Wilson HA, et al. - Between 1 January 1997 and 31 December 2018, via searching Medline, Embase, Cochrane Controlled Register of Trials (CENTRAL), and Clinical Trials.gov, researchers provided a clear and comprehensive summary of the published data on unicompartmental knee replacement (UKA) or total knee replacement (TKA), comparing domains of outcome that have been shown to be important to patients and clinicians in order to enable informed decision making. Findings suggested that TKA and UKA are both viable treatment options for isolated unicompartmental osteoarthritis arthritis. This investigation shows better results for UKA in several outcome domains by directly comparing the two treatments. The risk of revision surgery for TKA, however, was lower. This information should be available to patients when selecting treatment options as part of the shared decision-making process.