Determination of “Normal” Thoracic Kyphosis: A Roentgenographic Study of 121 “Normal” Children

Abstract

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°–50° was determined. There was no difference between the various age subgroups or between genders.