What are the effects of not having skull repair surgery after a skull defect? The skull is the top layer of the body’s skeletal system, located above the spine, and consists of 23 bones of different shapes and sizes that are delicately fused together to form a completely enclosed cranial cavity that protects and supports the brain, head, and facial organs. So the importance of the skull to the human body cannot be overstated. However, risks and accidents exist everywhere, and the skull can be damaged by force majeure in the external environment, and cranial defects are one of the more analyzed and common disorders in neurosurgery. For example, traffic accidents, production safety accidents, falling objects, fights, cranio-cerebral surgery, etc. may produce damage to the skull, and ultimately develop a skull defect. This requires timely and effective cranial repair surgery. Some patients ask: What are the effects of not having cranial repair surgery after a cranial defect? If a skull defect occurs and the diameter of the defect is greater than 3 centimeters, it is recommended that the skull be repaired in a timely manner. If the skull is not repaired in time, on one hand, the appearance of the skull will be greatly affected, and on the other hand, it will result in the absence of the skull, rapid changes in the intracranial environment, unstable intracranial pressure, which may affect the cerebrospinal fluid circulation in the brain and cerebral blood flow, and neurological function will be impaired, leading to a series of cranial defect syndromes and affecting the physical and mental health of the whole person. Another very important point is the safety issue, if not repaired in time, if the head injury may directly damage the brain tissue, serious or even directly life-threatening, very dangerous. Therefore, timely cranial repair surgery is very necessary. When doing skull repair surgery, the repair material is very important, and the surgical technique is also very important. At present, a team of neurosurgeons from the Civil Aviation General Hospital of China is working to carry out PEEK cranial bone repair and plastic surgery, and has achieved a good clinical application. Li, 18 years old from Gansu, suffered severe craniocerebral trauma in a fight with others, and was resuscitated in the local hospital, leaving a cranial defect after craniotomy to remove the bone flap. This caused a huge impact on him, frequent physical activity, frequent dizziness and headache, and due to the appearance of abnormal, skull collapse deformation, young people always feel like a monster, psychological unacceptable. Later, his family went to the Civil Aviation General Hospital of China (CGCH), where Professor Zhu of the Department of Neurosurgery personally attended to him and, after a detailed scientific diagnosis and value assessment, customized three-dimensional shaping of the personalized PEEK material, and then implemented PEEK cranioplasty for his cranial repair and reconstructive surgery. After the surgery, Li’s skull was restored to its original appearance, and he began to regain his handsome appearance. He also regained his former self-confidence, the symptoms of unfavorable limb effects improved significantly, and the symptoms of dizziness and headache disappeared, making the surgery a very important and successful one.