Mahure SA, Feng JE, Schwarzkopf RM, et al. - This study was intended to evaluate whether immediate postsurgical pain, opioid use, and clinical function differed between unicompartmental knee arthroplasty (UKA) and total knee arthroplasty (TKA). Researchers applied a single-institution database to distinguish patients who had undergone elective total joint arthroplasty between 2016 and 2019. A total of 6,616 patients were distinguished: 98.20% TKA (6497) and 1.80% (119) UKA. In comparison with TKA patients, UKA patients are younger, have lower body mass index and American Society of Anesthesiologists scores, and more often male. This study's findings demonstrated that in comparison with TKA patients, UKA patients had significantly shorter length of stay and were discharged home more often than TKA patients, on both the day of surgery and following hospital admission. It was shown that UKA patients noted lower pain scores and were found to need 45% lower opioid medication in the immediate postsurgical period than TKA patients. The results of this research reveal that UKA and TKA patients discharged on the day of surgery did not differ in terms of pain scores, opioid utilization, or mobilization, implying that the rapid rehabilitation UKA protocols can be successfully translated to outpatient TKAs with similar results.