Nerve Root Evaluations

Question 1

Nerve Root C5

Answer 1

Disc Level
- C4

Muscle Tests (2)

• shoulder ABduction: deltoid (axillary nerve)
• forearm flexion: biceps (musculocutaneous)

Reflex
- biceps

Sensation
- lateral arm

Question 2

Nerve Root C6

Answer 2

Disc Level
- C5

Muscle Test
- wrist extension: carpi radialis longus and brevis, and extensor carpi ulnaris (radial nerve)

Reflex
- brachioradialis

Sensation
- anterior lateral forearm, palm, thumb and 2nd digit

Question 3

Nerve Root C7

Answer 3

Disc Level
- C6

Muscle Tests (3)

• elbow extension: triceps (radial)
• wrist flexion: flexor carpi radialis (median) and flexor carpi ulnaris (ulnar)
• finger extension: extensor digitorum communis, extensor indicis profundus and extensor digiti minimi (all radial)

Reflex
- triceps

Sensation
- 3rd digit and middle of palm

Question 4

Nerve Root C8

Answer 4

Disc Level
- C7

Muscle Test
- finger flexion: flexor digitorum superficialis, flexor digitorum profundus, lumbricals (all median and ulnar)

Reflex
- none

Sensation
- 4th and 5th digits, anteromedial forearm and hand

Question 5

Nerve Root T1

Answer 5

Disc Level
- T1

Muscle Tests (2)

• finger ABduction: dorsal interossei (ulnar)
• finger adduction: palmar interossei (ulnar)

Reflex
- none

Sensation
- anteromedial arm

Question 6

Nerve Root L4

Answer 6

Disc Level
- L3

Muscle Test
-foot dorsiflexion and inversion: tibialis anterior (deep peroneal/fibular)

Reflex
- patellar tendon

Sensation
- medial aspect of leg, medial foot, medial aspect of big toe

Question 7

Nerve Root L5

Answer 7

Disc Level
- L4

Muscle Tests (4)

• foot dorsiflexion: tibialis anterior, peroneous tertious, extensor digitorum longus and brevis, extensor hallicus longus (deep peroneal/fibular)
• big toe dorsiflexion: extensor hallicus longus (deep fibular/peroneal)
• toes 2, 3, 4 dorsiflexion: extensor digitorum longus and brevis (deep peroneal/fibular)
• hip and pelvis ABduction: gluteus medius and minimus (superior gluteal nerve)

Reflex
- none

Sensation
- lateral leg, dorsum of foot, and middle three toes

Question 8

Nerve Root SI

Answer 8

Disc Level
- L5

Muscle Tests (3)

• foot plantarflexion and eversion: fibular/peroneous longus and brevis (superficial peroneal/fibular)
• foot plantar flexion: gastrocnemius and soleus (tibial)
• hip extension: gluteus maximus (inferior gluteal nerve)

Reflex
- Achilles

Sensation
- posterior aspect of the leg, lateral aspect of foot, and lateral aspect of little toe

Question 9

Nerve Root S2

Answer 9

Disc Level
- S1

Sensation
- Posterior aspect of thigh over popliteal fossa onto posteromedial calf