Table 3.

The relationship between the mechanical alignment of lower extremities and the changes in the VAS scores during the follow-up period

	The change in the VAS score during study period due to mechanical axis of lower extremity
	Pre-RFA	Post-RFA	First month	Sixth month	12th month	p
Normal knee alignment (n: 21) (mean ± SD)	8.3 ± 0.7	1.4 ± 1.0	2.0 ± 1.9	2.9 ± 1.9	3.6 ± 1.8	0.007*
Varus (n: 26) (mean ± SD)	8.3 ± 0.9	1.9 ± 1.1	2.6 ± 1.4	3.6 ± 1.5	4.8 ± 1.5
Valgus (n: 2) (mean ± SD)	10.0 ± 0.0	2.0 ± 0.0	4.0 ± 0.0	6.0 ± 0.0	8.0 ± 0.0

n = 49 (total number of knees for which the procedure was performed)

SD standard deviation

*One-way analysis of variance (One-way ANOVA test) was performed