MSK Nerves pg 419-423

Question 1

a boy brought in because he cannot do fine movements of his right hand. He was climbing a tree and he fell from a branch. He tried to grab a branch with his right hand. what injury?

1. radial
2. axillary
3. lower trunk of brachial plexsus
4. suprascapular nerve

Answer 1

3

Question 2

Same boy brought in again this time by his nanny. She said as they were taking a walk, he did not see a huge hole so he almost fell in, so she had to pull the child up while his hand was extended and pronated, what nerve injury?
1, median
2. radial
3. ulnar
4. axillary

Answer 2

radial

nursemaid elbow

Question 3

lets talk about different fractures of humerus!

1. supracondylar
2. surgical
3. midshaft

Answer 3

1. median
2. axillary
3. radial

Question 4

1. lateral epicondyle fracture

2. medial epicondyle fracture

Answer 4

1. later is median

2. medial is ulnar

Question 5

hook of hamate fracture?

Answer 5

ulnar

Question 6

a football player, blow to his shoulder while he was trying to throw a ball. his deltioid is flattened, no >15 degree abduction. What kind of sensation loss?

Answer 6

axillary N

loss of sensation over deltoid and lateral arm

Question 7

you are examining a patient and you know he cannot flex his elbow (forearm flexors injury). you check the nerves and his musculocutaneous nerve is fine. What muscle is injured?

Answer 7

brachioradialis by radial nerve

MC is for biceps brachii and brachialis

Question 8

name 3 muscles that MC innervate

Answer 8

brachialis
coracobrachialis
bicep brachii

Question 9

name 3 muscles of forearm flexors

Answer 9

Brachialis, Bicep brachii, brachioradialis

Question 10

interscalene nerve block was performed while trying to repair upper trunk injury, a patient suddenly develop ipsilateral diaphragmatic paralysis. why?

Answer 10

phrenic passes through interscalene sheath