Alumina prosthesis components
Ceramic biomaterials for orthopaedic prostheses

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MED7100 V1 Article

Alumina prosthesis components


Ceramic biomaterials for orthopaedic prostheses

Authors : Laurent GREMILLARD, Jérôme CHEVALIER

Publication date: January 10, 2016 | Lire en français

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3. Alumina prosthesis components

Introduced in 1965, alumina has the triple advantage of being readily available, having good mechanical properties and being biocompatible.

The first developments made on this basis consist in strengthening the material by optimizing it (optimization of purity, density, grain size... to eliminate defects).

3.1 Introduction to alumina

Alumina is one of the most widely used technical ceramics, thanks to a combination of properties that include hardness (up to 20 GPa), stiffness (Young's modulus up to 400 GPa), breaking strength (breaking stress up to 650 MPa), chemical inertia, refractoriness and lightness (density around 4).

It can exist in various crystallographic phases, but the only phase stable at the temperatures...

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