Upper Extremities Injury

Question 1

BRACHIAL PLEXUS LATERAL CORD NERVES

Answer 1

Musculocutaneous Nerve
Lateral pectoral nerve
Lateral root of the Median Nerve

Question 2

BRACHIAL PLEXUS MEDIAL CORD NERVES

Answer 2

Medial Cutaneous n of the arm
Medial Pectoral Nerve
Medial Cutaneous n of forearm
Medial Root of the MEdian nerve
Ulnar nerve

Question 3

BRACHIAL PLEXUS POSTERIOR CORD NERVES

Answer 3

Axillary Nerve
Upper and Lower Subscapular nerve
Thoracodorsal Nerve
Radial Nerve

Question 4

Long Thoracic Nerve

Answer 4

C5-C7
Innervates the Serratus Anterior
Usually injured during surgery around the axilla
Winged Scapula and limited overhead use and abduction

Question 5

Axillary Nerve

Answer 5

C5-C6
Innervates the deltoid muscle (major abductor)
Sensory on skin over deltoid
Injured during dislocation

Question 6

Musculocutaneous Nerver

Answer 6

C5-C7
Innervates Coracobrachialis, biceps, brachialis
Sensory of Lateral cutaneous

Question 7

Radial Nerve

Answer 7

C5-T1
Innervates Posterior muscles of forearm to extend elbow and wrist, also supination.
presentation depends on where injury occurs
Crutch Injury/saturday night palsy if upward pressure in armpit
midshaft humerus leads to sensory and wrist extension

Question 8

Median Nerve

Answer 8

C5-T1
Innervates muscles of anterior forearm and thenars + 1st and 2nd lumbricals
Pronates the forearm and flexes the wrist
APE HAND (cant use thenar muscles)
Sign Of Benediction (cant flex digits 2,3) (proximal)
Median Claw (Resting claw hand from distal injury)

Question 9

What sensory group is spared in carpal tunnel syndrome

Answer 9

Thenar sensation (nerve runs outside of tunnel)

Question 10

Ulnar Nerve

Answer 10

C8-T1
Also has a claw
throwing sport injury
Hook of hamate injuries

Question 11

Erb Palsy

Answer 11

Upper Brachial Plexus Injury
C5C6 Roots
From trauma or difficult birth
Waiters tip position

Question 12

Klumpke Palsy

Answer 12

Lower Brachial Plexus Lesion

Think of a guy grabbing at tree limb while falling