Shoulder Instability: Anterior, Posterior, Multidirectional, Arthroscopic Versus Open, Bone Block Procedures.

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.