Hand nerve palsies Flashcards Preview

Neurology > Hand nerve palsies > Flashcards

Flashcards in Hand nerve palsies Deck (18)
Loading flashcards...
1
Q

Sensory loss/pain over the thumb and lateral 2 and a half fingers

A

Median nerve palsy

2
Q

Muscle wasting in median nerve palsy

A

Thenar eminence

3
Q

Weakness of thumb abduction

A

Median nerve palsy

4
Q

Which test involves percussing the carpal tunnel?

A

Tinel’s test

5
Q

Phalen’s test

A

Forced flexion of the affected wrist for 60 seconds causes symptoms

6
Q

Most common mechanism of median nerve palsy

A

Carpal tunnel syndrome

7
Q
  1. Wasting of the hypothenar eminence
  2. Pain/loss of sensation over medial 1 and a half fingers
  3. Weak finger abduction
  4. Partial claw hand
A

Ulnar nerve palsy

8
Q

Ulnar nerve palsy

A
  1. Wasting of the hypothenar eminence
  2. Pain/loss of sensation over medial 1 and a half fingers
  3. Weak finger abduction
  4. Partial claw hand
9
Q

Mechanisms of ulnar nerve palsy (2)

A

Elbow trauma

Cubital tunnel syndrome

10
Q

Froment’s sign

A

Ask patient to grip piece of paper between index finger and straight thumb; in ulnar nerve palsy the thumb flexes at the IP joint

11
Q
  1. Wrist drop
  2. Pain/sensory loss over the lateral dorsum of hand
  3. Weakness of wrist and finger extension
A

Radial nerve palsy

12
Q

Radial nerve palsy

A
  1. Wrist drop
  2. Pain/sensory loss over the lateral dorsum of hand
  3. Weakness of wrist and finger extension
13
Q

Mechanisms of radial nerve injury (2)

A

Humeral shaft fracture

“Saturday night palsy”- compression of the nerve against the humerus

14
Q

Injury to the upper plexus (C5-C7) caused by shoulder dystocia

A

Erbs palsy

15
Q

Features of Erb’s palsy (2)

A

Sensory loss down lateral arm

Arm in “waiter’s tip” posiiton (arm internally rotated and forearm pronated)

16
Q

Klumpke’s palsy

A

Injury to the lower plexus (C8-T1) caused by excessive arm traction at birth

17
Q

Features of Klumple’s palsy (3)

A

Claw hand
Wasting of small muscles in hand
Sensory loss in medial forearm and hand

18
Q

May co-exist with Klumpke’s palsy

A

Horner syndrome