Impairment Scale

Question 1

Grade A

Answer 1

complete lack of motor and sensory function below the level of injury

Question 2

Grade B

Answer 2

Some sensation below the level of the injury

Question 3

Grade C

Answer 3

some muscle movement is spared below the level of injury, but 50% of the muscles below the level of injury cannot move against gravity

Question 4

Grade D

Answer 4

Most of the muscles that are spared below the level of injury are strong enough to move against gravity (>50%)