title: Are high-resolution ultrasonographic signs of disc displacement valid?
abstract: OBJECTIVE
  The study goal was to define the positive predictive value (PPV) for the diagnosis of disc displacement of the temporomandibular joint (TMJ) with the use of high-resolution ultrasonography (HR-US).
  
  
  METHODS
  The HR-US reports for 29 patients aged 19 to 62 years who had a prospective clinical diagnosis of TMJ internal derangement were correlated with magnetic resonance results.
  
  
  RESULTS
  For the prospective HR-US interpretation, the PPV for disc displacement was 97% at the closed-mouth position and 88% at the maximum-mouth opening position.
  
  
  CONCLUSIONS
  The PPV for the HR-US diagnosis of disc displacement is high.
authors.affiliation: Department of Oral and Maxillofacial Surgery, University of Innsbruck, Innsbruck, Austria. Rudiger_Emshoff@hotmail.com
authors.forename: Rüdiger
authors.initials: R
authors.lastname: Emshoff
authors.forename: Siegfried
authors.initials: S
authors.lastname: Jank
authors.forename: Ansgar
authors.initials: A
authors.lastname: Rudisch
authors.forename: Gerd
authors.initials: G
authors.lastname: Bodner
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D004204:Joint Dislocations / Q000000981:diagnostic imaging*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D011446:Prospective Studies; D013705:Temporomandibular Joint Disorders / Q000000981:diagnostic imaging*; D014463:Ultrasonography