MSK Exam 3

studied byStudied by 1 person
0.0(0)
get a hint
hint

sternoclavicular joint, acromioclavicular joint, scapulothoracic joint, glenohumeral joint

1 / 292

Tags and Description

293 Terms

1

sternoclavicular joint, acromioclavicular joint, scapulothoracic joint, glenohumeral joint

What are the 4 joints that make up the shoulder complex?

New cards
2

sternocalvicular (SC) joint

connects sternum and clavicle

New cards
3

acromioclavicular (AC) joint

connects clavicle and scapula

New cards
4

scapulothoracic joint

connects scapula and rib cage

New cards
5

glenohumeral joint

connects scapula and humerus

New cards
6

clavicle

connects upper extremity with axial skeleton

New cards
7

scapula

triangular flat bone that overlies ribs 2nd-7th posteriorly

New cards
8

superior, medial, and axillary borders

what are the three main borders of the scapula?

New cards
9
  • attachment for upper appendicular and axial skeleton

  • serve as the base for upper extremity movement

What are the 2 primary purposes of the pectoral girdle?

New cards
10

sternum (manubrium), clavicle, scapulae

what bones form the partial ring of the pectoral girdle?

New cards
11

humerus

what is the longest bone in the body?

New cards
12

sternoclavicular joint

the articulation between manubrium of the sternum and medial end of the clavicle

New cards
13

the sternoclavicular joint

what the only direct connection of the upper limb to the axial skeleton

New cards
14

articular disc

what improves joint congruency at the sternoclavicular joint?

New cards
15

fibrocartilage

what is the articular disc made of?

New cards
16

improve joint congruency and absorb shock

what is the purpose of the articular disc?

New cards
17

saddle joint (triaxial)

what kind of joint is the sternoclavicular joint?

New cards
18

elevation/depression, protraction/retraction, upward/downward rotation

what motions occur at the sternoclavicular joint?

New cards
19

anterior sternoclavicular ligament, posterior sternoclavicular ligament, interclavicular ligament, costoclavicular ligament

What ligaments support the sternoclavicular joint?

New cards
20

prevents excessive retraction and elevation

what actions occur at the anterior sternoclavicular ligament?

New cards
21

prevents excessive protraction and elevation

what actions occur at the posterior sternoclavicular ligament?

New cards
22

prevents excessive retraction and depression

what actions occur at the interclavicular ligament?

New cards
23

costoclavicular ligament

what actions occur at the costoclavicular ligament

New cards
24

during abduction or flexion of glenohumeral joint, the clavicle rotates upwardly. Opposite occurs during extension and adduction

what happens at the long axis of clavicular rotation

New cards
25

acromioclavicular joint

articulation between acromion process of scapula and lateral end of clavicle

New cards
26

plane synovial joint

what kind of joint is the acromioclavicular joint?

New cards
27

gliding, clavicle rotates when scapula elevates and depresses

What kind of actions occur at acromioclavicular joint?

New cards
28

acromioclavicular ligaments, coracoclavicular ligaments, and coracoacromial ligments

what 3 types of ligaments occur at the acromioclavicular joint?

New cards
29
  • superior and inferior thickening in the joint capsule

  • holds AC joint together

What is the purpose of acromioclavicular ligaments?

New cards
30

conoid ligament and trapezoid ligament

What 2 ligaments make up the coracoclavicular ligaments?

New cards
31

inferior aspect of clavicle to coracoid process of scapula

Where are the coracoclavicular ligaments located?

New cards
32

prevent excessive elevation of the clavice

What is the purpose of the coracoclavicular ligaments?

New cards
33

the coracoid process to the acromion process of the scapula

Where does the coracoacromial ligament run?

New cards
34
  • provides stability on superior aspect of GH joint

  • forms roof of coracoacromial arch

What is the purpose of the coracoacromial ligament?

New cards
35

coracoacromial arch

Osteoligamentous structure formed by acromion process, coracoacromial ligament, and coracoid process

New cards
36

prevents superior translation of humerus

what is the purpose of the coracoacromial arch?

New cards
37

glenohumeral joint

articulation between head of humerus and glenoid fossa of scapula

New cards
38

multi-axial ball and socket joint

what kind of joint is the glenhumeral joint?

New cards
39

sacrifices stability for mobility

What compromise does the glenhumeral joint make?

New cards
40

sagittal, frontal, transverse planes

what planes of motion does the glenhumeral joint act in?

New cards
41

flexion/extension, abduction/adduction, internal/external rotation, horizontal abduction/adduction, circumduction

what actions occur at the glenhumeral joint?

New cards
42

anterior, posterior, and inferior capsule

what are the main parts of the glenohumeral joint capsule?

New cards
43

3

how many distinct thickenings does the anterior capsule have?

New cards
44

none

how many thickenings does the posterior capsule have?

New cards
45

glenoid labrum

fibrocartilaginous rim around the perimeter of the glenoid cavity

New cards
46

deepens the socket

what is the primary function of the glenoid labrum

New cards
47

anterior glenhumeral ligaments

fibrous bands that run from glenoid to anatomical neck

New cards
48

superior, middle, and inferior

what are the 3 distinct bands of the anterior glenhumeral ligaments

New cards
49

prevents humerus from displacing anteriorly

what is the main function of the anterior glenhumeral ligaments?

New cards
50

runs from the lateral aspect of the coracoid process to greater tuberacle of the humerus

Where does the coracohumeral ligament run?

New cards
51

provides anterior stability to GH joint

what is the primary function of the coracohumeral ligament?

New cards
52

runs from the greater to the lesser tuberacles over the intertubercular groove and superficial to the long head of the biceps tendon

Where does the transverse humeral ligament run?

New cards
53

holds tendon in place

what is the primary function of the transverse humeral ligament?

New cards
54

bursa

flattened sac containing synocial fluid that reduces friction between two moving structures in the body

New cards
55

between the subscapularis tendon and the coracoid process

Where is the subscapular bursa located?

New cards
56

inferior to the coracoacromial arch and superior to the supraspinatus tendon

what is the subacromial bursa located?

New cards
57

subdeltoid bursa

what other bursa is the subacromial bursa continuous with?

New cards
58

atop the 2nd and 7th ribs

where does the scapulothoracic joint lie?

New cards
59
  • no joint capsule

  • no ligaments

  • muscles on anterior scapula prevent articulation of bones

why is the scapulothoracic joint not a true joint?

New cards
60

elevation/depression, protraction/retraction, upward/downward rotation

what motions occur at the scapulothoracic joint?

New cards
61

scapulohumeral rhythm

coordination of movements between the scapula, clavicle, and humerus

New cards
62

GH joint, ST joint, SC joint, and AC joint

what 4 joints must work together to ensure scapulohumeral rhythm?

New cards
63

2:1 ratio of GH:ST

what is the ratio of movement between glenohumeral and scapulothoracic joints?

New cards
64

120 degrees abduction/flexion of humerus

during 180 degrees of abduction of the arms, what happens at the glenohumeral joint?

New cards
65

60 degrees upward rotation of scapula

during 180 degrees of abduction of the arms, what happens at the scapulothoracic joint?

New cards
66

30 degrees elevation of clavicle

during 180 degrees of abduction of the arms, what happens at the sternoclavicular joint?

New cards
67

30 degrees upward rotation of clavicle

during 180 degrees of abduction of the arms, what happens at the acromioclavicular joint?

New cards
68

thoracoappendicular muscles

muscles that move the pectoral girdle

New cards
69

subclavius, pectoralis minor, serratus anterior

What are the anterior muscles that move the pectoral girdle?

New cards
70

serratus anterior

dysfunction of what muscle causes winging of the scapula?

New cards
71

trapezius, levator scapulae, rhomboid major, rhomboid minor

what posterior muscles move the pectoral girdle?

New cards
72

humerus

what bone does the rotator cuff muscles work to move?

New cards
73

supraspinatus, infraspinatus, teres minor, subscapularis

what muscles make up the rotator cuff?

New cards
74

external/internal rotation, abduction

what actions do rotator muscles help with?

New cards
75

dynamic stabilizer to pull humeral head into socket when raising the arm

what is the main function of the rotator cuff muscles?

New cards
76

pectoralis major, deltoid, coracobrachialis, biceps brachii

what are the anterior muscles that move the humeus?

New cards
77

latissimus dorsi, teres major, triceps brachii

what are the posterior muscles that move the humerus?

New cards
78

pectoralis major, coracobrachialis, latissimus dorsi, teres major

what muscles are involved in adduction?

New cards
79

supraspinatus, deltoid

what muscles are involved in abduction?

New cards
80

subscapularis, pectoralis major, latissimus dorsi, teres major

what muscles are involved in internal rotation

New cards
81

infraspinatus, deltoid

what muscles are involved in external rotation?

New cards
82

supraspinatus-deltoid force couple

Supraspinatus initiates abduction by elevating the humeral head and pulling it snugly into the glenoid fossa (with other rotator cuff muscles)

Deltoid has a mechanical advantage to abduct humerus once humeral head is stabilized in glenoid

New cards
83

upper trapezius-serratus anterior force couple

Upper trapezius contracts to upwardly rotate the scapula

Serratus anterior contracts to pull the scapula away from the midline of the body

Resultant vector causes the scapula to protract around the circumference of the rib cage

New cards
84

flexion/extension

what motions occur at the elbow?

New cards
85

olecranon process

where on the elbow does motion occur?

New cards
86

supination/pronation

what motions occur at the forearm?

New cards
87

radioulnar joint

where do motions at forearm occur?

New cards
88

humerus, ulna, radius

what bones make up the elbow and forearm?

New cards
89

radius

what bone moves during pronation and supination?

New cards
90

capitulum

part on humerus that articulates with radius

New cards
91

trochlea

part on humerus that articulates with ulna

New cards
92

radial fossa

part of the humerus that fits the radial head during flexion

New cards
93

coronoid fossa

part of the humerus that fits coronoid process during flexion

New cards
94

olecranon fossa

part of the humerus that fits olecranon process during extension

New cards
95

right behind medial epicondyle of humerus

where does ulnar nerve run?

New cards
96

trochlear notch

articulates with trochlea of humerus

New cards
97

olecranon process

proximal end of ulna and lip of trochlear notch

New cards
98

coronoid process

distal lip of trochlear notch

New cards
99

radial notch of ulna

articulates with radial head, proximal

New cards
100

ulnar head

articulates with ulnar notch of radius, distal

New cards

Explore top notes

note Note
studied byStudied by 132 people
Updated ... ago
5.0 Stars(2)
note Note
studied byStudied by 12477 people
Updated ... ago
4.8 Stars(53)
note Note
studied byStudied by 24 people
Updated ... ago
5.0 Stars(2)
note Note
studied byStudied by 56 people
Updated ... ago
5.0 Stars(2)
note Note
studied byStudied by 8 people
Updated ... ago
5.0 Stars(1)
note Note
studied byStudied by 2 people
Updated ... ago
5.0 Stars(1)
note Note
studied byStudied by 11 people
Updated ... ago
5.0 Stars(1)
note Note
studied byStudied by 9906 people
Updated ... ago
4.8 Stars(32)

Explore top flashcards

flashcards Flashcard70 terms
studied byStudied by 8 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard40 terms
studied byStudied by 126 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard32 terms
studied byStudied by 2 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard25 terms
studied byStudied by 14 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard22 terms
studied byStudied by 1 person
Updated ... ago
5.0 Stars(1)
flashcards Flashcard95 terms
studied byStudied by 53 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard48 terms
studied byStudied by 6 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard100 terms
studied byStudied by 8 people
Updated ... ago
5.0 Stars(1)