Skull repair is a relatively small operation in neurosurgery, and the operation time will not be long, generally no more than 2 hours, whether it is using titanium mesh or bone cement. But it depends on the difference between a hospital and a doctor. Which means it's not absolute. Moreover, the different size and location of skull repair will also affect the operation time, but skull repair will not touch brain tissue, you can rest assured. There are usually no complications.