AKT-0537
A 5-year-old boy is brought to the emergency room by his mother. He was playing on the monkey bars at the playground and fell off, landing on his right arm. He started crying and complained that his right elbow hurt. He is now reluctant to move the elbow and holds it slightly flexed and pronated with the forearm held against the abdomen. There is no tenderness, swelling, bruising or deformity at the elbow.
Which is the MOST LIKELY diagnosis?