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Introduction to Biomechanics

Introduction to Biomechanics. ISE789 Spring 2010 Dr. R. A. Wysk. What is Biomechanics?. The process of describing, analyzing and assessing human motion Some focus on handicapped Gate of motion Joints and joint replacement Stable and sustainable. Examples.

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Introduction to Biomechanics

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  1. Introduction to Biomechanics ISE789 Spring 2010 Dr. R. A. Wysk

  2. What is Biomechanics? • The process of describing, analyzing and assessing human motion • Some focus on handicapped • Gate of motion • Joints and joint replacement • Stable and sustainable

  3. Examples

  4. Flow of joint position from a camera

  5. The Arm

  6. Joint Replacement Design

  7. Arm and Humerus

  8. Design considerations • Human body is a very complex system • Bones are very strong mechanical members • Self healing • Can be very slippery

  9. Hip Implants • What makes they of value? • Pain free • Ambulation • Short recovery

  10. Implants • What are the down sides? • Cost • Infection • Repair

  11. Examples

  12. More examples

  13. More examples

  14. More examples

  15. More examples

  16. More examples

  17. So what can we do? • Systematic approach • New materials • Better design • Better surgical tools • Efficiency • Variance reduction

  18. An Elbow Joint

  19. Use a free-body diagram

  20. Free-body diagrams • Shows all forces and kinematic points • Draw a representative free-body diagram • Equilibrium mapping • Write the equations of static equilibrium • Solve/analyze the system

  21. Our diagram Theequations for static equilibrium are: SM = 0 SFx = 0 SFy = 0

  22. Our problem

  23. Hip Biomechanics

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