The comparison effects of intra-articular injection of Platelet Rich Plasma (PRP), Plasma Rich in Growth Factor (PRGF), Hyaluronic Acid (HA), and ozone in knee osteoarthritis; a one year randomized clinical trial

Table 4 Comparison of post injection adverse effects between four groups

	PRP	PGRF	HA	Ozone	P	Test
Post injection complications	0.32	0.41	0.24	0.43	0.56	Kruskal-Wallis

ISSN: 1471-2474