Platelet-rich plasma(PRP)is a blood-derived product that is isolated from venous blood and is rich in platelets and growth factors.PRP is involved in delaying or repairing meniscus injury and reducing knee pain by promoting the regeneration of meniscus cells,increasing collagen synthesis,regulating the internal microenvironment of damaged meniscus,etc.This paper aims to summarize the charac-teristics of meniscus injury,the preparation and classification of PRP,the mechanism of action of PRP in meniscus injury repair and the current situation and shortcomings of its application in meniscus injury,and propose the development direction of PRP in promoting menis-cus repair in the future,so as to be a better reference for clinical practice.
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