Ackerman IN, Soh SE, Harris IA, et al. - In the present study, the researchers sought to assess the psychometric properties of the 12-item Hip disability and Osteoarthritis Outcome Score (HOOS-12) and Knee injury and Osteoarthritis Outcome Score (KOOS-12) for use in assessing outcomes after joint replacement for osteoarthritis. For this analysis, patient-reported outcomes data obtained by the Australian Orthopaedic Association National Joint Replacement Registry were used. For 3,023 patients undergoing primary total hip replacement and 4,010 patients undergoing primary total knee replacement, baseline HOOS-12 and KOOS-12 data were available. Although ceiling effects may limit monitoring of postoperative improvement, the HOOS-12 and KOOS-12 have good psychometric properties for capturing joint replacement outcomes including excellent responsiveness.