Posterior band IGHL lesions

POSTERIOR BAND OF IGHL LESIONS:
Far less common than anterior
Most are due to posterior dislocation
Posterior band is thinnest of inferior glenohumeral ligament
Injuries in posterior band of inferior glenohumeral ligament occur at glenoid (25%), mid substance (44%) and humerus (31%)

PHAGL lesion:
Posterior Humeral Avulsion of Glenohumeral Ligament
Humeral Avulsion of the Posterior Band of the Inferior Glenohumeral Ligament
Rare

References:
Chung CB et al. Humeral Avulsion of the Posterior Band of the Inferior Glenohumeral Ligament: MR Arthrography and Clinical Correlation in 17 Patients . AJR 2004; 183:355-359