Capitellum fracture

Case contributed by Dr Jeremy Jones

Presentation

Fall from monkey bars. Unable to straighten arm.

Patient Data

Age: 12 years
Gender: Male
X-ray

The lateral film demonstrates a small joint effusion but it is not until the oblique film (unintentionally oblique and actually performed as the first film of the study) that we see an irregularity to the anterior cortex of the capitellum.

CT

As demonstrated on the plane flim, there is an oblique fracture through the medial portion of the capitellum.

Annotated image

The oblique fracture through the capitellum is clearly demonstrated on the CT.

Case Discussion

Fracture of the capitellum is not a common injury in the paediatric population, but may occur where there is direct trauma to the medial distal humerus.

This was picked up on the oblique radiograph performed at the time of injury. The obliquity was unintentional but it highlights the importance of always looking at all the imaging that is available at the time of reading the study.

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Case information

rID: 23352
Case created: 8th Jun 2013
Last edited: 16th Oct 2015
Inclusion in quiz mode: Included

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