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The Shoulder Girdle Anatomy and Kinesiology 420:024.

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Presentation on theme: "The Shoulder Girdle Anatomy and Kinesiology 420:024."— Presentation transcript:

1 The Shoulder Girdle Anatomy and Kinesiology 420:024

2 Objectives Bones, bony landmarks and joints Muscles Movements

3 The Shoulder Girdle The scapula and clavicle Two joints Functions Dynamic stability Increased ROM

4 Bones From Seeley RR, Stephens TD, Tate P; anatomy and physiology, ed 7, New York, 2006, McGraw-Hill

5 Bones From Seeley RR, Stephens TD, Tate P; anatomy and physiology, ed 7, New York, 2006, McGraw-Hill

6 Joints Shoulder girdle (scapulothoracic) Scapula moves on the rib cage Joint motion occurs at sternoclavicular joint & to a lesser amount at the acromioclavicular joint

7 Joints Sternoclavicular (SC) (Multiaxial) arthrodial/gliding classification Movements Anteriorly with protraction Posteriorly with retraction Superiorly with elevation Inferiorly with depression

8 Joints Acromioclavicular (AC) Arthrodial/gliding classification Movements Some gliding & rotational motion accompanying other shoulder girdle & shoulder joint motions Often injured

9 Objectives Bones, bony landmarks and joints Muscles Movements

10 Muscles Five muscles primarily involved in shoulder girdle movements All originate on axial skeleton & insert on scapula and/or clavicle Do not attach to humerus & do not cause shoulder joint actions Functions: Stability ROM of shoulder joint

11 Shoulder Girdle Muscles Five muscles primarily involved in shoulder girdle movements Trapezius - upper, middle, lower Rhomboid - deep Levator scapula Serratus anterior Pectoralis minor - deep

12 Trapezius

13 Levator Scapulae

14 Rhomboids

15 Serratus Anterior

16 Pectoralis Minor

17 Subclavius

18 Objectives Bones, bony landmarks and joints Muscles Movements

19 Focus on specific bony landmarks inferior angle glenoid fossa acromion process Shoulder girdle movements = scapula movements

20 Movements Elevation Depression

21 Movements Abduction (protraction) Adduction (retraction)

22 Movements Upward rotation Downward rotation

23 Shoulder Girdle Movements Elevation Depression Abduction Adduction UpwardRotation DownwardRotation

24 Movements Anterior tilt (upward tilt) Posterior tilt (downward tilt)

25 Movements Lateral tilt (outward tilt) Medial tilt (return from lateral tilt, inward tilt)

26 Movements Shoulder joint & shoulder girdle work together Shoulder girdle movement independent Upward/downward rotation? Shoulder girdle muscles Stabilize scapula Enhance ROM of shoulder joint

27

28 ELEVATION Proximal attachment: Above or below scapula/clavicle? How many muscles fit this criteria?

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30 DEPRESSION Proximal attachment: Above or below scapula/clavicle? How many muscles fit this criteria?

31

32 RETRACTION Proximal attachment: In front (ribs) or behind (spine)? How many muscles fit this criteria?

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34 PROTRACTION Proximal attachment: In front (ribs) or behind (spine)? How many muscles fit this criteria?

35

36 UPWARD ROTATION Upward or downward torque? How many muscles fit this criteria?

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38 DOWNWARD ROTATION Upward or downward torque? How many muscles fit this criteria?


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