Particulate cartilage and platelet-rich plasma treatment for knee chondral defects in sheep. - Alcaide-Ruggiero L; Molina-Hernández V; Morgaz J; Fernández-Sarmiento JA; Granados MM; Navarrete-Calvo R; Pérez J; Quirós-Carmona S; Carrillo JM; Cugat R; Domínguez JM (Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2023)