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A normal variant simulating Freiberg's disease.

E L Jensen, A de Carvalho

    Acta Radiologica (Stockholm, Sweden : 1987)
    |January 1, 1987
    PubMed
    Summary
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    A common foot X-ray finding, a flat second metatarsal head with wider joint space, occurs in 10% of healthy individuals. This normal anatomic variant should not be misdiagnosed as Freiberg

    Area of Science:

    • Orthopedics
    • Radiology
    • Anatomy

    Background:

    • Freiberg's disease affects the metatarsal heads, causing pain and deformity.
    • Accurate diagnosis requires differentiating disease from normal variations.

    Purpose of the Study:

    • To identify and describe a common normal variant in foot radiography.
    • To prevent misdiagnosis of Freiberg's disease.

    Main Methods:

    • Radiologic examination of feet in 72 asymptomatic individuals.
    • Analysis of metatarsal head morphology and joint spaces.

    Main Results:

    • Bilateral flat configuration of the second metatarsal head observed in approximately 10% of subjects.
    • Associated wider joint space compared to adjacent joints noted in these cases.

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    Conclusions:

    • This finding represents a normal anatomic variant, not indicative of pathology.
    • Radiologists should be aware of this variant to avoid misinterpreting it as early or late-stage Freiberg's disease.