[Retracted] Effect of Intraarticular Injection of Platelet-Rich Plasma on Knee Osteoarthritis: A Multicenter Retrospective Clinical Study

Table 2

Comparison of the VAS score and WOMAC score in the PRP and control groups.

Time point		PRP group		Control group
		VAS	WOMAC	VAS	WOMAC
T0	Preinjection	5.2 ± 1.8	30.8 ± 15.4	5.4 ± 1.4	31.7 ± 12.3
T1	3 days after injection	2.8 ± 1.3	14.9 ± 6.1	4.9 ± 1.5	28.3 ± 11.2
T2	1 month after injection	2.3 ± 1.3	14.5 ± 6.5	4.6 ± 1.2	29.3 ± 10.9
T3	3 months after injection	2.4 ± 1.2	13.9 ± 5.8	4.4 ± 1.6	27.3 ± 12.3