Neuro 9: Peripheral nerves Flashcards

1
Q

C6 Sensory Level

A

Thumb

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2
Q

C7 Sensory Level

A

Middle finger

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3
Q

C8 sensory level

A

Little finger/ 5th digit

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4
Q

T4 Sensory level

A

Nipple

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5
Q

T6 Sensory level

A

Xiphoid

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6
Q

T10 Sensory Level

A

Umbilicus

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7
Q

L1 Sensory level

A

Inguinal ligament

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8
Q

L4 Sensory level

A

Medial leg/malleolus

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9
Q

L5 Sensory level

A

Dorsum of foot, toes 2-4

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10
Q

S1 Sensory level

A

Lateral malleolus, little toe

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11
Q

Muscle stretch C5

A

Biceps

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12
Q

Muscle stretch C6

A

Brachioradialis

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13
Q

Muscle stretch C7

A

Triceps

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14
Q

Stretch reflex L4

A

Quads

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15
Q

Stretch reflex S1

A

Achilles

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16
Q

Muscle stretch reflex scale

A

0= Absent
1= Trace/ weak
2= Normal
3= Hyper
4= Clonus

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17
Q

Radial nerve motor

A

Extension of all arm, wrist and proximal finger joints

Thumb abduction

Forearm supination

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18
Q

Median nerve motor

A

Thumb flexion and oppostion

Digit 2/3 flexion

Wrist flexion

Forarm pronation

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19
Q

Ulnar Nerve motor

A

Finger adduction

Wrist flexion

Digits 4/5 flexion

Wrist adduction

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20
Q

Axillary nerve motor

A

Abduction of shoulder beyond 15 deg

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21
Q

Musculocutaneous motor

A

Elbow flexion

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22
Q

Intrinsic muscle of hand nerve roots

A

C8/T1

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23
Q

Femoral nerve motor

A

Hip flexion

Knee extension

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24
Q

Obturator nerve motor

A

Thigh adduction

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25
Q

Sciatic nerve motor

A

Knee flexion

26
Q

Superficial fibular motor

A

Foot eversion

27
Q

Tibial nerve motor

A

Foot plantar flexion

Foot inversion

Toe flexion

28
Q

Deep fibular nerve motor

A

Foot dorsiflexion

Toe extension

29
Q

Radial sensory

A
30
Q

Median nerve sensory

A
31
Q

Ulnar nerve sensory

A
32
Q

Axillary nerve sensory

A
33
Q

Musculocutaneous nerve sensory

A
34
Q

Femoral nerve sensory

A
35
Q

Obturator nerve sensory

A
36
Q

Superficial fibular nerve sensory

A
37
Q

Deep fibular nerve sensory

A
38
Q

Upper trunk of brachial plexus injury

A

ERB-DUCHENNE Palsy

WAITER’s Tip

39
Q

Lower trunk brachial plexus injury

A

KLUMPKES Palsy

Claw hand, wrist drop

40
Q

Causes of lower brachial plexus trunk injury

A

Thoracic outlet syndrome: compressed between clavicle and first rib

Pancoast syndrome: apical lung tumor

Forceful abduction

41
Q

Axillary neuropathy cause and S/S

A

Proximal humerus fracture/ dislocation

Deltoid weakness and shoulder numbness

42
Q

Axillary neuropathy vs C5 radiculopathy

A

Axillary: no biceps involvement

43
Q

Brachial plexitis

A

Inflammation of brachial plexus causes arm weakness and burning shoulder/neck pain

44
Q

Radial Neuropathy

A

“saturday night palsy”

Wrist drop

45
Q

Handcuff neuropathy nerve and S/S

A

Cheiralgia parasthetica: isolated dorsal lateral hand sensory loss

Superficial radial nerve

46
Q

Median neuropathy

A

Honeymooner’s palsy

Weakness in wrist and 2/3 digit flexion (preachers hand)

47
Q

Carpal tunnel syndrome

A

Median nerve compression as it passes with hand tendons

48
Q

Ulnar palsy

A

Ulnar sensory loss and ulnar claw

4/5 digits down with sensory loss

49
Q

Median and ulnar palsy

A

Simian hand

ape together strong

Palm sensation gone

50
Q

Ulnar neuropathy cause and signs

A

Medial epicondyle injury

Ulnar claw

51
Q

Femoral neuropathy signs

A

Weakness in thigh flexion and knee extension, patellar reflex loss, anterior thigh sensory loss

52
Q

Femoral neuropathy vs L3/L4 radiculopathy

A

L3/L4 will have weakness in adduction of thigh

53
Q

Sciatic neuropathy causes and signs

A

Causes: posterior hip dislocation, acetabular fracture, buttocks injections in wrong place

Weakness in all foot and ankle muscles and knee flexion

Loss of achilles reflex

54
Q

Fibular nerve palsy signs and causes

A

Causes: forcible foot inversion, compression, trauma

FOOT DROP

dorsolateral foot and shin sensory loss

55
Q

Obturator nerve palsy

A

Gait instability

56
Q

Slowed nerve conduction cause

A

Demyelination

57
Q

Decreased nerve conduction amplitude cause

A

axonal damage

58
Q

Weakness at multiple unrelated locations with no sensory issues

A

think myasthenia gravis

59
Q

Repetitive stimulation of nerve conduction test why

A

In patients with myasthenia gravis, decrease in amplitude due to to decreased ATCH receptors

60
Q

Guillain Barre signs and symptoms

A

Progressive motor and sensory issues

Acuted demyelination often following infection in HIV