In this UK study, researchers sought to understand the variation in delivery and outcomes among Enhanced Recovery After Surgery (ERAS) programs for hip and knee replacement patients. These programs are designed to enhance care quality by optimizing components of the care pathway. To comprehend the processes that influence implementation, researchers used the Consolidated Framework for Implementation Research (CFIR) to inform the design and deliver of services. This ethnographic study, which used observations and interviews with staff involved in service delivery, suggests concerns about post discharge support and tensions with primary care. Researchers said that the findings demonstrate that successful ERAS implementation involves empowering patients, providing support, and promoting multidisciplinary team work.