The Extra Dural Hematoma Complicating a Decompressive Craniectomy about One Case

The extra-dural hematoma or epidural hematoma is a collection of blood formed between the dura mater and the internal table of the skull bone. The origin is traumatic most often causing an arterial lesion more particularly of the meningeal artery; this explains the topographical predilection of extra dural hematoma for the temporal zone with 50% of cases according to (BRICOLO 1984); rarely the cause may be a post-traumatic lesion of a venous sinus or a bone bleed at the level of the fracture site. In this respect, 5 to 10% of forms without fracture exist (BRICOLO 1984). Classic in traumatology and more readily the young subject 60% between 10 and 40 years. Beyond 60 years the dura matter adheres to the internal table of the bone and gives it a less releasable character in the area of Gérard Marchand which explains the rarity of this lesion after 65 years.