Table 2. Comparison of VAS score between single PRP injection versus multiple PRP injection among the study participants.

S-PRP group: Participants receiving a single intra-articular platelet-rich plasma injection; M-PRP group: Participants receiving two intra-articular platelet-rich plasma injections

VAS: visual analogue scale for pain; PRP: platelet-rich plasma

VAS Assessment Period	Group	Number	Mean	Mean Difference	P-Value
Pre-injection	S-PRP	34	6.68	-1.157	0.0001
	M-PRP	30	7.83
6 weeks	S-PRP	34	5.29	-0.74	0.0002
	M-PRP	30	6.03
3 months	S-PRP	34	3.85	-0.85	0.0001
	M-PRP	30	4.7
6 months	S-PRP	34	2.68	-0.61	0.088
	M-PRP	30	2.07