of interdigital neuromas is challenging due to imprecise descriptions of normal interdigital nerves.
    • Accurate differentiation between normal nerves and neuromas is crucial for effective diagnosis and treatment.

    Purpose of the Study:

    • To precisely characterize the microscopic appearance of normal interdigital nerves.
    • To establish objective criteria for differentiating normal interdigital nerves from interdigital neuromas.

    Main Methods:

    • Autopsy removal of 104 interdigital nerves from 14 female subjects (age > 48).
    • Microscopic analysis of nerve fascicle diameter, perineurial width, and vascularity in web spaces 2, 3, and 4.

    Main Results:

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    • A positive correlation was found between perineurial width and nerve fascicle internal diameter in web spaces 2, 3, and 4.
    • The number and diameter of blood vessels showed a positive correlation across all analyzed web spaces.

    Conclusions:

    • Established quantitative measurements of normal interdigital nerves.
    • These findings provide objective criteria to aid in the differential diagnosis of interdigital neuromas.