Each part of the human body has its own role, and each part is indispensable. The skull is a very important piece of the human skeleton, it plays a role in protecting the brain tissue, if the skull is defective, how much impact is imaginable. Some people suffer cranial defects due to sudden accidents. At first they don’t realize the importance of skull repair, and only when the problem gets worse do they rush to have skull repair surgery. Is it still necessary to have cranial repair four years after surgery without it? If the skull defect is not repaired, the shape of the defective part of the skull will change over a long period of time, and the scalp will be affected by atmospheric pressure and become invaginated, which will press on the brain tissue, and then lead to problems such as disorders of cerebral blood supply as well as abnormalities in cerebrospinal fluid circulation. Therefore, even four years after the operation, patients who have a cranial defect of 3 centimeters or more in diameter, with no muscle coverage and no contraindications should go for cranial repair surgery. Regarding cranial repair surgery, titanium mesh material is widely used today in many local hospitals. This material has some advancements, but at the same time it has many problems and the postoperative recovery is not ideal. Therefore, if you want to do better cranial bone repair surgery, you still have to have a more advanced and safer material. Currently, the clinical application of peek material as cranial bone repair material, peek material is a kind of polymer material, strong stability, hard and elastic, and has a strong tissue compatibility and thermal insulation properties, using this material to do cranial bone repair surgery, can really restore the original cranial bone structure. If you really have a skull defect problem, please make sure to attach great importance to it, and do the skull repair surgery as soon as possible to better minimize the damage.