| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Magnesium Technology 2023
|
| Presentation Title |
In Vitro Degradation Assessment of Magnesium Wire in Sternal-closure-like Conditions |
| Author(s) |
Adam Griebel, Natalie Romick |
| On-Site Speaker (Planned) |
Adam Griebel |
| Abstract Scope |
Though minimally-invasive surgery allows for treatment of a growing set of medical conditions, often open-heart surgery is still necessary. In open-heart surgery, the sternum is bisected to allow access to the heart. After surgery, the two halves of the sternum are mechanical fixed with stainless steel wires or in some cases titanium or stainless steel cables and plates. These devices are left behind indefinitely, and can cause patient discomfort or interfere with subsequent operations. An absorbable magnesium wire could allow for sufficient mechanical support while the sternum heals while avoiding the secondary complications of permanent materials. In this study, feasibility of Mg sternal wire was assessed using patent-pending LZ21 alloy wire and a simple sternal model mimic. Baseline mechanical and microstructural properties of 0.95 mm wire with and without a MgF2 coating were established and compared to wire corroded in a modified Hank’s fluid in a variety of loading conditions. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Biomaterials, Magnesium, Characterization |