The%20Shoulder%20Complex - PowerPoint PPT Presentation

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The%20Shoulder%20Complex

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Title: The%20Shoulder%20Complex


1
The Shoulder Complex
2
Muscles of the AC Joint
  • Chapter 4

3
Movements of the Scapula
  • 1. Elevation
  • 2. Depression
  • 3. Adduction (retraction)
  • 4. Abduction (protraction)

5. Downward rotation 6. Upward rotation
4
Anterior Muscles
  • Pectoralis Minor
  • Serratus Anterior

5
Pectoralis Minor
  • Origin Anterior surface of 3, 4, and 5 ribs
  • Insertion Coracoid process
  • Actions
  • AC Abduction
  • Downward rotation
  • Depression

6
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7
Serratus Anterior
  • Origin Lateral surface of upper 8 ribs
  • Insertion Anterior surface of medial border and
    inferior angle of scapula.
  • Actions
  • AC Abduction
  • Upward Rotation

8
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9
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10
Posterior Muscles
  • Levator Scapluae
  • Trapezius
  • Rhomboid

11
Levator Scapulae
  • Origin Transverse processes of the first 4
    cervical vertebrae.
  • Insertion Superior angle and medial border of
    the scapula.
  • Actions Elevation

12
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13
Trapezius
  • Origin Occipital bone, ligamentum nuchae,
    spinous process of the C7 and all
    Thorasic vertebrae
  • Insertion
  • 1. Lateral 1/3 of clavicle.
  • 2. Top of Acromion process.
  • 3. Upper border of spine of the scapula.
  • 4. Medial surface of spine of the scapula.

  • Actions
  • Upper elevation of the scapula
  • Middle elevation, upward rotation, AC
    adduction
  • Lower depression, AC adduction and upward
    rotation

14
  • Upper elevation
  • Middle elevation, upward rotation, adduction
  • Lower depression, adduction and upward rotation

15
Pull of the lower fibers
Movement of scapula
16
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17
Rhomboid (major and minor)
  • Origin Ligamentum nuchea and spinous process of
    C1-7 and 2-5 T
  • Insertion Medial border of the scapula
  • Actions
  • AC Adduction
  • Downward rotation,
  • Elevation

18
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19
Subclavius
  • Origin Superior aspect of first rib
  • Insertion Inferior aspect at mid-clavicle
  • Action
  • Depression
  • Stabilization

20
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21
Muscles of the Shoulder Joint
  • Chapter 5

22
Anterior Shoulder (GH Joint) Muscles
  • Coracobrachialis
  • Pectoralis Major
  • Subscapularis

23
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24
Coracobrachialis
  • O Coracoid process
  • I Anteromedial surface of midshaft of humerus
  • Actions
  • Flexion
  • Adduction of the shoulder
  • Horizontal Adduction

25
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26
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27
Pectoralis Major
  • Origin
  • Medial two-thirds of clavicle
  • Sternum
  • Insertion intertubercular groove
  • Actions
  • Upper fibers (Clavicular)
  • Internal rotation
  • Horizontal Adduction
  • Flexion
  • GH Adduction
  • Abduction w/ Arm above 90 degrees
  • Lower fibers (Sternal)
  • Internal Rotation
  • Horizontal adduction
  • Extension
  • GH Adduction

28
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29
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30
Subscapularis
  • O Subscapular fossa
  • I Lesser tubercle and crest of humerus
  • Actions
  • Internal Rotation
  • GH Adduction
  • Extension from flexed position
  • Stabilization
  • Anterior Rotator Cuff Muscle.

31
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32
Superior Shoulder Muscles
  • Deltoid
  • Supraspinatus

33
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34
Deltoid
  • Origin
  • Lateral 1/3 of clavicle (Anterior
    fibers)
  • Acromion process (Middle fibers)
  • Spine of scapula (Posterior
    fibers)
  • Insertion deltoid tuberosity
  • Actions
  • Anterior GH Abduction, Flexion, Horizontal
    adduction, Internal rotation.
  • Middle GH Abduction
  • Posterior GH Abduction, Extension, Horizontal
    abduction, External rotation

35
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36
Supraspinatus
  • O Supraspinous fossa
  • I Greater tubercle
  • Action
  • GH Abduction
  • Stabilization
  • Superior Rotator Cuff Muscle.

37
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38
Inferior Shoulder Muscles
  • Latissimus Dorsi
  • Teres Major

39
Latissimus Dorsi
  • O Spinous process of lower 6 thorasic and all
    lumbar and sacral vertebrae iliac crest
  • I Intertubercular groove
  • Actions
  • Extension
  • GH Adduction
  • Horizontal Abduction

40
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41
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42
Teres Major
  • O Inferior angle of scapula
  • I Intertubercular groove
  • Actions
  • Extension
  • GH Adduction
  • Internal rotation
  • Lats little helper

43
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44
Posterior Shoulder Muscles
  • Infraspinatus
  • Teres Minor

45
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46
Infraspinatus
  • O Infraspinous fossa
  • I Greater tubercle
  • Actions
  • External rotation
  • Horizontal abduction
  • Extension
  • Stabilization
  • Posterior Rotator Cuff Muscle

47
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48
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49
Teres Minor
  • O Upper 2/3 of lateral border of scapula
  • I Greater tubercle
  • Actions
  • External rotation
  • Horizontal abduction
  • Extension
  • Stabilization
  • Posterior Rotator Cuff Muscle

50
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51
Practice
  • Name the actions of the shoulder (GH) joint.
  • Flexion
  • Extension
  • Adduction
  • Abduction
  • Horizontal adduction
  • Horizontal abduction
  • Medial rotation
  • Lateral rotation.
  • Name the actions of the scapula (AC joint)
  • Elevation
  • Depression
  • Adduction (retraction)
  • Abduction (protraction)
  • Upward rotation an
  • Downward rotation.

52
Scapula
Adduction Abduction Upward Rotation Downward Rotation
Trap (middle) Pect Minor Serratus Ant. Pect Minor
Trap (lower) Serratus Ant. Trap (middle) Rhomboid
Rhomboids Trap (lower)
53
Practice
  • Name the muscles for Horizontal Adduction
  • Pect Major (upper)
  • Pect Major (lower)
  • Corachobrachialis
  • Deltoid (anterior)
  • Name the muscles for Horizontal Abduction
  • Deltoid (post)
  • Infraspinatus
  • Teres minor
  • Lats

54
Practice
  • List the muscles the do flexion of the shoulder
  • List the muscles the do AC adduction

55
Name the muscle.
Coracobrachialis
Name the action
Adduction of the shoulder
56
Name the muscle.
Pectoralis Major
57
Name the muscle.
Rhomboid
Name the action
Adduction of scapula
58
Name the muscle.
Pectoralis minor
Name the action
Depression of the scapula
59
Name the muscle.
Subscapularis
Name the action
Internal rotation of the shoulder
60
Name the muscle.
Trapezius
Name the action
Adduction of the scapula
Name the action
Upward rotation
61
Name the muscle.
Levator scapula
Name the action
Elevation of the scapula
62
Name the muscle.
Deltoid
Name the action
Abduction of shoulder
63
Name the muscle.
Infraspinatus
Name the action
External rotation
64
Name the action
Name the muscle.
Adduction of scapula
Teres Major
65
Name the muscle.
Serratus Anterior
Name the action
Abduction of scapula
66
Name the muscle.
Teres Minor
Name the action if the humerus move directly to
the posterior
Extension of the shoulder
67
Name the muscle.
Supraspinatus
Name the action
Abduction of the shoulder
68
?
Latissimus Dorsi
69
Coracobrachialis
Pect. Major
Subscapularis
Deltoid
70
Supraspinatus
Teres Major
Infraspinatus
Teres Minor
71
Pectoralis Minor
Levator Scapula
Rhomboid
72
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73
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74
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75
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76
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77
?
  • Origin Occipital bone, ligamentum nuchae,
    spinous process of the C7 and all Thorasic v.
  • Insertion
  • 1. Lateral 1/3 of clavicle.
  • 2. Top of Acromion process.
  • 3. Upper border of spine of the scapula.
  • 4. Medial surface of spine of the scapula.
  • Actions
  • Upper elevation
  • Middle retraction and upward rotation
  • Lower depression and upward rotation

78
?
  • Origin Supraspinatus fossa
  • Insertion Greater tubercle of the humerus
  • Action Weak abduction stabilization
  • Name another muscle that abducts the shoulder.

79
?
  • Origin Medial 2/3 of the clavicle medial
    portion of the first 6 ribs the adjoining
    sternum.
  • Insertion Outer lip of the intertubercular
    groove.

80
?
  • Origin 1) posterior crest of the iliac crest, 2)
    back of the sacrum and spinous processes of the
    lumbar and the lower 6 thorasic vertebrae and 3)
    inferior angle in some
  • Insertion Intertubercle groove
  • Name a muscle that would have the same actions as
    this one.

81
?
  • Origin Ligamentum nuchea and spinous process of
    C1-7 and 2-5 T
  • Insertion Medial border of the scapula
  • Actions Downward rotation, retraction, and
    elevation

82
?
  • Origin Lateral surface of upper 8 ribs
  • Insertion Anterior surface of medial border and
    inferior angle of scapula.
  • Actions Protraction (upper) and Upward Rotation
    (upper and lower)

83
?
  • Origin lateral 1/3 of clavicle, border of
    Acromion, lower edge of the spine of the scapula
  • Insertion deltoid tuberosity on the lateral
    side of the humerus
  • Actions
  • Anterior Flexion, medial rotation and abduction
  • Middle Abduction
  • Posterior Extension, lateral rotation and
    abduction

84
?
  • Origin Transverse processes of the first 4
    cervical vertebrae.
  • Insertion Superior angle and medial border of
    the scapula.
  • Action Elevation
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