title: Reliability of the Lagrange and Rigault classification system of supracondylar humerus extension fractures in children.
abstract: BACKGROUND
  The Lagrange and Rigault classification was designed to describe extension-type supracondylar fractures of the humerus. It can also help in treatment decision-making.
  
  
  OBJECTIVE
  The reliability of this classification has not yet been proven. The goal of this study was to assess this system's intra- and interobserver reliability.
  
  
  METHODS
  One hundred supracondylar fracture radiographs were randomly retrieved and reviewed by five different observers on two occasions in a different order. The kappa index was used to calculate the intra- and interobserver reliability.
  
  
  RESULTS
  Intraobserver reliability was 0.76 and interobserver reliability was 0.69.
  
  
  CONCLUSIONS
  The study shows good intra- and interobserver reliability. The Lagrange and Rigault classification has similar reliability to other supracondylar fracture classifications.
authors.affiliation: Brabois Children's Hospital, Nancy Teaching Medical Center, Pediatric Orthopaedic Surgery Department, rue du Morvan, 54500 Vandœuvre-lès-Nancy, France. digheldria@gmail.com
authors.forename: A
authors.initials: A
authors.lastname: de Gheldere
authors.forename: M
authors.initials: M
authors.lastname: Legname
authors.forename: M
authors.initials: M
authors.lastname: Leyder
authors.forename: G
authors.initials: G
authors.lastname: Mezzadri
authors.forename: P-L
authors.initials: PL
authors.lastname: Docquier
authors.forename: P
authors.initials: P
authors.lastname: Lascombes
mesh_terms: D002648:Child; D006801:Humans; D006810:Humeral Fractures / Q000145:classification* / Q000000981:diagnostic imaging; D015588:Observer Variation; D011859:Radiography; D015203:Reproducibility of Results; D012189:Retrospective Studies; D000092464:Elbow Injuries