Abstract
Purpose
Total knee arthroplasty (TKA) is one of the most successful surgeries with respect to relieving pain and restoring function of the knee. However, some studies have reported that patients are not always satisfied with their results after TKA. The aim of this study was to determine which factors contribute to patient's satisfaction after TKA.
Methods
We evaluated 69 patients who had undergone 76 primary TKAs between March 2012 and June 2013, and assessed patient- and physician- reported scores using the 2011 Knee Society Scoring System and clinical variables before and after TKAs. We determined the correlation between patient satisfaction and clinical variables.
Results
The mean (SD) pre-operative score was 8.2 (4.9) for symptoms, 11.5 (4.5) for patient's satisfaction, 13.1 (2.2) for patient's expectations, and 35.4 (18.2) for functional activities. The mean (SD) post-operative score was 16.3 (5.0) for symptoms, 20.7 (6.4) for patient's satisfaction, 9.1 (2.3) for patient's expectations, and 47.4 (19.6) for functional activities. We found that physician- reported scores were higher than patient- reported scores, and improvement in patient- reported scores was lower than that of physician- reported scores following TKA. We did not found a correlation between any pre-operative variables including expectation and post-operative satisfaction. Post-operative symptoms (r=0.51, p<0.01) and functions (r=0.39, p<0.01) correlated with post-operative satisfaction. The predictors of patient dissatisfaction after TKA were remaining symptoms and low postoperative activities.
Conclusions
Our study demonstrates that to relieve pain and to restore activities is important for increasing patient satisfaction after TKA. The 2011 Knee Society Scoring System allows surgeons to appreciate differences in the priorities of patients with TKA.
