Late last year, I received a message from a father whose son, then nine years old and attending elementary school, had varying degrees of thumb dysplasia in both hands. The child was very sensible and handsome, and ranked top in all subjects, but because of the thumb problem, the child had a lot of inconvenience in learning and life, and his personality was more introverted than other children. Although the child never said anything, but the parents see in the eyes of the heart is very bad taste, feel quite sorry for the child, found me just want to know the child’s thumb there is no hope of correction. Soon after the message was left, the parents brought their child to my clinic. His right hand was better, but his left hand was a typical floating thumb, with only a loose skin tube connecting the thumb to the palm of the hand, which could only swing with the swing of the hand. The parents had also taken their child to the local hospital, but they all said that they had to undergo thumb bunionization, that is, to remove the thumb directly and move the index finger to the thumb position to use it as a thumb, and the parents did not agree at that time. The father’s words were: “If we really cut it, the child will only have four fingers forever, I’m afraid he will blame me when he grows up, but at least there is still hope to save it if we don’t do the surgery”. In this way, with the hope of preserving the five fingers, the family took the child to different parts of the country for checkups every summer vacation for many years. Later, some doctors told them that their child could have metatarsal reconstruction surgery, taking bone from the foot to rebuild the first metacarpal, which could also save the child’s thumb, but the parents were still not satisfied with what they heard, thinking that the cost was too high, and fearing that their child would have problems running in the future. The parents said that they wanted to correct their child’s thumb, but they did not want to affect other parts of their child’s body, and that since they had problems with their hands, they would only operate on their hands and would not touch other parts of their child’s body, and that they would not accept a surgical solution that would “tear down the east wall and repair the west wall”. We share this parent’s viewpoint, which is why we now use hemimetacarpal bone grafting for the treatment of floating bunions. Hemi-metacarpal bone grafting is a technique whereby a portion of the second metacarpal bone is taken from the affected hand to rebuild the first metacarpal bone. The surgery is performed on the hand only, and there is no problem of the foot being affected. The metacarpal bone in both the donor and recipient areas can continue to grow after the surgery, and the aftercare is relatively simple. After the surgery, the child’s thumb shape and function will be improved, and can be further improved with the later functional exercise, the overall effect is still relatively good.