Case report: Free autologous costal cartilage transplantation for osteochondral lesions of the talus: three cases with 2–5 years follow-up - Du, Dajiang; Chen, Jiewei; Zheng, Che; Gao, Yun; Xue, Mengxin; Zheng, Kaiwen; Xu, Peijun; Zhu, Jinyu; Zhang, Changqing (Frontiers in Bioengineering and Biotechnology, 2025)