Hand nerve palsies Flashcards Preview

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Flashcards in Hand nerve palsies Deck (18):
1

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

Median nerve palsy

2

Muscle wasting in median nerve palsy

Thenar eminence

3

Weakness of thumb abduction

Median nerve palsy

4

Which test involves percussing the carpal tunnel?

Tinel's test

5

Phalen's test

Forced flexion of the affected wrist for 60 seconds causes symptoms

6

Most common mechanism of median nerve palsy

Carpal tunnel syndrome

7

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

Ulnar nerve palsy

8

Ulnar nerve palsy

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

Mechanisms of ulnar nerve palsy (2)

Elbow trauma
Cubital tunnel syndrome

10

Froment's sign

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

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

Radial nerve palsy

12

Radial nerve palsy

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

13

Mechanisms of radial nerve injury (2)

Humeral shaft fracture
"Saturday night palsy"- compression of the nerve against the humerus

14

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

Erbs palsy

15

Features of Erb's palsy (2)

Sensory loss down lateral arm
Arm in "waiter's tip" posiiton (arm internally rotated and forearm pronated)

16

Klumpke's palsy

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

17

Features of Klumple's palsy (3)

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

18

May co-exist with Klumpke's palsy

Horner syndrome