Table 3. Association between S-PRP and M-PRP groups according to WOMAC score .

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

 WOMAC: Western Ontario and McMaster Universities Osteoarthritis Index

WOMAC Assessment Period	Group	N	Mean	Mean Difference	P-Value
Pre-injection	S-PRP	34	55.53	0.663	0.286
	M-PRP	30	54.87
6 weeks	S-PRP	34	45.26	- 0.069	0.920
	M-PRP	30	45.33
3 months	S-PRP	34	35.15	- 0.953	0.118
	M-PRP	30	36.10
6 months	S-PRP	34	26.82	2.157	0.208
	M-PRP	30	24.67