Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Kinesiology II > Shoulder > Flashcards

Shoulder Flashcards

(72 cards)

Start Studying
1
Q

What is the reference point of the AC joint?

A

Front of the acromion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the ROM at the SC joint in the frontal plain?

A

45 degrees elevation

10 degrees depression

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the ROM at the SC joint in the horizontal plane?

A

15-30 degrees protraction

15-30 degrees retraction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

In retraction at the SC joint, the [convex/concave] clavicle moves on the [convex/concave] sternum. Disc moves with the clavicle to avoid bone to bone contact.

A

Concave; convex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Clavicular posterior rotation is associated with shoulder [abduction/adduction] and [extension/flexion].

A

Abduction; flexion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

True or false:

There is active anterior rotation, but very little.

A

False. there is NO active rotation (just compression of the joint)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the ROM at the SC joint for posterior rotation?

A

20-35 degrees (sagittal plane)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the arthrokinimatic relationship occurring at the SC joint during elevation? what is the check reign lig. for this movement?

A

Convex clavicle rolls superior, and slides inferior on concave sternum; CCL

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the arthrokinimatic relationship occurring at the SC joint during depression? what is the check reign lig. for this movement?

A

Convex clavicle rolls inferior and slides superior on concave sternum; SCL and ICL

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

With 2:1 scapulohumeral rhythm, active shoulder abduction of 180 degrees consists of 120 degrees ________ motion and 60 degrees of upward ______ rotation.
This describes Principle ___

A

Glenohumeral; scapular; 1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Principle 2: What is the result of 60 degrees of upward rotation of the scapula at the scapulothoracic joint during shoulder abduction?

A

simultaneous elevation at the SC joint combined with upward rotation at the AC joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Principle 3: The clavicle _____ at the SC joint during abduction

A

retracts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Principle 4: The scapula at the AC joint ______ and _______ during full shoulder abduction

A

posteriorly tilts; externally rotates

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Principle 5: The clavicle at the SC joint _______ around its own axis during abduction

A

posteriorly rotates

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Principle 6: The GH joint ______ rotates during shoulder abduction

A

externally

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are the proximal stabilizers of the shoulder?

A
  1. Serratus anterior

2. Trapezius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What are the distal mobilizers of the shoulder?

A
  1. Biceps brachii

2. Deltiod

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What are the distal mobilizers of the shoulder?

A
  1. Biceps brachii

2. Deltiod

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

With a rounded shoulder, what muscles get shortened? lengthened?

A 
Shortened = Lats, Pec minor, Subclavius
Lengthened = Lower trap
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Name the scapulothoracic depressors.

A
  1. Lower trap
  2. Lats
  3. Pec minor
  4. subclavius
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Name the scapulothoracic elevators

A
  1. Upper traps
  2. Levator scapula
  3. rhomboids
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What is the only muscle capable of producing scapular upward rotation, posterior tilting and external rotation of the AC joint?

A

Serratus anterior

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Name the scapulothoracic retractors

A
  1. Middle Trapezius
  2. Rhomboids
  3. Lower Trapezius
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Elevation tendency of rhomboids neutralized by depression tendency of _____.

A

lower traps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Elevation of Arm requires cooperative effort from
1. Glenohumeral m's 2. Scapulothoracic m's 3. Rotator Cuff Muscles
26
Name the muscles involved in upward rotation force coupling
1. Upper Traps 2. Lower Traps 3. Serratus Anterior
27
Name the muscles involved in downward rotation force coupling
1. Latissumus Dorsi 2. Rhomboids 3. Pectoralis Minor
28
What is needed for end range shoulder extension?
Anterior tilt of the scapular
29
Drives the superior roll of humeral head; Compresses the humeral head firmly against the glenoid fossa; Creates a semi-rigid spacer above the humeral head, restriction excessive superior translation of the humerus
Supraspinatus
30
Exerts a depression force on the humeral head
Infraspinatus, teres minor, and subscapularis
31
The medial end of the clavicle is usually _____ along its longitudinal diameter and _____ along its transverse diameter
Convex; concave
32
During abduction or flexion of the arm, how does the clavicle rotate and how many degrees does it rotate?
posteriorly; 20-35
33
What motions are you most likely to see winging?
IR and Ant tilt
34
Ligament that blocks posterior directed forces (humerus moving posterior)
Trapezoid ligament (of coracoclavicular lig)
35
Ligament that blocks superior directed forces (humerus moving superior)
Conoid lig (of coracoclavicualr lig
36
ST elevation = SC ___ + AC ___
Elevation; downward rotation
37
ST upward rotation = SC ___ + AC ___
Elevation; upward rotation
38
ST protraction = SC ___ + AC ___
Protraction; internal rotation
39
List the (3) functional importance of scapulothoracic upward rotation during arm elevation
1. Projects the glenoid fossa upward and anterior-laterally to provide a good base for further motion of the humerus 2. Preserves the optimal length-tension of the abductor muscles of glenohumeral joint 3. Maintains the volume within the subacromial space to prevent impingement
40
What is the approximate angle of inclination of the humeral head? what is the retroversion of the head?
135; 30 degrees, posteriorly rotated
41
What is the scaption plane?
10 degrees anterior tilt 5-10 degrees of upward rotation 35 degrees IR
42
The position of the scapula on the throrax provides a base of operation for the ____ joint
GH
43
Ligament that stabilizes the SC joint through all motions, except depression of the clavicle
Costoclavicular lig
44
Separates the SC joint into distinct medial and lateral joint cavities
articular disc
45
What is the primary purpose of the 3 degrees of freedom at the SC joint?
to place the scapula at an optimal position to accept the head of the humerus
46
The AC joint is separated by a complete or incomplete articular disc. Why do some people have incomplete articular discs?
indicative of degeneration that affects this joint
47
A fully upward rotated scapula is an important component in arm elevation (⅓ of the 180 degrees of abduction or flexion). What 3 important functions does the upward rotation serve?
1. projects the glenoid fossa upward and anterolaterally providing a base to maximize the upward and lateral reach of the UE 2. Preserves optimal length-thesnion relationship of the abductor muscles of the GH joint 3. maintains the volume within the subacromial space
48
What is the inferior portion of the GH joint capsule that appears slackened or redundant in an adducted position
axillary pouch
49
The AC's flat joint surfaces make it vulnerable to ____
shearing forces | - sup and inf ligs provide structural stability
50
What part of the coracoclavicular ligament blocs posterior directed forces (humerus moving posterior on the body)? what part blocks superior directed forces?
trapezoid; conoid
51
What is the open packed position for the AC joint? close packed? capsular pattern?
arm relaxed by the side; | 90 Abd; extremes of motion
52
What is the open packed position for the SC joint? close packed? capsular pattern?
Arm resting at side; arm elevated w/ posterior rotation, elevation at SC joint; extremes of motion
53
Which way is the inferior angle of the scapula moving in anterior tilt?
posteriorly
54
What are the motions at the SC joint?
Elevation/depression (frontal plane) Protraction/ retraction (horizontal plane posterior rotation (sagittal)
55
What are the motions at the AC joint?
Upward/ downward rotation (frontal plane) Anterior/ post tilt (saggital plane) IR/ ER (horizontal plane)
56
What are the motions at the scapulothoracic joint?
Upward/ downward rotation (frontal plane) Protraction/ retraction (horizontal plane) Elevation/ depression (frontal plane)
57
SC Elevation + AC downward rotation =
Scapulothoracic elevation
58
SC Elevation + AC up rot =
Scapulothoracic upward rotation
59
SC protraction + AC IR =
Scapulothoracic protraction
60
How much of the articular surface of the humeral head does the glenoid fossa cover?
1/3
61
Area not protected by the RTC mulches but reinforce by the long head of the biceps and coracohumeral ligament; located between the supraspinatus and subscapularis
rotator interval
62
What makes up 50 % of the depth of the glenoid fossa?
Glenoid labrum
63
What passive mechanisms provide stability at the GH joint?
1. restrain provided by capsule, ligaments, aglenoid labrum and tendons 2. mechanical support predicated on ST posture 3. negative intracapsular pressure
64
What GH ligament limits extremes of ER?
middle GH lig
65
What GH lig restrains inferior and anterior-posterior translations of the humeral head and becomes taut in full adduction?
Superior GH lig
66
What GH lig is hammock-like, has three separate components, becomes taut in about 90 degrees of abd and becomes taut at extremes of ER and IR?
Inferior GH lig | - 3 parts = anterior band, posterior band, and axillary pouch (taut in abd)
67
What ligament is the strongest and thickest in the GH capsule?
anterior band of the inferior GH lig | - primary ligamentous restraint to anterior translation of the humeral head
68
What is ROM for arm abd
120 abd at GH j 60 scapular up rot - 180 total
69
What is ROM for arm flexion?
120 flex at GH j 60 scapular upward rot - 180 total
70
What is ROM for arm extension
65 degrees
71
What is ROM for arm ER? IR?
- 90 ER | - 70 IR
72
What is open pack position for GH joint? close pack? capsular pattern?
- OP = 55-70 abd, 30 horrid add, neutral rotation (splinting position to maximize blood flow to shoulder for healing) - CP = max ER and abd (frozen shoulder) - capsular = ER > Abd > IR

Kinesiology II (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions