Supracondylar fractures are the most common fracture of the | Figure 1

CincyKidsRad

Cincinnati Children's Radiology

Supracondylar fractures are the most common fracture of the elbow in children

Lateral (image 1) and AP radiograph (image 2) of the elbow in a child show a supracondylar fracture (arrow). Supracondylar fractures are the most common fracture of the elbow in children. On the lateral view, findings of a supracondylar fracture include a posterior joint effusion causing uplifting of the fat pad (arrowhead) and posterior displacement of the capitellum. Normally, the anterior humeral line (dashed line) bisects the anterior third of the capitellum. With supracondylar fractures, the anterior humeral line may no longer bisect the capitellum.

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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

AP (image 1) and lateral (image 2) radiograph of the elbow in an adolescent with elbow pain shows osteochondritis dissecans of the capitellum (arrow). Osteochondritis dissecans may occur due to repetitive microtrauma. The most common location is in the lateral aspect of the medial femoral condyle. Other, less common locations of occurrence include the capitellum and talus.

AP (image 1) and lateral (image 2) radiograph of the elbow shows a complex fracture dislocation at the elbow. The forearm is rotated 90 degrees clockwise from the humerus. Ossific fragments are present adjacent to the head of the radius. The medial epicondyles (arrow) is avulsed and displaced within the elbow joint. This type of complex injury places the patient at risk for neurovascular injury.

AP and lateral radiographs of the elbow show a fracture of the proximal ulna and dislocation of the radiocapitellar joint. There is also a large elbow effusion. Radiocapitellar alignment can be determined by drawing the radiocapitellar line (yellow line). Normally, this line should bisect the capitellum on both views. In this case, the line extends lateral to the capitellum on the AP view and above it on the lateral view. #MSKMonday

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