In Vivo and in Vitro Aging of Orthopedic Aluminas

Abstract

The flexural strength, microstructure and relative Ca and Si concentration at the surface of two commercial orthopedic aluminas were studied before and after aging up to 52 weeks in simulated body fluids or in subcutaneous implantation in rodents. There was no significant reduction in flexural strength after aging, but there was evidence of Ca and Si dissolution from the external grain boundary surfaces, particularly for specimens aged in demineralized water. No change occurred in the Ca and Si concentrations within the specimen's bulk during either in vivo or in vitro aging.

Department(s)

Biological Sciences

Second Department

Materials Science and Engineering

Keywords and Phrases

Biomedical Engineering - Surgical Implants; Calcium And Alloys; Silicon And Alloys; Orthopedics; Alumina; Support, U.S. Gov't, P.H.S.

International Standard Serial Number (ISSN)

0021-9304

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1983 Wiley-Blackwell, All rights reserved.

Publication Date

01 May 1983

Link to Full Text

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