Limb Nerve Palsies

Question 1

What is Hilton’s law?

Answer 1

The nerves crossing a joint supply the muscles acting on it and the joint itself

Question 2

What are the motor and sensory deficits of an axillary nerve injury?

Answer 2

Motor deficit - loss of shoulder abduction (deltoid)

Sensory deficit - badge area

Question 3

What are the motor and sensory deficits of a radial nerve injury?

Answer 3

Motor deficit - wrist drop (extensors)

Sensory deficit - 1st web space dorsally

Question 4

What are the motor and sensory deficits of a median nerve injury?

Answer 4

Motor deficit - thenar wasting (monkey hand), pointing finger
Sensory deficit - volar aspect thumb

Question 5

What are the motor and sensory deficits of an ulnar nerve injury?

Answer 5

Motor deficit - claw hand, hypothenar & 1st dorsal interosseous wasting
Sensory deficit - little finger

Question 6

What does injury to the common fibular nerve cause?

Answer 6

Slapping gait and foot drop

Question 7

What does compression of the lateral femoral cutaneous nerve?

Answer 7

Meralgia paraesthetica