Intra-articular platelet-rich plasma injections versus intra-articular corticosteroid injections for symptomatic management of knee osteoarthritis: systematic review and meta-analysis

Table 4 WOMAC Subscale Scores at 6 Months Post-Intervention

WOMAC Subscale Score Reduction
Outcome	Pooled mean difference (95 CI)	P	Heterogeneity
Outcome	Pooled mean difference (95 CI)	P	I² (%)	P
Pain	−2.66 [−4.73, −0.60]	0.01	93	< 0.00001
Stiffness^a	−1.95 [−2.30, − 1.59]	< 0.00001	0	0.78
Physical Function	−5.47 [− 13.80, 2.86]	0.2	97	0.00001

^aKhan et al. (2018) [29] was removed from the analysis due to contributing 91% statistical heterogeneity

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