article_snippet: Chen Tuanzhi was born with congenital genu recurvatum disease, or 'backward-bending knee,' which left her unable to walk or lie down straight.
article_snippet: Chen Tuanzhi has serious congenital gen recurvatum disease which left Chen Tuanzhi legs pointing in an L-shape .
article_snippet: Chen Tuanzhi was born with congenital genu recurvatum disease which caused Chen Tuanzhi knees to bend backwards.
article_snippet: Proud moment: Chen Tuanzhi, who was born with a serious deformity that left Chen Tuanzhi unable to walk, takes Chen Tuanzhi first steps in front of delighted onlookers .
highlights_snippet: Chen Tuanzhi, 26, was born with 'backward-bending knee' condition .
  