Table 3. Change in Pain Scores.

Pain scores	Hyaluronic acid (N=20)	Etanercept (N=19)	p value
VAS
1 wk	4.7±2.6	3.0±1.5	0.03
2 wks	4.6±1.9	2.8±1.2	0.015
4 wks	5.8±2.5	4.2±2.0	0.054
WOMAC (4 wks)
Pain	11.3±3.2	8.2±3.1	0.040
Stiffness	5.5±1.9	4.5±2.0	0.040
Physical function	33.6±11.0	29.3±10.0	0.035
Total	50.4±11.1	42.0±7.0	0.038

VAS, visual analogue score; WOMAC, Western Ontario and McMaster Universities Osteoarthritis Index.

All data are the mean±standard error of the mean. N=total number of patients in the group.