BACKGROUNDShoulder joint is the most commonly dislocated joint and it is most commonly dislocated anteriorly. Based on aetiology and age, there are associated injuries like injury to anterior-inferior labroligamentous restraints (in young people with traumatic aetiology) and to bony restraints (in elderly people). Injury to labroligamentous structures are best visualised using MRI and MR arthrography. Instability can be anterior, posterior and inferior or multidirectional. Anterior instability are associated with Bankart's lesion and variants of it and injuries to anterior part of Inferior Glenohumeral Ligament (IGHL). With posterior instability lesions expected are reverse Bankart's and reverse Hill-Sachs lesions.