Shoulder Region I Flashcards Preview

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Flashcards in Shoulder Region I Deck (61):
1

list bones in shoulder region:

clavicle, scapula, humerus

2

function: clavicle

- rigid moveable strut
- suspends scapula and allows max limb movement

3

theoretical features: clavicle

- long bone
- no medullary cavity
- shell of compact bone covering spongy bone
- varies shape depending of activity

4

clavicle: identify concave/ convex sides

- concave: lateral 'acromial' end
- convex: medial sternal end

5

clavicle: lateral side articulates with

acromion

6

clavicle: medial side articulates with

manubrium of sternum, and first costal cartilage

7

clavicle: conoid tubercle found/ for

- conoid ligament attaches here
- near lateral side

8

where does coracoclavicular ligament attach on clavicle?

conoid tubercle and trapezoid line

9

where does subclavius muscle meet clavicle?

groove for subclavius muscle middle of clavicle

10

where does costoclavicular ligament attach?

impression near sternal end

11

how to diagnose fractured clavicle:

bone protruding above normal shoulder

12

scapula: posterior and anterior surface fossa?

anterior: costal- subscapular fossa

posterior: infraspinous fossa (inferior to spine), supraspinous

13

scapula: angles

- superior angle (highest point)
- inferior (apex, lowest)
- lateral angle (near glenoid cavity)

14

scapula: borders

- lateral (under glenoid)
- medial (mid scapula)
- superior (top)

15

scapula: list/locate tubercles

infraglenoid - inferior to glenoid cavity
supraglenoid - superior to glenoid cavity

16

infraglenoid tubercle attachment:

long head of triceps brachii

17

supraglenoid tubercle attachment:

long head of biceps brachii

18

scapula: list/ locate processes

- coracoid (anterolateral)
- acromion (posterolateral)
- spinous proccess (dorsal)

19

proximal humerus: head articulates with

glenoid cavity of scapula

20

proximal humerus: list tubercles

lesser and greater tubercle

21

proximal humerus: lesser tubercle attachments

- subscapularis

22

proximal humerus: greater tubercle attachments

- supraspinatus
- infraspinatus
- teres minor

23

proximal humerus: whats found in intertubercular sulcus?

aka bicipital groove,
tendon of long head of biceps brachii

24

proximal humerus: attachment to lateral lip of intertubercular sulcus?

pectoralis major muscle

25

proximal humerus: attachment to medial lip of intertubercular sulcus?

teres major muscle

26

proximal humerus: attachment to floor of intertubercular sulcus?

latissimus dorsi muscle

27

proximal humerus: attachment to deltoid tuberosity found?

laterally for deltoid muscle

28

proximal humerus: attachment to radial sulcus/groove found?

medially for coracobrachialis muscle

29

list joints of shoulder region:

- sternoclavicular
- acromioclavicular
- shoulder (glenohumeral)
- scapulothoracic (physiological joint)

30

list movements of scapula:

abduction, adduction, retraction, protraction

31

list movements of shoulder:

flexion, extension, abduction, adduction, medial/ lateral rotation, circumduction

32

sternoclavicular joint: classification

synovial, saddle

33

sternoclavicular joint: articulating surfaces and use of articular disc

sternal end of clavicle:
- manubrium of sternum
- part of 1st costal cartilage
- articular disc divides cavity (help stability)

34

sternoclavicular (s.c.) joint: ligaments and location

- anterior s.c. (btw manubrium/ clavicle)
- posterior s.c.
- costoclavicular (btw clavicle/ costal c.)
- interclavicular (btw both clavicles)

35

sternoclavicular joint: movements

- allows movement of clavicle
- most: antero-posterior and vertical planes
- some rotation

36

acromioclavicular joint: classification

synovial, plane

37

acromioclavicular joint: articulating surfaces

- lateral aspect of clavicle (oval shaped facet)
- medial aspect of acromion

38

acromioclavicular joint: ligaments and location

- acromioclavicular (surrounding clavicle)

coracoclavicular (btw clavicle/ coracoid process of scapula)-
- trapezoid and conoid ligaments (accessory)
- trap: more lateral
- conoid: more medial

39

acromioclavicular joint: movements

- allows clavicle movement
- in antero-posterior, vertical planes
- some axial rotation

40

glenohumeral joint: classification

synovial, ball and socket

41

glenohumeral joint: articulating surfaces

- glenoid cavity of scapula
- head of humerus

42

glenohumeral joint: ligaments

- glenoid labrum
- glenohumeral (superior, middle, inferior)
- coracohumeral
- transverse humeral

43

glenohumeral joint: movements

flexion, extension, abduction, adduction, medial/lateral rotation, circumduction

44

glenohumeral joint: bursae

- subtendinous bursa of subscapularis
- subacromial
- btw acromion/ skin
- btw coracoid process/ joint cap
- around other tendons of g.h. joint

45

glenohumeral joint: factors enhancing stability

- rotator cuff muscles
- coraco-acromial arch

46

glenohumeral joint: blood supply

branches of:
- anterior/ posterior circumflex humeral artery
- suprascapular artery

47

glenohumeral joint: innervation

branches from:
- posterior cord of brachial plexus
- suprascapular
- axillary
- lateral pectoral nerves

48

joint capsule: openings

- long head of biceps brachii
- subscapularis bursa

49

joint capsule: why redundant inferiorly?

allow for large degree of movement

50

glenoid labrum: function

deepens glenoid cavity

51

glenoid labrum: features

- fibro-cartilaginous rim
- long tendon of biceps and triceps brachii attach near there

52

glenohumeral ligaments: features/function

- inter-capsular ligaments
- reinforce anterior part of joint capsule

53

glenohumeral ligaments: list fibres

superior, middle, inferior

54

coracohumeral ligament: located/ feature

capsular ligament
- base of coracoid process -> anterior aspect of greater tubercle

55

transverse humeral ligament: located

superior end of intertubercular groove

56

transverse humeral ligament: functions

- bridges gap btw greater/ lesser tubercles
- holds tendon of long head of biceps brachii inside intertubercular groove

57

coracoacromial arch: feature/ function

- protective arch superior to humerus head
- prevents superior dislocation of shoulder

58

coracoacromial arch: forms osseofibrous brudge

- coracoacromial ligament (accessory)
- coracoid process
- acromion

59

list 2 bursae of shoulder:

- subscapular
- subacromial

60

subscapula bursa: located/ function

- tendon of subscapularis, neck of scapula, fibrous capsule
- communicates with joint cavity

61

subacromial (subdeltoid) bursa: located/ function

- deltoid, coracoacromial arch, supraspinatus, fibrous capsule
- does NOT normally communicate with joint cavity