Jakson Follmann, a survivor of the LaMia airplane crash in Colombia, receives the Copa Sudamericana trophy in Arena Conda stadium before a charity match between Chapecoense and Palmeiras in Chapeco in January. Photograph: Leonardo Benassatto/Anadolu Agency/Getty Images

Jakson Follmann gripped the guide rails and took one painstaking step after another, testing the prosthesis that now fills the space once occupied by (...)