Anatomical considerations, diagnosis, and treatment of medial and posterolateral elbow rotatory instability in athletes: an arthroscopic perspective and literature review.

Purpose: Elbow joint instability results from the disruption of one or more stabilizing anatomical structures. The two most common forms of instability are posterolateral rotatory instability (PLRI) and medial elbow instability (MEI), particularly in athletes. This review aims to explore the anatomical foundations, diagnostic methods, and therapeutic approaches for PLRI and MEI in athletes.