The developmental age of a child is usually achieved by measuring the age of the bones. Some parents are worried that their children will not grow taller in the future, and want to predict whether they have the potential to grow taller in the future. Of course, some hospitals do not have a growth and development department, so it is necessary to register for pediatric orthopedics or pediatric endocrinology. Because the growth and development of children is related to the development of bones, and also related to the metabolism of hormones, in fact, the so-called bone age measurement is actually through the filming, through the imaging examination, because the bone development process has its own specific image, can determine the current state of the bones. During the development process, the long bones at both ends of the bone are called epiphyses, and if the epiphyses close prematurely, this is when the child stops developing.