Multidirectional Instability

Multidirectional instability of the shoulder (MDI) is defined as a shoulder instability that occurs in more than one direction. MDI is often associated with shoulder hyperlaxity and athletes who practice sports in which hypermobility is required and MDI develops due to repetitive microtrauma. Imaging of the shoulder is not specific; diagnosis might be uncertain because it lacks pathognomonic findings and there is clinical variation in the presentation of symptoms. For these reasons, there is no treatment of choice and it should be tailored to each patient. Initial treatment should be conservative and surgery should be reserved for failed conservative treatment. Outcomes of different treatments are usually good.