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Transcript 
THE SHOULDER JOINT
Chapter 5
Bones
• Humerus
• Scapula
• Clavicle
Humerus – Anterior View
1. Head
2. Lesser tubercle
9. Intertubercular Groove
10. Greater tubercle
Humerus – Posterior View
1. Head
5. Deltoid tuberoscity
Deltoid
Tuberoscity
Scapula – Posterior View
1.
2.
3.
4.
5.
6.
7.
8.
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.
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.
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.
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.
Can You Name Them?
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.
Shoulder Joint
• Ball and socket joint
– Movement in all three
planes
• Glenoid fossa
• Glenoid labrum
• Head of humerus
Joint Capsule
Joint Capsule
•
1.
2.
3.
4.
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
Other Ligaments
• The coracoacromial
ligament connects the
coracoid process and the
acromion process
Coracoacromial
ligament
coracoacromial
Bursa
• A bursa is a saclike structure
containing lubricating fluid
and located between a
tendon and a bone or
between moving structures.
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
Actions: Sagittal plane
Actions: Frontal plane
Actions: Transverse plane
Actions: Transverse plane
Abduction/Adduction
Flexion/Extension
Internal Rotation/External Rotation
Horizontal Adduction
Horizontal Abduction
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
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