Root Syndromes

Question 1

C5

Answer 1

Sensation: pain in lateral shoulder, sensory loss over deltoid
Motor deficit: Weakness of deltoid, suprespinatus, biceps
Relfexes: impairment of biceps reflex

Question 2

C6

Answer 2

Sensation: radial side of the arm to thumb
Motor: Weakness of biceps and brachioradialis
Reflexes: Impairment or loss of biceps reflex

Question 3

C7

Answer 3

Sensation: Between second and fourth finger
Motor: Triceps, wrist extensors and flexors, pectoralis major muscles
Reflexes: Impairment of loss of triceps reflex

Question 4

L3

Answer 4

Sensation: often none, sometimes medial thigh and knee
Motor: quads, adductor may be affected
Reflexes: loss of knee jerk, loss or impaired adductor reflex

Question 5

L4

Answer 5

Sensation: medial leg below knee to medial malleolus
Motor: Quads and anterior tibial muscles
Reflexes: decreased knee jerk

Question 6

L5

Answer 6

Sensation: dorsum of foot to great toe
Motor: extensor hallicus longus, extensor digitorum longus, inversion and eversion of foot

Question 7

S1

Answer 7

Sensation: Lateral border of the foot
Motor: Plantar flexion, toe flexion
Reflexes: decreased or absent ankle jerk