title: A rare but radiographically recognizable cause of an irreducible hip fracture-dislocation.
abstract: Hip dislocations are emergently reduced to decrease the chance of avascular necrosis of the femoral head. However, in some situations, the dislocation may be irreducible by a closed technique. Rarely, the fractured femoral head may become perched on an intact acetabulum, leading to an irreducible fracture-dislocation. This rare type of irreducible fracture-dislocation demonstrates unique physical and associated radiographic findings. These fractures are important to recognize early, as attempts at closed reduction can lead to femoral neck fractures.
authors.affiliation: Department of Diagnostic Radiology, Yale University School of Medicine, New Haven, CT 06520, USA. David.Lawrence@yale.edu
authors.forename: David A
authors.initials: DA
authors.lastname: Lawrence
authors.forename: Edward
authors.initials: E
authors.lastname: Smitaman
authors.forename: Michael
authors.initials: M
authors.lastname: Baumgartner
authors.forename: Andrew
authors.initials: A
authors.lastname: Haims
mesh_terms: D000063:Accidents, Traffic; D000328:Adult; D005260:Female; D005270:Femur Head / Q000000981:diagnostic imaging* / Q000293:injuries*; D006617:Hip Dislocation / Q000000981:diagnostic imaging* / Q000209:etiology*; D006620:Hip Fractures / Q000000981:diagnostic imaging* / Q000209:etiology*; D006801:Humans; D011859:Radiography; D035583:Rare Diseases / Q000150:complications / Q000000981:diagnostic imaging; D014949:Wounds, Nonpenetrating / Q000209:etiology*