Wyles CC, Abdel MP, Amundson AW, et al. - This phase II study was intended to expand the perioperative surgical home to include revision THAs and TKAs, hip preservation procedures, and reconstructions after oncologic resections, expand the project to include the preoperative phase, and further refine the perioperative surgical home goals accomplished in Phase I. Between July 2018-July 2019, researchers designed phase II of the orthopedic surgery and anesthesiology surgical improvement strategies (OASIS) project. This study’s findings demonstrated that the application of previously successful health systems engineering tools and methods in Phase I of OASIS enabled additional evolution of an orthopedic perioperative surgical home to encompass more diverse and complex patient populations while increasing system-wide quality, safety, and financial outcomes. It was shown that the improved process and outcomes metrics reflected increased effectiveness across the episode of care without untoward effects.