[Bony Bankart lesions and glenoid defects : From refixation techniques to bony augmentation].

Rim defects of the anterior glenoid cavity are a main reason for residual shoulder instability after traumatic dislocation of the shoulder. These defects can be the result of a glenoid rim fracture or chronic glenoid erosion after repeated shoulder dislocations. Treatment concepts for these entities are entirely different. While in the acute fracture situation glenoid rim fractures can be treated operatively or non-operatively, augmentation of the anterior glenoid for stabilization of the shoulder should be considered if the defect exceeds 15-25% of the anterior glenoid. The purpose of this article is to summarize the diagnostics and indications for treatment of glenoid rim fractures. Radiological assessment and options for augmentation are reviewed for both acute fractures as well as chronic instability following an anterior glenoid rim defect.