The skull is irreplaceable in its mission to keep the brain safe. If a traumatic brain injury or a disease requires craniotomy, this often leads to a cranial defect. Many people in life do not realize the seriousness of cranial defects, and always feel that there is no need to repair the cranium, is this really true? Craniotomy after a long time without repairing the skull hidden dangers, patients should pay attention to, here are three aspects of the impact of the cranium without repair analyzed: 1, aesthetic and psychological. Cranial defects cosmetic appearance is directly affected, if the defect area is large, the head is sunken, looks very scary. If it is not repaired for a long time, the patient’s psychology will also be hit, and even become low self-esteem and depression. 2.Safety aspects. Cranial defects in the brain tissue is only covered by the scalp, the lack of hard shell protection, not timely repair, it is easy to knock the touch, which will directly injure the brain tissue, the occurrence of more serious consequences. 3.Body aspect. Cranial defect will lead to a series of cranial defect syndrome, such as headache, dizziness, numbness and weakness of the limbs, emotional instability, irritability, etc., seriously affecting the quality of life. As you can see from all of this, cranial defects need to be repaired before it’s too late. Our team is currently performing a wide range of cranial bone repair surgeries, using a very safe and advanced polymer material, PEEK, to perform the surgery. PEEK material is more advantageous than other materials in the past, with good histocompatibility, hardness and elasticity, strong stability, and comparable to autologous skull, so there is no need to worry about problems after the operation. Moreover, we are constantly optimizing the design of the material and improving and upgrading the technology, and we have also successfully integrated the concept of cosmetic plastic surgery into the comprehensive PEEK cranioplasty, which results in a beautiful postoperative recovery.