Lec 07: Peripheral Nerve Injuries Flashcards Preview

[OS 211] Neuro Exam 1 Flo Cluster > Lec 07: Peripheral Nerve Injuries > Flashcards

Flashcards in Lec 07: Peripheral Nerve Injuries Deck (25)
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1
Q

Identify the Seddon’s Classification of peripheral nerve injury being described.

Usually due to compression.

a. Neuropraxia
b. Axonotmesis
c. Neurotmesis
d. AOTA
e. NOTA

A

a. Neuropraxia

2
Q

Identify the Seddon’s Classification of peripheral nerve injury being described.

Reversible loss of function.

a. Neuropraxia
b. Axonotmesis
c. Neurotmesis
d. AOTA
e. NOTA

A

a. Neuropraxia

3
Q

Identify the Seddon’s Classification of peripheral nerve injury being described.

Shallow damage or death of the axon. Damage or death is from the axon to its most distal part.

a. Neuropraxia
b. Axonotmesis
c. Neurotmesis
d. AOTA
e. NOTA

A

b. Axonotmesis

4
Q

Identify the Seddon’s Classification of peripheral nerve injury being described.

Usually caused by crush injuries.

a. Neuropraxia
b. Axonotmesis
c. Neurotmesis
d. AOTA
e. NOTA

A

b. Axonotmesis

5
Q

Identify the Seddon’s Classification of peripheral nerve injury being described.

Honeymoon’s Palsy

a. Neuropraxia
b. Axonotmesis
c. Neurotmesis
d. AOTA
e. NOTA

A

a. Neuropraxia.

Wife laid down on of the husband’s arm after making love compresses the radial nerve, wound around the humerus. -> Myelin sheath damage leading to wrist drop sign

6
Q

Axonal regeneration is how many mm per day?

A

1.5 to 2mm

7
Q

Identify the Seddon’s Classification of peripheral nerve injury being described.

Total injury to the axon and connective tissue (endoneurium) with low possibility of recovery, meural sheath and nutrition compromised.

a. Neuropraxia
b. Axonotmesis
c. Neurotmesis
d. AOTA
e. NOTA

A

c. Neurotmesis

8
Q

Identify the Seddon’s Classification of peripheral nerve injury being described.

Most severe.

a. Neuropraxia
b. Axonotmesis
c. Neurotmesis
d. AOTA
e. NOTA

A

c. Neurotmesis

9
Q

Identify the Seddon’s Classification of peripheral nerve injury being described.

With high incidence of neuroma formation.

a. Neuropraxia
b. Axonotmesis
c. Neurotmesis
d. b & c only
e. NOTA

A

c. Neurotmesis

10
Q

Also known as anterograde or orthograde degeneration of peripheral nerves.

A

Wallerian degeneration

11
Q

Identify the Seddon’s Classification of peripheral nerve injury being described.

Results to failure of conduction.

a. Neuropraxia
b. Axonotmesis
c. Neurotmesis
d. b & c only
e. NOTA

A

d. b&c only

12
Q

Identify the Seddon’s Classification of peripheral nerve injury being described.

Equivalent to the Second Degree in Sunderland’s classification

a. Neuropraxia
b. Axonotmesis
c. Neurotmesis
d. b & c only
e. NOTA

A

b. Axonotmesis

13
Q

Identify the Seddon’s Classification of peripheral nerve injury being described.

Equivalent to the 4th Degree in Sunderland’s classification.

a. Neuropraxia
b. Axonotmesis
c. Neurotmesis
d. b & c only
e. NOTA

A

e. NOTA

Sunderland - Seddon

1st Degree - Neuropraxia
2nd Degree - Axonotmesis
3rd Degree - excessive scarring that hinders axon regeneration
4th Degree - Scar build-up completely blocks nerve regeneration
5th Degree - Neurotmesis

14
Q

Weakness of this muscle indicates a proximal median nerve injury.

A

Pronator teres

15
Q

Injury anywhere along the median nerve leads to weakness of this muscle.

A

Adductor pollicis brevis

16
Q

The following muscles are innervated by the anterior interosseous nerve, EXCEPT:

a. pronator quadratus
b. flexor digitorum profundus
c. flexor pollicis longus
d. NOTA

A

d. NOTA

17
Q

The most common peripheral nerve injury.

A

Carpal Tunnel Syndrome

18
Q

Median nerve entrapment in the supracondylar process results in motor deficits in the following muscles, EXCEPT:

a. flexor carpi radialis
b. lumbricals
c. thenar muscles
d. flexor digitorum superficialis
e. NOTA

A

e. NOTA

19
Q

Which nerve is entrapped if there is a positive froment’s sign.

A

ulnar nerve.

20
Q

The most commonly impinged in Brachial Plexopathy.

A

C7

21
Q

An upper trunk palsy involving C5 and C6 which frequently occurs as a result of traumatic birth injuries (ex. shoulder dystocia) due to compression, traction or tearing.

a. Erb-Duchenne Palsy
b. Klumpke’s Palsy
c. Meralgia Paresthetica
d. NOTA

A

a. Erb-Duchenne Palsy.
* Klumpke’s Palsy - A lower plexus palsy involving C8 to T1 nerve roots (median and ulnar nerve involvement) which may result into claw hand deformities.
* Meralgia Paresthetica - pure sensory deficit of lateral thigh due to compression of the lateral femoral cutaneous nerve, often by the inguinal ligament. (Calvin Klein syndrome - caused by ill-fitting pants)

22
Q

In this kind of GAIT, there is lateral displacement as one makes a step; the muscle gives up leading to the waddling gait. There is weakness of the gluteus medius leading to an exaggerated “kembot” when ambulating.

A

Mae West Gait

23
Q

Gold standard for diagnosing nerve entrapment/impingement syndromes.

A

EMG-NCV

24
Q

The best diagnostic tool for visualizing impingement.

A

MRI

25
Q

Works through the gate-control theory by stimulating Alpha-beta neurons until they become numb so that when the pain stimulus passing through the c-fiber is present, it will be ignored.

A

Transcutaneous electrical nerve stimulation (TENS)