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Fig. 3C —Sonography and radiography of lateral aspect of elbow in
12-year-old male baseball player. No player was symptomatic at time of
sonographic examination. Sonogram (C) and corresponding diagram
(D) of lateral aspect of elbow on nonthrowing side show humeral
capitellum (C) and radial head (R) from sagittal view. Subchondral bone of
capitellum is identified as hyperechoic area (arrows), whereas its
articular cartilage is identified as hypo-echoic area
(arrowheads).
