Medial Epicondyle Avulsion



Medial Epicondyle Avulsion


Cassandra M. Sams



CLINICAL HISTORY

10-year-old male with right elbow pain after a fall from a horse.






FIGURE 16A






FIGURE 16B






FIGURE 16C


FINDINGS

Anteroposterior (Fig. 16A), oblique (Fig. 16B), and lateral (Fig. 16C) radiographs of the elbow demonstrate an ossified body medial and distal to the expected location of the medial epicondyle. An open growth plate (arrow) is noted associated with the ossified body. Marked soft tissue swelling is noted about the right elbow, greater along the medial aspect. No elbow effusion is seen.


DIFFERENTIAL DIAGNOSIS

Medial epicondyle avulsion, fracture of the medial condyle.




DISCUSSION

The skeletally immature elbow can be a source of confusion owing to the multiple ossification centers, and the varying ages at which they appear. The well-known mnemonic CRITOE (capitellum, radial head, internal/medial epicondyle, trochlea, olecranon, and external/lateral epicondyle) is a helpful memory aid on which to rely. The medial epicondyle is typically seen at around 5 to 7 years of age. Although the exact timing of the appearance of the ossification centers is not important, the order in which they should appear is.

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Aug 1, 2016 | Posted by in NEUROLOGICAL IMAGING | Comments Off on Medial Epicondyle Avulsion

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