Study of the Trabecular Bone through Infrared Spectroscopy
Abstract
A study of bone samples from a healthy subject obtained by iliac crest biopsies analyzed with FT-IR is presented. From the analysis of the spectral bands corresponding to the ν1 and ν3 phosphate vibration modes and the carbonate ν2 are determined the cristallinity/maturity index, the carbonate substitutions (type A and B) ratio on the HA net and the relative amount of carbonate in the sample. The largest value of the cristallinity/maturity index is found in the middle of the trabecula, place where only appears the carbonate absorption maximum corresponding to a type A substitution, and where the largest relative amount of carbonate is obtained as well. The results show the mineral maturity vanishes from the middle of the trabecula into its edges.
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