title: Radiographic assessment of instability of the knee due to rupture of the anterior cruciate ligament. A quadriceps-contraction technique.
authors.forename: P A
authors.initials: PA
authors.lastname: Torzilli
mesh_terms: D016118:Anterior Cruciate Ligament / Q000000981:diagnostic imaging; D000070598:Anterior Cruciate Ligament Injuries; D006801:Humans; D007593:Joint Instability / Q000000981:diagnostic imaging*; D007719:Knee Joint / Q000000981:diagnostic imaging*; D009119:Muscle Contraction; D011859:Radiography; D012421:Rupture