1. Introduction to Biomechanics
IE497
Spring 2009
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. An Elbow Joint

8. Use a free-body diagram

9. 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

10. Our diagram The equations for static equilibrium are: S M = 0 S Fx = 0
S Fy = 0

11. Our problem

12. Hip Biomechanics