One teen has defied all odds as a dancer with a prosthetic leg. When Gabi Shull removes her prosthetic, her leg is backwards. The Missouri native traveled to Houston to perform in a fundraiser for children battling cancer this past summer. Shull took the stage and wowed the crowd and inspired everyone by taking a giant step forward. She has loved to dance from time she was 3 years old. In 2010, an MRI revealed a tumor and she was diagnosed with osteosarcoma a rare form of cancer. #InsideEdition