Upper and Lower Body Segment Ratios from Birth to 18 years in Children from Western Maharashtra
The Indian Journal of Pediatrics(2019)
Abstract
Objectives To assess the upper body segment (US), lower body segment (LS) and US:LS ratio for children from birth to 18 y of age and to compare these data with other US:LS ratio norms from previously reported studies. Methods A cross-sectional, observational study was conducted in children [birth to 18 y; n = 5454 children (3158 boys)] residing in Pune city, Western India, from December 2015 through June 2017, to evaluate the US, LS and the US:LS ratio. Results The mean US:LS ratio in boys at birth was 1.45; at one year of age it was 1.35 that decreased to 0.89 at 14 y. The nadir for the US:LS ratio in boys was reached at 14 y of age (0.89). In girls, the mean US:LS ratio at birth was 1.44, at one year of age it was 1.35 that decreased to 0.89 at 12 y. The nadir for the US:LS ratio in girls was reached at 12 y of age (0.89). From 12 to 18 y the US:LS ratio was fairly constant (for girls: 0.89, for boys: 0.9). On plotting the US and LS against the age in present study population, the US and LS curves crossed each other (US:LS = 1) at 7 to 8 y in boys and at 6 to 7 y in girls. Conclusions The authors describe data for upper and lower body segments and their ratio in boys and girls from birth to 18 y in children from western Maharashtra. These data may help in the diagnosis of disproportionate short stature in children.
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Key words
Children,Lower segment,Upper segment,Upper and lower segment ratio
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