1. Upper Limb Regions • Shoulder • Arm & Forearm • Hand

3. Shoulder region • Bones • Joints • Muscles • Vessels & Nerves

4. Shoulder Osteology • Clavicle • Scapula • Humerus

6. Clavicle Sup. S shape Latin clavis = key, old Roman key was S-shaped

7. Clavicle Inf. Ligaments attachment Conoid: cone shape

8. Clavicle Ant. Medial & lateral ends

11. korax = a crow Posterior Anterior

12. Glene: Greek = socket acromion: Greek akros = Hill

15. Shoulder Separation

16. Ant. Lat.

20. Subacromial bursa Bursitis

21. Shoulder X-ray, AP projection 1, Clavicle. 2, Acromion. 3, Greater tubercle. 4, Lesser tubercle. 5, Neck of Humerus. 6, Humerus. 7, Coracoid Process. 8, Axillary border of scapula. 9, Rib.

22. Shoulder region • Bones • Joints • Muscles • Vessels & Nerves

23. Classifications of muscles that move the shoulder • A. muscles connecting scapula to humerus • B. muscles connecting trunk to scapula • C. muscles connecting trunk to humerus

24. Biceps & Triceps tendons

25. A. muscles connecting scapula to humerus • Supraspinatus • Infraspinatus • Teres minor • Subscapularis • Teres major • Coracobrachialis • Deltoid

26. Short muscles

28. Quiz supraspinatus infraspinatus teres minor subscapularis

29. Teres major • Origin: • Inf angle of scapula • Insertion: • Med lip of groove • Actions: • Internal rotation and adduction of arm

30. Coracobrachialis • Function:flex & adductthe shoulder joint

31. Deltoid Origin: Clavicle, scapula Insertion: Deltoid tuberosity of humerus Actions: Abduction Anterior deltoid: internal rotation Posterior deltoid: external rotation

32. Classifications of muscles that move the shoulder • A. muscles connecting scapula to humerus • B. muscles connecting trunk to scapula • C. muscles connecting trunk to humerus

33. B. muscles connecting trunk to scapula • Serratus anterior • Levator scapula • Rhomboid major • Rhomboid minor • Trapezius • Pectoralis minor

34. Serratus Anterior Origin: Ribs Insertion: Medial border of scapula Actions: Protraction and rotation of scapula

35. Levator scapula Origin: Cervical vertebrae Insertion: Scapula Action: Elevation of the scapula

36. Rhomboid major and minor Origin: Cervical and Thoracic vertebrae Insertion: Scapula Actions: Retraction Elevation

37. Trapezius Origin: Occipital bone of skull, cervical and thoracic vertebrae Insertion: Clavicle and Scapula Actions: Elevation retraction

38. Pectoralis Minor Origin: Ribs Insertion: Coracoid process of scapula Action: Depression of scapula

39. Classifications of muscles that move the shoulder • A. muscles connecting scapula to humerus • B. muscles connecting trunk to scapula • C. muscles connecting trunk to humerus

40. C. muscles connecting trunk to humerus • Pectoralis major • Latissimusdorsi

41. PectoralisMajor Origin: Clavicle, sternum, upper ribs Insertion: Crest of greater tubercle and lat lip Action: Add, med rotation

42. LatissimusDorsi Origin: Vertebrae, sacrum, ilium Insertion: Medial lip Actions: Adduction and med rotation of humerus

43. LatissimusDorsi if humerus is fixed

44. Covering th front and back of the trunk. • The pectoralis major and latissimusdorsi both adduct and medially rotate the Humerus.