Intra-articular injections of sodium hyaluronate (Hyalgan®) in osteoarthritis of the knee. a randomized, controlled, double-blind, multicenter trial in the asian population

Table 2 The VAS pain scales of Placebo and Hyalgan treatment groups on the 50-foot walking test

Week (W)	Hyalgan^® (n = 100) VAS (mm)	Placebo (n = 98) VAS (mm)	p value
Baseline (W0)	47.85 ± 10.76	45.15 ± 9.75	0.066
W25	17.00 ± 14.32	21.53 ± 15.69	0.035*
Change from W0 to W1	9.9 ± 12.33	7.55 ± 8.95	0.127
Change from W0 to W5	24.75 ± 12.66	20.41 ± 15.38	0.026
Change from W0 to W13	27.27 ± 14.97	24.01 ± 16.95	0.076
Change from W0 to W25 (Primary Outcome)	30.85 ± 14.16	23.62 ± 16.38	0.002**

VAS pain scales were shows as mean ± SD.
*P < 0.05, **P < 0.01, indicated significantly different between treatment groups.

ISSN: 1471-2474