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A: ther ex: UQ > shoulder > Flashcards

shoulder Flashcards

1
Q

what ligament runs vertically between the coracoid process and the clavicle

A

conoid ligament

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2
Q

what does the conoid ligament resist

A

elevation and protraction

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3
Q

wbat are the 3 ligaments that are apart of the AC joint

A

conoid
trapezoid
acromioclavicular

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4
Q

what ligaments runs in a superior and lateral direction between the coracoid process and clavicle

A

trapezoid ligament

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5
Q

what does the trapezoid ligament provide to the AC joint

A

compression

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6
Q

during clavicle elevation both ___ ligaments develop tension that results in ___ rotation of the clavicle along its long axis and resists ____ rotation forces of the scap

A

costclavicular
posterior
upward

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7
Q

what ligaments runs horizontally from the acromion to the clavicle

A

the acromioclavicualr ligament

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8
Q

what does the acromioclavicular ligament cover and what does it reinforce

A

covers teh joint capsule and reinforcers its superior aspect

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9
Q

how many degress of rotation and translation does teh AC joint have

A

3

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10
Q

the flat medial acromion surface faces what 3 ways and articulates with the flat lateral surface that faces what 3 ways

A

superior , anterior and medial

inferior , posterior and lateral

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11
Q

the SC joint has a capsule that surrounds teh entire joint . it is relatively weak and is supported by what 2 ligaments that provide anterior and posterior support

A

anterior and posterior sternoclavicular ligament

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12
Q

the interclavicualr ligament spans between both medial ends of the clavicle and it thought to provide restraint to what

A

inferior forces on the medial end of the clavicle

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13
Q

where does the costoclavicular ligaments run

A

includes both an anterior and posterior bundle that runs from the superior surface of the first rib to the undersurface of the clavicle

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14
Q

what does the costcoclavicular ligament complex limit

A

excessive superior , anterior and posteiror movement of the medial end of the clavicle

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15
Q

how does the costoclavicular ligament act as a lever

A

bc when the clavicle moves up it created a lever to elevate the clavicle which allows teh scapula to fully come to upward rotation

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16
Q

Even though the SC joint is unstable, yet is one of the ___ dislocated joints in the shoulder.

A

least

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17
Q

what is the most important ligament in the SC joint

A

posterior sternoclavicular ligament

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18
Q

what are the ligametns of teh SC joint

A

anterior and posterior sternoclavicular lig

interclavicular lig

costcoclavicualr lig complex

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19
Q
A
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20
Q

the medial end of the clavicle is ___ in the anterior posterior direction and ___ superior to inferior

A

concave and convex

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21
Q

what is a large flat thin triangular shaped bone that rests on the posterior thoracic wall

A

scapula

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22
Q

how far does the medial border of the scapular rest from the thoracic vertebral column

A

5 cm (3 fingers)

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23
Q

what is the scapulothoracic joint

A

joint between the anterior portion of the scapula and the posterior thorax and rib cage

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24
Q

where does the superior level of the scap rest? inferior lower boarder? spine of scap?

A

T2
T7
T3

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25
the scapular is **upwardly rotated** about ___ to ___ from the vertical and **tips** **anteriorly** about ___ to ___ from vertical
10-20° 10-20°
26
the **acromion** serves as a lever arm for the ___ and articulates with the ___ end of the clavicle at the AC joint
deltoid lateral
27
the humeral head is ___ and the glenoid fossa is ___
convex and concave
28
during **flexion** and **IR** ; **horizontal** **adduction** what is the GH arthokinematics
posterior glide and anterior roll
29
during **extension** and **ER** and **horizontal** **abduction** what is the GH arthokinematics
anterior glide and posterior roll
30
what movement of the GH casues an **inferior** glide and **superior** roll
abduction
31
**Adduction** of the GH joint has a ___ roll and ___ glide
Inferior superior
32
what kind of spin is at the **AC joint** during **flexion**
posterior (roll sup, glide inf)
33
what kind of spin is at the **AC joint** during **extension**
anterior (roll infer, glide sup)
34
what kind of **glide** is at the **AC joint** during **adduction**
superior
35
what kind of **glide** is at the **AC joint** during **abduction**
inferior
36
what kind of **glide** is at the **AC joint** during **IR**
anterior
37
what kind of **glide** is at the **AC joint** during **ER**
superior
38
what kind of **glide** is at the **SC joint** during **flexion**
inferior
39
what kind of glide is at the SC joint during extension
superior
40
what kind of **roll and glide** is at the **SC joint** during **horizontal** **abduction** and **protraction**
anterior
41
42
what kind of **roll and glide** is at the **SC** joint during **horizontal adduction and retraction**
posterior
43
at the ASC joint what roll and glide during retraction ? what lig is taut and relaxed
roll and glide postieor ACL and CCL is taut PCL is relaxed
44
45
at the ASC joint what roll and glide during protraction ? what lig is taut and slack
roll and glide anteriorly PCL taut CCL and ACL slack
46
what is the normal ROM for **shoulder flexion and extension** and what end feel is it
180°- firm 45-60° for extension and firm
47
what is the normal ROM for **shoulder ER and IR** and what end feel is it
ER: 80-110° f, firm IR: 70-90°, firm
48
what is the normal ROM for shoulder **abduction** and **adduction** and what end feel is it
abd: 180° , firm add: 30-50° soft
49
what is the normal ROM for shoulder **horizontal abduction and horizontal adduction** and what end feel is it
abd: 45° and firm ADD: 35-45° firm or soft
50
what is the **open packed position** for the GH joint , AC, SC
55° of abduction , 30° horizontal adduction AC: arm resting at side SC: arm resting at side
51
what is the **c****losed packed position** for the GH joint , AC, SC
GH: 90° abduction , full ER and full abduction and full ER AC: 90° abduction SC: full shoulder elevation
52
what is the capsular pattern for the GH joint , AC, SC
GH: ER , abduction (flexion) IR AC: pain at end range SC: pain at end range
53
what **mms** give **shoulder flexion** a firm end full
teres major and minor, infraspinatus, and posterior deltoid
54
what **mms** give **shoulder extension** a firm end full
pec major, coracobrachialis, and anterior deltoid
55
what **mms** give **shoulder ER** a firm end full
pec major, lats, and subscapularis
56
what **mms** give **shoulder IR** a firm end full
infraspinatus, and teres minor ## Footnote both of these mm are ER
57
what mms give **shoulder abduction** a firm end full
pec major, and teres major
58
what mms give shoulder horizontal abduction a firm end full
pec major, anterior deltoid, and coracobrachialis
59
what mms give shoulder horizontal adduction a firm end full
pec major soft tissue
60
what is th original rhythem of the GH scapulohumeral rhythm
2 to 1 2° of GH motion for every 1° of scapular motion
61
to achieve a full 180° should elevation then how much humer evaluated and scapular rotation is there
120° humeral elevation and 60° of scapular rotation
62
how much does the humerus need to rotated to clear the greater tuberosity of the acromion
ER 34-45°
63
during the **first 20-30°** of **humeral elevation** how much scapular motion is there
none of
64
when is there **no scapular motion**
initial 20-30° of humeral elevation
65
60° of ST upward rotation occurs which also include how 25° of SC ____ and 35° of AC postieror ___
elevation rotation
66
during **over head extension** what happens at the scap
elevation upward rotation posterior tilt - if pec minor is tight then it will prevent this ## Footnote elvated and upwardly rotated by upper trap , lower trap and SA
67
what way does **subscapularis** provide stability
anteriorly
68
do we usually see scap winging in standing? why or why not
no bc scapular winging needs movement to occur by should flexion but usually seen when bringing arms down winging bc weakness of SA
69
how do the deltoid lift the arm if no rotator cuff actived
elevated shoulder to lift
70
what usually happens w **protraction** at the **scap**
ER
71
during initial arm elevation , the larger , more powerful deltoid has a directional force on the humerus in what direction
upward and outward
72
the superior directed force of the deltoid is counteracted by what directed forces created by what 3 muscles
inferior and medial infraspinatus , subscapularis , teres minor
73
what muscle provides a direct compression force , compression the humeral head into the glenoid
supraspinatus
74
synergistic force couple occurs at the lowe portion of the ___ ___ and ___ ___ contract in conjunction with the ___ ___ to created a ___ scapular rotation that occurs through the ROM
SA and lower trap upper trap upward
75
What are the 4 crucial functions in the shoulder that the **trapezius and serratus anterior** force couple do
1. Allows for rotation of the scap, maintaining the glenoid surface for optimal positions with the humerus 2.miantains an efficient length tension relationship for the delt 3. Prevents impingement of the rotator cuff from the subacromial structures 4. Provides a stable scapular base enabling appropriate recruitment of the scapulohumeral mm
76
what does the serratus anterior do
Protracts , upwardly rotates (most important) and stabilizes the scapula against the thorax
77
What does the SA work in combination with to produce upward rotation
Combination with the upper and lower trap
78
The **lowest** 4 digitations of the **SA** interdigitate with the fibers of the ___ ____
External oblique
79
What is the **most powerful and prominent** part of the **serratus anterior**
Lower/inferior part : 4th to 9th rib
80
What is the **upper part** of teh **SA** best suited for
Scapular abduction or protraction movements
81
What is the main functional of **middle trap**
stabilizes the scap when the arm is over head
82
83
When what 3 muscles work together do they create not only an inferior dynamic stability but also the **concavity compression mechanism**
Anterior based subscapularis Posterior based infra Teres minor
84
What stabilize that shoulde joint by acting as a suspension bridge providing a stable function to allow for concentric rotation fo the numeral head on the glenoid
Intact rotator cuff mm
85
When are the **rotator cuffs** knowns to be active
Mid ranges of shoulder elevation
86
When the **rotator cuffs** work together what do they do at the **humeral head**
Depress and compress into the glenoid
87
In the presence of an isolated suprspinatus tear would the anterior posterior force couple of the rotator cuff still remain?
Yes
88
What is the function of the serratus anterior
Protracts Upwardly rotates (MAIN) Stabilizes the scapula against the thorax
89
What is the SA innervated by
Long thoracic nerve (c5-c7)
90
Where does the SA insert
Anterior medial margin of scap
91
92

A: ther ex: UQ (9 decks)

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