Posterior Bone Grafting for Glenoid Defects of the Shoulder

Posterior shoulder instability is a challenging clinical entity that requires a comprehensive history and physical examination, as well as relevant imaging studies, to confidently make the diagnosis. Posterior shoulder instability may cause significant shoulder dysfunction and pain. Several anatomical features contribute to posterior instability, including soft tissue lesions and posterior glenoid bone loss. Posterior shoulder stabilization with bone graft transfer procedures and glenoid osteotomies to restore the normal glenohumeral arc have been revisited in recent years to address posterior glenoid bone erosion and glenoid version issue. This review article provides a comprehensive description of posterior shoulder instability with a focus on the treatment of posterior glenoid bone defects and glenoid version issues.