Review ArticlesIsolated Fibular Collateral Ligament Injuries in AthletesSikka, Robby S. MD*; Dhami, Ranjodh BS†; Dunlay, Ryan MD*; Boyd, Joel L. MD* Author Information *TRIA Orthopaedic Center †Penn State College of Medicine, Minneapolis, MN Disclosure: The authors declare no conflict of interest. Reprints: Joel L. Boyd, MD, TRIA Orthopaedic Center, 8100 Northland Drive, Minneapolis, MN 55431. Sports Medicine and Arthroscopy Review 23(1):p 17-21, March 2015. | DOI: 10.1097/JSA.0000000000000044 Buy Metrics Abstract Isolated injuries to the fibular collateral ligament (FCL) are rare. Although recent data suggest that operative and nonoperative treatment can both result in good functional outcomes, limited data exist on return to play for nonoperative treatment of FCL injuries and the value of magnetic resonance imaging in predicting prognosis. In this article, we present a review of the current literature and present a focused review regarding the diagnosis, treatment, and prognosis of FCL injuries, as well as the senior authors experience and a cohort of National Football League players. Magnetic resonance imaging can be useful to predict the length of disability in isolated FCL injuries, and both operative and nonoperative management of isolated FCL injuries successfully resulted in return to play in all players in several series of elite athletes; however, nonoperative management may result in faster return to play. Evaluation of potential concomitant injury is imperative in treatment of FCL injuries. Copyright © 2015 Wolters Kluwer Health, Inc. All rights reserved.