1. Shoulder Girdle

2. Shoulder Girdle Shoulder Complex is the most mobile joint in the body.
Scapula
Clavicle
Sternum
Humerus
Rib cage/Thorax

3. Shoulder Girdle Points of interest Scapula Acromion process
Glenoid fossa

4. Shoulder Girdle Lets take a look at the parts
Then lets build with clay and figure out the joints locations on your own.
I will come around in 10 minutes and ask random people to show me the joint they made and tell me where the joint is.

5. Shoulder Girdle It also includes Sternoclavicular joint
Acromicoclaviulcar joint
Glenohumeral joint
Scapulothoracic articulation

6. Shoulder Girdle Ligaments
Sternoclaviular Joint-Joint connecting the sternum to the clavicle on each side of the body.

7. Shoulder Girdle Ligaments
Acromioclavicular Joint- joint connecting the acromion process to the clavicle at the distal end of the clavicle.

8. Shoulder Girdle Joints
Glenohumeral joint- joint where the humerus fits into the glenoid fossa of the scapula.

9. Shoulder Girdle Ligaments
Scapulothoracic joint- joint where the scapula slides over the thorax or rib cage.

10. Shoulder Girdle Motions
Shoulder girdle is the motions at the
Acromioclavicular joint
Sternoclavicular joint
Elevation/depression
Protraction/retraction
Upward/downward rotation

11. Scapula Landmarks
Go to the skeleton, there are numbers on each one, using your book write the number and the landmark’s name.
You are going to do this in lab groups so get your lab binder for this activity.

12. Scapula Landmarks
Axillary border- lateral side between glenoid fossa and inferior angle.

13. Scapula Landmarks
Vertebral border- between superior and inferior angles medially. Where the rhomboid and serratus anterior muscles attach.

14. Scapula Landmarks Spine of the scapula
Projection on posterior surface running from medial border to the acromion process.

15. Scapula Landmarks
Glenoid fossa- slightly concave surface that articulates with humerus.

16. Scapula Landmarks
Acromion process-broad flat area on superior lateral aspect.

17. Scapula Landmarks
Coracoid process-Projection on anterior surface of scapula. (e)

18. Scapula landmarks
Inferior and Superior Angle- superior medial and inferior point of the scapula.

19. Shoulder Girdle Bones
Clavicle-S shaped bone that connects upper extremity to the axial skeleton.

20. Shoulder Girdle Bones
Sternum-flat bone located in the midline of the anterior thorax.
Manubrium-top
Body-Middle
Xiphoid process
bottom triangle

21. Shoulder Ligaments
Acromioclavicular ligament- connect accromion to clavicle and help prevent dislocation of the clavicle.

22. Shoulder Ligament
Coracoacromial Ligament- Connects the coracoid process to the acromion process.

23. Acromicavicular Separation
Also known as an AC sprain.
Occurs due to fall on outstretched arm or tip of shoulder. May be due to blow to tip of shoulder

24. AC separation Treatment Signs and Sx
Three grades –the grade determines treatment
Grade one is exercise and ice
Grade two immobilize 3 weeks and then exercise
Grade three immobilize 5 weeks and then exercise
Signs and Sx
deformity
Pain in vicinity of AC
Special Test
Shear Test
Sulcus Sign

25. Joint motions Shoulder Shoulder girdle Flexion Extension
Hyperextension
Adduction
Abduction
Medial rotation
Lateral rotation
Shoulder girdle
Up rotation
Down rotation
Scapular tilt
Protraction
Retraction

26. Scapulohumeral rhythm
The first 30 degrees of motion is shoulder.
After that the for every 2 degrees the humerus moves the scapula upwardly rotates 1 degree.

27. Lets try it
Stand next to a partner that you are comfortable touching on their back.
Person in anatomical position, place your hand on the axillary border of the scapula. Ask them to abduction and see what happens when they get above 30 degrees.
The scapula will start rotating upward

28. Muscles of shoulder girdle
Trapezius- 3 lines of pull
Upper trapezius
Middle trapezius
Lower trapezius

29. Muscles of shoulder girdle
Levator scapula- named for the elevation of the scapula, its main function.

30. Muscles of shoulder girdle
Rhomboid- major and minor. They get their name from Rhomboid shape, they lie under the trapezius.

31. Muscles of shoulder girdle
Serratus Anterior- serrated shape can be touched in full flexion. It is a scapular protractor.

32. Muscles of shoulder girdle
Pectoralis minor- only shoulder girdle muscle on the anterior side, it lies deep to the pectoralis major.