However, this concept has been criticized as lesions in the supratentorial region can also cause both decorticate and decerebrate posturing, though the brainstem is typically involved. Typically, the anatomical divide associated with decorticate and decerebrate posturing is the intercollicular line at the level of the red nucleus. Severe TBI is defined as patients with a GCS of 8 or less. A 2019 systematic review estimates there to be 69 million TBI worldwide each year, with 7.95% being classed as severe. However, the incidence of pathologies that commonly cause decorticate and decerebrate posturing is available. The commonest cause of decorticate and decerebrate posturing is traumatic brain injury (TBI). Epidemiologyĭata on the incidence of abnormal posturing is not published. In patients with preexisting structural lesions of the central nervous system, episodes of decerebrate posturing can occur in response to numerous physiological factors including, but not exclusive to, fever, hypoxia metabolic disturbance sensory irritation hypoglycemia and meningeal irritation. Electrolyte abnormalities: hyponatremia, hypomagnesemia, hypocalcemia.Intracerebral hemorrhage: cerebellar or brainstem.Infarct: brainstem or bilateral diencephalic.Traumatic brain injury including diffuse axonal injury.
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