Christella was at school when the Haiti earthquake struck in January 2010.
The building she was in collapsed, killing many of her classmates and crushing her left leg. After her leg was amputated, Handicap Internationa's team found her and gave her physiotherapy. She was then fitted with a prosthesis and started learning to walk again.
Five years later, Handicap International is still helping Christella and other Haiti earthquake victims regain the independence.
Watch Christella tell her story