Plastic Bowing, Torus and Greenstick Supracondylar Fractures of the Humerus: Radiographic Clues to Obscure Fractures of the Elbow in Children

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Abstract
The anterior humeral line [AHL] is a valuable aid in the search for supracondylar fractures in children. When it is abnormal other signs of fracture should be carefully sought. The AHL was normal in only 5.8% of the cases reviewed (4 of 68 cases). There was other evidence of fracture in each case. Comparison of the AHL on both sides is helpful when the AHL is normal since it may disclose subtle displacement of the line on the affected side. In children younger than 2 1/2 yr the AHL may pass through the anterior third of the capitellum due to the small size of the ossification center; in these patients comparison with the opposite side may also be helpful.

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