THE SHOULDER GIRDLE

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THE SHOULDER GIRDLE

• THE ACROMIOCLAVICULAR (AC) JOINT

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THE BONES
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Clavicle
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Humerus Anterior View

• 1. Head
• 2. Lesser tubercle
• 5. Medial epicondyle
• 6. Trochlea
• 7. Capitulum
• 8. Lateral epicondyle
• 9. Intertubercular Groove

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Humerus Posterior View
1. Head 5. Deltoid tuberosity 6. Lateral
epicondyle 7. Olecranon fossa 9. Medial
epicondyle
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Scapula
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Scapula Posterior View

• Acromion process
• Spine
• Superior angle
• Inferior angle
• Medial (Vertebral) border
• Lateral (Auxiliary) border
• Supraspinous fossa
• Infraspinous fossa

3.
1.
7.
2.
8.
5.
6.
4.
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Scapula Anterior View

• 1. Acromion process
• 2. Coracoid process
• 3. Glenoid fossa or cavity
• 4. Inferior angle
• 5. Superior angle
• 6. Medial (Vertebral) border
• 7. Lateral (Auxiliary) border
• 8. Supscapular fossa

1.
2.
5.
3.
8.
6.
7.
4.
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Scapula Proximal (Top) View

• 1. Acromion process
• 2. Coracoid process
• 3. Glenoid fossa or cavity
• 4. Spine
• 5. Supraspinous fossa

1.
4.
3.
5.
2.
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Scapula Lateral View

• 1. Acromion process
• 2. Coracoid process
• 3. Glenoid fossa or cavity
• 4. Superior angle
• 5. Inferior angle

4.
1.
2.
3.
5.
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Can You Name Them?
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II. JOINTS AND THEIR ACTIONS
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Sternoclavicular joint

• Depression
• Stabilization

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Acromioclavicular (AC) joint

• 1. Elevation
• 2. Depression
• 3. Adduction (Retraction)
• 4. Abduction (Protraction)
• 5. Upward rotation
• 6. Downward rotation

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Depression/Elevation
Protraction/Retraction
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Adduction
Abduction
Left Scapula
Right Scapula
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Left Scapula
Right Scapula
Upward Rotation
Upward Rotation
Downward Rotation
Downward Rotation
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AC Actions and Muscles

• ACTION
• Elevation
• Depression
• Adduction
• Abduction
• Upward rotation
• Downward rotation

• MUSLCE LOCATION
• Superior
• Inferior
• Medial
• Lateral
• Depends on the line of pull
• Depends on the line of pull

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THE SHOULDER JOINT

• THE GLENOHUMERAL JOINT

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Shoulder (Glenohumeral) joint

• 1. Abduction
• 2. Adduction
• 3. Flexion
• 4. Extension
• 5. Horizontal adduction
• 6. Horizontal abduction
• 7. External (lateral) rotation
• 8. Internal (medial) rotation

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Abduction/Adduction Flexion/Extension
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Internal Rotation/External Rotation
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Horizontal Adduction
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Horizontal Abduction
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GH Actions and Muscles

• ACTION
• Flexion
• Extension
• Adduction
• Abduction
• Horizontal Adduction
• Horizontal Abduction
• Internal Rotation
• External Rotation

• MUSLCE LOCATION
• Anterior
• Posterior
• Inferior
• Superior
• Medial
• Lateral
• Medial
• Lateral