• Antonio Oliviero, Della PortaGiovannaGDepartment of Medicine, Surgery and Dentistry, University of Salerno, Via S. Allende, Baronissi, SA, Italy., Giuseppe M Peretti, and Nicola Maffulli.
• Department of Trauma and Orthopaedic Surgery, Azienda Ospedaliera Universitaria, San Giovanni di Dio e Ruggi D'Aragona, Via San Leonardo, Salerno, Italy.
• Br. Med. Bull. 2019 Jun 19; 130 (1): 137147137-147.

BackgroundOsteoarthritis (OA) is the most orthopedic condition. The pattern of gene expression and the transcription factors that exert control of chondrogenesis have been extensively studied.Sources Of DataA systematic search (up to July 2018) of articles assessing the role of microRNA (miRNA) in physiopathology, diagnosis and therapy of OA was performed, with the purpose of giving a critical perspective of the possibilities for diagnostic and therapeutic use of miRNA in the management of OA.Areas Of AgreementmiRNAs are small noncoding RNAs that can regulate gene expression in human cells. miRNAs can be expressed in a different fashion in osteoarthritic compared to nonosteoarthritic cartilage.Areas Of ControversyThe mechanisms that produce alteration of gene expression in OA are still not completely understood. miRNAs may be involved in the diagnosis of OA as well as in its treatment.Growing PointsThere are complex interactions between miRNAs and their multiple target genes. These interactions may be important in gene regulation and the control of homeostatic pathways in OA.Areas Timely For Developing ResearchmiRNA could be useful for diagnostic or management purposes, but the issue of delivery of miRNA targeting agents needs to be overcome before miRNA can be applied in clinical practice.© The Author(s) 2019. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

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