| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Biomaterials for 3D Printing
|
| Presentation Title |
Design of Metallic Lattices for Bone Implants by Additive Manufacturing |
| Author(s) |
Daniel Barba Cancho, Roger Reed, Enrique Alabort |
| On-Site Speaker (Planned) |
Daniel Barba Cancho |
| Abstract Scope |
A broad range of synthetic trabecular-like metallic lattices are 3D printed in Ti-6Al-4V by SLM. The aim is to propose new conceptual types of implant structures for superior bio-mechanical matching and osseo-integration: synthetic bone. Systematic evaluation is then carried out: (i) their accuracy is characterised using HR X-ray tomography, to assess deviations from the original geometrical design intent and (ii) the mechanical properties -- stiffness and strength - are experimentally measured and compared. Finally, this new knowledge is synthesised in a conceptual framework in the form of implant design maps, to define the processing conditions of bone tailored substitutes. The design criteria emphasise (a) the bone stiffness-matching, (b) preferred range of pore structure for bone in-growth, (c) manufacturability and (d) choice of inherent materials properties for durable implants. The power of this framework is demonstrated in the design of a prototype spine fusion device. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |