Nerve probs

Question 1

What is erb duchenne paralysis?

Answer 1

This is damage to the C5/6 nerve roots and causes winged scapula, may be caused by a breech presentation.

Question 2

What is klumpkes paralysis?

Answer 2

This is damage to T1 due to traction, you get loss of intrinsic hand muscles

Question 3

What do you get with a damaged ulnar nerve at the wrist?

Answer 3

‘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)

Question 4

What do you get with damage to the ulnar nerve at the elbow?

Answer 4

Claw hand
as above (however, ulnar paradox - clawing is more severe in distal lesions)
radial deviation of wrist

Question 5

What does the sciatic nerve become?

Answer 5

The sciatic nerve divides into the tibial and common peroneal nerves

Question 6

How does injury of the common peroneal nerve occur?

Answer 6

Injury often occurs at the neck of the fibula

Question 7

What are the features of a common peroneal nerve lesion?

Answer 7

Foot drop

Other features…

• weakness of foot dorsiflexion
• weakness of foot eversion
• weakness of extensor hallucis longhs
• sensory loss over the dorsum of the foot and lower lateral part of the leg
• wasting of the anterior tibial and peroneal muscles