After I opened my media platform, I often receive private messages from some users, and one of the most frequently asked questions is whether floating thumbs can be saved or not? Many parents think that their children’s thumbs can only be rebuilt if they have some bones, and it is difficult to save thumbs that have no metacarpal bone or only metacarpal bone remains, especially floating thumbs that are thin and long with a thin tip, like a small meatball hanging on the hand, and it feels like it will be torn off with a little force. Such a floating thumb is indeed very fragile, so is there really no way to save it? Of course not. Nowadays, the floating bunion can be preserved through the technique of hemimetacarpal bone graft reconstruction. The metacarpal bone graft is a reconstruction of the first metacarpal bone from the second metacarpal bone. The metacarpal bone in both the donor and recipient area will continue to grow after the surgery, and the shape of the thumb can be significantly improved. Hemi-metacarpal bone graft reconstruction surgery is divided into two phases. After the first phase of surgery, the bone heals before the second phase of surgery is performed to rebuild the function of the thumb so that it can move. After the two-stage surgery, the baby can start to exercise functionally, and slowly can do some things, do some fine movements or strong grasp some big objects, basically can meet the needs of daily life.