1. THE SHOULDER JOINT Chapter 5

2. Bones Humerus Scapula Clavicle

3. Humerus – Anterior View 1. Head 2. Lesser tubercle 9. Intertubercular Groove 10. Greater tubercle

4. 1. Head 5. Deltoid tuberoscity Humerus – Posterior View

5. Deltoid Tuberoscity

6. Scapula – Posterior View  Acromion process  Spine  Superior angle  Inferior angle  Medial (Vertebral) border  Lateral (Auxiliary) border  Supraspinous fossa  Infraspinous fossa 1. 2. 3. 4. 5. 6. 7. 8.

7. 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. 3. 4. 5. 6. 7. 8.

8. Scapula – Proximal (Top) View 1. Acromion process 2. Coracoid process 3. Glenoid fossa or cavity 4. Spine 5. Supraspinous fossa 1. 2. 3. 4. 5.

9. Scapula – Lateral View 1. Acromion process 2. Coracoid process 3. Glenoid fossa or cavity 4. Superior angle 5. Inferior angle 1. 2. 3. 4. 5.

11. Can You Name Them?

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

13. Shoulder Joint Ball and socket joint –Movement in all three planes Glenoid fossa Glenoid labrum Head of humerus

14. Joint Capsule

15. Four ligaments are the main source of stability for the shoulder, and help to keep the shoulder from dislocating. 1.Superior glenohumeral ligament 2.Coracohumeral 3.Middle glenohumeral ligament 4.Inferior glenohumeral ligament

16. Other Ligaments The coracoacromial ligament connects the coracoid process and the acromion process Coracoacromial ligament

17. coracoacromial

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

19. 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

20. Actions: Sagittal plane

21. Actions: Frontal plane

22. Actions: Transverse plane

24. Abduction/AdductionFlexion/Extension

25. Internal Rotation/External Rotation

26. Horizontal Adduction

27. Horizontal Abduction

28. 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