| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
3D Printing of Biomaterials and Devices
|
| Presentation Title |
In Vivo and In Vitro Bio-corrosion of Zirconia-toughened Alumina (ZTA)-Ti6Al4V-Hydroxyapatite (HA) Load-bearing Articulation Implant Surfaces |
| Author(s) |
Jose D. Avila, Stefano Guariento, Sushant R. Ciliveri, Susmita Bose, Amit Bandyopadhyay |
| On-Site Speaker (Planned) |
Jose D. Avila |
| Abstract Scope |
CoCr alloy load-bearing implants used in total hip arthroplasty (THA) have been reported to fail prematurely due to adverse local tissue response (ALTR) and taper corrosion. In the present study, alternative Ti6Al4V-ZTA-HA metal matrix composites were investigated. The composites were fabricated via 3D Printing. A rabbit distal femur 6-week in vivo study for implantation and histological characterization was conducted. An in vitro 16-week applied potential polarization study of the Ti6Al4V and Ti6Al4V-ZTA-HA-based composites was conducted to investigate the coupled taper-corrosion behavior. The Ti6Al4V-ZTA-HA composites displayed increased hardness, decreased wear volume, increased surface passivation during tribological testing, and faster re-passivation post-tribological testing, validated by increased contact resistance and more cathodic open circuit potential. The presentation will discuss in vitro and in vivo biocorrosion of Ti6Al4V-ZTA-HA samples. |