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 2

Baseline VAS, OKS, and WOMAC scores of the intervention groups.

Groups	Hypertonic saline	Ozone + hypertonic saline	value
Type of questionnaires	Mean ± SD	Mean ± SD
VAS	7.6 ± 2	7.2 + 2.8	0.57
OKS	22.67 ± 9.46	20 ± 7.33	0.36
WOMAC
Pain	10.94 ± 2.73	10.85 ± 3.34	0.93
Stiffness	4.05 ± 1.84	3.20 ± 1.72	0.62
Function	36.61 ± 8.69	37.21 ± 42.35	0.29
Total score	51.88 ± 9.88	51.28 ± 12.56	0.88

VAS, Visual Analog Scale; OKS, Oxford Knee Scale; WOMAC, Western Ontario McMaster University Osteoarthritis Index.