Turan Serap, Bereket Abdullah, Omar Anjum, Berber Mustafa, Ozen Ahmet, Bekiroglu Nural
Department of Paediatrics, Division of Paediatric Endocrinology, Marmara University, School of Medicine, Istanbul, Turkey.
Acta Paediatr. 2005 Apr;94(4):407-13. doi: 10.1111/j.1651-2227.2005.tb01909.x.
The determination of body proportions is an important part of the clinical evaluation of children with short stature. The upper segment/lower segment ratio (US/LS ratio) and armspan-height difference is commonly used for this purpose. However, reference data are scarce in this respect, and available standards do not include standard deviations for the measurements. We aimed to establish the normal values for upper segment/lower segment ratio and armspan-height difference in Turkish children.
In the present study, height, upper and lower segment, and armspan were measured in 1302 healthy children (3-18 y). The age-related mean and standard deviation curves of the US/LS ratio and armspan-height difference were constructed for each sex.
The mean values of the US/LS ratio in boys were decreased from 1.108 at 3 y to 0.984 at 10 y. The nadir of the US/LS ratio (0.922) was reached at age 15 y. In girls, the mean value of the US/LS ratio gradually decreased to less than 1 at 9 y of age (1 y earlier than in boys). The nadir of the US/LS ratio (0.946) was reached at age 13 y in girls (2 y earlier than in boys). Armspan was shorter than height as expected in younger ages, but became slightly longer at around age 12 in girls and boys. Unlike boys, the armspan-height difference did not change much after puberty in girls.
US/LS ratio and armspan-height difference are practical parameters and easy to perform in any setting. We hope that these standards will aid clinicians in the evaluation of children with short stature.
确定身体比例是矮小儿童临床评估的重要组成部分。为此通常使用上半身/下半身比例（US/LS比例）和臂展-身高差值。然而，这方面的参考数据稀缺，现有标准未包括测量值的标准差。我们旨在确定土耳其儿童上半身/下半身比例和臂展-身高差值的正常值。
在本研究中，对1302名健康儿童（3 - 18岁）测量了身高、上半身和下半身以及臂展。为每个性别构建了US/LS比例和臂展-身高差值与年龄相关的均值和标准差曲线。
男孩的US/LS比例均值从3岁时的1.108降至10岁时的0.984。15岁时达到US/LS比例最低点（0.922）。女孩方面，US/LS比例均值在9岁时逐渐降至小于1（比男孩早1年）。女孩在13岁时达到US/LS比例最低点（0.946）（比男孩早2年）。正如预期的那样，在较年幼时臂展比身高短，但在女孩和男孩12岁左右时臂展开始略长于身高。与男孩不同，女孩青春期后臂展-身高差值变化不大。
US/LS比例和臂展-身高差值是实用参数，在任何环境下都易于操作。我们希望这些标准将有助于临床医生评估矮小儿童。
