ارزیابی پایایی درون مشاهده گر و میان مشاهده گر در طبقه بندی یانگ و برگس برای شکستگی های لگن

Background: Determination of interobserver and intraobserver reliability are one of the most important issue in educations with are necessary for validation of classifications. Methods: Radiographies and CT scans of 160 patients were assessed by three orthopedics to determination of the anatomic location of fractures and to determine classification of fractures according to Young and Burgess classification and then the agreement between observers and among each observer was assessed. Results: Pubic rami were the most common anatomic fractures and LC I was the most common fracture type. CT scan was increased significantly the accuracy of diagnosis of fractures of the sacrum and ilium. Interobserver reliability to determination of the fracture type was 0.35 (0.28–0.52) using radiography alone, and was 0.49 (0.44–0.76) using both radiographies and CT scan. The least agreement was observed in types LC II and APC II. Intraobserver reliability in this field were 0.40 (0.31–0.58), 0.41 (0.32–0.51) and 0.44 (0.36–0.55) for three observers using radiographies alone and 0.54 (0.39–0.77), 0.53 (0.42-0.72) and 0.55 (0.46–0.73) respectively using radiographies and CT scans. Conclusion: there were acceptable interobserver and intraobserver reliabilities in Young and Burgess classification and our results approximately were the same as other studies.