Are there any sequelae after cranial repair surgery? Cranial defects are mostly caused by traffic accidents, falls, violent injuries, debridement decompression surgery and sudden natural injuries. Cranial trauma accounts for 17% to 23% of these injuries, so cranial repair to repair defective skull has become a common neurosurgical procedure. Some patients may be concerned about the risks and sequelae of cranioplasty. First of all, cranial repair surgery is performed outside of the human brain, and the skull defect is exposed under the scalp, and the repair material is placed in it after complete exposure, so there is no damage to the human body and brain, and the risk is naturally not high. Secondly, cranial bone repair surgery does not involve brain tissue and does not produce so-called sequelae, but complications such as subcutaneous fluid, scalp infection, secondary epilepsy or intracranial infection may occur due to the rejection of unsatisfactory repair materials and inadequate surgical treatment. Therefore, when repairing the skull, it is important to choose the appropriate material for the repair. Currently, PEEK (polyether ether ketone) is clinically used for skull repair. This is an artificial bone material close to human bone, which does not cause discomfort due to thermal expansion and contraction, higher strength, better elasticity, and no metal artifacts in postoperative examination. This peek material is an ideal material for clinical repair. The peek material is currently the ideal material for skull repair, it is customized according to the patient’s cranial CT data, using 3D printing technology to produce a smooth and perfect fit for the patient’s defective part, and it also has good mechanical properties, biocompatibility and chemical stability, low density, light weight, after implantation, so that the patient does not have any foreign body sensation. peek’s disadvantages so far Not yet found in the clinical application. By now this material is less used in China, so be sure to go to a regular hospital for surgery to protect the patient’s post-operative recovery.