Table of Contents
ISRN Materials Science
Volume 2011, Article ID 571728, 8 pages
http://dx.doi.org/10.5402/2011/571728
Research Article

Rheological and Curing Behavior of a Newly Developed, Medium Viscous Acrylic Bone Cement

1Research & Development, aap Biomaterials, 64807 Dieburg, Germany
2R & D Biomaterials, Synthes GmbH, 4436 Oberdorf, Switzerland

Received 15 July 2011; Accepted 9 August 2011

Academic Editors: J. Provis and H. Yoshihara

Copyright © 2011 Stefan Deusser et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Percutaneous vertebroplasty, comprising an injection of polymethylmethacrylate (PMMA) bone cement into vertebral bodies, is a practical procedure for stabilization of osteoporotic compression fractures and other weakening lesions. Cement leakage is considered to be the major complication. The viscosity plays a key role in this context. At high viscosity, the risk of leakage is reduced; however, injection forces are highly increased, handling time is reduced. The purpose of the study was to investigate the rheological, handling and hardening behaviour of a newly developed medium viscous bone cement at different temperatures and by simulation of a temperature shift to body-temperature. The presented data give an impression on the injectability of the cement using different sized needles. It could be concluded, that the medium viscous cement shows an adequate working time for a broad temperature range and an acceptable hardening time of around 11 min after immersing the cement into a 3 7 C environment.