The Ulnar Nerve

Question 1

What are the nerve routes of the ulnar nerve?

Answer 1

C8-T1

Question 2

What parts of the hand does the ulnar nerve innervate?

Answer 2

The muscles of the hand, flexor carpi ulnaris and medial half of flexor retinculum

Question 3

Where does the ulnar nerve pass in relation to the medial epicondyle?

Answer 3

Passes posteriorly to the medial epicondyle

Question 4

What movements can still occur when the ulnar nerve is damaged?

Answer 4

Flexion can still occur at the wrist, but is accompained by abduction and the interossei are paralyes so abduction and adduction of the fingers cannot occur.

Question 5

What symptoms may you see when the ulnar nerve is damaged?

Answer 5

The ulnar claw and the patient is unable to grip paper between their fingers

Question 6

What are some of the features of ulnar claw?

Answer 6

Hyperextension of the metacarpohalengeal joints of the little and ring fingers, and flexion at the interphealgeal joints