title: Simplified diagnostic algorithm for Lauge-Hansen classification of ankle injuries.
abstract: Ankle injuries occur in a predictable sequence, allowing a logical understanding of their classification once the injury mechanism is recognized. The Lauge-Hansen classification system was developed on the basis of the mechanism of trauma and is useful for guiding treatment. Three radiographic views of the ankle (anteroposterior, mortise, and lateral) are necessary to classify an injury with the Lauge-Hansen system. Two additional criteria are also necessary: the position of the foot at the time of injury and the direction of the deforming force. Because understanding the mechanism of trauma is fundamental to classifying the injury, three-dimensional movies were assembled for each classification, showing the sequence of ligament rupture and bone fractures that occurs with each type of traumatic mechanism. Supplemental material available at http://radiographics.rsna.org/lookup/suppl/doi:10.1148/rg.322115017/-/DC1.
authors.affiliation: Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, 75 Francis St, Boston, MA 02115, USA. hokanobo@partners.org
authors.forename: Heitor
authors.initials: H
authors.lastname: Okanobo
authors.forename: Bharti
authors.initials: B
authors.lastname: Khurana
authors.forename: Scott
authors.initials: S
authors.lastname: Sheehan
authors.forename: Alejandra
authors.initials: A
authors.lastname: Duran-Mendicuti
authors.forename: Afshin
authors.initials: A
authors.lastname: Arianjam
authors.forename: Stephen
authors.initials: S
authors.lastname: Ledbetter
mesh_terms: D000465:Algorithms; D016512:Ankle Injuries / Q000145:classification* / Q000175:diagnosis* / Q000000981:diagnostic imaging; D005360:Fibula / Q000293:injuries; D050723:Fractures, Bone / Q000145:classification* / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006801:Humans; D017844:Lateral Ligament, Ankle / Q000000981:diagnostic imaging / Q000293:injuries; D008023:Ligaments, Articular / Q000000981:diagnostic imaging / Q000293:injuries; D008954:Models, Biological; D011403:Pronation; D011859:Radiography; D012399:Rotation; D012421:Rupture / Q000000981:diagnostic imaging; D013484:Supination; D013639:Tarsal Bones / Q000293:injuries*