Nerve Root Upper Extremity

Question 1

Nerve Root C5

Answer 1

a) Disc Level: C4

b) Muscle Tests: Shoulder abduction: Deltoid (Axillary Nerve),
Forearm Flexion: Biceps (Musculocutaneous Nerve)

c) Reflex: Biceps
d) Sensation: Lateral Arm

Question 2

Nerve Root C6

“Biker Chicks”

Answer 2

a) Disc Level: C5
b) Muscle Tests: Wrist Extension: Extensor carpi radialis longus & Brevis, and Extensor carpi ulnaris (Radial Nerve)
c) Reflex: Brachioradialis
d) Sensation: Anterior lateral forearm, palm, thumb and 2nd digit

Question 3

Nerve Root C7

“Make a Seven”

Answer 3

a) Disc Level: C6
b) Muscle Tests: Elbow extension: Triceps (Radial Nerve),

Wrist Flexion: flexor carpi radialis (Median Nerve), flexor carpi ulnaris (Ulnar Nerve),
Finger flexion: Extensor digitorum communis, extensor indicis profundus, extensor digiti minimi (Radial Nerve)

c) Reflex: Triceps
d) Sensation: 3rd digit, middle palm

Question 4

Nerve Root C8

“Figure 8”

Answer 4

a) Disc Level: C7
b) Muscle Tests: Finger Flexion: Flexor digitorum superficialis, flexor digitorum profundus, lumbricals (Median and Ulnar Nerve)
c) Reflex: None
d) Sensation: 4th & 5th digit, antero-medial hand and forearm

Question 5

Nerve Root T1

“T1 finger fun”

Answer 5

a) Disc Level: T1
b) Muscle Tests: Finger abduction: Dorsal interossei (Ulnar Nerve),
Finger adduction: Palmer interossei (Ulnar Nerve)

c) Reflex: None
d) Sensation: Anter-medial arm, distal aspect of arm to proximal aspect of forearm