1. The Shoulder Girdle Chapter 4

2. Bones 1. Clavicle 2. Scapula 3. Sternum*

3. Sternum Manubrium

4. Clavicle

5. Scapula 1. coracoid process, 2. acromion process, 3. glenoid fossa, 4. lateral border, 5. inferior angle, 6. medial border, 7. superior angle, 8. spine of the scapula 9. subscapular fossa 10. supraspinous fossa 11. infraspinous fossa

6. Shoulder Girdle Joints

7. Sternoclavicular Joint arthrodial (gliding)

8. Acromioclavicular Joint arthrodial (gliding)

9. Sacpulothoracic Joint

10. Shoulder Girdle Actions The clavicle and scapula move as a unit Most of the movement occurs at the SC joint

11. Abduction / Adduction Also called Protraction / Retraction Transverse plane, Vertical axis

12. Downward Rotation / Upward Rotation Frontal plane, Sagittal axis

13. Depression / Elevation Frontal plane, Sagittal axis

14. Summary of Shoulder Girdle Actions

15. Skull

17. Abduction / Adduction Abduction of the AC joint = Horizontal adduction or flexion of the shoulder joint Adduction of the AC joint = Horizontal abduction or extension of the shoulder joint

18. Downward Rotation / Upward Rotation Downard rotation of the AC joint = Adduction of the shoulder joint Upward rotation of the AC joint = Abduction of the shoulder joint