Bone growth and mineralisation in children aged 4 to 10 years.

The relationships between bone width and mineral content and age, sex, height and weight were studied in 420 children aged 4-10 years living in Cambridge using single photon absorptiometry. The relationship of bone width with bone mineral content was significantly different between the sexes after adjusting for differences in body size. In addition, bone width in boys was found to be greater for a given height and weight; changes in weight had a greater effect on bone width in boys than in girls. Prediction equations for bone width and mineral content based on height and weight are given, which should enhance the application of single photon absorptiometry in clinical practice.