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Kinesiology > Shoulder girdle bones/movement > Flashcards

Shoulder girdle bones/movement Flashcards

1
Q

What makes up the shoulder complex

A

shoulder gridle and glenohumeral joint

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2
Q

2 functions of the shoulder complex

A

Mobility vs stability

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3
Q

What provides SOME stability for the UE

A

girdle

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4
Q

Is movement of the girdle dependent on shoulder joint and muscles

A

NO. Movement is not

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5
Q

What kind of stability does the shoulder gridle have

A

Dynamic

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6
Q

Function of the shoulder complex

A

Mobility. Greatest mobility of any joint

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7
Q

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

A

Horizontal Abduction

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8
Q

3 joints of the shoulder girdle

A

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

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9
Q

Why does the scapula move on the rib cage

A

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

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10
Q

Osteology of the SC Sternoclavicular joint

A

Clavicle, sternum 1st rib

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11
Q

Joint type for sternoclavicular joint

A

Arthrodial ( plane synovial)

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12
Q

Degrees of freedom for sternoclavicular joint

A

three (3)

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13
Q

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

A

Sternoclavicular joint

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14
Q

three Ligaments of the sternoclavicular joints

A

costoclavicular, sternoclavicular, interclavicular

has articulating disc

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15
Q

SC joint Osteokinematics planes of motion

A

F/T/”S”

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16
Q

What has a greater range of motion in the SC joint

A

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

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17
Q

Is the SC joint often injured

A

not by macrotrauma–sprain or dislocation

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18
Q

Acromioclavicular joint osteology

A

acromion, distal end of clavicle

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19
Q

AC joint type

A

arthrodial–plane synovial

20
Q

Degrees of freedom for AC joint

A

three (3)

21
Q

What joint does the AC joint help

A

the SC joint’s little helper

22
Q

AC joint Osteokinematics planes of motion

A

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

23
Q

Movements of the AC joint

A

upward/downward
medial/lateral rotation
Anterior/posterior tilting

24
Q

Function of the AC joint

A

maintain congruency with the thorax

25
Q

What is a sprain of the A/C joint

A

shoulder separation

injured more than SC joint

26
Q

Scapulothoracic joint type

A

functional joint not synovial joint

27
Q

What is the movement of the ST joint dependent on

A

depends on the AC and SC joints

28
Q

What kind of support does the ST joint have

A

Dynamic support,
no ligaments
no synovial features

29
Q

What is the holding forces for the ST joint

A

atmospheric pressure

30
Q

ST joint osteology

A

Scapula and thorax

31
Q

ST joint type

A

concave scapula with convex ribs

32
Q

degrees of freedom of ST joint

A

0 because not joint

33
Q

Osteokinematics for ST

A 
confusing.
elevation/depression
protrat/retract
up/down rotation
med/lat rotation (winging)
ant/post--tipping
34
Q

ST joint motion

A

scapular elevation

35
Q

what happens in scapular elevation

A

SC elevation

AC anterior tipping

36
Q

scapular motion allows

A

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

37
Q

Joint actions (empty on card) fill in

A
38
Q

Special motions (need to fill in)

A

at end of range of motion

39
Q

What do protraction and retraction of the ST joint equal

A

abduction (pro)

adduction (re)

40
Q

When does upward and downward motion of the ST joint occur

A

when arms are at the side and lifted straight out

41
Q

when does elevation and depression of ST joint happen

A

when shrugging shoulders

42
Q

Special motions of the ST joint

A

occur at the end of ROM

not visible during motion

43
Q

Two special motions of the ST joint

A

winging

tipping

44
Q

What is winging of the ST joint

A

medial/lateral rotation of the scapula

45
Q

what is tipping of the ST joint

A

Anterior/posterior tipping of the scapula

putting arms from neutral position straight back

46
Q

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

A

Horizontal Adduction

Kinesiology (10 decks)

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