• A 15-year-old boy had normal growth until age 7 years and decreased growth velocity thereafter. His upper segment/lower segment (U/L) ratio was 0.8. Anterior pituitary function was normal. Roentgenograms revealed characteristic findings of spondyloepiphysial dysplasia tarda (SDT). The sitting height measurement or U/L segment ratio is important in identifying this condition. This condition should be considered in the differential diagnosis of short stature in males.
(Am J Dis Child 129:1069-1071, 1975)
Borut D, Kogut MD. Short Stature in an Adolescent Due to Spondyloepiphysial Dysplasia Tarda. Am J Dis Child. 1975;129(9):1069–1071. doi:10.1001/archpedi.1975.02120460053013