Influence of fulfilment patient expectations in outcomes after total knee arthroplasty

Compliance with preoperative expectations of patients undergoing total knee arthroplasty (TKA) is related to the degree of satisfaction, but its effect on other outcomes has not been studied. The aim of this study is to determine whether meeting expectations influences clinical, functional and quality of life outcomes at one year after surgery.

The expectations of 183 patients were evaluated through the Hospital for Special Surgery Knee Replacement Expectations Survey. The Visual Analog Scale, Knee Society Score, WOMAC and SF-36 questionnaires were administered preoperatively and at the annual review. Comparisons were made between compliance with expectations and socio-demographic variables, postoperative complications, improvement in the questionnaires and degree of satisfaction.

Patients without postoperative complications were significantly (P<.005) in the group that had fulfilled all their expectations. A statistically significant relationship (P<.001) was also observed between this group and a higher degree of satisfaction. Finally, the fulfillment of all expectations was associated with a greater improvement (P<.001) in the KSS-Function and SF-36 questionnaires.

Compliance with preoperative expectations is related to a greater improvement in functionality and quality of life at one year of the RTA and significantly affects satisfaction. These findings will allow us to adjust expectations to what is really expected from the surgery, in order to avoid poor results and dissatisfaction.