What's your diagnosis? Hint: the patient is a toddler. I'll post the correct answer in a day or three!
Correct answer: Nursemaid's elbow (or radial head subluxation). It's a dislocation of the elbow joint caused by a sudden pull on the extended pronated arm, such as by an adult tugging on an uncooperative child, or swinging the child by the arms during play. It's mainly seen in children aged from 1 to 4 years.