“…While limited in number, such cases are consistent with recent evidence indicating the inadequacy of surgical decision-making based on a single BMI cutoff [ 30 , 31 ] and support standardized application of patient selection criteria, preoperative medical optimization, and perioperative risk management for patients undergoing both primary and revision TJA in an ambulatory setting. Evidence-based enhanced recovery, fast-track, and short-stay protocols for the preoperative, intraoperative, and postoperative management of TJA patients have a proven track record of success in reducing perioperative medical complications in both the inpatient and outpatient settings [ [32] , [33] , [34] , [35] ] Key features of these protocols include medical evaluation, patient optimization, and education before surgery, as well as perioperative strategies to control glycemia, adverse anesthesia effects, pain, nausea and vomiting, infection, venous thromboembolism, blood loss requiring transfusion, and urinary retention [ 36 , 37 ].…”