The Efficacy of Ozone Prolotherapy Compared to Intra-Articular Hypertonic Saline Injection in Reducing Pain and Improving the Function of Patients with Knee Osteoarthritis: A Randomized Clinical Trial

Table 3

Comparison of VAS and OKS in both groups.

Scale		Hypertonic saline group	Ozone + hypertonic saline group	value within groups	value between group
VAS (mean ± SD)	Baseline	7.6 ± 2	7.2 + 2.8	<0.001	0.73
	2^nd week	7.4 ± 2.29	7.4 ± 2.29
	4^th week	5.47 ± 1.98	5.73 ± 2.21
OKS	Baseline	22.67 ± 9.46	20 ± 7.33	<0.001	0.42
	2^nd week	20.13 ± 7.94	20.16 ± 7.56
	4^th week	29.67 ± 10.64	26.26 ± 9.02

VAS, Visual Analog Scale; OKS, Oxford Knee Scale.