AP (image 1) and lateral (image 2) radiograph of the elbow s | Figure 1

CincyKidsRad

Cincinnati Children's Radiology

AP (image 1) and lateral (image 2) radiograph of the elbow shows radial and anterior displacement of the radius and ulna (arrow on image 1) and an avulsion fracture of the lateral condyle (arrow on image 2). En bloc displacement of the radius and ulna alerts the pediatric radiologist to the presence of distal humeral epiphyseal separation. This fracture is most commonly caused by a fall on an outstretched hand, hyperextensions, and rotation. It is important to recognize due to its strong association with nonaccidental trauma and the need for fixation by orthopedic surgery. On radiography, there is typically ulnar and posterior displacement of the radius and ulna. The images shown in this patient are atypical due to the radial and anterior displacement of the radius and ulna. #MSKMonday #MusculoskeletalMonday

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