“哎?我们带孩子做健康体检,怎么医生给开出一张手腕部X光放射检查单啊?”在体检中心,陪同孩子体检的家长们疑惑不解,窃窃私语。面对家长们的困惑,医生指出,手腕部的X光照片是孩子全身骨骼发育状况的缩影图,是反映孩子骨骼发育提前或者落后的依据,也是预测孩子未来身高的重要参考。正常人体骨骼发育,是一个由软骨逐渐钙化,最终形成健壮骨骼的过程。这一过程被称为“骨化”。在胎儿 “Hey? We have children doing a healthy physical examination, how doctors give out a wrist X-ray radiography?” In the medical center, parents who accompany their children’s medical examination puzzled, whispering. Confronted by parents’ confusion, the doctor pointed out that the X-ray of the wrist is a microcosm of the whole body’s skeletal development. It is a reflection of the children’s skeletal development in advance or behind, and an important reference for predicting the future height of children. Normal human skeletal development, is a gradual calcification of the cartilage, the final formation of robust bone process. This process is called “ossification ”. In the fetus