Retain only the scapular elevators (trapezius) and the diaphragm. Unable to use arms, trunk, or lower extremities. Individual needs a power wheelchair to ambulate and will use a mouthstick to operate the wheelchair.
Cervical 5
Functional muscle groups include the deltoids, part of the biceps, and part of the scapular adductors (rhomboids). The innervation of these muscles allows the arm to be used for some activities. There is no control at the wrist or hand.
Cervical 6
Functional muscle groups include biceps, brachioradialis, wrist extensors, and partial use of the latissimus dorsi and pectoralis muscles. There is no control at the hand.
Cervical 7-8
Use of triceps, some finger extensors, and long finger flexors. May still have some dexterity problems with the hands and fingers.
Thoracic 1-8
Has complete use of the hands. Poor trunk control because of affected abdominal muscles.
Thoracic 9-12
Good trunk control because of full use of abdominals.
Lumbar 1-3
Use of hip flexors and hip adductors.
Lumbar 4 - Sacral 2
Use of hamstrings. Some ankle and foot musculature may be present.
