title: Imaging of the postoperative knee.
abstract: On sagittal images after anterior cruciate ligament (ACL) reconstructions, the femoral tunnel aperture should be at the junction of the line drawn along the posterior femoral cortex and the line drawn along the roof of the intercondylar notch (Bluemensaat line). The tibial tunnel aperture should be in the anterior portion of the second third, i.e. anterior aspect of the middle of the tibial epiphysis. An inaccurate placement of the femoral tunnel affects the graft isometry. A tibial tunnel too anteriorly placed results in intercondylar notch roof impingement. After meniscus surgery, first-line MRI is often sufficient to diagnose new tears; however, sometimes it is necessary to perform CT arthrography or MR arthrography. Surgical cartilage repair is evaluated based on articular congruity and on the appearance of the subchondral bone.
authors.affiliation: Department of medical imaging, Carémeau hospital, university hospital of Nîmes, 4, rue du Professeur-Robert-Debré, 30029 Nîmes, France. Electronic address: pierre.vialaa@gmail.com.
authors.forename: P
authors.initials: P
authors.lastname: Viala
authors.affiliation: Department of orthopedic surgery, Carémeau hospital, 4, rue du Professeur-Robert-Debré, 30029 Nîmes, France.
authors.forename: P
authors.initials: P
authors.lastname: Marchand
authors.affiliation: Department of imaging-musculoskeletal system, université catholique de Louvain, university hospital Saint-Luc, 10, avenue Hippocrate, 1200 Bruxelles, Belgium.
authors.forename: F
authors.initials: F
authors.lastname: Lecouvet
authors.affiliation: Department of medical imaging, Lapeyronie hospital, university hospital of Montpellier, 371, avenue Gaston-Giraud, 34295 Montpellier cedex 5, France.
authors.forename: C
authors.initials: C
authors.lastname: Cyteval
authors.affiliation: Department of medical imaging, Carémeau hospital, university hospital of Nîmes, 4, rue du Professeur-Robert-Debré, 30029 Nîmes, France.
authors.forename: J P
authors.initials: JP
authors.lastname: Beregi
authors.affiliation: Department of medical imaging, Carémeau hospital, university hospital of Nîmes, 4, rue du Professeur-Robert-Debré, 30029 Nîmes, France.
authors.forename: A
authors.initials: A
authors.lastname: Larbi
mesh_terms: D059549:Anterior Cruciate Ligament Reconstruction / Q000009:adverse effects / Q000379:methods; D054544:Arthroplasty, Subchondral; D016025:Bone Transplantation; D050376:Bone-Patellar Tendon-Bone Grafting; D002356:Cartilage / Q000637:transplantation; D002358:Cartilage, Articular / Q000000981:diagnostic imaging / Q000293:injuries / Q000601:surgery; D005355:Fibrosis / Q000000981:diagnostic imaging; D050724:Fractures, Cartilage / Q000000981:diagnostic imaging / Q000601:surgery; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery*; D008592:Menisci, Tibial / Q000000981:diagnostic imaging / Q000601:surgery; D011183:Postoperative Complications / Q000000981:diagnostic imaging; D013710:Tendons / Q000637:transplantation
keywords: Knee; Ligament; MRI; Meniscus; Postoperative