ulnar nerve palsy

Question 1

ulnar nerve arises from

Answer 1

C8 and T1

Question 2

motor function of ulnar

Answer 2

medial two lumbricals
aDductor pollicis
interossei
hypothenar muscles: abductor digiti minimi, flexor digiti minimi
flexor carpi ulnaris

Question 3

sensory function of ulnar

Answer 3

medial 1 1/2 fingers (palmar and dorsal aspects)

Question 4

ulnar nerve damaged at wrist

Answer 4

‘claw hand’ - hyperextension of the metacarpophalangeal joints and flexion at the distal and proximal interphalangeal joints of the 4th and 5th digits
wasting and paralysis of intrinsic hand muscles (except lateral two lumbricals)
wasting and paralysis of hypothenar muscles
sensory loss to the medial 1 1/2 fingers (palmar and dorsal aspects)