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Backup Gen > Upper Limb > Flashcards

Upper Limb Flashcards

1
Q

anterior interosseous nerve classically innervates 2.5 muscles

A

Flexor pollicis longus o Pronator quadratus o The radial half of flexor digitorum profundus (the lateral two out of the four tendons).

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2
Q

Extensor loss without sensory

A

Posterior interosseous – extensor loss without sensory, radial entrapped in the arcade of Frohse

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3
Q

Extensor retinaculum - how many tunnels

A

Extensor retinaculum - 6 tunnels

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4
Q

Klumpke’s Palsy

A

C8, T1

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5
Q

· Axillary nerve – C5,C6, - through quadrangular space and then…

A

o lower border of subscapularis

o Posterior to the axillary artery

o With the posterior circumflex humeral vessels

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6
Q

Erb’s palsy

A

C5/C6 Arm is hanging loose on the side, pronated and medially rotated

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7
Q

Lac next to pisiform

A

ulnar artery

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8
Q

interossei – how many of which and supplied by

A

3 Palmar + 4 dorsal interossei

ulnar nerve

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9
Q

Lumbricals nerve supplied

A

1+2 Median Nerve, 3+4 Deep branch ulnar

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10
Q

Subscapularis inserts onto

A

lesser tuberosity

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11
Q

FDP – deepest + closest to

A

hamate

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12
Q

PAD/DAP

A

Palmar interossei adduct / Dorsal Abduct (Deep Ulnar Nerve)

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13
Q

Cephalic vein – superficial to most

A

most facia and tendons

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14
Q

Separates ulnar artery from median nerve

A

Pronator teres

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15
Q

Abductor pollicus longus supplied by the..

A

posterior interosseous branch of the radial nerve

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16
Q

Superficial radial branch relative to wrist

A

midline of wrist.

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17
Q

Suprascapular nerve supplies…

A

supra + infraspinatus

C5,C6

Only nerve trunk

cannot initiate shoulder abduction

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18
Q

Kumpke’s supply and appearance

A

Kumpke – C8/T1:

Medial forearm sensation,

wrist extension,

Horner’s + Claw hand,

MCP extended, IP flexed

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19
Q

recurrent ant shoulder dislocation

A

Bankart lesion – anterior inferior glenoid lambrum defect

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20
Q

winging of the scapula

A

C5,6,7 Serratus anterior

Wings to heaven

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21
Q

Supinator

A

Radial nerve

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22
Q

Superior joint capsule inserts into

A

anatomical neck of humerus

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23
Q

Branches that arise from the lateral cord

A

LLM

Lateral pectoral nerve: innervates pectoralis major

Lateral root of the median nerve: innervates forearm flexors (except FCU and ulnar half of FDP) and ‘LOAF’ muscles in the hand

Musculocutaneous nerve: innervates biceps brachii, brachialis and coracobrachialis. It continues as the lateral cutaneous nerve of the forearm

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24
Q

Branches that arise from the medial cord:

A

MMMU

Medial pectoral nerve: Innervates pectoralis minor and part of pectoralis major
•Medial cutaneous nerve of the arm: Supplies skin on medial side of arm
•Medial cutaneous nerve of the forearm: Supplies skin on medial side of forearm
•Medial root of the median nerve: Innervates forearm flexors (except FCU and ulnar half of FDP) and ‘LOAF’ muscles in the hand
•Ulnar nerve: Innervates FCU, ulnar half of FDP, intrinsic muscles in hand except ‘LOAF’

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25
Q

Name the muscles which attach to the coracoid process.

A

CPS

Coracobrachialis

Pectoralis minor

Short head of biceps

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26
Q

Name the muscles that make up the rotator cuff and their innervation.

A

SITS

  • Supraspinatus:Suprascapular nerve (C5, C6)
  • Infraspinatus: Suprascapular nerve (C5, C6)
  • Teres minor: Axillary nerve (C5, C6)
  • Subscapularis : Upper and Lower Subscapular nerves (C5, C6)
27
Q

Name the muscles responsible for abduction at the shoulder.

A

Supraspinatus initiates abduction from 0 -15 degrees.

The lateral fibres of deltoid abduct the shoulder from 15 —100 degrees.

Further rotation of the shoulder is by rotation of the scapula on the thoracic wall aided by trapezius and levator scapulae.

28
Q

Posterior Cord (ULNAR)

A
  • Upper subscapular nerve
  • Lower subscapular nerve
  • Nerve to latissmus dorsi (thoracodorsal)
  • Axillary nerve
  • Radial nerve
29
Q

Name the muscles innervated by branches from the posterio cord

A
  • Subscapularis: Innervated by the upper and lower subscapular nerves
  • Latissimus dorsi: Innervated by the thoracodorsal nerve
  • Teres major: Innervated by the lower scapular nerve
  • Deltoid and teres minor: Innervated by the axillary nerve
  • Triceps and all extensors of the forearm: Innervated by the radial nerve
30
Q

What the four nerves pass between

A
  • Median nerve: Passes between the two heads of pronator teres.
  • Ulnar nerve: Enters the forearm between the two heads of flexor carpi ulnaris.
  • Musculocutaneous nerve: Initially pierces the coracobrachialis and then lies between the biceps and brachialis in the distal arm.
  • Radial nerve: Lies between the two heads of supinator.
31
Q

What are the boundaries of the axilla?

A
  • Apex: Cervicoaxillary canal (where clavicle, scapula and 1st rib converge)
  • Anterior: Pectoralis major and minor, subclavius
  • Base/Posterior: Superiorly to inferiorly: subscapularis, teres major, latissimus dorsi
  • Medial: Serratus anterior, upper three ribs, intercostal spaces
  • Lateral: Intertubercular groove of the humerus, short head of biceps, coracobrachialis tendon
32
Q

Lymph drainage of axilla

A
  • *Lateral (humeral) group:** • Located posteromedial to axillary vein
  • *Receives drainage from upper limb**
  • *Anterior (pectoral) group:** • Located inferior to pectoralis minor along the course of lateral thoracic vessels. •
  • *Receives drainage from abdominal wall, chest and breast**
  • *Posterior (subscapular) group:** • Located in the posterior axillary wall along with subscapular vessels
  • *• Receives lymph from back, shoulder and neck**
  • *Central group:** • Located in the axillary fat
  • *• Receives drainage from lateral, posterior and anterior group of nodes**

Apical group: • Most superior group of nodes • Receives drainage from all groups of nodes in addition to lymphatic vessels that accompany the cephalic vein and the vessels that drain the superior region of the breast.

33
Q

Basilic vein pierces

A

brachial fascia

34
Q

Axillary nerve winds around

A

surgical neck of humerus

35
Q

Radial nerve

A

under Teres Major as it enters axilla

36
Q

What are the boundaries of the quadrangular space?

A
  • Lateral: humerus
  • Medial: long head of triceps
  • Superior: teres minor
  • Inferior: teres major

Name the structures that pass through the quadrangular space
•Axillary nerve

•Posterior circumflex humeral artery

37
Q

Three heads of triceps…

A

The long head - infraglenoid tubercle of the scapula. It extends distally anterior to the teres minor and posterior to the teres major.[1]

The medial head arises proximally in the humerus, just inferior to the groove of the radial nerve; from the dorsal (back) surface of the humerus; from the medial intermuscular septum; and its distal part also arises from the lateral intermuscular septum.

The lateral head - dorsal surface of the humerus, lateral and proximal to the groove of the radial nerve, from the greater tubercle down to the region of the lateral intermuscular septum.

Fibres converge to a single tendon to insert onto the olecranon process of the ulna

38
Q

Radial nerve relation to condyles

A

Radial nerve – anterolateral in supracondylar area

39
Q

Scaphoid blood supples

A

dorsal carpal branch of radial artery

40
Q

Lattimus dorsi blood supply

A

thoracodorsal artery

ß post branch of subscapular

ß 3rd axillary branch

41
Q

Boundaries and significance of triangular interval

A

Superior: teres major

Medial: long head of triceps

Lateral: humerus

Note: the triangular interval is also referred to as the lateral triangular space, lower triangular space, and triceps hiatus.

The radial nerve and profunda brachii artery pass through the triangular interval, on their way to the posterior compartment of the arm.

42
Q

Structures that pierce the clavipectoral fascia:

A
  1. Cephalic vein
  2. Lymphatics (from the infraclavicular nodes to the apical nodes of the axilla)
  3. Lateral pectoral nerve
  4. Thoraco-acromial artery and vein
43
Q

What is ‘painful arc’ syndrome?

A

Inflammation of supraspinatus (supraspinatus tendinitis) and of the subacromial bursa results in painful abduction between 60 and 120 degrees when the inflamed tendon is compressed against the acromion.

44
Q

Frozen Shoulder

A
45
Q

The following muscles arise from the common extensor origin at the lateral epicondyle of the humerus except:

A. Extensor carpi radialis brevis (ECRB)

B. Extensor indicis proprius (EIP)

C. Extensor digitorum communis (EDC)

D. Extensor digiti minimi (EDM)

E. Extensor carpi ulnaris (ECU)

A

B. Extensor indicis proprius (EIP)

These do arise from the common extensor origin at the lateral epicondyle of the humerus

Extensor carpi radialis brevis (ECRB)

Extensor digitorum communis (EDC)

Extensor digiti minimi (EDM)

Extensor carpi ulnaris (ECU)

46
Q

Name the nerves which can be injured after a fracture of the humerus.

A
  • Axillary nerve: # Surgical neck of the humerus
  • Radial nerve: # Shaft of humerus at the junction between the proximal 2/3rd and distal 1/3rd (at the level of spiral grove)
  • Ulnar nerve: Medial epicondyle, Galeazzi #
  • Median nerve and AIN: Supracondylar #, Galeazzi #
  • PIN: Radial head, proximal third of radius, Monteggia #
47
Q

Muscles supplied by PIN

A

4 Common extensors
ECRB •
Extensor digitorum communis (EDC)
Extensor digiti minimi (EDM)
Extensor carpi ulnaris (ECU)

5 Deep extensors
Supinator
Abductor pollicis longus (APL)
Extensor pollicus longus and brevis (EPL/EPB)
Extensor indicis proprius (EIP)
(sensory fibres to dorsal wrist capsule but no cutaneous innervation)

48
Q

Anterior interosseous Syndrome

A
49
Q

PIN Syndrome

A
50
Q

Jersey Finger

A
51
Q

Boutonniere

A
52
Q

RA

A
53
Q

Nodes

A
54
Q

Pisform can compress

A

Ulnar Nerve - which is medial to ulnar artery

55
Q

Dermatomes of upper limb

A

C4- Shoulder tip

CS- Lateral aspect of arm

C6- Lateral aspect of forearm, thumb and index finger

C7- Middle finger

C8- Ring, little fingers and medial aspect of hand and forearm

T1- Medial aspect of upper arm and axilla

56
Q

Borders of anatomical snuff box

A

Ulnar (medial) border: Tendon of the extensor pollicis longus.

Radial (lateral) border: Tendons of the extensor pollicis brevis and abductor pollicis longus.

Proximal border: Styloid process of the radius.

Floor: Carpal bones; scaphoid and trapezium.

Roof: Skin

57
Q

Non-traumatic EPL Rupture

A

Rheumatoid arthritis and

Previous Colle’s And Smith’s fracture

58
Q

Ulnar nerve path

A

Ulnar nerve between heads of FCU, medial to FDP, muscles except for LOAF

59
Q

Axillary vein

A

Lies at the apex of the axilla, it is the continuation of the basilic vein. Becomes the subclavian vein at the outer border of the first rib.

60
Q

Musculocutaneous nerve supplies

A

Musculocutaneous nerve supplies BBC

Brachioradialis, biceps brachii and coracobrachialis

61
Q

Hill Sach’s Lesions

A

Hill Sach’s Lesions – Glenohumeral dislocation

62
Q

Nerve APL

A

PIN

63
Q

Radial and PIN supplies

A

supplies all the muscles on the radial side and dorsal surface of the forearm, except the anconaeus, brachioradialis, extensor carpi radialis longus.

Deep branch becomes PIN after exiting supinator

Deep - ECRB + Supinator
Radial - Anconeus, Brachioradialis + ECRL

PIN - the rest - INCLUDING APL

Backup Gen (15 decks)

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