Some people in life have to undergo craniotomy because of some kind of disease or accident, etc. When it comes to craniotomy, people are worried about the high risk and fear that there will be various problems with the surgery, etc. These various concerns are understandable. However, nowadays, medical technology is becoming more and more advanced, and craniotomy has become very mature, so patients must choose a regular hospital for the surgery. Whether the craniotomy is performed for disease or accidental reasons, the common denominator is that the cranial opening can only be completed, so it will be easy to leave behind the cranial defect problem. Cranial defects can leave the intracranial tissues without the protection of the skull, which is quite dangerous. Do I have to have a cranial repair after a craniotomy? This is a question that should be recognized, if there is a decompression of the bone flap during the craniotomy, this will definitely cause a defect to the skull, in this case it is necessary to perform cranial bone repair surgery, and the surgery should be performed about 2-3 months after the craniotomy, so that the recovery is better. The skull itself plays a protective role for human brain tissues, and if the skull is damaged due to craniotomy, the fragile intracranial tissues may be attacked by the outside world at any time, which is very dangerous. Therefore, the importance of repairing the skull after craniotomy should not be overlooked. It is crucial to follow the expert’s advice and have the skull repair surgery at the right time. The PEEK material we currently use for cranial repair surgery is quite superior to many previous materials, and the post-operative contouring results are quite natural and have been recognized and praised by many patients. The PEEK material can be remodeled in three dimensions and can be highly restored to the human skull, which can be described as a true restoration, and is currently a medically respected and trusted material for cranial bone repair.