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Related Experiment Videos

The painful accessory navicular.

J P Lawson, J A Ogden, E Sella

    Skeletal Radiology
    |January 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    The accessory navicular bone, often a normal variant, can cause pain in athletic adolescents. Surgical resection may be the best treatment for symptomatic cases.

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    Area of Science:

    • Orthopedics
    • Radiology
    • Podiatry

    Background:

    • Accessory navicular bone is typically a benign finding.
    • It presents as Type 1 (within posterior tibial tendon) or Type 2 (medial to navicular).
    • Type 2 can fuse with the navicular bone during skeletal maturity.

    Observation:

    • Type 2 accessory navicular can cause foot pain, especially in athletic adolescents.
    • Radiographically, the ossicle is triangular or heart-shaped.
    • 99mTc MDP imaging can help determine the significance of the ossicle.

    Findings:

    • Histologic examination shows inflammatory changes consistent with chronic trauma.
    • Increased radionuclide activity on imaging is localized to the symptomatic side.
    • Nonsurgical treatments like orthotics or casting yield inconsistent results.

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    Implications:

    • Symptomatic accessory navicular should not be dismissed as a simple variant.
    • Surgical resection of the accessory navicular may be the preferred treatment.
    • Understanding the pathophysiology aids in managing painful accessory navicular conditions.