@CNN: 13-year-old Delaney Unger opted for an unusual cancer treatment so she could continue her love of dance. Her left ankle now faces backward and serves as a knee, allowing natural joint flexibility https://t.co/Y2fOZepTms https://t.co/3ywaZeeHbW

@CNN: 13-year-old Delaney Unger opted for an unusual cancer treatment so she could continue her love of dance. Her left ankle now faces backward and serves as a knee, allowing natural joint flexibility https://t.co/Y2fOZepTms https://t.co/3ywaZeeHbW