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Movement at Joints

Movement at Joints. Types of Motions at Synovial Joints. Gliding flat bone surfaces moving across each other Flexion decrease in angle between articulating bones Extension Increase in angle between articulating bones Hyperextension Bending beyond 180 o degrees

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Movement at Joints

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  1. Movement at Joints

  2. Types of Motions at Synovial Joints • Gliding • flat bone surfaces moving across each other • Flexion • decrease in angle between articulating bones • Extension • Increase in angle between articulating bones • Hyperextension • Bending beyond 180o degrees • moving humerus backwards behind anatomical position

  3. Figure 7.4a B C A

  4. Figure 7.4b A C B

  5. Figure 7.4c A B

  6. A B C

  7. Figure 7.4e A C B

  8. Figure 7.4f A B

  9. Types of Motions at Synovial Joints • Abduction • movement of bone away from midline • Adduction • movement of bone toward midline • Circumduction • movement of distal end in a circle • Rotation • bone revolves around its own longitudinal axis

  10. Figure 7.5a A B

  11. Figure 7.5b B A

  12. Figure 7.5c B A

  13. Figure 7.6a A

  14. Figure 7.6b A

  15. Figure 7.7a A

  16. Figure 7.7b A B

  17. Special Movements at Synovial Joints • Elevation • lift upward • Depression • downward movement • Protraction • movement forward • Retraction • movement back to anatomical position

  18. Figure 7.8ab B A

  19. Figure 7.8cd A B

  20. Special Movements at Synovial Joints • Inversion • move of soles medially (inward) • Toward each other • Eversion • move soles laterally (outward) • Away from each other • Dorsiflexion • point (flex) toes upward • As if standing on your heels • Plantar flexion • bend (point) toes downward • Like a ballerinia

  21. Figure 7.8ef A B

  22. Figure 7.8g A B

  23. Special Movements at Synovial Joints • Supination • movement of forearm so palms face forward or upward • As if in anatomical position • Pronation • movement of forearm so palms face backward or downward

  24. Figure 7.8h A B

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