Determination of normal thoracic kyphosis: A roentgenographic study of 121 normal children

The purpose of this prospective study was to determine the range of normalcy in the radiologic measurement of thoracic kyphosis in children by using a standardized position and full-length radiograph in 121 normal children. Using +/- two standard deviations from the mean as the definition of normal, a range of 20 degrees -50 degrees was determined. There was no difference between the various age subgroups or between genders.