The bone line normally does not grow taller after it closes. If it appears to grow taller, it is most likely caused by a restricted epiphyseal closure. Restricted epiphyseal closure refers to the normal closure of a bone line that developed earlier in the body, and the development time of human bones is different, so the time of closure of bones is also different, for example, the wrist for the bone line closed earlier, but other parts of the bone line did not close, but there will still be the phenomenon of growth. In general, the skeletal line closes around the age of 25, so it will not grow taller after this stage. Usually, when the epiphyseal closure is checked, the position of the epiphysis closes earlier, so when the bone line of the femur is not closed, it will still grow taller.