1. Development of Device to Analyze the Motion of the Knee Joint
Biomedical Engineers:
Tera George
Kelly Braun
Advisor: Dr. John Dawson, Orthopaedics

2. Project Definition
Design, build and test a device which will hold the femur of a dog and allow unconstrained motion of the knee joint.
Using an imaging modality we will analyze the difference in movement between injured and non-injured knees.

3. The Anatomy of the Knee
The knee consists of four bones--patella, tibia, femur, and fibula.
Patellar Tendon
Four main ligaments

4. The Anatomy of the Knee

5. Previous Work Literary search completed
Dissected and Stored legs for testing
Sketched first and second draft of our design
Understand working relationship between knee joint and quadriceps muscle
Determined dimensions of our device

6. Current Work Forming our parts list Redesigning the base to our device
Ordering our parts
Still gathering dog’s legs for testing

7. Future Work Build our device once we receive our parts
Test the dog’s legs in the device
Gather more dog’s legs
Analyze the results and determine what the differences in movement are between injured and non-injured knees.

8. Constraints/Specifications
Able to hold onto quad muscle
High enough for tibia/fibula to swing without hitting the ground
Sturdiness
Allow for full six degrees of movement
Enough room on bones to place the pins for the imager to see them
Allow various sizes of dog’s legs

9. Dogs to People
Ideally, this analyzing system would like to be performed on a human’s knee, but since the dog’s knee is fairly similar to the human’s knee, we can study the movement of the dog’s knee and apply what we learn to a human knee

10. The End