peripheral nerves and injuries

Question 1

What is saturday night palsy?

Answer 1

Radial nerve mononeuropathy caused through compression of nerve due to falling asleep with arm slumped over the chair for example.

Question 2

What effect does alcohol play in SNP?

Answer 2

Tingling and pain would normally cause patient to wake up but alcohol prevents this, causing continual degeneration of nerve

Question 3

Which nerve is affected by handcuffs?

Answer 3

Superficial radial nerve

Question 4

What symptoms resent in radial nerve mononeuropathy?

Answer 4

Loss of sensation over radial aspect of posterior surface of forearm and hand

Weakness of wrist and finger extensors

Question 5

What symptoms will present with a deep cut to the base of fingers 3/4/5?

Answer 5

Damage to ulnar digital nerve - loss of sensation to that finger

Question 6

What is Wallerian Degeneration and how does it occur?

Answer 6

Part of the axon separated from neurons cell body degenerates distal to the injury

schwann cells phagocytose myelin, attracting macrophages which breakdown myelin. This leaves solo endoneurial tube

Question 7

If surgery wasnt done to repair nerve damage, what would happen?

Answer 7

Axons wouldn’t align to nerve fibres would grow randomnly, causing a neurom - painful swelling

Question 8

Which 4 areas make up normal movement?

Answer 8

• Tone
• Reciprocal movement
• Patterns of movement
• Proprioceptive Control

Question 9

What is muscle tone?

Answer 9

State of variability or readiness within a muscle