• Yongyut Siripakarn, Sunyarn Niempoog, and Krit Boontanapibul.
• Department of Orthoprdic Surgery, Faculty of Medicine, Thammasart University, Pathumtani, Thailand. yongsiripakarn@gmail.com
• J Med Assoc Thai. 2013 Jan 1; 96 (1): 52-7.

ObjectiveTo study the reliability and reproducibility ofdistal radius fracture classification in plain radiographs.Material And MethodNinety-eight displaced distal radius fractures radiographs were classified in four groups ofobservers. The first group consisted of one senior orthopedics staff and two hand-orthopedic surgeons (with experience ranging from ten to thirty years). The first group conducted and evaluated the research altogether This first group was also regarded as standard adjustment. The three other groups comprisedfourth year orthopedics residents, using AO, Frykman, and Fernandez classification systems with six weeks intervals. The results were processed with kappa statistics. The Research to be approached by Thammasat Ethic Committee.ResultsThe highest kappa coefficient in interobserver agreement was determined in Fernandez classification (0.415), AO classification (0.342), and Frykman classification (0.280). When intraobserver were evaluated, Fernandez classification had a highest mean kappa value (0.343). Then Frykman classification (0.310) and AO classification (0.292) followed. Likewise, the classification, of which each of senior orthopedics residents evaluated most resemble to standard adjustment, was Fernandez classification with a mean of 62.34%.ConclusionFernandez classification provided satisfactory outcome comparing to standard adjustment and gave a highest inter and intraobserver agreement. Nevertheless, none of the classification systems examined in the present study has achieved an excellent outcome.

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