Hi-Res X-Ray Tomography
with pco.dimax S4

With the help of the pco.dimax S4, the characteristics behind bone fractures are investigated. The goal is to understand the material as well as tissue level strain limits and their relation to failure sites.

The study of Turunen, M.J., Le Cann, S., Tudisco, E. et al. investigates the three-dimensional strain distribution by compressing bone samples in situ until failure. This process is imaged with high-resolution synchrotron radiation X-ray tomography. The acquired images are processed with digital volume correlation to determine the strains inside the trabeculae. At the local level, the trabecular structure, especially trabecular thickness (Figure is a modified reprint of Figure 2 in the publication), appears to be the most prominent factor in determining where the trabecular structure will break. The study also highlights that the strain levels are dependent on the used imaging voxel size and that high-resolution is needed in investigation of fracture behavior in individual trabeculae.

Citation: Turunen, M.J., Le Cann, S., Tudisco, E. et al. Sub-trabecular strain evolution in human trabecular bone. Sci Rep 10, 13788 (2020). https://doi.org/10.1038/s41598-020-69850-x

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