摘要：The aim of this study was to evaluate the effect of soft tissues in measuring thoracic kyphosis by flexible ruler through placement on the body and on X-Ray and also comparing the results with the Cobb method. The number ofsubjects formed 18 persons. The result of this study showed, high validity between measurements with a flexible curve on the body and on X-ray and the Cobb method, and also reported a high correlation between measurement with flexible curve on body and on X-Ray. The comparison of the three methods in terms of mean; there was no considerable difference between the result of flexible curve on body and on X-Ray and also between measurement with the flexible curve on X-Ray and Cobb method. According to the finding of this study, can be reported; the flexible curve has a high validity in compared with X-ray and soft tissues of the spine have no effect on the measurement by flexible ruler.
