Christopher M. LaPrade, MD

A 28-year-old male soccer player presented with acute onset of left knee pain and swelling following an awkward twisting motion during a game.

A 45-year-old man presented with a 6-month history of posteromedial right knee pain and swelling after a twisting injury to his knee in the gym.

A 24-year-old male professional soccer player sustained an acute twisting injury during match play. He presented 1 week later and reported having acute right knee swelling and the inability to bear weight on his right lower extremity.

An estimated 27 million U.S. youths participate in team sports and approximately 60 million youths participate in some type of organized athletics.