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Common calcaneal avulsion fracture.

J F Norfray, L F Rogers, G P Adamo

    AJR. American Journal of Roentgenology
    |January 1, 1980
    PubMed
    Summary

    An avulsion fracture of the calcaneus, often missed, occurs in 10% of ankle injury patients. Diagnosis is via standard X-rays, and treatment involves conservative measures for a good recovery.

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    Area of Science:

    • Orthopedics
    • Radiology
    • Sports Medicine

    Background:

    • Ankle inversion injuries frequently lead to fractures.
    • Avulsion fractures of the calcaneus can be challenging to diagnose.
    • The extensor digitorum brevis muscle plays a role in ankle stability.

    Purpose of the Study:

    • To identify and characterize calcaneal avulsion fractures.
    • To determine the incidence of these fractures in emergency room settings.
    • To differentiate this fracture from other common ankle injuries.

    Main Methods:

    • Retrospective review of emergency room patients with suspected ankle fractures.
    • Analysis of standard foot (dorsoplantar) and ankle (anteroposterior) X-rays.
    • Comparison with differential diagnoses like os peroneum and anterior calcaneal process fractures.

    Main Results:

    • An avulsion fracture at the calcaneus, originating from the extensor digitorum brevis, was identified.
    • This fracture was present in 10% of patients with clinically suspected ankle fractures.
    • Radiographic views (dorsoplantar and anteroposterior) were effective in demonstrating the fracture.

    Conclusions:

    • Calcaneal avulsion fractures are an important consideration in ankle inversion injuries.
    • Routine radiography can diagnose this fracture, though it may be confused with other ossicles or fractures.
    • Conservative management, including elevation, supportive bandaging, and early mobilization, is typically effective.

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