The full scoring system and chart are available at the following web site:
Final grading of impairment is summarised as:
A = Complete:
No motor or sensory function is preserved in the sacral segments S4-S5.
B = Incomplete:
Sensory but not motor function is preserved below the neurological level and includes the sacral segments S4-S5.
C = Incomplete:
Motor function is preserved below the neurological level, and more than half of key muscles below the neurological level have a muscle grade less than 3.
D = Incomplete:
Motor function is preserved below the neurological level, and at least half of key muscles below the neurological level have a muscle grade of 3 or more.
E = Normal:
Motor and sensory function are normal.
A description of the GCS is available in Teasdale G and Jennett B. Assessment of coma and impaired consciousness. A practical scale. Lancet. 1974 Jul 13;2(7872):81-4.
The GCS is composed of 3 sub-scales, each scored from 1 (worst) to 5 (best):
Each aspect of performance should be considered and reported but the sum of the scores provides an overview of the brain injury:
GCS ≤ 8
GCS 9 to 12
GCS ≥ 13.
A description of the GOS is available in Jennett B and Bond M. Assessment of outcome after severe brain damage. Lancet 1975 Mar 1;1(7905):480-4.
Unable to interact with environment; unresponsive
Able to follow commands/ unable to live independently
Able to live independently; unable to return to work or school
Able to return to work or school