Anterior shoulder dislocation with Perthes lesion and HAGL

Localized marrow edema and depression over the posterosuperior aspect of the humeral head, consistent with a Hill-Sachs lesion

A tear involving the anterior labrum between 2 o'clock and 5 o'clock positions. There is a fluid cleft signal intensity between the detached labroligamentous complex and the anterior aspect of the glenoid, consistent with periosteal stripping.  No displacement of the labroligamentous complex is noted. The appearance is consistent with Perthes lesion.

The adjoining middle glenohumeral ligament also appears thickened and hyperintense and is likely torn.

Thickening and hyperintensity of the anterior and posterior bands of the inferior glenohumeral ligament. with localized soft tissue edema at the attachment of the posterior band of the inferior glenohumeral ligament to the humerus consistent with a capsular tear (HAGL).

Linear defect in the articular cartilage of glenoid suggesting GLAD.

Mild glenohumeral joint effusion.

A partial thickness tear involving the superior labrum between 11 and 12 o'clock positions.

• red arrow demonstrates the undisplaced labroligamentous complex. Yellow arrow shows periosteal stripping
• red arrow demonstrates linear defect in the articular cartilage of glenoid suggesting GLAD
• blue arrow demonstrates thickened middle glenohumeral ligament
• red arrow demonstrates thickened and hyperintense inferior glenohumeral ligament with pericapsular edema suggesting HAGL
• red arrow points at hyperintensity at glenoid attachment of inferior glenohumeral ligament