The thesaurus might equate "disabled" with synonyms like "useless" and "mutilated," but ground-breaking runner Aimee Mullins is out to redefine the word. Defying these associations, she shows how adversity -- in her case, being born without shinbones -- actually opens the door for human potential.

Aimee Mulllins defies conventional description, both on and off the track. As an athlete, she holds world records in a number of track events. She is a model, actress and speaker. The fact that she is a bilateral below-the-knee amputee, born without fibula bones in both shins, has not hindered her success in any way. In fact, Aimee has used it as a springboard to an illustrious, varied career that defines the idea of 'no limits'!