Review ArticlesShoulder Instability: Anterior, Posterior, Multidirectional, Arthroscopic Versus Open, Bone Block ProceduresCoyner, Katherine J. MD; Arciero, Robert A. MDAuthor Information UConn Health, Farmington, CT Disclosure: The authors declare no conflict of interest. Reprints: Katherine J. Coyner, MD, UConn Health, Farmington, CT 06032. Sports Medicine and Arthroscopy Review: December 2018 - Volume 26 - Issue 4 - p 168-170 doi: 10.1097/JSA.0000000000000211 Buy Metrics Abstract This article presents a retrospective comprehensive review of the history of anterior, posterior, and multidirectional shoulder instability and also reviews key concepts such as open versus arthroscopic repair and glenoid and humeral head bone loss and associated treatments. The future of shoulder instability will continue to evolve as research and clinical experience will determine the direction of the future. Copyright © 2018 Wolters Kluwer Health, Inc. All rights reserved.