Decorticate vs decerebrate posturing: drawings, meaning and GCS scores

Decorticate and decerebrate posturing are abnormal, fixed positions of the body, usually in response to a painful stimulus, in a client with a serious brain injury. In decorticate posturing the arms bend in toward the chest. In decerebrate posturing the arms straighten. In both, the legs are straight and the feet point down. Decerebrate posturing points to a lower, more serious injury.

Sources checked 18 October 2026.

Decorticate posture

• Arms: elbows, wrists and fingers flexed. The arms are pulled in to the sides and rotated inward at the shoulder.
• Legs: hips and knees extended, legs rotated inward.
• Feet: pointed down (plantar flexion).

Remember it as toward the core. De-COR-ticate: the arms pull in to the core of the body. Some students remember the hands on the chest over the heart, or cor.

Decerebrate posture

• Arms: elbows extended, forearms pronated (turned inward), shoulders pulled in and rotated inward, wrists and fingers flexed.
• Legs: extended and rotated inward.
• Feet: pointed down.

Remember it by the E: decErebrate means Extension.

Decorticate vs decerebrate

What the posture tells you

Both postures mean severe brain injury, and both are linked with brain herniation. StatPearls places decorticate injuries above the red nucleus in the midbrain, and decerebrate injuries below it. It adds that the anatomy is less tidy in real patients, because injuries in several areas can cause either posture.

The outlook differs. In one series quoted by StatPearls, about 37% of people with decorticate posturing after a head injury survived, compared with about 10% with decerebrate posturing. As pressure moves down onto the brainstem, decorticate posturing can turn into decerebrate posturing, and then into a flaccid, unresponsive state.

Glasgow Coma Scale motor scores

Score the best response you see. If one arm flexes normally and the other postures, the motor score is the better one.

What the nurse does

• Check the airway, breathing and circulation first. A client who postures often cannot protect the airway.
• Report new posturing, or any change in posturing, to the provider at once.
• Do frequent neurological checks: level of consciousness, pupils, motor response and vital signs.
• Watch for Cushing's triad: rising systolic pressure with a widening pulse pressure, a slow heart rate and irregular breathing.
• Follow the orders for raised intracranial pressure, such as keeping the head of the bed raised and the head in line with the body.

Cushing's triad is also in nursing mnemonics. For head-of-bed angles, see patient positions for the NCLEX.

Practice questions

1. Question 1Multiple choicePhysiological Adaptation
   When the nurse applies a painful stimulus, a client with a head injury bends both elbows, draws the arms onto the chest with clenched fists, and stiffens the legs with the feet pointed. How should the nurse document this?

   Decorticate posturingDecerebrate posturingWithdrawal from painLocalizing to pain
   Check answer
2. Question 2Multiple choicePhysiological Adaptation
   A client who showed decorticate posturing an hour ago now extends both arms at the elbows with the forearms turned in. What does this change suggest?

   The brain injury is getting worse and now involves the brainstem.The client is recovering.The client is now localizing to pain.This is an expected change after sedation.
   Check answer
3. Question 3Multiple choicePhysiological Adaptation
   Which Glasgow Coma Scale motor score does the nurse give for decerebrate (abnormal extension) posturing?

   2341
   Check answer
4. Question 4Multiple responsePhysiological Adaptation
   Which findings describe decerebrate posturing? Select all that apply.

   Elbows extendedForearms pronated (turned inward)Legs extended with the feet pointedArms flexed onto the chestA better outlook than decorticate posturing
   Check answer