Floating bunion is a type IV bunion dysplasia, which is characterized by varying degrees of damage to the first metacarpal bone of the affected hand, which is either completely absent or only remains. The thumb is connected to the metacarpal bone with only a tiny dermatome, which can only be swung by the swinging of the hand, and the child is unable to use the thumb by himself/herself. There are many treatment options for floating thumb. We mainly use the technique of hemi-metacarpal bone graft reconstruction, which is a two-stage surgery to build up its form and function. After the surgery, the child can write, hold chopsticks, tie shoelaces, or hold some large objects forcefully, which basically meets the daily needs. The cause of its development is not clear for the time being, and it may be related to environmental stimuli or the mother’s physical condition during pregnancy. So can floating bunions be passed on to the next generation or not? I have not come across any cases where the parents have floating bunions and their children also have floating bunions, or where the first child has floating bunions and the second child also has floating bunions. Therefore, if your child has a bunion, you don’t need to worry too much and take your child for surgery as soon as possible.