1. THE ACROMIOCLAVICULAR (AC) JOINT
THE SHOULDER GIRDLE
THE ACROMIOCLAVICULAR (AC) JOINT

2. THE BONES

3. Clavicle

5. Humerus – Anterior View
1. Head
2. Lesser tubercle
5. Medial epicondyle
6. Trochlea
7. Capitulum
8. Lateral epicondyle
9. Intertubercular Groove

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

8. Scapula

9. 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.

10. 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.

11. 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.

12. 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.

14. Can You Name Them?

15. II. JOINTS AND THEIR ACTIONS

16. Sternoclavicular joint
Depression
Stabilization

17. Acromioclavicular (AC) joint
1. Elevation
2. Depression
3. Adduction (Retraction)
4. Abduction (Protraction)
5. Upward rotation
6. Downward rotation

18. Depression/Elevation Protraction/Retraction

19.                                              
                                             
Adduction
Abduction
Left Scapula
Right Scapula

20. Upward Rotation Upward Rotation Downward Rotation Downward Rotation
Left Scapula
Right Scapula
Upward Rotation
Upward Rotation
Downward Rotation
Downward Rotation

21. 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

22. THE GLENOHUMERAL JOINT
THE SHOULDER JOINT
THE GLENOHUMERAL JOINT

23. 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

24. Abduction/Adduction Flexion/Extension

25. Internal Rotation/External Rotation

26. Horizontal Adduction

27. Horizontal Abduction

28. 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