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Movement Analysis > Unit 3 Exam > Flashcards

Unit 3 Exam Flashcards

1
Q

ER causes the head of the humerus to move

A

Anterior

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2
Q

IR causes the head of the humerus to move

A

Posterior

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3
Q

Abduction causes ____ translation of the humeral head

A

Inferior

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4
Q

Abduction causes ___ translation of the humeral head

A

Inferior

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5
Q

Scapulothoracic Junction

A

Depends completely on muscular control and support. Very important to give shoulder joint a mechanical advantage and keep bigger muscles in a better position

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6
Q

Scapulohumeral Rhythm

A

Every 15 degrees of humeral movement you get 10 degrees of scapular movement; most of it happens in early abduction (Ratio 1.25:1)

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7
Q

Rotator Cuff Force

A

Holds humeral head against glenoid fossa, especially with arm in low degrees of abduction

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8
Q

Biceps brachii tendon force

A

Pulls and tightens humeral head against glenoid fossa

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9
Q

Flexion (spin and glide)

A

Anterior spin, posterior glide

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10
Q

Extension (spin and glide)

A

Posterior spin, anterior glide

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11
Q

What does the subacromial space contain?

A

b/t head of humerus and acromion
area for rotator cuff (supraspinatus)
long head biceps
subacromial and subdeltoid bursae

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12
Q

Glenoid Labrum

A

Cartilaginous disc that deepens cavity and increases stability
Attaches to biceps tendon

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13
Q

What 3 joints make up the shoulder?

A

SC, AC, GH

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14
Q

This joint is the only bony attachment to the body

A

SC Joint

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15
Q

The SC joint is a ________________ joint

A

Saddle (Sellar)

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16
Q

In a SC joint, the ________________ moves on ______________

A

clavicle, disc

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17
Q

This allows for more movement in the SC joint

A

Interarticular disc

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18
Q

with elevation/depression in the SC joint, the axis of motion is _____________

A

Oblique

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19
Q

For elevation at the SC joint the motion is ________ and _________

A

upward, backward

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20
Q

For depression at the SC join the motion is ___________ and __________

A

downward, forward

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21
Q

For protraction/retraction at the SC joint, the axis of motion is nearly ____________ and passes through the ______________

A

vertical, manubrium

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22
Q

For protraction/retraction at the SC joint, the movement is between the _______________ and the _____________

A

sternum, disc

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23
Q

For ROTATION at the SC joint, the axis of motion is along the ____________ axis

A

long (horizontal)

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24
Q

Rotation at the SC joint occurs when ______________ ligament tightens

A

conoid

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25
Q

SC support

A

Articular capsule, Anterior/Posterior SC ligaments,
Interclavicular Ligaments,
Costoclavicular Ligaments

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26
Q

Accessory Motions

A

unconscious motions that must occur in order for main motion to occur

27
Q

___________ __________ __________ is the least amount of motion due to the ligaments being the tightest; max surface contact of joint

A

Closed Packed Position

28
Q

closed packed position of the SC joint is when the arm is _______________

A

Fully Elevated

29
Q

The AC joint is a _____________ joint

A

plane (glide)

30
Q

In the AC joint the convex part is the______________ and the concave part is the ___________

A

clavicle, acromion

31
Q

AC Support

A 
Articular Capsule, 
Superior/Inferior AC
Trapezoid Ligament, 
Conoid Ligament, 
Coracoacromial Ligament
32
Q

This ligament at the AC joint pulls down on the clavicle

A

Conoid

33
Q

These two ligaments make up the coracoclavicular ligament

A

Conoid and Trapezoid

34
Q

The closed packed position in the AC joint is when the arm is __________

A

at 90 degrees

35
Q 
The GH joint has
\_\_\_\_\_\_\_\_\_ ROM, 
\_\_\_\_\_\_\_\_\_\_ ligament support,
\_\_\_\_\_\_\_\_\_\_\_ stability from bone,
\_\_\_\_\_\_\_\_\_\_\_\_ stability from muscles
A

wide
thin
little
large

36
Q

Flexion at the GH joint with the scapula stabilized is ____________ degrees , but when the scapula is NOT stabilized it is from _____________ degrees

A

90, 165-175

37
Q

Extension at the GH joint when the scapula is stabilized is from _____________ degrees, and when the scapula is NOT stabilized it is from _____________

A

40-60, 40-75

38
Q

Abduction with a stabilized scapula depends on the _________ of the humerus

A

Rotation

39
Q

With a stabilized scapla, abduction with the humerus externally rotating is ________ degrees

A

90

40
Q

With a stabilized scapula, abduction with the humerus internally rotating is __________ degrees

A

60

41
Q

Without a stabilized scapula, abduction is from _________ - __________

A

168-185

42
Q

Adduction is at ____________ degrees at the GH joint when in starting anatomical position

A

0

43
Q

during abduction the humerus has a(n) _______________ roll and a(n) _______________ glide

A

superior, inferior

44
Q

during adduction the humerus has a(n) _______________ roll and a(n) _______________ glide

A

Inferior, superior

45
Q

area between the head of the humerus and acromion

A

subacromial space

46
Q

These two muscles are found in the subacromial space

A

supraspinatus and biceps (long head)

47
Q

Why does the humeral head dislocate anteriorly more often?

A

slumped shoulders (we tend to position the humeral had forward)

48
Q

The action of the supraspinatus when at the humerus is at 90 degrees

A

Compression

49
Q

the action of the supraspinatus when the humerus is at 40 degrees or below

A

Abduction

50
Q

Elbow forearm complex

A

humeroulnar joint, humeroradial joint, proximal radioulnar joint, distal radioulnar joint

51
Q

Humeroradial Joint

A

convex capitulum into concave radial head

less stable so it needs more ligaments/muscles

52
Q

Flexion: humeroulnar joint

A

ulna glides on trochlea; at end range,
coronoid process hits the floor of coronoid fossa
concave on convex so motion and glide are in same direction

53
Q

The trochlear groove articulates with the…

A

Ulna

54
Q

why do you have less flexion when pronated vs supinated

A

radius gets in the way

55
Q

Flexion of the elbow requires…

A

Anterior glide of ulna on trochlea

56
Q

What is the name for a carrying angle greater than 20 degrees? knock elbows

A

cubitis valgus

57
Q

Transverse Ligament

A

b/w lesser & greater tubercles; holds biceps long head tendon

58
Q

Rotator Cuff Muscles

A

SITS

Supraspinatus, Infraspinatus, Teres Minor, Subscapularis

59
Q

Annular Ligament

A

Ligamentous ring that surrounds the head of the radius & anchors it close to the
ulna

60
Q

Quadrate Ligament

A

Prevents extreme rotation of head of radius

61
Q

Muscles that can cause elbow flexion

A

Biceps brachii, brachialis, brachioradialis, pronator teres, extensor carpi radialis longus,
extensor carpi radialis brevis

62
Q

Muscles that can cause elbow extension

A

Triceps brachii, Anconeus

63
Q

Muscles that can cause supination

A

Biceps brachii, supinator

64
Q

Muscles that can cause pronation

A

Pronator teres, pronator quadratus

Movement Analysis (3 decks)

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