title: Anterior cruciate ligament tears: what we already know.
authors: Nicola
authors: N
authors: Maffulli
authors: Mattia
authors: M
authors: Loppini
authors: John B
authors: JB
authors: King
mesh_terms: D000070598:Anterior Cruciate Ligament Injuries; D006801:Humans; D007718:Knee Injuries / Q000628:therapy*