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Analysis of hydroxyapatite crystallites in subchondral bone by Fourier transform infrared spectroscopy and powder neutron diffraction methods

Abstract : CR_Chimie_22_HAL_Chappard_8Juin2015 1 1 Analysis of hydroxyapatite crystallites in subchondral bone by Fourier transform infrared spectroscopy and powder neutron diffraction methods Analyse des cristaux d'hydroxyapatite dans l'os sous chondral par spectroscopie infra-rouge à transformée de Fourier et diffraction neutronique sur poudres ABSTRACT English Fourier Transform Infrared (FTIR) spectroscopy and powder neutron diffraction (PND) were performed in human subchondral bone covered (C+) or not covered by cartilage (C-) to study hydroxyapatite. With FTIR, the carbonation rate was 30% with identical spectra in C+ and C-. With PND, the width of the diffraction peak (hkl=002) highlighted the anisotropy of nanocrystals (with needle and/or platelet-like shape) along the c-axis with average length of 50 nm and thickness of 10 nm and with no difference between C+ and C- .
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Christine Chappard, Gilles André, Michel Daudon, Dominique Bazin. Analysis of hydroxyapatite crystallites in subchondral bone by Fourier transform infrared spectroscopy and powder neutron diffraction methods. Comptes Rendus Chimie, Elsevier Masson, 2016, 19 (11-12), pp.1625-1630. ⟨10.1016/j.crci.2015.03.015⟩. ⟨hal-01284579⟩

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