Patient-reported outcomes after total knee replacement: Questionnaire and functional assessment study

Recent studies indicate that although many patients are satisfied with their surgical results after total knee replacement (TKR), there is still concern regarding ongoing levels of pain, limited mobility and differences in the level of satisfaction among patients. Therefore, it is of interest to prospectively evaluate patient-reported outcomes and functional recovery in TKR patients following the completion of at least 6 months post-operative recovery through the application of KOOS, SF-36 and time up, go and 6-minute walk tests. In this study, KOOS Pain scores increased from an average of 45.6 points before surgery to an average of 82.1 points after surgery, while SF-36 physical functioning scores increased from an average of 41.2 points preoperatively to an average of 80.5 points at follow-up (p<0.001). Additionally, functional mobility improved significantly through decreased times on the timed up and go test from 18.4 seconds preoperatively to 10.2 seconds postoperatively (p<0.001) and increased distances walked during the 6-minute walk test from 230.7 meters to 360.8 meters (p<0.001). Furthermore, TKR has led to significant increases in patient satisfaction, functional independence and overall quality of life for TKR patients.