The vast majority of skull fractures do not require cranial repair, and cranial fractures generally have very little cranial defect, however, if there is a comminuted fracture at the time, and a fragment removal procedure is performed, and there is a large cranial defect after the procedure, then cranial repair is required at a later stage, generally after three months. This is because there is an increased risk of infection if the interval is too short for a second surgery. Why do you need to do skull repair surgery: If there is a skull defect, there are impacts, that’s why you need to do skull repair surgery, first of all, the location of this defect does not have skull bone to protect the brain tissue, under the scalp is the brain tissue, once impacted, it can cause contusion and bleeding of brain tissue. In addition, in the location of the defect, the brain tissue can bulge outward, which can also cause some pulling damage to the brain tissue, and some of them will be sunken inward, which affects the aesthetics. These conditions can be avoided by repair surgery. Surgical procedure: The procedure starts with a cranial CT examination and three-dimensional reconstruction to determine the scope and area of the defect. According to the results of the examination, a suitable titanium mesh is fabricated, an incision is made around the periphery of the defect to expose the edges of the defect, and then the mesh is fixed to the peripheral skull with titanium nails. In addition, the bleeding should be stopped thoroughly to avoid the formation of hematoma after the surgery. After the surgery, antibiotics can be used to prevent infection, and the wound can be changed and sterilized on time, and the stitches can be removed in about 7~10 days, and then the healing and recovery will take place.