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During ACL reconstructive surgery, titanium or partially degradable interference screws are used to secure the graft within the femur and tibia. These screws or parts of these screws will remain in the patient’s knee for the rest of his or her life and can cause problems. Another problem with the current screw is that it does not promote tissue growth. Therefore, it is our client’s desire to develop an interference screw for ACL reconstruction that will promote and foster the growth of surrounding bone tissue while slowly degrading to completion, as well as limit any potential problems a patient may incur while these screws in his or her body.
From L to R: Dana (Communicator), Cole (Leader), Katherine (Outreach Coordinator), Aaron (BWIG), and Joe (BSAC).
We are currently waiting for the rapid prototype to be completed. We’ve successfully tested the screw with simple axial and radial compression as well as insertion torque. We’ve finished the paper and are preparing for the presentation.
| Week | Reporting Period Beginning | Activities |
|---|---|---|
| 1 | January 20 | Came up with a list of goals for the semester, and our plan to accomplish them |
| 2 | January 27 | Worked on CAD drawing of the screw, bought some pieces for the new pluge, got the OK for our K12 outreach |
| 3 | February 3 | Ordered poly-Capro Lactone, checked out the polymer engineering center, and continued to work on the CAD model of our screw |
| 4 | February 10 | Completed and submitted the CAD Drawing for Rapid Protyping, purchased materials for new plug |
| 5 | February 17 | Contacted Prof. Osswald about polymer engineering lab, worked on slides for presentation |
| 6 | February 24 | Met with grad. student from the polymer engineering lab. He can help us make dogbones for torsions testing. Found another guy to help us with rapid protoyping. |
| 7 | March 3 | Worked on notebooks, discussed how we did on the midsemester presentation |
| 8 | March 10 | SPRING BREAK!!! |
| 9 | March 17 | Made surgival size plug for alginate pockets; setup outreach with Mr. Davis |
| 10 | March 24 | Tapped a new mold for the surgical size screw, machined triangular drivers, made another alginate plug |
| 11 | March 31 | Machine a new square and triangular shaft out of steel, refined alginate pocket plug |
| 12 | April 7 | Melted PCL beads in mold and used a hexagonal driver, worked on outreach presentation, continued work on new drive shapes |
| 13 | April 14 | Continued to work on the molding process, worked on outreach presentation |
| 14 | April 21 | Performed outreach for Sheboygan Falls, Performed mechanical tests, composed final paper |
| 15 | April 28 |
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Midsemester Presentation (Feb 24 2006, 4906 kb) |
 |
Product Design Specifications V3.2 (Mar 3 2006, 98 kb) |
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Final Poster Presentation (May 4 2006, 1630 kb) |
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Final Paper (May 4 2006, 269 kb) |
