The treatment of the skull after craniotomy must be judged according to the situation, and in the majority of clinical cases, it is still mainly placed in situ. The skull bones are rejoined again with a connecting piece or a connecting plate, which basically grows slowly over time, in about three months. In the later stage, there is a certain amount of scarring or bone seam, but it does not affect the overall stability. There are times, for example, when decompression surgery is needed to remove the bone flap, and such a flap is left to the family to handle. Because there is no technology that can preserve the bone flap for a long time, the bone flap also has blood flow and can become necrotic if it is left for too long, so it is usually left to the family to deal with.