Upper Limb Nerve Injuries

Question 1

Roots of the brachial plexus are deep to which muscle?

Answer 1

Anterior scalene muscle

Question 2

Phrenic nerve is a part of the ____________ plexus

Answer 2

Cervical

Question 3

Does the phrenic nerve branch a root, trunk or cord? Which nerve fibers supply this nerve?

Answer 3

Root

C4,C5, C6

Question 4

Does the dorsal scapular nerve branch a root, trunk or cord? Which nerve fibers supply this nerve?

Answer 4

C5 Root

C4, C5

Question 6

Does the suprascapular nerve branch a root, trunk or cord? Which nerve fibers supply this nerve?

Answer 6

Upper Trunk

C5, C6

Question 7

Does the nerve to subclavis branch from a root, trunk or cord? Which nerve fibers supply this nerve?

Answer 7

Upper Trunk

C5, C6

Question 8

Does the lateral pectoral nerve branch from a root, trunk or cord? Which nerve fibers supply this nerve?

Answer 8

Lateral Cord

C5, C6, C7

Question 9

Does the musculocutaneous nerve branch from a root, trunk or cord? Which nerve fibers supply this nerve?

Answer 9

Lateral Cord

C5, C6, C7

Question 10

Does the upper subscapular nerve branch from a root, trunk or cord? Which nerve fibers supply this nerve?

Answer 10

Posterior Cord

C5, C6

Question 11

Does the thoracodorsal nerve branch from a root, trunk or cord? Which nerve fibers supply this nerve?

Answer 11

Posterior Cord

C6, C7, C8

Question 12

Does the lower subscapular nerve branch from a root, trunk or cord? Which nerve fibers supply this nerve?

Answer 12

Posterior cord

C5, C6

Question 13

Does the axillary nerve branch from a root, trunk or cord? Which nerve fibers supply this nerve?

Answer 13

Posterior Cord

C5, C6

Question 14

Does the median nerve branch from a root, trunk or cord? Which nerve fibers supply this nerve?

Answer 14

C5, C6 C7, C8, T1

Question 15

Does the radial nerve branch from a root, trunk or cord? Which nerve fibers supply this nerve?

Answer 15

Posterior cord

C5, C6, C7, C8, T1

Question 16

Does the ulnar nerve branch from a root, trunk or cord? Which nerve fibers supply this nerve?

Answer 16

Medial Cord

C8, T1

Question 17

Dermatomal vs. Cutaneous Innervation

Answer 17

A dermatome is an area of skin in which sensory nerves derive from a single spinal nerve root

Cutaneous innervation refers to the area of the skin which is supplied by a specific cutaneous nerve.

Question 18

Avulsion

Answer 18

Most severe type of brachial plexus injury, nerve is torn from spine

Question 19

Rupture

Answer 19

Nerve is torn but not at the spinal attachment

Question 20

Neuroma

Answer 20

Nerve has torn and healed but scar tissue puts pressure on injured nerve and prevents it from conducting signals to the muscles

Question 21

Neuropraxia

Answer 21

Nerve has been damaged but not torn; most common type of brachial plexus injury

Question 22

Stingers or Burners

Answer 22

Stingers occur with compression or overstretching of the nerves

Question 24

Which nerve roots are the mostly commonly affected by injury?

Answer 24

C5 and C6

Question 25

Which nerve fibers are affected in Erb’s Palsy?

Answer 25

C5, C6

Question 26

Paralysis of the upper plexus

Answer 26

Erb’s Palsy

Question 27

Paralysis of the lower brachial plexus

Answer 27

Klumpe’s Palsy

Question 28

Which nerve fibers are affected in Klumpke’s Palsy?

Answer 28

C7, C8, T1

Question 29

What is the most severe manifestation of Klumpke’s Palsy?

Answer 29

Claw Hand

Question 30

The more ____________ a muscle is the more likely it is that the nerve fibers are derived from the upper brachial plexus

Answer 30

proximal