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THE ELBOW: Bones and Actions

Learn about the bones and terminology of the elbow, including proximal and distal, medial and lateral, and superior and inferior. Discover the actions of the elbow, such as flexion, extension, supination, and pronation. Understand the landmarks, joints, ligaments, and their respective actions.

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THE ELBOW: Bones and Actions

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  1. THE ELBOW:Bones and Actions

  2. TERMINOLOGY • Proximal and Distal • Medial and Lateral • Superior and Inferior • Ligament and Tendon • Condyle – large round projection • Epicondyle – a projection located above a condyle • Fossa- hollow, depression or flattened surface • Tubercle - small round projection • *Supination – external rotation of the radius • *Pronation – internal rotation of the radius

  3. BONES Medial View

  4. BONES • Scapula • Humerus • Radius • Ulna

  5. RADIUS

  6. ULNA Trochlear Notch

  7. HUMERUS

  8. SCAPULA Posterior Anterior Posterior

  9. Radius 1. Head 3. Radial tuberosity Styloid process Ulna 1. Olecranon process 2. Trochlear notch 3. Coronoid process Styloid process LANDMARKS

  10. 1. Head 3. Radial tuberosity

  11. 1. Olecranon process • 2. Trochlear notch • 3. Coronoid process

  12. HUMERUS

  13. LANDMARKS • Humerus • 1. Head • 3. Lesser tubercle • 4. Intertubercaluar groove • 5. Greater tubercle • 2. Lateral epicondyle • 3. Captitulum • 4. Trochlea • 5. Medial epicondyle • 7. Olecranon fosssa

  14. Coracoid Process Glenoid Cavity

  15. JOINTS • Humeroulnar the “elbow”; a hinge joint • Trochlea (humerus) • Trochlear notch (ulna) • Radioulnar movement of the forearm; a pivot joint • Head of radius • Ulna • Radiohumeral no true actions • Capitulum (humerus) • Head of the radius

  16. LIGAMENTS • Ulnar Collateral • Radial Collateral • Annular Ligament

  17. LIGAMENTS

  18. ACTIONS • Elbow or Humeroulnar Joint (Movement of the Ulna) • Flexion of the elbow • Extension of the elbow • Forearm or Radioulnar Joint (Movement of the Radius) • Supination of the forearm • Pronation of the forearm

  19. ACTIONS Extension

  20. What would be the location of a muscle that does elbow extension? What would be the location of a muscle that does elbow flexion? ACTIONS Posterior Anterior Humerus Fingers Ulna

  21. ACTIONS Pronation Supination

  22. ACTIONS

  23. Where is the radius after pronation? Where would a muscle need to be located in order to cause pronation? ACTIONS Lateral Medial Supination Pronation Palm Up Palm Down

  24. ACTIONS Lateral Medial • Where is the radius after supination? • Where would a muscle need to be located in order to cause supination? Supination Pronation Palm Up Palm Down

  25. What position is his left elbow in? What position his right elbow in? His right forearm? His left elbow? What position is his right forearm in? What is his name?

  26. What positions are her right elbow and forearm in? What positions are her left elbow and forearm in?

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