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Injectable Bone Cements for Vertebroplasty Studied in Sheep Vertebrae with Electron Microscopy

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Abstract:

Vertebral compression fractures were simulated by making a hole into sheep vertebrae and by injecting a stabilizing material. The injectable bio-ceramic Xeraspine™ was evaluated together with a commercially available PMMA (Vertebroplastic™) as the reference material. The Vertebrae were harvested after 7 days and prepared for microscopy. The samples were deposited with gold on the surface and thereafter subjected to SEM and EDX analysis. It was found that the Xeraspine-bone interface was composed of a mixture of elements. The Vertebroplastic implant was embedded in a carbon containing tissue, likely a soft tissue capsule. The Xeraspine sample was subjected to high resolution analysis in the TEM combined with EDX measurements. The TEM sample was prepared with a novel technique for preparation of the tissue-material interface (FIB). In the TEM analysis it was found that the interface region consists of ZrO2 together with a mixture possibly consisting of katoite and apatite formed during setting and/or originating from the boneapatite.

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Periodical:

Key Engineering Materials (Volumes 361-363)

Pages:

373-376

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.361-363.373

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Online since:

November 2007

Authors:

Tobias Jarmar, Thomas Uhlin, Urban Höglund, Peter Thomsen, Leif Hermansson, Hakan Engqvist

Keywords:

Energy Dispersive X-Ray (EDX), FIB, Injectable Bioceramic, Poly(Methyl Methacrylate) (PMMA), Scanning Electron Microscope (SEM), TEM

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© 2008 Trans Tech Publications Ltd. All Rights Reserved

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