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Related Experiment Videos

Anterior interosseous nerve avulsion.

D N Collins, E R Weber

    Clinical Orthopaedics and Related Research
    |December 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

    Anterior interosseous nerve avulsion, often from distal humerus fractures, may be more common than thought. Traction on the median nerve causes this injury, but free nerve grafts can restore function.

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    Area of Science:

    • Orthopedic Surgery
    • Neurology
    • Anatomy

    Background:

    • Distal humerus fractures can cause nerve avulsion injuries.
    • The anterior interosseous nerve (AIN) is a motor branch of the median nerve.

    Observation:

    • A case study of a 19-year-old man with a distal humerus fracture revealed AIN avulsion.
    • Cadaveric dissection demonstrated that median nerve traction is the likely injury mechanism.
    • Clinical assessment involves specific neurological tests to evaluate AIN integrity and identify characteristic pinch deformities.

    Findings:

    • AIN avulsion may be an underrecognized complication of distal humerus fractures.
    • Accurate neurological examination is crucial for diagnosis.
    • Successful functional recovery is achievable with free nerve grafting.

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    Implications:

    • This study highlights the importance of considering AIN avulsion in patients with distal humerus fractures.
    • Early diagnosis and appropriate surgical intervention, such as nerve grafting, can lead to optimal patient outcomes.
    • Further research is warranted to determine the true incidence of AIN avulsion.