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Physeal injuries of the clavicle: pediatric counterparts to adult acromioclavicular and sternoclavicular joint separations

  • Musculoskeletal imaging
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Abstract

The epiphyses at the medial and lateral ends of the clavicle are small, ossify relatively late, and may not fuse until early adulthood. Because of this unique anatomy, pediatric and young adult injuries that involve the clavicle often differ from the patterns typically seen in older adults. Clavicular trauma that affects the acromioclavicular joint laterally or sternoclavicular joint medially often results in a physeal fracture and as such, can go unrecognized or be mistaken for a joint dislocation. Radiographic assessment is challenging, particularly when the epiphysis is not yet ossified. However, MR imaging allows for visualization of the cartilage, periosteum and perichondrium, and ligaments of the affected joints. Lateral clavicle physeal injuries can be categorized by the Dameron and Rockwood system, the pediatric correlate to the Rockwood classification of adult acromioclavicular joint injuries. Medial clavicle physeal fractures, similar to adult sternoclavicular joint dislocations, may result in anterior or posterior displacement. Because of their great ability to heal and remodel, clavicular physeal fractures respond better to conservative management than true acromioclavicular or sternoclavicular joint dislocations. Therefore, it is essential to recognize the true nature of these injuries, as there are implications for successful treatment and appropriate prognosis.

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Authors and Affiliations

  1. Department of Radiology, Boston Children’s Hospital, Harvard Medical School, Boston, MA, USA

    Wendy G. Kim, Tal Laor & Delma Y. Jarrett

  2. Department of Radiology, New York-Presbyterian Hospital, Weill Cornell Medicine, 525 E. 68Th St., New York, NY, 10065, USA

    Delma Y. Jarrett

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  1. Wendy G. Kim
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  2. Tal Laor
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Kim, W.G., Laor, T. & Jarrett, D.Y. Physeal injuries of the clavicle: pediatric counterparts to adult acromioclavicular and sternoclavicular joint separations. Pediatr Radiol 53, 1513–1525 (2023). https://doi.org/10.1007/s00247-023-05617-6

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