“…12,13 Once a model is deemed reproducible, it then needs to be validated. [14][15][16] Using an Alex shoulder model as a simulator, and then a cadaveric model, Angelo, Ryu, Pedowitz, Gallagher, and other AANA leaders and scholars compellingly identified reproducible and measurable steps representing proficiency in performing an arthroscopic Bankart repair. 17,18 This was the AANA Copernicus Initiative, and as a result, PBP training, rather than classical apprenticeship training, is developing as the avowed new center of our arthroscopic training solar system.…”