Table 4 Comparison of post injection adverse effects between four groups

From: 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

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