title: Free patellar tendon graft for reconstruction of old posterior cruciate ligament ruptures.
mesh_terms: D006801:Humans; D007593:Joint Instability / Q000209:etiology / Q000601:surgery; D007718:Knee Injuries / Q000601:surgery*; D008023:Ligaments, Articular / Q000293:injuries / Q000601:surgery*; D008722:Methods; D013710:Tendons / Q000637:transplantation*