“…Often by passing the in vitro study phase, the pre-clinical implanting of PRF for cartilage repair has been evaluated by several Authors (Table 2). The hemocomponent was tested for the treatment of chondral [62,66,69,70,71,72], osteochondral [53,61,73,74,75,76] or meniscal [67] defects of the knee joint, as well as full-thickness cartilage defects of the ear [77]; the investigated animal models include rabbits [61,62,66,67,69,73,77], pigs [75], dogs [53,70,71,74,76] and horses [72].…”