A recent study published in BMC Musculoskeletal Disorders by Palazzo et al. examined predictors and preoperative determinants of satisfaction on year after total hip arthroplasty (THA). Before surgery, patients completed a total hip replacement expectations survey (THR survey). One year after surgery, patients (n=123) completed a questionnaire on expectation fulfilment (THR survey), satisfaction, functional outcome (WOMAC), and health-related quality of life (SF-12). Univariate and multivariate analyses were performed. Preoperative predictors of satisfaction were good mental wellbeing and optimistic surgeons expectation. The main postoperative association with satisfaction was the fulfilment of patient expectations. Expectation fulfilment could be predicted predicted preoperatively by good mental wellbeing, young age and good physical function. Postoperative determinants of expectation fulfilment included functional outcome and pain relief.