Based on what happened to the 4-year-old girl and her complaints, the most likely diagnosis is a fracture. One would expect to find that she feels severe pain when her right elbow is touched or flexed during the physical exam.
A fracture is a crack that occurs in the bone, either partial or complete crack. Usually, fractures occur from a one-time injury that happens fast (such as what happened to the girl in question), but they can also happen when there's a repeated stress of motion inflicted on the bone over a prolonged time. The best way to heal a fractured bone is to rest the broken body part.
Learn more about fracture types at https://brainly.com/question/18060335
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