In this issue of Clinics in Sports Medicine, guest editors Drs. Jonathan F. Dickens and Brian C. Lau bring their considerable expertise to the topic of Shoulder Instability. Shoulder instability is a common injury in sports and orthopedic surgeons must stay up to date with on-field assessment, current imaging, and surgical and nonsurgical treatment strategies to help athletes get back in the game. In this issue, top experts discuss anterior and posterior shoulder instability in athletes, including shoulder anatomy and biomechanics, imaging, operative and nonoperative treatments, and more. Contains 14 relevant, practice-oriented topics including current imaging of anterior and posterior instability in the athlete; open Bankart repair: technique and outcomes for the high level athlete; rehabilitation and return to play for operative and nonoperative treatment of anterior shoulder instability; current concepts in assessment and management of failed posterior labral repair; and more. Provides in-depth clinical reviews on shoulder instability, offering actionable insights for clinical practice. Presents the latest information on this timely, focused topic under the leadership of experienced editors in the field. Authors synthesize and distill the latest research and practice guidelines to create clinically significant, topic-based reviews.