Abstract
A fracture involving the trochlear ossification center as well as the medial epicondyle is a more serious injury than simple avulsion of the medial epicondyle. This diagnosis may be difficult in young children before the secondary centers are ossified. Radiographic clues to this injury in a young child are localized soft tissue swelling over the medial aspect of the elbow accompanied by a metaphyseal flake and/or a positive fat pad sign. In the older child, separation of the ossified medial epicondyle with a positive fat pad sign suggests a more complex injury.
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Brent Harrison, R., Keats, T.E., Frankel, C.J. et al. Radiographic clues to fractures of the unossified medial humeral condyle in young children. Skeletal Radiol 11, 209–212 (1984). https://doi.org/10.1007/BF00349496
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DOI: https://doi.org/10.1007/BF00349496