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Flashcards in Brachial Plexus Deck (107)
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1

List rotator cuff muscles and their nerve supply

1. Supraspinatus - innervated by suprascapular nerve (C5,6)

2. Infraspinatus - innervated by suprascapular nerve (C5,6)

3. Teres minor - axillary nerve

4. subscapularis - subscapular nerve

2

dorsal scapular nerve innervates

C5
Rhomboid major
Rhomboid minor
Levator scapula muscle

3

Long thoracic nerve of Bell

C5- C7
Serrates anterior

4

suprascapular nerve

C5,6
- supraspinatus
- infraspinatus

5

nerve to subclavius

C5 ,6
- subclavian muscle

6

lateral pectoral nerve

C5,6,7
- pectorals major

7

inferior sub scapular nerve

subscapularis M
Teresa Major
C5,6,7

8

superior ubscapular nerve

C5,,6,7
- subscapular muscle

9

thoracic dorsal nerve

C5,6,7
- latissimus dorsal muscle

10

What nerves come off the medial division

1. medial cutaneous nerve of arm
2. medial cutaneous nerve of forearm
3. medial pectoral nerve
4. median nerve
3. ulner nerve

11

what nerves come from posterior division

(C5, T 1
1. inferior sub scapular nerve
2.superior sub scapular nerve
3. thoracodorsal nerve
4. axillary nerve
5. radial nerve

12

what nerves come from lateral division

1. lateral pectoral nerve
2. musculocutanous nerve
3. median nerve

13

what muscles does the musculocutanous nerve supplies

biceps brachii
brachialis
corocobrachialis

14

what muscle does the axillary muscle supply

teres minor
deltoid

15

median nerve - 5 sites of compression

1. brachial artery aneurysm
2. Struthers Ligamanet
3. lacerates fibrosus
4. Pronator Teres Syndrome
5. Anterior interosseous nerve
6. CTS

16

Struthers Ligamanet

Struthers' ligament is a feature of human anatomy consisting of a band of connective tissue at the medial aspect of the distal humerus. It courses from the supracondylar process of the humerus (also known as avian spur) to the medial humeral epicondyle (compress median nerve) .

17

lacertus fibrosus

bicipital aponeurosis (AKA lacertus fibrosus) is a broad aponeurosis of the biceps brachii which is located in the cubital fossa of the elbow and separates superficial from deep structures in much of the fossa. The bicipital aponeurosis originates from the distal insertion of the biceps brachii.

18

motor supply of Median Nerve

PT
FCR
Palmer's
FDS
AIN* ( unable to make okay sign)

LOAF

Palmar cutaneous branch - before going through carpal tunnel

19

AIN supplies

AIN branch of median nerve
Supplies
- FDP
- FPL
- PQ ( Pronator quadratus)

20

Sensory distribution of Median nerve

1. medial palmar aspect of hand
2. distal end of 1,2,3 digit and half of 4th
3. palmar
5. thenar eminence

21

Ulnar nerve branches

FCU
FDP ( 3rd ,4th)
Abductor DMinimi
Opposes DM
Flexor DM

Lumbricles
Interossei
FPB
abductor pollicus

dorsal ulnar cutaneous
digital branch

22

Ulnar sensory

1. palmar aspect ( 1/2 4th, 5th)
2. dorsal - 4th and 5th

23

Ulnar compression sites

1. axillary artery
2. Arcade of struther
3. retrocondylar groove (medial epicotyl and olecranon
4. Cubital tunnel in forarm ( 2 muscles FCU and PDP ) - medial
5. Guyons Canal (hook of hamate and piriformis )

24

Arcade of struther

in middle of the arm, ulnar nerve pierces medial intermuscular septum and descends in front of the medial head of the triceps;
- in 70-80% of individuals, nerve passes under arcade of Struthers

25

radial nerve branches

1. triceps
2. Anoconeous
3. Brachioradial
4. ECRL
5. ECRB

becomes the posterior interosseous nerve

26

posterior interosseous nerve branche

Suprascapular
ECU
ED comminus
EDMinimi
Abductor PL
EPL
EPB
EIP

27

Radial nerve compression

1. Axillary artery - crutch
2. long and medial head of triceps
3. SPIRAL GROOCE
4. Brachialis and brachioradialis

28

Saturday night Palsy

wrist drop
finger drop
spares elbow extension

29

Sensation of radial nerve

PCNA
PCNF
Inferior lateral Cutaneous N of arm
Superficial branch - dorsal of hand

30

innervation APL

radial C7-C8