Moderate relationship between function and satisfaction of total hip arthroplasty patients: a cross sectional study.

Abstract

Patient satisfaction regarding their hip replacement is often assumed to be directly linked to functional outcomes. We led this study to answer 2 questions: (1) what is the level of patient satisfaction, function, and quality of life after primary total hip replacement (THR); and (2) what is the relationship between patient satisfaction and functional and quality of life PROMs after THR? We led a retrospective study using our institutional registry of prospectively and consecutively collected data on patients after primary THR undertaken between 2004 and 2017. We included 6710 patients with a complete 2-year set of follow-up data for Oxford Hip Score (OHS) (for assessing patient's function), EQ-5D (for assessing patient's quality of life) and satisfaction PROM scores. There was a significant improvement in all OHS and EQ-5D scores from preoperative level, and the mean postoperative satisfaction score was 89/100. We found moderate positive correlations between the patients' outcome satisfaction VAS score and OHS (r = 0.665) and EQ-5D (r = 0.554). THR is a successful procedure generating high levels of patient function and satisfaction. Because patients' OHS and EQ-5D scores may be influenced by comorbidities, those scores are of poor predictive value in estimating patient satisfaction, and therefore should not be used as a surrogate to determine the success of the THR procedure.