Table 2. Comparison of joint function and C-reactive protein levels among the three experimental groups.

Variable	Group	Before	1 weeks	2 weeks	3 weeks	Sourceb	Post-Hocc
K-WOMAC	Group A	74.1±3.5a	66.9±3.0	50.3±2.2	29.0±2.4	T***
	Group B	74.3±2.7	66.5±2.3	47.5±1.9	29.8±1.7	T×G*
	Group C	73.9±1.9	66.0±2.3	46.7±2.3	28.7±2.3	G*	C•B>B•A
ROM	Group A	86.9±7.7	102.6±5.6	124.1±4.5	134.4±4.6	T***
	Group B	87.1±7.5	105.8±8.0	124.8±3.9	138.1±3.5	T×G
	Group C	88.3±7.0	108.6±6.1	126.4±5.7	140.2±4.4	G**	C•B>B•A
CRP	Group A	3.8±1.3	3.3±1.1	1.8±0.8	0.4±0.1	T***
	Group B	3.5±1.0	2.3±0.6	1.6±0.7	0.5±0.2	T×G***
	Group C	3.9±1.2	2.0±0.6	1.3±0.3	0.3±0.1	G*	C•B>B•A

*p<0.05, **p<0.01, ***p<0.001. ^aMean± SD, ^bRepeated ANOVA, ^cTukey’s test. Group A: low-intensity pulsed ultrasound therapy group, Group B: cryotherapy group, Group C: low-intensity pulsed ultrasound therapy + cryotherapy group, K-WOMAC: Korean Western Ontario and McMaster Universities Arthritis Index, ROM: range of motion, CRP: C-reactive protein, T: Time, T×G: Time×Group, G: Group