Musculoskeletal Key

Introduction Bryan Warme, MD Scott A. Rodeo, MD Epidemiology • Multidirectional instability (MDI) of the shoulder has various definitions in the literature. Shoulder instability can be categorized into anterior, posterior, or inferior…

Introduction Demetris Delos, MD Travis G. Maak, MD Russell F. Warren, MD Epidemiology • Posterior shoulder instability is less frequently encountered than anterior instability, accounting for only 2% to 10% of all instability…