Bone age refers to the actual age of human skeletal development, if the bone age is large or small, will indicate that the human height may exist in the growth space gradually become smaller, the larger the difference between the growth space will be smaller. For example, when the human body is 20 years old, its bone age may reach 25 years old or only reach 15 years old, the chances of continuing to grow taller may be relatively small, mainly because the normal bone age can reflect the normal state of development of human bones, and once the bone age appears too fast or slow development phenomenon, it proves that the human skeleton has developed abnormalities affecting human height. To determine whether the human height can continue to grow is generally not through the bone age to judge, adolescent bone age does not reach 18 years old, the chances of growth is very high, while the bone age of more than 18 years old through the pelvis and spine radiography, if the observation of the local epiphyseal cartilage has not yet appeared completely fused, can also prove that there is room for continued growth in height.