Nothing will stop Delaney Unger from her passion for dancing. When Delaney was 11 years old, doctors diagnosed her with a rare bone cancer, and had to have part of her leg amputated. Doctors then performed a rare surgery called Rotationplasty at Stony Brook Medical Center in New York. Her ankle joint now serves as her knee so she's able to attach a prosthetic leg. InsideEdition.com's Leigh Scheps (http://twitter.com/LeighTVReporter) has more.