|
Advanced
metal-ceramic joining techniques to optimise low-friction |
| Contract
number |
|
BRE3-C915 |
Proposal
number |
|
BE94-7119 |
| Start
date |
|
01-Nov-94 |
Duration |
|
3 years |
| RTD
programme |
|
Brite-EuRam |
| Coordinator |
|
Professor G Sala |
|
Organisation |
|
Sintea Compositi Srl |
| City |
|
Baranzate di Bollata (MI) |
| Country |
|
Italy |
Postcode |
|
I-20021 |
| Telephone |
|
39 02 38200497 |
Fax |
|
39 02 3566930 |
| Partner |
|
Morgan Matroc Ltd, UK |
| Partner |
|
RWTH Aachen University, DE |
| Partner |
|
Catholic University of
Sacro Cuore, I |
| Partner |
|
Lasindustria sa, P |
| Summary |
|
The use of ultra high
molecular weight polyethylene (UHMWPE) has |
|
given rise to UHMWPE wear,
causing polymeric debris release into |
|
surrounding tissues. Due
to the unsatisfactory performances of |
|
UHMWPE the possible use of
ceramics has been evaluated. Ceramics |
|
are brittle materials, and
the tests on femoral knee prostheses |
|
components made totally of
ceramics have shown its unreliability, |
|
owing to mechanical
problems. For this reason, the main objective of |
|
the proposed research
activity consists in the design, assessment and |
|
production of an
innovative composite knee prosthesis femoral |
|
component whose sliding
surface is made with ceramics and the |
|
structural part is made
with titanium alloys. The activity covers clinical |
|
requirement emission;
ceramic powders formulation; vacuum brazing |
|
development; in vitro
biocompatibility testing; prostheses prototypes |
|
definite design,
production, assembling and mechanical testing; in vivo |
| Achievements |
|
These include: 1)
assessment of clinical, functional, mechanical |
|
requirements for the
prostheses 2) completion of feasibility study and |
|
preliminary design
regarding the composite knee prosthesis femoral |
|
component 3) development
of ceramic materials which are good |
|
candidates for the
realisation of the prosthesis sliding surfaces 4) development of suitable techniques for
the joining between ceramic and titanium parts. |
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