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MSK Revision > Nerve Palsies > Flashcards

Nerve Palsies Flashcards

1
Q

What is HILTON’s law?

A

That a sensory nerve supplying a JOINT also innervates the MUSCLES that innervate the joint and the SKIn overlying the joint

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2
Q

What causes a total brachial Plexus Palsy? C5-T1

A

Damage during childbirth

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3
Q

What root numbers are damaged in Erb’s Palsy?

A

C 5,6, 7

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4
Q

What part of the brachial plexus is damaged in Erb’s Palsy?

A

Superior brachial plexus

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5
Q

What is a common cause of Erb’s Palsy?

A

Obstetric birthing complication when traction is applied

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6
Q

What are the clinical features of Erb’s palsy?

A

Waiter’s tip position

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7
Q

What is the position of the Shoulder, elbow and wrist

A

Adducted and internally rotated
Extended and pronated
Flexed

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8
Q

Which nerve roots are affected in Klumpke’s palsy?

A

C8/T1

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9
Q

Which section of the brachial plexus is affected in Klumpke’s palsy?

A

Lower section

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10
Q

How is a Klumpke’s palsy caused?

A

If an upper limp is delivered 1st and traction applied

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11
Q

What are the clinical features of Klumpke’s palsy?

A

Claw hand - the small muscles of the hands are affected, the forearm is supinated, the wrist and fingers flexed

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12
Q

What nerve roots are affected in a musculocutaneous palsy?

A

C 5,6,7

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13
Q

Which part o the cord is affected in the Musculocutaneuos nerve palsy?

A

Lateral

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14
Q

Which muscle does the musculocutaneuos nerve piece and then run between?

A

Coracobrachialis

Biceps brachia and brachial

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15
Q

What joint does the muscu N supply? And what does it terminate at?

A

Elbow joint

Lateral cutaneous nerve to the forearm

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16
Q

What would cause a palsy to the MC nerve?

A

Stab wound to the upper arm

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17
Q

What would be the clinical features of a palsy of the MC nerve?

A

Wasting of the biceps

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18
Q

What roots form the axillary nerve?

A

C5/6

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19
Q

Which part of the cord does it come from?

A

Posterior

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20
Q

What structure does the axillary nerve wrap around?

A

Surgical neck of the humerus

21
Q

What does the axillary nerve supply?

A

The lateral sensation of arm

Deltoid and Teres minor

22
Q

What are 2 causes of damage to the axillary nerve

A

Fracture to the surgical neck of the humerus

Compression by dislocation

23
Q

What are the 2 symptoms of damage to the axillary nerve?

A

Numbness over the badge area

Deltoid wasting

24
Q

What nerve roots make up the RADIAL nerve?

A

C5,6,7,8 and T1

25
Q

Which part of the cord is it from?

A

Posterior

26
Q

What groove does the radial artery run in?

A

Radial groove of the humerus

27
Q

What areas does the radial nerve give sensory supply to?

A

Lower part of arm, posterior forearm and 2/3 dorsum of the hand

28
Q

What are the 2 causes of a radial nerve palsy?

A

Saturday night palsy = fall asleep on it

Fracture of the proximal humerus

29
Q

What is the clinical feature of a radial nerve palsy?

A

Wrist drop

30
Q

What roots make up the median nerve?

A

C5,6,7,8,T1

31
Q

What 2 chords does the median nerve come from?

A

Medial and lateral

32
Q

What sensory supply does the median nerve have?

A

Thenar eminence and the lateral 3 1/2 fingers

33
Q

What motor supply does the median nerve have?

A

LOAF muscles and all the flexors of the forearm except FCU and medial FDP

34
Q

What can cause a palsy of the median nerve?

A

Carpal tuneless compression or fracture of the humerus

35
Q

What is the clinical features of median nerve issues?

A

Hand of Benediction

Carpal tunnel syndrome

36
Q

Ulnar nerve Roots?

A

C7-T1

37
Q

What part of the cord is it form?

A

Medial cord

38
Q

What dies the ulnar nerve supply?

A

Anterior compartment and the HILA muscles of the hand

39
Q

What can cause an injury to the ulnar nerve?

A

That would be fracture of the humerus or compression at the cubital tunnel in the arm

40
Q

What is the symptoms of ulnar nerve compression?

A

Claw hand

41
Q

what are the roots of the sacral plexus?

A

S2-4

42
Q

What are the 3 main branches of the sacral plexus?

A

Superior gluteal nerve
Inferior gluteal nerve
Sciatic nerve

43
Q

What do the following supply?
Superior gluteal nerve
Inferior gluteal nerve
Sciatic nerve

A

Gluteus medius and minimuns
Gluteus maximus
Posterior thigh leg and foot

44
Q

What is the main branch of the sciatic nerve?

A

Common peroneal nerve

45
Q

What does the deep common perineal nerve supply?

A

Anterior complement of the leg

46
Q

What does the Superficial common perineal nerve supply?

A

Lateral leg compartment

47
Q

What does the tibial nerve supply?

A

Posterior leg

48
Q

What is the main branch of the lumbar plexus?

A

Femoral nerve

MSK Revision (14 decks)

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