2.1 - Neuro - PPT Nerve Roots & Peripheral Nerves

Question 1

Describe where the nerve roots exit in relation to their relative vertebrae

Question 2

Describe the different “sections” of the brachial plexus

Question 3

Draw out or describe the brachial plexus

Question 4

When discussing “posterior cord syndrome”, what nerve is primarily affected?

Answer 4

Radial n

Question 5

Describe the UE dermatomes & myotomes

Question 6

Describe the sensory innervation for the major peripheral nerves

Question 7

Describe the nerve roots for the UE reflexes

Question 8

Describe each of the following types of nerve injuries:

Neuropraxia
Axonotmesis
Neurotmesis

Question 9

Spinal Accessory Nerve

Muscle Innervation
Sensory Innervation
Clinical Findings

Question 10

What is lateral winging?
What can cause this?

Question 11

Suprascapular N (C5-6)

Muscle Innervation
Sensory Innervation
Clinical Findings

Question 12

Long Thoracic N (C5-7)

Muscle Innervation
Sensory Innervation
Clinical Findings

Question 13

Musculocutaneous N (C5-6)

Muscle Innervation
Sensory Innervation
Clinical Findings

Question 14

Axillary N (C5-6)

Muscle Innervation
Sensory Innervation
Clinical Findings

Question 15

What is a common nerve injury that can occur with anterior shoulder dislocations?

Answer 15

Axillary N

Question 16

Radial N (C6-T1)

Muscle Innervation
Sensory Innervation
Clinical Findings

Question 17

Posterior Interosseous N

What nerve is this a branch of?
Describe a common location for this nerve to be injured
Describe how to differentiate between dysfunction of this nerve vs the other nerve

Question 18

Describe common / potential MOIs for a radial nerve injury

Question 19

Median N (C5-T1)

Muscle Innervation
Sensory Innervation
Clinical Findings

Question 20

Anterior Interosseus N

What nerve is this a branch of?

Question 21

What special test can be used to identify median N (anterior interosseous N) dysfunction?

Question 22

A patient is unable to bend digits 1-3 while trying to make a fist. What nerve lesion does this likely indicate? Why?

Question 23

Ulnar N (C8-T1)

Muscle Innervation
Sensory Innervation
Clinical Findings

Question 24

What special test can be used to identify a lesion of the ulnar N?

Describe this test

Question 25

Describe the resting hand posture that may be present following an ulnar N lesion

Question 26

What is Erb's Palsy? Describe the posture / positioning found with Erb's Palsy

Question 27

What is Klumpke's Palsy? Describe the hand deformity

Question 28

Clinical Application: What muscle weakness would occur as a result of a mid humeral shaft fracture?

Question 29

What nerve injury is likely to be present with incorrect use of the axillary bar of axillary crutches?

Answer 29

Radial N

Question 30

DDx: Weakness of elbow flexion & wrist ext; diminished brachioradialis reflex

Answer 30

C6 Nerve Root

Question 31

DDx: Sensory loss over webspace of thumb

Answer 31

Radial N

Question 32

DDx: Weakness with shoulder abduction and ER

Answer 32

Axillary N

Question 33

DDx: Weakness with shoulder abduction; sensory loss of anterior forearm; diminished biceps reflex

Answer 33

C5 nerve root

Question 34

DDx: No tip-to-tip pinch of 1st-2nd fingers

Answer 34

Anterior interosseous nerve syndrome (median N)

Question 35

DDx: Deep shoulder pain; weakness w/ ER

Answer 35

Suprascapular N

Question 36

DDx: Ape hand

Answer 36

Median N

Question 37

Describe how a paracentral disc herniation would affect the nerve roots in the lower lumbar spine

Question 38

A patient has an MRI showing a L4-5 paracentral intervertebral disc herniation. What grouping of symptoms is likely to be present? a) Weakness w/ knee extension, paresthesia medial thigh b) Weakness w/ PF, paresthesia dorsum of foot c) Weakness w/ great toe ext, paresthesia dorsum of foot d) Weakness w/ knee flexion, paresthesia medial thigh

Answer 38

C (L5 nerve root)

Question 39

Describe the LE dermatomes & myotomes

Question 40

Femoral N (L2-4) Motor Innervation Sensory Innervation Clinical Findings

Question 41

What can cause a forward trunk lean during gait? Why?

Question 42

What can cause a backwards trunk lean during gait? Why?

Question 43

The saphenous N is a branch of what nerve?

Question 44

Obturator N (L2-4) Motor Innervation Sensory Innervation Clinical Findings

Question 45

Superior Gluteal N (L4-S1) Motor Innervation Sensory Innervation Clinical Findings

Question 46

Inferior Gluteal N (L5-S2) Motor Innervation Sensory Innervation Clinical Findings

Question 47

What are the branches of the sciatic N?

Answer 47

Tibial & common peroneal N

Question 48

Tibial N (L4-S3) Motor Innervation Sensory Innervation Clinical Findings

Question 49

The Sural N is a branch of what peripheral N?

Question 50

Superficial Peroneal N (L4-S2) Motor Innervation Sensory Innervation Clinical Findings

Question 51

Deep Peroneal N (L4-S2) Motor Innervation Sensory Innervation Clinical Findings

Question 52

Describe the actions of tibialis posterior vs fibularis longus

Answer 52

Tib Post - PF, inversion Fib Long - PF, eversion

Question 53

Which muscle would be most helpful to target to limit / correct excessive pronation?

Answer 53

Tibial Posterior

Question 54

Tarsal Tunnel Syndrome Description Clinical Presentation

Question 55

DDx: Weak DF; sensory loss over 1st webspace

Answer 55

Deep Peroneal N

Question 56

DDx: 1+ Patellar tendon reflex; weak hip flexion; loss of sensation on medial malleolus

Answer 56

Femoral N

Question 57

DDx: Weak eversion

Answer 57

Superficial peroneal

Question 58

DDx: Weak toe flexion; lateral foot paresthesia

Answer 58

Tibial N