Craniotomy is a surgical procedure to temporarily remove of a part of the bone from the skull, for better access to the intracranial area of the brain. The temporarily removed portion of the skull, called bone flap, is replaced to its original position and fastened to its place with screws and plates.
If the bone plate is not replaced, then the procedure is called Craniectomy.
Depending on which portion of the skull is removed and replaced on, the procedure is categorized into Frontal, Pterional or Junctional Crainotomy.
A craniotomy that involves the use of a camera with a lighted scope inserted through a small incision in the skull is called an endoscopic craniotomy. When imaging and computer assisted navigation system are used in a craniotomy procedure, it is called stereotactic craniotomy.