Decompressive craniectomy is a treatment of refractory intracranial hypertension after various etiologies : malignant ischemic stroke, traumatic brain injury, intraparenchymal hemorrhage, aneurysmal subarachnoid hemorrhage, cerebral venous thrombosis.

Initially considered as a lifesaving therapy, benefits in terms of survival were shown compared to medical treatment alone.

However, despite a better survival, morbidity and poor neurological outcome are frequent among survivors.

The objective of the study is to identify initial good neurological outcome factors after decompressive craniectomy in a large series of patients, in order to argue surgical and intensive care decisions, considering expected benefit and quality of life.

Inclusion Criteria:

• Patients undergoing a decompressive craniectomy from 06/11/2008 to 06/15/2018 in CHRU Nancy, France.

Exclusion Criteria:

• Infectious ou malignant disease leading to decompressive craniectomy.

All patients undergoing a decompressive craniectomy on a 10 year period in CHRU Nancy, France.