There are two surgical options to preserve and restore some function to the floating thumb. One is metatarsal reconstruction, which is an earlier surgical option to correct the floating thumb and preserve the thumb. The overall results are good, and the child will have a much improved appearance and function of the thumb after the surgery compared to the pre-operative period. However, there are also some problems with metatarsal reconstruction, as it is done by taking part of the metatarsal bone from the foot to reconstruct the first metacarpal bone in the hand, and there is a certain chance of bone resorption and necrosis. Because the bone is taken from the foot, it will have a certain impact on the weight bearing of the foot, and the child cannot bear weight for at least three months after the surgery, and can only lie or sit, which is very difficult for active children. Nowadays, we mainly use the hemi-metacarpal bone grafting and reconstruction technique to reconstruct the first metacarpal bone from the second metacarpal bone of the affected hand, which is operated on the hand only and does not affect the foot, so parents’ worries about affecting the foot can be completely eliminated. The first stage is to move the bone, and the metacarpal bone in both the donor and recipient areas can continue to grow after the surgery, and the second surgery can be performed after the bone has healed. The second stage of surgery is to reconstruct the function of the thumb, so that the thumb can be moved. After the two-stage surgery, the child will be able to do some things slowly and the appearance and function of the thumb will be improved.