Shoulder girdle bones/movement

Question 1

What makes up the shoulder complex

Answer 1

shoulder gridle and glenohumeral joint

Question 2

2 functions of the shoulder complex

Answer 2

Mobility vs stability

Question 3

What provides SOME stability for the UE

Answer 3

girdle

Question 4

Is movement of the girdle dependent on shoulder joint and muscles

Answer 4

NO. Movement is not

Question 5

What kind of stability does the shoulder gridle have

Answer 5

Dynamic

Question 6

Function of the shoulder complex

Answer 6

Mobility. Greatest mobility of any joint

Question 7

What happens at the shoulder girdle during a bench press during the lowing phase

Answer 7

Horizontal Abduction

Question 8

3 joints of the shoulder girdle

Answer 8

Sternoclavicular (SC)
acromioclavicular (AC)
scapulothoracic (ST)

Question 9

Why does the scapula move on the rib cage

Answer 9

Joint motion occurring at the SC joint and less the AC joint

Question 10

Osteology of the SC Sternoclavicular joint

Answer 10

Clavicle, sternum 1st rib

Question 11

Joint type for sternoclavicular joint

Answer 11

Arthrodial ( plane synovial)

Question 12

Degrees of freedom for sternoclavicular joint

Answer 12

three (3)

Question 13

What is the only synovial articulation between the axial and appendicular skeleton?

Answer 13

Sternoclavicular joint

Question 14

three Ligaments of the sternoclavicular joints

Answer 14

costoclavicular, sternoclavicular, interclavicular

has articulating disc

Question 15

SC joint Osteokinematics planes of motion

Answer 15

F/T/”S”

Question 16

What has a greater range of motion in the SC joint

Answer 16

Posterior rotation (30-70) is greatest, then elevation (45) with depression, protraction/retraction (15)

Question 17

Is the SC joint often injured

Answer 17

not by macrotrauma–sprain or dislocation

Question 18

Acromioclavicular joint osteology

Answer 18

acromion, distal end of clavicle

Question 19

AC joint type

Answer 19

arthrodial–plane synovial

Question 20

Degrees of freedom for AC joint

Answer 20

three (3)

Question 21

What joint does the AC joint help

Answer 21

the SC joint’s little helper

Question 22

AC joint Osteokinematics planes of motion

Answer 22

F/T/S 20-30 degree total gliding and rotation

Question 23

Movements of the AC joint

Answer 23

upward/downward
medial/lateral rotation
Anterior/posterior tilting

Question 24

Function of the AC joint

Answer 24

maintain congruency with the thorax

Question 25

What is a sprain of the A/C joint

Answer 25

shoulder separation | injured more than SC joint

Question 26

Scapulothoracic joint type

Answer 26

functional joint not synovial joint

Question 27

What is the movement of the ST joint dependent on

Answer 27

depends on the AC and SC joints

Question 28

What kind of support does the ST joint have

Answer 28

Dynamic support, no ligaments no synovial features

Question 29

What is the holding forces for the ST joint

Answer 29

atmospheric pressure

Question 30

ST joint osteology

Answer 30

Scapula and thorax

Question 31

ST joint type

Answer 31

concave scapula with convex ribs

Question 32

degrees of freedom of ST joint

Answer 32

0 because not joint

Question 33

Osteokinematics for ST

Answer 33

``` confusing. elevation/depression protrat/retract up/down rotation med/lat rotation (winging) ant/post--tipping ```

Question 34

ST joint motion

Answer 34

scapular elevation

Question 35

what happens in scapular elevation

Answer 35

SC elevation | AC anterior tipping

Question 36

scapular motion allows

Answer 36

optimal contact of humerus with glenoid fossa added ROM to elevate arm stable base for roll/slide humeral head

Question 37

Joint actions (empty on card) fill in

Question 38

Special motions (need to fill in)

Answer 38

at end of range of motion

Question 39

What do protraction and retraction of the ST joint equal

Answer 39

abduction (pro) | adduction (re)

Question 40

When does upward and downward motion of the ST joint occur

Answer 40

when arms are at the side and lifted straight out

Question 41

when does elevation and depression of ST joint happen

Answer 41

when shrugging shoulders

Question 42

Special motions of the ST joint

Answer 42

occur at the end of ROM | not visible during motion

Question 43

Two special motions of the ST joint

Answer 43

winging | tipping

Question 44

What is winging of the ST joint

Answer 44

medial/lateral rotation of the scapula

Question 45

what is tipping of the ST joint

Answer 45

Anterior/posterior tipping of the scapula | putting arms from neutral position straight back

Question 46

What happens at the shoulder girdle during the lifting phase of a bench press

Answer 46

Horizontal Adduction