 Bone and cartilage grafts may be necessary to create a nasal frame and local rotation with for example forehead flaps, or advancement flaps can be used to cover the nose.As with almost every kind of surgery, the main complications in both treatments of hypertelorism include excessive bleeding, risk of infection and CSF leaks and dural fistulas.Infections and leaks can be prevented by giving perioperative antibiotics and identifying and closing of any dural tears.