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Porous metal implant structures - a human bone copy?

Presentation held at IGSTC-Workshop "Strategies for improved bone replacement materials and orthopaedic implants: design - manufacturing - technologies"; 19.-21. February 2014, Dresden
: Hannemann, Christian

presentation urn:nbn:de:0011-n-2801389 (4.4 MByte PDF)
MD5 Fingerprint: 44eee2c15d4375ec448372ef8a9f004e
Created on: 6.3.2014

2014, 19 Folien
Workshop "Strategies for Improved Bone Replacement Materials and Orthopaedic Implants" <2014, Dresden>
Presentation, Electronic Publication
Fraunhofer IWU ()
titanium; metal foam; prostheses

In this study the development process of the medical engineering activities of the Department of Lightweight Design of the Fraunhofer IWU is explained and background information given. Coming from research and development for tooling machines the approaches are based upon a completely different way of thinking.
The similarity of the cellular structures - currently realized for fast moving slides of milling machines or heat exchangers - to these of cortical or cancellous bone are visible in Figure 1. As these foams are usually made of Aluminum alloys new ideas were needed resulting in extended efforts on Titanium foam. Many research institutions are already working on that topic as the human life span is extending further and further and in many cases bone substitute material is needed.
Instead of turning into a “fast follower on open porous structures” the idea of closed or semi-closed cellular Titanium was raised creating something closer to cortical bone cells. By mechanically opening of the outer skin the emerging cavities can give hold of bone cells leading to a form fit between bone and implant. The lecture visualizes the activities, problems and ideas on the way to a closed cellular Titanium structure.