| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Biomaterials for Biomedical Implants
|
| Presentation Title |
Reducing Stress Shielding in Hip Implants Using 3D Printed Superelastic Titanium Alloy |
| Author(s) |
Peter Ibrahim, Piyapat Jameekornkul, Ajit Panesar, Moataz M. Attallah |
| On-Site Speaker (Planned) |
Peter Ibrahim |
| Abstract Scope |
β-Titanium alloys, in particular the superelastic low modulus TiNbTaZr alloys, are considered as a promising candidate for medical implants due to its low elastic modulus and high strength. 3D printing, using Laser Powder Bed Fusion was used to build customised implants to reduce bone stress shielding. In this study, finite element modelling (FEM) was used to simulate stress shielding in the femur bone, through comparing TNTZ versus standard medical implants alloys, alongside solid and lattice-structured implants. The stress shielding in the femur cortical bone were reduced when using the TNTZ alloy for the hip implant compared with Ti-6Al-4V. By introducing Triply Periodic Minimal Surface structures in the implant stem, the average stress shielding dropped by ~5%. Further optimisation of each cell to match the corresponding elastic modulus of the bone could bring average stress shielding to negative values around the bones, which stimulates faster post-operative bone growth. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Biomaterials, Titanium |