Illustrative CasesAcute-on-Chronic Anterolateral Tibiofibular Joint Dislocation in a ChildGill, Jeewanjit S. MD; Al-Shibli, Amal MD; Istasy, Victor MD, FRCPC; Lim, Rodrick MD, FRCPCAuthor Information From the Departments of Medicine and Paediatrics, Schulich School of Medicine, Western University; and the Children's Health Research Institute, Children's Hospital, London Health Sciences Centre, London, Ontario, Canada. Disclosure: The authors declare no conflict of interest. Reprints: Rodrick Lim, MD, FRCPC, Children's Hospital, London Health Sciences Centre, 800 Commissioners Rd E, London, ON, Canada N6C 2V5 (e-mail: [email protected]). Pediatric Emergency Care: May 2017 - Volume 33 - Issue 5 - p 350-351 doi: 10.1097/PEC.0000000000001123 Buy Metrics Abstract Tibiofibular joint injury in children is an uncommon injury. It is usually associated with acute injuries in sports that involve aggressive twisting of the knee, such as soccer and snowboarding. We present a case of a 17-year-old male adolescent who sustained an acute dislocation of the anterolateral tibiofibular joint with routine ambulation, who had a chronic history of subluxation. To our knowledge, this has not been previously reported. The diagnosis requires a high level of awareness and suspicion, and plain radiographs may aid in the diagnosis especially if contralateral comparison views are obtained. Copyright © 2017 Wolters Kluwer Health, Inc. All rights reserved.