Abstract
This study establishes a method of determination of the external vertebral column on a scientifically exact reproducible basis, offering a modified measuring method which enables other investigators to prove the change of the profile of external vertebral column in different age groups as well as to prove individual changes in the external curvature of vertebral column with growth. Using this method of measuring and proving the results by the given mathematical methods it is possible to give the range of variation of the external curvature of vertebral column for each age and sex. As a working sample for the above mentioned method the question of age and sex differences during puberty in an European population has been studied.