Review ArticlesManagement of Acute Isolated Medial and Posteromedial Instability of the KneeRoth, Jonathan MD*; Taylor, Dean C. MD†Author Information *Ft. Belvoir Community Hospital, Ft. Belvoir, VA †Duke Sports Medicine, Duke University, Durham, NC D.T. has received industry support for research (Histogenics) and for consulting (DePuy-Mitek). J.R.: The views expressed in this paper are those of the authors and do not reflect the official policy or position of the Department of the Navy, Department of Defense, or the United States Government. J.R. is a military service member. This work was prepared as part of my official duties. Title 17 U.S.C. 105 provides that “Copyright protection under this title is not available for any work of the United States Government.” Title 17 U.S.C. 101 defines a United States Government work as a work prepared by a military service member or employee of the United States Government as part of that person’s official duties. Reprints: Dean C. Taylor, MD, Box 3615 Duke University Medical Center, Durham, NC 27710. Sports Medicine and Arthroscopy Review: June 2015 - Volume 23 - Issue 2 - p 71-76 doi: 10.1097/JSA.0000000000000065 Buy Metrics Abstract Medial-sided knee injuries are very common, the medial collateral ligament being the most commonly injured ligament of the knee. Injuries to the medial side of the knee can occur in isolation or concomitant with other knee ligament injuries. Isolated grade I and II injuries have been typically treated nonoperatively with excellent results. Isolated grade III injuries, however, are less common and more controversial. Although some recent literature has shown acceptable results with nonoperative treatment of isolated grade III injuries, most authors recommend surgical treatment. A variety of operative techniques have been described, including repair, augmentation, and reconstruction, all with favorable outcomes. Choice of treatment method should be based on injury pattern with the goal of regaining valgus and anteromedial rotatory stability of the knee. Copyright © 2015 Wolters Kluwer Health, Inc. All rights reserved.