Objective: Core decompression bone grafting usually is used hip-preserving approach for osteonecrosis of femoral head (ONFH). Platelet-rich plasma (PRP) is an adjuvant therapy, combined with core decompression bone grafting for ONFH. However, it remains controversial. Therefore, its efficacy was systematically evaluated and meta-analysis in this study.Methods: Literature on core decompression bone grafting for ONFH was retrieved in CNKI, Wan Fang, PubMed, Embase, Cochrane Library and Web of Science from inception to March 2021. Review Manager 5.3 software and Stata 12.0 software were used for data synthesis.Results: A total of 10 RCTs were included. The results showed at final follow-up that, Harris hip score was significantly difference in the treatment group, adjuvant therapy with PRP (group A) better than the control group (group B), MD=7.53 [95%CI (5.29,9.77)],P < 0.00001. There was MD=-0.71[95%CI (-0.96, -0.46)], P < 0.00001, of visual analog scale (VAS) of hip pain between the two groups. The excellent and good rate of function of hip was 1.42-fold higher in group A than that in group B, RR=1.42, 95%CI (1.25,1.62), P<0.00001. The progression and total hip arthroplasty were showed improvements, RR=0.37,95%CI (0.21,0.65), P=0.0006 and RR=0.39,95%CI (0.18,0.85), P=0.02, respectively. Begg's and Egger's tests did not indicate publication bias.Conclusion: It was shown that the use of PRP combined with core decompression bone grafting improved the symptoms better than core decompression bone grafting only, and might delay progression and total hip arthroplasty. However, as the study’s limitations, it needed to be fully verified by more large-sample multicenter prospective clinical studies.
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