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Characterization of Mineral Deposits on Plasma-Sprayed HA-Coated Ti-6Al-4V

Published online by Cambridge University Press:  15 February 2011

V. Benezra ,
M. Spector  and
L. W. Hobbs
V. Benezra
Affiliation:
Massachusetts Institute of Technology, Cambridge, MA 02139
M. Spector
Affiliation:
Brigham and Women's Hospital, Boston, MA 02115
L. W. Hobbs
Affiliation:
Massachusetts Institute of Technology, Cambridge, MA 02139
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Abstract

Plasma-sprayed hydroxyapatite (PSHA) coatings are often used as the attachment vehicle for the femoral component of a total hip prosthesis. The key to successful hip replacement is the attachment of the femoral stem to the surrounding bone.

Within hours of implantation of PSHA-coated Ti-6AI-4V rods in canine bone, bone mineral deposits on the HA coating. These deposits take the form of globular networks of fibrous crystallites. The crystallinity of these deposits was confirmed via high-resolution transmission electron microscopy (TEM) and electron diffraction. We have also characterized the composition of these deposits using x-ray energy-dispersive spectroscopy (XEDS) in the scanning TEM. Finally, we have studied the morphology of the fiber-like crystallites by stereography in the TEM.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 414: Symposium Z – Thin Films and Surfaces for Bioactivity and Biomedical Applications , 1995 , 165
Copyright
Copyright © Materials Research Society 1996

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References

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