Ulnar nerve

Question 1

Which muscles does the Ulnar nerve innervate?

Answer 1

The muscles of the hand (except the thenar muscles and 2 lateral lumbricals)
Flexor carpi ulnaris
Flexor digitorum profundus

Question 2

What is the sensory innervation of the Ulnar nerve?

Answer 2

Anterior and posterior of the Medial one and a half fingers and associated palm area

Question 3

What spinal roots supply the Ulnar nerve?

Answer 3

C8 and T1

Question 4

What is the route of the Ulnar nerve?

Answer 4

Down the Medial side of the arm
Pass the Medial epichondyle
Passes down the forearm

Question 5

What are the 3 branches of the Ulnar nerve?

Answer 5

Muscular branch
Palmar branch
Dorsal branch

Question 6

Where does the Ulnar nerve travel by the hand?

Answer 6

Superficial to the flexor reticaculum known as the Ulnar canal

Question 7

What is Ulnar tunnel syndrome?

Answer 7

Entrapment of Ulnar nerve as it passes through the Ulnar tunnel

Question 8

What muscles are innervated by the Ulnar nerve?

Answer 8

Flexor carpi ulnaris
Flexor digitorum profundus
Hypothenar muscles
Medial 2 lumbricals
Interossei
Adductor pollicis

Question 9

What are the 3 branches of the Ulnar nerve?

Answer 9

Palmar cutaneous
Dorsal cutaneous
Superficial branch

Question 10

What does the Palmar cutaneous branch of the Ulnar nerve innervate?

Answer 10

Sensation in the medial half of the palm

Question 11

What does the dorsal cutaneous branch of the Ulnar nerve innervate?

Answer 11

Sensation in the medial half of the dorsum of the hand.

Dorsal surface of the medial one and a half fingers

Question 12

What does the superficial branch of the Ulnar nerve innervate?

Answer 12

Sensation to the palmar surface of the medial one and a half fingers

Question 13

How is the Ulnar nerve commonly damaged at the Elbow?

Answer 13

Fracture of the Medial epichondyle

Question 14

When there is damage to the Ulnar nerve at the elbow, what is the motor damage?

Answer 14

Paralysis of all the muscles innervated by the Ulnar nerve

Question 15

When there is damage to the Ulnar nerve at the elbow, what is the sensory damage?

Answer 15

Loss of sensation in all areas supplied by the Ulnar nerve

Question 16

What are the signs of damage to the Ulnar nerve at the elbow?

Answer 16

Cannot grip paper placed between gtheir fingers

Question 17

How is the Ulnar nerve damaged at the wrist?

Answer 17

Lacerations to the wrist

Question 18

When the Ulnar nerve is damaged at the wrist, what is the motor damage?

Answer 18

Paralysis of interossei, Medial 2 lumbricals

Question 19

When the Ulnar nerve is damaged at the wrist, what is the sensation damage?

Answer 19

Sensory loss over palmar side of medial one and a half fingers only

Question 20

When the Ulnar nerve is damaged at the wrist, what is the characteristic sign?

Answer 20

Cannot grip paper placed between their fingers.

In long term cases get the Ulnar claw