Posterior shoulder instability: An overview

Posterior shoulder instability (PSI) is a relatively rare but increasingly recognized condition that affects athletes and individuals engaged in overhead or high-impact sports. Historically underdiagnosed, PSI encompasses a spectrum of clinical presentations, including subluxations and dislocations, often leading to pain, mechanical symptoms, and loss of function. Over the past decade, we have gained a better understanding of this challenging disorder. This overview discusses the anatomy and pathophysiology underlying PSI, highlights key diagnostic modalities and imaging techniques, and emphasizes the importance of a personalized approach to diagnosis and management.