THE%20SHOULDER%20JOINT

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THE SHOULDER JOINT

• Chapter 5

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Bones

• Humerus
• Scapula
• Clavicle

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Humerus Anterior View

• 1. Head
• 2. Lesser tubercle
• 9. Intertubercular Groove
• 10. Greater tubercle

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Humerus Posterior View
1. Head 5. Deltoid tuberoscity
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Deltoid Tuberoscity
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Scapula Posterior View

1. Acromion process
2. Spine
3. Superior angle
4. Inferior angle
5. Medial (Vertebral) border
6. Lateral (Auxiliary) border
7. Supraspinous fossa
8. 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
4.

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

1.
2.
3.
5.
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Can You Name Them?
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Joints

• There are two joints to the shoulder complex
• The acromioclavicular (AC) joint where the
  clavicle meets the acromion.
• The glenohumeral joint or the shoulder joint.

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Shoulder Joint

• Ball and socket joint
• Movement in all three planes
• Glenoid fossa
• Glenoid labrum
• Head of humerus

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Joint Capsule
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Joint Capsule

• Four ligaments are the main source of stability
  for the shoulder, and help to keep the shoulder
  from dislocating.
• Superior glenohumeral ligament
• Coracohumeral
• Middle glenohumeral ligament
• Inferior glenohumeral ligament

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Other Ligaments

• The coracoacromial ligament connects the coracoid
  process and the acromion process

Coracoacromial ligament
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coracoacromial
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Bursa

• A bursa is a saclike structure containing
  lubricating fluid and located between a tendon
  and a bone or between moving structures.

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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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Actions Sagittal plane
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Actions Frontal plane
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Actions Transverse plane
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Actions Transverse plane
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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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Shoulder 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