This clinical study evaluates the long-term, ten-year clinical and functional outcomes of patients who underwent arthroscopic repair of osteochondral lesions of the talus (OLT) using the autologous matrix-induced chondrogenesis (AMIC) technique. Conducted at the IRCCS Ospedale Galeazzi Sant'Ambrogio in Milan, the research addresses a critical gap in current medical literature. While the AMIC procedure is widely utilized to treat these challenging lesions, consolidated very long-term data at the ten-year mark remains scarce. Consequently, this study aims to verify whether the positive clinical benefits previously observed in the short and medium term remain stable over time or if they undergo a significant deterioration. The project will span a total duration of six months, analyzing a sample size of approximately 40 patients who received this specific treatment between April 2013 and April 2016.