Abstract
Introduction
Despite advances in surgical technique and prosthetics there continues to be a number of patients who are dissatisfied with the results of their knee replacement procedure. The outcome after total knee arthroplasty (TKA) has been reported frequently with use of condition-specific measures, but patient satisfaction has not been well studied.
Material and methods
160 patients who received primary total knee arthroplasty (TKA) were evaluated prospectively to evaluate factors that may be associated with patient satisfaction. At minimum one year follow-up all patients were evaluated and completed validated self-report satisfaction questionnaires. Patient, surgeon, implant and process of care variables were assessed along with WOMAC, Oxford Knee and SF-12 scores. Univariate and multivariate analyses were performed to assess for independent factors associated with post-operative satisfaction.
Results
Significant factors associated with post-operative satisfaction include (p<0.05): pre-operative pain and function, presence of comorbidity, post-op complication or stiffness. Age, gender, pre-operative diagnosis, flexion contracture, pre-op range of motion, implant type (fixed vs rotating platform), and surgeon did not significantly affect patient-reported satisfaction (p>0.05). Post-operative function and pain (WOMAC, Oxford Knee Score), comorbidity, and mental status (SF-12 mental) were also highly associated with post-operative satisfaction (p<0.05) at one year post-op.
Discussion and conclusion
The primary drivers of patient satisfaction appear to be related to patient-related factors including magnitude of baseline disability and comorbidity as well as the development of any post-op complication. Surgeon and implant related factors do not appear to have a significant effect on satisfaction. Understanding determinants of satisfaction may assist the surgeon and patient when planning for surgery and setting realistic expectations for post-operative outcome.
