An avulsion fracture happens when a fragment of the kneecap detaches because of an “excessive pull of the quadriceps tendon or patellar ligament,” according to the Cureus Journal of Medical ...

Livvy Dunne is bouncing back. The LSU gymnastics star was optimistic about her return to the sport after suffering an avulsion fracture in her kneecap on March 6, informing PEOPLE exclusively of ...