MSK Anatomy 1 --> Upper Limb Flashcards Preview

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Flashcards in MSK Anatomy 1 --> Upper Limb Deck (67):
1

Sternoclavicular Type of Joint

Synovial joint

2

Sternoclavicular Stabilised by

Costoclavicular ligament

3

Acromioclavicular Type of Joint

Synovial joint

4

Acromioclavicular Stabilised by

Coracoclavicular ligament

5

Serratus Anterior Actions

Damage causes winging of scapula

6

Serratus Anterior Nerve Supply

Long thoracic nerve

7

Trapezius Actions

Elevates, retracts and rotates scapula

8

Trapezius Nerve Supply

Accessory nerve

9

Levator scapulae Actions Elevates scapula

Elevates scapula

10

Levator scapulae Nerve Supply

Cervical nerve (C3, C4) and dorsal scapular nerve (C5)

11

Rhomboid major and minor Actions

Retract scapula

12

Rhomboid major and minor Nerve Supply

Dorsal Scapular nerve

13

Pectoralis minor Actions

Flexes, adducts, internally rotates shoulder

14

Pectoralis minor Nerve Supply

Medial pectoral nerve (C8, T1)

15

Why do fractures occur in clavicle

• The Strong ligaments at either end of the clavicle means that fractures are more common than dislocations’ not a posterior dislocation of the medial end is dangerous as it may compress the great vessels.

16

Glenohumural joint → Type of Joint

Synovial Joint

17

Glenohumural joint → Stabilised by

Rotator cuffs

18

Glenohumural joint → What prevents upward displacement of the humoral head

Coracoacromial ligament

19

Glenohumural joint → What occupies the space between the greater tubercle of the humerus and the acromian

Rotator cuffs?

20

Deltoid Action

Shoulder abduction, flexion and extension

21

Deltoid Nerve supply

Axillary nerve

22

Pectoralis major Action

Adducts and medially rotates the humerus

23

Pectoralis major Nerve supply

Lateral and medial pectoral nerve

24

Latissimus dorsi Action

Adducts, extend and internally rotate the arm

25

Latissimus dorsi Nerve supply

Thoracodorsal nerve

26

Teres Major Action

Internal rotation of the humerus

27

Teres Major Nerve supply

Lower subscapular nerve

28

Subscapularis Action

Abducts the arm

29

Subscapularis Innervation

Upper and Low subscapular nerve (C5-C6)

30

Supraspinatus Action

Internally rotates the humerus

31

Supraspinatus Innervation

Suprascapular nerve (C5)

32

Infraspinatus Action

Externally rotates the arm

33

Infraspinatus Innervation

Suprascapular nerve (C5-C6)

34

Teres minor Action

Externally rotates the arm

35

Teres minor Innervation

Axillary nerve (C5)

36

What are at risk of impingement under coracoacromial arch

The supraspinatus tendon and subacromial bursa

37

Elbow Joint → Type of Joint

Synovial

38

Elbow Joint → Stabilised by

Bony morphology, collateral ligaments

39

Carrying Angle →

The Trochlea projects more distally than the capitulum, creating the ‘carrying angle’ at the elbow joint.
→ Male vs. Females

40

Muscles of the arm

Triceps
Biceps
Brachialis

41

Muscles acting on Shoulder joint:

Deltoid
Pectoralis major
Latissimus dorsi
Teres Major

42

Rotator Cuff Muscles:

Subscapularis
Supraspinatus
Infraspinatus
Teres minor

43

Triceps action

Extends the forearm

44

Triceps innervation

Radial and axillary nerve

45

Biceps action

Flexes elbows supination

46

Biceps innervation

Musculocutaneous nerve

47

Brachialis action

Flexion of elbow

48

Brachialis innervation

Musculocutaneous nerve

49

Radioulnar Joint → Type of Joint

Synovial Joints

50

Radioulnar Joint → Actions at Joint

Pronation/Supination

51

Pronator quadratus
action and nerve supply

Pronates forearm
Median nerve

52

Pronator teres
action and nerve supply

Pronates Forearm
Median nerve

53

Supinator
action and nerve supply

Supinates Radial Nerve

54

Nursemaid’s elbow

Radial head subclavian (pulled elbow or Nursemaid’s elbow) is common in children under 5y; normally caused by a sudden pull on upper limb; radial head pulls out of annular ligament

55

ulnar nerve damage due to

3Older patients may suffer ulnar nerve damage due to degenerative changes in the cubital tunnel where the ulnar nerve passes behind the medial epicondyle.

56

Anatomical Snuffbox Boundaries

Posterior → Extensor pollicus longus
Anterior -> Extensor pollicus brevis

57

Anatomical Snuffbox Contents

Radial Artery
Radial Nerve
Cephalic vein

58

Single Palmar skin crease common in

DOWNS SYNDROME

59

Dupuytren’s Contracture →

is a fixed flexion contracture of the hand due to a palmar fibromatosis, where the fingers bend towards the palm. Involves the palmar fascia.

60

Arterial Supply to the wrist

Radial
Ulnar

61

Arterial supply to the hand

Superficial palmar arterial arch
Deep palmar arterial arch

62

Venous Drainage

Dorsal venous plexus of hand?

63

Motor Nerve to wrist and hand

Radial and Median nerves?

64

Cutaneous nerve to risk and hand

Radial nerve → thumb to middle ring finger
Ulnar nerve → medial side of ring finger and little finger

65

1. Osteoarthritis in the hand primarily initially affects the

distal interphalangeal (DIP) joints

66

2. Rhuematoid Arthritis (RA) tends to affect

the wrist, MCP and proximal interphalangeal (PIP) joints; RA may cause rupture of flexor and extensor tendons, and deformitis such as Swan Neck and Boutonniere

67

3. Mallet finger results from

forced hyperfexion of the finger which avulses the long extensor tendon, and stop the patient being able to extend the distal interphalangeal joint (DIPJ).

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