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Issue 12, 2010
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Development of non-invasive Raman spectroscopy for in vivo evaluation of bone graft osseointegration in a rat model

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Abstract

The use of bone structural allografts for reconstruction following tumor resection is widespread, although successful incorporation and regeneration remain uncertain. There are few non-invasive methods to fully assess the progress of graft incorporation. Computed tomography and MRI provide information on the morphology of the graft/host interface. Limited information is also available from DXA and ultrasound. Only few techniques can provide information on the metabolic status of the graft, such as the mineral and matrix composition of the regenerated tissue that may provide early indications of graft success or failure. To address this challenge, we discuss here the implementation of Raman spectroscopy for in vivo assessment of allograft implantation in a rat model. An array of optical fibers was developed to allow excitation and collection of Raman spectra through the skin of rat at various positions around the rat's tibia. The system is calibrated against locally constructed phantoms that mimic the morphology, optics and spectroscopy of the rat. The system was evaluated by carrying out transcutaneous Raman measurement on rat. Bone mineral and matrix Raman bands are successfully recovered. This new technology provides a non-invasive method for in vivo monitoring of bone graft osseointegration.

Graphical abstract: Development of non-invasive Raman spectroscopy for in vivo evaluation of bone graft osseointegration in a rat model

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Publication details

The article was received on 23 Jul 2010, accepted on 09 Sep 2010 and first published on 06 Oct 2010


Article type: Paper
DOI: 10.1039/C0AN00566E
Citation: Analyst, 2010,135, 3142-3146
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    Development of non-invasive Raman spectroscopy for in vivo evaluation of bone graft osseointegration in a rat model

    P. I. Okagbare, F. W. L. Esmonde-White, S. A. Goldstein and M. D. Morris, Analyst, 2010, 135, 3142
    DOI: 10.1039/C0AN00566E

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