Table 2.  Comparison of knee symptoms and QOL after TKA.

	I group n = 15	R group n = 4	P-value
KOOS Pain	40.6 ± 22.6	8.3 ± 15.9	0.027
KOOS Symptom	34.5 ± 18.9	–6.3 ± 17.1	0.002
KOOS ADL	28.9 ± 23.5	3.3 ± 10.7	0.062
KOOS QOL	32.5 ± 25.2	18.8 ± 17.7	0.411
EQ-5D-5l	0.32 ± 0.19	–0.04 ± 0.27	0.020

TKA patients with preoperative positive CS were divided into an improved (I) group and a remaining (R) group, based on the CS status 3 months after surgery. Scores were compared using the Mann–Whitney U test.