Oral Administration of Polymer Hyaluronic Acid Alleviates Symptoms of Knee Osteoarthritis: A Double-Blind, Placebo-Controlled Study over a 12-Month Period

Table 3

Kellgren and Lawrence grade before and 12 months after administration.

		Time (month)
		0	12
HA	Grade 2	9	8
	Grade 3	9	10
Placebo	Grade 2	9	9
	Grade 3	11	11

Numbers of subjects being Kellgren and Lawrence grade are shown.