Bunion dysplasia functions slightly differently after surgery depending on the typology. Types 1 and 2 have relatively good shape and function of the thumb, so these two types function best after surgery. Types 3 and 4 thumb dysplasia are characterized by the absence of some or most of the metacarpal bones, and in many children the metacarpophalangeal joints are dysplastic, so the function of these two types of thumb dysplasia is not as good as that of Types 1 and 2. However, through metacarpal bone graft reconstruction surgery and postoperative rehabilitation exercises, the child can regain the ability to pinch, grip, pinch, and hold most of the fingers, which means that eating, holding chopsticks, holding spoons, holding pens, writing, etc., and even holding and pinching some very small objects can be achieved with good results, and the function and appearance of the child will generally recover quite well after the surgery. Type 5 thumb dysplasia is the complete absence of thumb, the child has only four fingers, for this type of thumb dysplasia we need to show finger bunionization surgery, the results are also more ideal, but the child still only has four fingers.