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Figure 10.   Decreased range of motion of the right elbow in a 10-year-old boy after trauma. Sagittal reformation image from double-contrast multisection CT arthrography (1.0-mm section thickness, 0.5-mm longitudinal reconstruction interval) shows deformities of the proximal radial epiphysis and distal humerus and radial subluxation. A 5-mm defect (arrow) in the articular cartilage of the radial head is seen.