Metaphyseal closure is mainly determined by X-ray examination, and the closure can be roughly judged according to age. Metaphyseal closure refers to the bony fusion of the metaphysis and epiphysis of a bone. On X-ray, a line of increased density can be seen in the bony fusion between the metaphysis and epiphysis, and metaphyseal closure means that the longitudinal growth of the bone has stopped. If a wide translucent band or a narrowing of the translucent band can still be seen on the X-ray, the epiphysis has not yet closed or has not yet closed completely. Epiphyseal closure usually occurs around the age of 18, but there are individual differences in the timing of epiphyseal closure. The time of epiphyseal closure varies, and it also varies between men and women. Women generally close their epiphyses half a year or a year earlier than men.