RecruitingDiagnostic testThe Utilization of Ultrasound to Diagnose Pediatric Elbow FracturesThe goal of this intervention trial is to learn if a ultrasound diagnosis of elbow fractures can improve care in pediatric patients seen in the emergency room. The main questions it aims to answer are: The primary outcomes measured are cost of the emergency visit, radiation exposure, time spent in the emergency department and patient satisfaction. Patients who are evaluated with ultrasounds of the elbow will be compared to patients who have x-rays of the elbow. Participants will be assigned either to the ultrasound group or x-rays group when they present with elbow pain.