But I know there is a way to artificially fracture you, and then use a scaffold to help you pull the broken bone apart by a millimeter every day, but it will heal naturally. If you press 1 mm every day, it will be 3 cm a month. But this is the limit of human beings.

This method is quite dangerous, because it needs a lot of calcium supplementation, and it is easy to lead to osteoporosis due to personal absorption problems. The success rate is not high and it is easy to be disabled.