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2. Ceramics for orthopedics
2.1 Manufacturing processes
The technical ceramics used in orthopedics are all powder-based. The powders, in atomized form, are pressed (isostatic or uniaxial pressing, depending on the manufacturer) to obtain green bodies. By uniaxial pressing, we obtain logs that are machined in green (or degreased) then sintered, and whose dimensions are taken over after sintering and before final polishing. This process is therefore suitable for all types of geometry. Isostatic pressing, on the other hand, produces ball preforms which are sintered, then lapped to ensure their sphericity, and into which the Morse taper is machined for attachment to the stem. This process is therefore reserved for spherical implants, such as hip replacement heads.
The dimensional specifications...
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Ceramics for orthopedics
Alumina prosthesis components
Bibliography
Websites
Numbers of ceramic prostheses implanted http://www.ceramtec.com/ceramic-materials/biolox/delta/ , accessed May 27, 2014.
Standards and norms
- Implants for surgery – Ceramic materials based on yttria-stabilized tetragonal zirconia (Y-TZP) - ISO 13356 - 2008
- Surgical implants – Partial and total hip joint prostheses – Part 2: Joint surfaces made of metallic, ceramic and plastic materials - ISO 7206-2 - 2011
- Surgical implants – Ceramic products – Part 1: High-purity alumina-based ceramic products - ISO 6474-1 - 2010
- Surgical implants –...
Patents
Reinforced porous coating. EP1924301 A1
Coating for dental applications. WO2010145822 A1
Directory
Manufacturers of ceramics for orthopedics (non-exhaustive list)
Kyocera (Bioceram AZ209, Al190 ) http://kyocera-md.com/technology/material/index.html
Ceramtec (Biolox® Delta, Biolox® Forte ) http://www.ceramtec.com/
...Statistical and economic data
Haute Autorité de Santé. Revision of generic descriptions for the list of reimbursable products and services "hip joint replacements" 2007 http://www.has-sante.fr
Haute Autorité de Santé. Revision of generic descriptions on the list of reimbursable products and services: knee joint implants. 2012
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