The pattern of growth in children with constitutional tall stature from birth to age 9 years. A longitudinal study.

A study was made of the longitudinal growth pattern of 29 girls and 36 boys with constitutional tall stature (CTS) from birth to age 9 years. In these children, all of whom had a normal birth length, there was very rapid growth during the first 4 years of life, following which growth velocity dropped to normal and remained parallel to the 50th percentile. In the 49 subjects for whom actual final height was also obtained there was a very good agreement between this and the final height as predicted by Tanner's method from the height at ages 4 and 8 years. Significant differences were found between the mean maternal, paternal and mid-parental height and the tall stature of their offspring, but there was a very good correlation between the individual patients final height and their parental heights. The findings of this study stress the importance of periodical measurements of length and height in all children during the first few years of life so as to have appropriate data on which to base future considerations of possible therapy.