CME Review ArticleEvaluation of Hip Pain and Management of Toxic Synovitis in the Ultrasound EraTakundwa, Prisca MD; Chen, Lei MD, MHS; Malik, Rabia N. MDAuthor Information From the Fellow and Associate Professor, Department of Pediatric Emergency Medicine, Yale University School of Medicine, New Haven, CT. The authors, faculty, and staff in a position to control the content of this CME activity and their spouses/life partners (if any) have disclosed that they have no financial relationships with, or financial interest in, any commercial organizations relevant to this educational activity. Reprints: Rabia N. Malik, MD, Department of Pediatric Emergency Medicine, Yale University School of Medicine, Suite 1F, 100 York St, Suite 1F, New Haven, CT 06511 (e-mail: [email protected]). Pediatric Emergency Care: January 2021 - Volume 37 - Issue 1 - p 34-38 doi: 10.1097/PEC.0000000000002314 Buy Take the CME Test Metrics Abstract The cause of acute onset hip pain in children can be difficult to determine. Once trauma is excluded, the workup revolves around determining whether there is a hip effusion and eliminating orthopedic emergencies. Point-of-care-ultrasound can be used as an adjunct in the workup. In this article, we review (1) differential diagnosis of hip pain, with a focus on toxic synovitis; (2) the evaluation of a hip for the presence of effusion, including the point-of-care ultrasound technique; and (3) the management of toxic synovitis. Copyright © 2020 Wolters Kluwer Health, Inc. All rights reserved.