This illustration displays a decompressive hemicraniectomy procedure to treat elevated intracranial pressure. The first step shows the creation of an incision along the head. The second step in the procedure shows the reflection of the skin and muscle flap followed by the creation of burr holes and bone flap in the skull. The third step shows the removal of the bone flap and the last step shows the incision of the dura to release intracranial pressure.