Cervical Radiculopathy: Neurologic Features

CERVICAL NERVE ROOTS	EXAMINATION FINDINGS			PAIN DISTRIBUTION
Cervical Radiculopathy: Neurologic Features
CERVICAL NERVE ROOTS	REFLEX	SENSORY	MOTOR	PAIN DISTRIBUTION
C5	Biceps	Lateral deltoid	Rhomboids^a (elbow extends backward with hand on hip)	Lateral arm, medial scapula
			Infraspinatus^a (arm rotates externally with elbow flexed at the side)
			Deltoid^a (arm raised laterally 30-45° from the side)
C6	Biceps	Thumb/index finger	Biceps^a (arm flexed at the elbow in supination)	Lateral forearm, thumb/index fingers
C6	Biceps	Dorsal hand/lateral forearm	Pronator teres (forearm pronated)	Lateral forearm, thumb/index fingers
C7	Triceps	Middle fingers	Triceps^a (forearm extension, flexed at elbow)	Posterior arm, dorsal forearm, dorsal hand
C7	Triceps	Dorsal forearm	Wrist/finger extensors^a	Posterior arm, dorsal forearm, dorsal hand
C8	Finger flexors	Palmar surface of little finger	Abductor pollicis brevis (abduction of thumb)	Fourth and fifth fingers, medial hand and forearm
		Medial hand and forearm	First dorsal interosseous (abduction of index finger)
		Medial hand and forearm	Abductor digiti minimi (abduction of little finger)
T1	Finger flexors	Axilla and medial arm	Abductor pollicis brevis (abduction of thumb)	Medial arm, axilla
			First dorsal interosseous (abduction of index finger)
			Abductor digiti minimi (abduction of little finger)

^a These muscles receive the majority of innervation from this root.