Condition	Affected nerve	Signs and symptoms	Cervical nerve root mimicker	Distinguishing feature
Carpal tunnel syndrome	Median	Paresthesias, thenar weakness, numbness in radial 3½ fingers	C6, C7	No triceps or wrist extensor weakness in carpal tunnel syndrome
Cubital tunnel syndrome	Ulnar	Paresthesias, grasp weakness, numbness in ulnar half of ring and little fingers	C8, T1	No thumb interphalangeal flexion weakness in cubital tunnel syndrome
Posterior interosseus nerve entrapment	Peripheral interosseus nerve branch of the radial nerve	Pain, wrist and finger extensor weakness	C7	No triceps or wrist flexor weakness in posterior interosseus nerve entrapment