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Shoulder & Upper Arm Injuries

Explore the muscular anatomy of the shoulder and upper arm with detailed information on key muscles, origins, insertions, and actions. Enhance your knowledge of anatomical movements and terminology in this informative guide.

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Shoulder & Upper Arm Injuries

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  1. Shoulder & Upper Arm Injuries Muscular Anatomy

  2. Shoulder & Upper Arm - Anatomy • Introduction • On a piece of paper, make a list of as many muscular structures of the shoulder & upper arm as you can recall. • Get with a partner & share what you have on your lists.

  3. Shoulder & Upper Arm - Anatomy • Objectives • Students will be able to: • Identify and label relevant muscles of the shoulder & upper arm • Recognize & demonstrate anatomical movements of the shoulder

  4. Shoulder & Upper Arm – AnatomyTerminology Tendon Connect muscle to bone Range of Motion (ROM) A measurable degree of anatomical movement at a particular joint

  5. Shoulder & Upper Arm – AnatomyMuscular • Deltoid • Posterior • Origin • Scapular spine • Insertion • Deltoid tuberosity of humerus • Action • Extension, Horizontal abduction of the humerus

  6. Shoulder & Upper Arm – AnatomyMuscular • Deltoid • Middle • Origin • Acromion process • Insertion • Deltoid tuberosity of humerus • Action • Abduction of the humerus to 90 degrees

  7. Shoulder & Upper Arm – AnatomyMuscular • Deltoid • Anterior • Origin • Lateral clavicle • Insertion • Deltoid tuberosity of humerus • Action • Flexion, Horizontal adduction of the humerus

  8. Shoulder & Upper Arm – AnatomyMuscular • Latissimus Dorsi • Origin • Spinous process T6-S5, iliac crest • Insertion • Medial humerus • Action • Extension, adduction of humerus

  9. Shoulder & Upper Arm – AnatomyMuscular • Rotator Cuff • Supraspinatus • Infraspinatus • Teres Minor • Subscapularis

  10. Shoulder & Upper Arm – AnatomyMuscular • Supraspinatus • Origin • Supraspinous fossa of scapula • Insertion • Greater tubercle of humerus • Action • Abduction of the humerus • Stabilize head of humerus

  11. Shoulder & Upper Arm – AnatomyMuscular • Infraspinatus • Origin • Infraspinous fossa of scapula • Insertion • Greater tubercle of humerus • Action • External rotation of the humerus • Stabilize head of humerus

  12. Shoulder & Upper Arm – AnatomyMuscular • Teres Minor • Origin • Axillary border of scapula • Insertion • Greater tubercle of humerus • Action • External rotation of the humerus • Stabilize head of humerus

  13. Shoulder & Upper Arm – AnatomyMuscular • Subscapularis • Origin • Subscapular fossa of scapula • Insertion • Lesser tubercle of humerus • Action • Internal rotation of the humerus • Stabilize head of humerus

  14. Shoulder & Upper Arm – AnatomyMuscular • Pectoralis Major • Origin • Medial clavicle, sternum, costal cartilage (1-6) • Insertion • Lateral Humerus • Action • Flexion, adduction of humerus

  15. Shoulder & Upper Arm – AnatomyMuscular • Pectoralis Minor • Origin • Anterior ribs 3-5 • Insertion • Coracoid process • Action • Protraction of scapula

  16. Shoulder & Upper Arm – AnatomyMuscular • Biceps Brachii • Origin • Short Head-coracoid process • Long Head-supraglenoid tubercle of scapula • Insertion • Radial tuberosity • Action • Shoulder Flexion • Elbow flexion

  17. Shoulder & Upper Arm – AnatomyMuscular • Triceps Brachii • Origin • Long Head-infraglenoid tubercle of scapula • Lateral Head-posterior humerus • Medial Head- posterior humerus • Insertion • Olecranon process of ulna • Action • Shoulder Extension • Elbow extension

  18. Shoulder & Upper Arm – AnatomyMuscles – Review – White Boards • Get white board & marker • Return to seat • View Review Power Point • Identify structure & write answer on white board • Show answer when prompted

  19. Shoulder & Upper Arm – AnatomyMuscles – Anatomical Movements • What causes muscles to move? • Muscle contraction

  20. Name the anatomical movements of the shoulder? Flexion Extension Abduction Adduction Internal Rotation External Rotation Circumduction Shoulder & Upper Arm – AnatomyMuscles – Anatomical Movements

  21. Shoulder & Upper Arm – AnatomyMuscles - Anatomical Movements • Flexion • To bend, decrease the angle of a joint

  22. Shoulder & Upper Arm – AnatomyMuscles - Anatomical Movements • Extension • To straighten, increase the angle of a joint (restore to anatomical position)

  23. Shoulder & Upper Arm – AnatomyMuscles - Anatomical Movements • Abduction • Away from the mid-line

  24. Shoulder & Upper Arm – AnatomyMuscles - Anatomical Movements • Adduction • Toward the mid-line

  25. Shoulder & Upper Arm – AnatomyMuscles - Anatomical Movements • Internal Rotation • Movement around a central axis toward the median plane

  26. Shoulder & Upper Arm – AnatomyMuscles - Anatomical Movements • External Rotation • Movement around a central axis away from the median plane

  27. Shoulder & Upper Arm – AnatomyMuscles - Anatomical Movements • Circumduction • Movement in a circular pattern that outlines a cone

  28. Shoulder & Upper Arm – AnatomyMuscles – Anatomical Movements • Get with a partner & take turns asking each other to demonstrate anatomical movements of the shoulder Palpate the origin & insertion of each muscle to feel the muscle action

  29. Shoulder & Upper Arm – AnatomyMuscles – Anatomical Movements • “Because I said so!” • Stand up • Establish some space around you • Demonstrate the anatomical movement called out

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