title: [Fixed posterior sag position after ACL reconstruction for an apparently "isolated" ACL tear].
abstract: We present the case of a paraglider who suffered a valgus external rotation hyperextension injury of the right knee. The incomplete diagnosis of an isolated anterior cruciate ligament (ACL) intrasubstance tear was made and a reconstruction of the ACL with semitendinosus autograft was performed. The associated lesion of the posterior cruciate ligament (PCL) was overlooked and thus the ACL was fixed in a posterior sag position. This led to activity-related pain without any instability. The patient underwent revision surgery with débridement of the ACL and reconstruction of the PCL with quadriceps tendon.
authors.affiliation: Klinik für Orthopädische Chirurgie und Traumatologie des Bewegungsapparates, Kantonsspital Bruderholz, CH-4101, Bruderholz, Schweiz. michael.hirschmann@ksbh.ch.
authors.forename: M T
authors.initials: MT
authors.lastname: Hirschmann
authors.forename: J
authors.initials: J
authors.lastname: El Rabadi
authors.forename: C
authors.initials: C
authors.lastname: Mueller
authors.forename: N F
authors.initials: NF
authors.lastname: Friederich
mesh_terms: D016118:Anterior Cruciate Ligament / Q000601:surgery*; D000070598:Anterior Cruciate Ligament Injuries; D003646:Debridement / Q000379:methods; D006801:Humans; D007718:Knee Injuries / Q000175:diagnosis / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D009104:Multiple Trauma / Q000601:surgery*; D016119:Posterior Cruciate Ligament / Q000293:injuries* / Q000601:surgery*; D019651:Plastic Surgery Procedures / Q000379:methods*; D016896:Treatment Outcome