title: Statistical analysis on the concordance of the radiological evaluation of fractures of the distal radius subjected to traction.
abstract: OBJECTIVE
  The objective of this study was to evaluate the current classifications for fractures of the distal extremity of the radius, since the classifications made using traditional radiographs in anteroposterior and lateral views have been questioned regarding their reproducibility. In the literature, it has been suggested that other options are needed, such as use of preoperative radiographs on fractures of the distal radius subjected to traction, with stratification by the evaluators. The aim was to demonstrate which classification systems present better statistical reliability.
  
  
  RESULTS
  In the Universal classification, the results from the third-year resident group (R3) and from the group of more experienced evaluators (Staff) presented excellent correlation, with a statistically significant p-value (p < 0.05). Neither of the groups presented a statistically significant result through the Frykman classification. In the AO classification, there were high correlations in the R3 and Staff groups (respectively 0.950 and 0.800), with p-values lower than 0.05 (respectively <0.001 and 0.003).
  
  
  CONCLUSIONS
  It can be concluded that radiographs performed under traction showed good concordance in the Staff group and in the R3 group, and that this is a good tactic for radiographic evaluations of fractures of the distal extremity of the radius.
authors.affiliation: Hospital Central da Polícia Militar do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
authors.forename: Daniel Gonçalves
authors.initials: DG
authors.lastname: Machado
authors.affiliation: Hospital Central da Polícia Militar do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
authors.forename: Sergio Auto
authors.initials: SA
authors.lastname: da Cruz Cerqueira
authors.affiliation: Hospital Central da Polícia Militar do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
authors.forename: Alexandre Fernandes
authors.initials: AF
authors.lastname: de Lima
authors.affiliation: Hospital Central da Polícia Militar do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
authors.forename: Marcelo Bezerra
authors.initials: MB
authors.lastname: de Mathias
authors.affiliation: Hospital Central da Polícia Militar do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
authors.forename: José Paulo Gabbi
authors.initials: JP
authors.lastname: Aramburu
authors.affiliation: Hospital Central da Polícia Militar do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
authors.forename: Rodrigo Ribeiro Pinho
authors.initials: RR
authors.lastname: Rodarte
keywords: Fractures of the radius; Radiography; Traction