Primary outcome
Knee injury, Osteoarthritis, pain
OSTEOARTHRITIS
The primary outcome was the knee function at postoperative 6 and 12 months using the Knee injury and Osteoarthritis Outcome Score (KOOS) and the performance-based tests. The KOOS is a patient-reported outcome questionnaire to evaluate pain, symptom, activity daily living, sport, and quality of life after TKA. The performance-based tests used in this study were 30-s chair stand test (30CST), 40-m fast paced walk test (40FPWT), and 3-m timed up and go test (3TUG).