Swimmer Levana Hanson had a Paralympic medal in her sights. That is, until she was called for a placement test in 2012.
The Paralympic classification is designed to make competition between athletes fair. They will be assessed by trained classifiers and their medical records should be reviewed so that they can compete against people with the same level of proficiency. But some athletes think the system is unfair.
Levana says her hopes for fame were dashed when she was reclassified because a stump was viewed as 1.5mm too long, a decision that was later reversed.
Produced and edited by Rahil Sheikh, BBC Panorama
Paralympics: Unfair Games? Will air on BBC One and BBC iPlayer at 7:30 p.m.
