Factors influencing patient satisfaction two to five years after primary total knee arthroplasty.

Between 15% and 20% of primary total knee arthroplasty (TKA) patients have been reported to be dissatisfied with the procedure. With 2 to 5 year follow-up of 768/959 (80%) cruciate-retaining TKAs performed by a single surgeon, we evaluated the prevalence of dissatisfied patients and determined which factors were most related to patient satisfaction. Of the 768 TKAs, 80 were dissatisfied with their procedure (10.4%). Postoperative Knee Society Pain Scores and passive knee flexion were most related to a lack of satisfaction. Age, gender, and BMI did not appear to be related to patient satisfaction. By and large, dissatisfied patients in the current study had not experienced improvements in passive flexion, Pain Scores, or Function Scores when compared to their preoperative state.