其他摘要:Background and Aims Musculoskeletal Disorders are prevalent in construction workers in comparison to other working groups. This study was done to determine the prevalence of musculoskeletal disorders in four construction sites. Methods This study which has been done in Orumieh city in first six month grade of 1385 is a descriptive-analytical and cross-sectional study. For 89 construction workers questionnaires were completed. Nordic standard questionnaire was used in study. Results The higher (50.6%) and lowest (1.1%) prevalence rate were in low back and foot, respectively .Following low back, wrist (43.8%) and shoulder (40.4%) have the highest prevalence rate. There is a significant relation among neck, wrist, low back and knee with age and experience of workers (P with age. Conclusion The results of this study reveal that the prevalence rate of Musculoskeletal Disorders are high in construction workers. Probably, the high prevalence of these disorders is due to non neutral postures, repetitive motions, manual material handling and the weight of used tools and objects . Therefore, ergonomics interventions in order to correction of awkward working posture, reducing working time and handled materials and tools weights modification in order to decreasing these disorders prevalence are suggested.