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Kinesiology 3200 Principles of Human Movement > Ch.5 Shoulder Joint > Flashcards

Ch.5 Shoulder Joint Flashcards

(60 cards)

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1
Q

What skeleton is the shoulder joint attached to, and where?

A

The axial skeleton at the SC joint clavicle

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2
Q

T/F Wide ROM of the shoulder joint requires a significant amount of laxity

A

True

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3
Q

The greater the mobility,

A

The lower the stability

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4
Q

3 types of instability problems

A

• Rotator cuff impingement
• Subluxations(minor dislocation) and dislocations

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5
Q

Main bones in attachments for shoulder joint muscles(3)

A

• Scapula, clavicle, and
humerus

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6
Q

What are the fossa’s in the bony scapular landmarks? (3)

A

• Supraspinous fossa
• Infraspinous fossa
• Subscapular fossa

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7
Q

5 bony humeral landmarks (HGtLtIgDt)

A

• Head
• Greater tubercle
• Lesser tubercle
• Intertubercular groove
• Deltoid tuberosity

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8
Q

Where does the glenoid fossa and the humerus meet?

A

Glenohumeral joint

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9
Q

Joints in the GH Joint?

A

-Multiaxial enarthrodial
- ball-and-socket joint

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10
Q

Glenohumeral joint + shoulder girdle =

A

Shoulder ROM

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11
Q

For every 2º of glenohumeral motion…

A

there is 1º of scapula
motion

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12
Q

What relationship is scapulohumeral rhythm

A

Synergistic

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13
Q

Shoulder joint movements(5x2)

A

-Abduction & Adduction
-Flexion & Extension
-Horizonal A&A
-External/Internal rotation
-Diagonal A(Tf) &A(Tf)
T=transverse

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14
Q

Bony Scapular landmarks (SsGcApISaLMbSfIfSf)

A

• Spine of the scapula
• Glenoid cavity
• Coracoid process
• Acromion process
• Inf./sup. angle
• Lat./med. border
• Supraspinous fossa
• Infraspinous fossa
• Subscapular fossa

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15
Q

Where does the glenoid fossa and humerus meet?

A

Glenohumeral joint

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16
Q

Ligaments are lax until ______ is reached

A

Extreme ROM

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17
Q

What ligaments provide stability

A

Glenohumeral ligaments

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18
Q

Shoulder joint movements: Movement of humerus straight anteriorly

A

Flexion

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19
Q

Shoulder joint movements: Movement of humerus straight posteriorly

A

Extension

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20
Q

Shoulder joint movements: Movement of humerus toward and across chest/ transverse flexion

A

Horizontal adduction

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21
Q

Shoulder joint movement: Movement of humerus away from chest/ transverse extension

A

Horizontal abduction

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22
Q

Shoulder joint movements:
• Movement of humerus laterally away from midline
• With arm abducted, humerus is rotated ”up”

A

External rotation

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23
Q

Shoulder joint movements:
• Movement of humerus medially toward midline
• With arm abducted, humerus is rotated ”down”

A

Internal rotation

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24
Q

Shoulder joint movements:
• Movement of humerus in a diagonal
plane away from midline of body

A

Diagonal abduction

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25
Shoulder joint movements: Movement of humerus in a diagonal plane toward midline of body
Diagonal adduction
26
Enhances stability by deepening the concavity of the fossa
Glenoid labrum
27
Injury: superior labral tear ant. to post.
SLAP tear
28
Symptoms of SLAP tear
Locking, grinding, pain, ↓ in strength, ↓ROM, feeling of shoulder popping out of joint
29
GIRD Injury
Glenohumeral internal rotation deficit
30
What plexus do all shoulder joint muscle innervate from?
Brachial plexus
31
Rotator cuff group SSITm
Subscapularis, supraspinatus, infraspinatus and teres minor
32
Intrinsic Glenohumeral muscles
• O: scapula and clavicle • Deltoid, coracobrachialis, teres major • Rotator cuff group • Subscapularis, supraspinatus, infraspinatus and teres minor
33
Extrinsic Glenohumeral muscles
Latissimus dorsi, pectoralis major
34
Anterior shoulder joint muscles
• Pectoralis major • Coracobrachialis • Subscapularis
35
Superior shoulder joint muscles
• Deltoid • Supraspinatus
36
Posterior shoulder joint muscles
• Latissimus dorsi • Teres major • Infraspinatus • Teres minor
37
O&I: Deltoid muscles
• O: clavicle, acromion, scapula • I: humerus
38
Anterior, posterior, and middle fibers of the deltoid muscles
• Anterior fibers -abduction, flexion, horizontal adduction, diagonal adduction and internal rotation • Posterior fibers -abduction, extension, horizontal abduction, diagonal abduction and external rotation • Middle fibers -abduction
39
O&I of Pectoralis major muscle
• O: clavicle, ribs, sternum • I: humerus
40
Upper and lower fiber movements of Pectoralis major muscle
internal rotation, horizontal adduction, diagonal adduction, extension from flexed position and adduction
41
O&I Latissimus Dorsi muscle
• O: Ilium, spinous process of T6-T12 • I: humerus
42
How can Latissimus dorsi be accentuated further?
By laterally flexing and rotating the trunk to the opposite side
43
O&I of Teres Major muscle
• O: scapula • I: humerus
44
What muscle helps the Latissimus dorsi?
Teres major
45
Stretching of the teres major
External rotation of the shoulder in 90º abduction
46
O&I of coracobrachialis muscle
• O: scapula • I: humerus
47
What are the rotator cuff muscles vital for?
Vital in maintaining humeral head within glenoid fossa while more powerful muscles move humerus through its wide ROM
48
What are the rotator cuff muscles and the O&I?
• Supraspinatus • Infraspinatus • Teres minor • Subscapularis • O: scapula • I: humerus
49
What is the most injured rotator cuff muscle?
Supraspinatus muscle
50
What is the most powerful external rotator muscle?
Infraspinatus
51
Glenohumeral flexion agonist muscles
• Deltoid • Pectoralis major
52
Glenohumeral extension
-Teres major • Latissimus dorsi • Pectoralis major
53
Glenohumeral abduction agonist muscles
• Deltoid • Supraspinatus • Pectoralis major
54
Glenohumeral addiction agonists
• Latissimus dorsi • Teres major • Pectoralis major
55
Glenohumeral internal rotation agonists
• Latissimus dorsi • Teres major • Subscapularis • Pectoralis major
56
Glenohumeral external rotation agonists
Infraspinatus • Teres minor
57
Glenohumeral horizontal abduction agonists
• Deltoid • Infraspinatus • Teres minor
58
Glenohumeral horizontal adduction agonists
• Deltoid • Pectoralis major • Coracobrachialis
59
Glenohumeral diagonal abduction agonists
• Deltoid • Infraspinatus • Teres minor
60
Glenohumeral diagonal adduction agonists
• Deltoid • Coracobrachialis • Pectoralis major

Kinesiology 3200 Principles of Human Movement (11 decks)

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