Upper Extremity Nerve Roots

Question 1

Testing Individual Nerve Root C5

Answer 1

Disc Level: C4Muscle Tests (2): 1.) Shoulder abduction - Deltoid (Axillary Nerve) 2.) Forearm flexion - Biceps (Musculocutaneous Nerve)Reflex: BicepsSensation: Lateral arm

Question 2

Testing Individual Nerve Root C6

Answer 2

Disc Level: C5Muscle Test (1): 1.) Wrist extension - Extensor carpi radialis longus & brevis - Extensor carpi ulnaris (Radial Nerve)Reflex: Brachioradialis Sensation: Anterior lateral forearm, palm, thumb & 2nd digit

Question 3

Testing Individual Nerve Root C7

Answer 3

Disc Level: C6Muscle Tests (3): 1.) Elbow extension - Triceps (Radial Nerve) 2.) Wrist flexion - Flexor carpi radialis (Median Nerve) - Flexor carpi ulnaris (Ulnar Nerve) 3.) Finger extension - Extensor digitorum communis - Extensor indicis profundus - Extensor digiti minimi (Radial Nerve)Reflex: TricepsSensation: 3rd digit, middle of palm

Question 4

Testing Individual Nerve Root C8

Answer 4

Disc Level: C7Muscle Tests (1): 1.) Finger flexion - Flexor digitorum superficialis - Flexor digitorum profundus - Lumbricals (Median & Ulnar Nerves)Reflex: NoneSensation: 4th and 5th digits, antero-medial hand and forearm

Question 5

Testing Individual Nerve Root T1

Answer 5

Disc Level: T1Muscle Tests (2): 1.) Finger abduction - Dorsal interossei (Ulnar Nerve) 2.) Finger adduction - Palmar interossei (Ulnar Nerve)Reflex: NoneSensation: Antero-medial arm (distal aspect of arm to proximal aspect of forearm)