Abstract
[Purpose] This study investigated the effect of improvement of knee joint and general body function on patient satisfaction after total knee arthroplasty (TKA). [Subjects and Methods] Fifty-seven subjects who underwent TKA and had follow-up at 1 and 2 years postoperatively were recruited for this study. Patient satisfaction, knee extension strength, maximum knee flexion and extension angles, the Timed Up and Go test, and the Sit-to-Stand-5 test were evaluated, and the changes in scores between 1 and 2 years postoperatively were calculated. We divided subjects into a group with a decrease in satisfaction between 1 and 2 years postoperatively and a group with an increase in satisfaction. We examined the associations of the rate of change in knee and general body functions between the groups. [Results] The results show that the increased satisfaction group had a significantly higher value for the rate of change in knee extension strength. [Conclusion] The change in satisfaction between 1 and 2 years postoperatively was associated with a change in knee extension strength.
