Humeral Avulsion of Glenohumeral ligament
Avulsion of Anterior band of IGHL from humeral neck
Inferomedial retraction of the ligament apperas thick and irregular
Associated with rotator cuff tears (90% subscapularis tears), Bankart lesion, Hill Sachs lesion
Extravasation of contrast anterior to humeral neck and shaft
On coronal, normal U shape is lost and retracted J shaped IGHL anterior band may be seen or may not be seen
Associated with anterior capsule rupture amd contrast extravasation is seen anterior to humeral neck
20% associated with bony HAGL injury
Rarely floating avulsion at both attachment may occur, when it is called Avulsion of IGHL (AIGHL)
References:
Robinson G et al. Normal anatomy and common labral lesions at MR arthrography of the shoulder. Clin Rad 61 (805-821)
