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

Ch.5 Shoulder Joint Flashcards

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
Q

Shoulder joint movements: Movement of humerus in a diagonal plane toward midline of body

A

Diagonal adduction

26
Q

Enhances stability by deepening the concavity of the fossa

A

Glenoid labrum

27
Q

Injury: superior labral tear ant. to post.

A

SLAP tear

28
Q

Symptoms of SLAP tear

A

Locking, grinding, pain, ↓ in strength, ↓ROM, feeling of shoulder popping out of joint

29
Q

GIRD Injury

A

Glenohumeral internal rotation deficit

30
Q

What plexus do all shoulder joint muscle innervate from?

A

Brachial plexus

31
Q

Rotator cuff group SSITm

A

Subscapularis, supraspinatus,
infraspinatus and teres minor

32
Q

Intrinsic Glenohumeral muscles

A

• O: scapula and clavicle
• Deltoid, coracobrachialis, teres
major
• Rotator cuff group
• Subscapularis, supraspinatus,
infraspinatus and teres minor

33
Q

Extrinsic Glenohumeral muscles

A

Latissimus dorsi, pectoralis major

34
Q

Anterior shoulder joint muscles

A

• Pectoralis major
• Coracobrachialis
• Subscapularis

35
Q

Superior shoulder joint muscles

A

• Deltoid
• Supraspinatus

36
Q

Posterior shoulder joint muscles

A

• Latissimus dorsi
• Teres major
• Infraspinatus
• Teres minor

37
Q

O&I: Deltoid muscles

A

• O: clavicle, acromion, scapula
• I: humerus

38
Q

Anterior, posterior, and middle fibers of the deltoid muscles

A

• 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
Q

O&I of Pectoralis major muscle

A

• O: clavicle, ribs, sternum
• I: humerus

40
Q

Upper and lower fiber movements of Pectoralis major muscle

A

internal rotation, horizontal
adduction, diagonal adduction, extension from flexed position and adduction

41
Q

O&I Latissimus Dorsi muscle

A

• O: Ilium, spinous process of
T6-T12
• I: humerus

42
Q

How can Latissimus dorsi be accentuated further?

A

By laterally flexing and
rotating the trunk to the
opposite side

43
Q

O&I of Teres Major muscle

A

• O: scapula
• I: humerus

44
Q

What muscle helps the Latissimus dorsi?

A

Teres major

45
Q

Stretching of the teres major

A

External rotation of the shoulder
in 90º abduction

46
Q

O&I of coracobrachialis muscle

A

• O: scapula
• I: humerus

47
Q

What are the rotator cuff muscles vital for?

A

Vital in maintaining humeral head within glenoid fossa while more powerful muscles move humerus through its wide ROM

48
Q

What are the rotator cuff muscles and the O&I?

A

• Supraspinatus
• Infraspinatus
• Teres minor
• Subscapularis
• O: scapula
• I: humerus

49
Q

What is the most injured rotator cuff muscle?

A

Supraspinatus muscle

50
Q

What is the most powerful external rotator muscle?

A

Infraspinatus

51
Q

Glenohumeral flexion agonist muscles

A

• Deltoid
• Pectoralis major

52
Q

Glenohumeral extension

A

-Teres major
• Latissimus dorsi
• Pectoralis major

53
Q

Glenohumeral abduction agonist muscles

A

• Deltoid
• Supraspinatus
• Pectoralis major

54
Q

Glenohumeral addiction agonists

A

• Latissimus dorsi
• Teres major
• Pectoralis major

55
Q

Glenohumeral internal rotation agonists

A

• Latissimus dorsi
• Teres major
• Subscapularis
• Pectoralis major

56
Q

Glenohumeral external rotation agonists

A

Infraspinatus
• Teres minor

57
Q

Glenohumeral horizontal abduction agonists

A

• Deltoid
• Infraspinatus
• Teres minor

58
Q

Glenohumeral horizontal adduction agonists

A

• Deltoid
• Pectoralis major
• Coracobrachialis

59
Q

Glenohumeral diagonal abduction agonists

A

• Deltoid
• Infraspinatus
• Teres minor

60
Q

Glenohumeral diagonal adduction agonists

A

• Deltoid
• Coracobrachialis
• Pectoralis major

Kinesiology 3200 Principles of Human Movement (11 decks)

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