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The pseudo-boutonniere deformity.

A G Rothwell

    The New Zealand Medical Journal
    |January 24, 1979
    PubMed
    Summary
    This summary is machine-generated.

    Pseudo-boutonniere deformity, a hyperextension injury of the proximal interphalangeal joint, affects the little and ring fingers. Treatment involves dynamic splinting, and distinguishing it from true boutonniere deformity is crucial.

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    Area of Science:

    • Orthopedic Surgery
    • Hand Surgery
    • Sports Medicine

    Background:

    • Pseudo-boutonniere deformity mimics the true boutonniere deformity.
    • It results from hyperextension injury to the proximal interphalangeal (PIP) joint.
    • Volar soft tissue injury is the primary cause.

    Purpose of the Study:

    • To describe the features, pathomechanics, and prophylaxis of pseudo-boutonniere deformity.
    • To outline the recommended treatment approach.
    • To emphasize the differential diagnosis from true boutonniere deformity.

    Main Methods:

    • Literature review on pseudo-boutonniere deformity.
    • Analysis of clinical features and injury mechanisms.
    • Description of diagnostic criteria and treatment modalities.

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    Main Results:

    • Pseudo-boutonniere deformity is characterized by PIP joint hyperextension and volar soft tissue disruption.
    • It predominantly affects the little and ring fingers.
    • Dynamic splinting is the primary treatment strategy.

    Conclusions:

    • Accurate diagnosis is essential to differentiate pseudo-boutonniere from true boutonniere deformity.
    • Understanding the pathomechanics guides effective treatment.
    • Prophylaxis strategies should be considered in at-risk populations.