Digital Volume Correlation in Bone Mechanics

Digital Volume Correlation (DVC) has emerged as a pivotal tool for three-dimensional characterisation of bone deformation under mechanical load. By tracking the movement of greyscale patterns between successive tomograms acquired via high-resolution micro-computed tomography, DVC quantifies full-field displacements and computes local strain distributions within both trabecular and cortical compartments. Integration with synchrotron-radiation micro-CT has further enhanced temporal resolution and reduced voxel size to probe sub-trabecular strain evolution under dynamic loading. Methodological advances in global and local correlation schemes have improved both spatial resolution and precision, supporting validation of finite-element models and informing the design of orthopaedic implants. Ultimately, DVC offers unparalleled insight into bone health, fracture risk and the efficacy of therapeutic interventions across scales from the tissue to the organ.

Research from Nature Portfolio

Recent studies have applied high-resolution synchrotron-radiation tomography combined with DVC to examine sub-trabecular strain evolution in human cancellous bone. These investigations reveal that peak strain magnitudes at the microscale exceed earlier estimates based on whole-trabecular analysis, highlighting the influence of voxel size on strain detection and the critical role of local architectural features in crack initiation. Findings demonstrate that thinner trabeculae are predisposed to damage and that high-fidelity imaging is essential to capture detailed crack paths and failure thresholds within the native bone matrix. This work has established foundational benchmarks for tissue-level strain limits and informs both the calibration of computational models and the development of targeted treatments for reducing fracture risk.

Research from all publishers

Investigations into peri-implant bone mechanics have utilised synchrotron-radiation micro-CT with DVC to compare strain distributions around titanium, polyetheretherketone and biodegradable implants in rodent models. Results indicate that material-dependent differences in callus formation and trabecular organisation drive distinct mechanical stabilisation profiles, informing biomaterial selection. Concurrently, in situ nano-indentation studies on cortical bone have employed DVC to map anisotropic crack propagation and quantify three-dimensional deformation ahead of indenter tips, revealing the alignment-dependent toughening mechanisms of osteonal structures. Complementary work has assessed the measurement uncertainties of global DVC algorithms in vertebral segments with metastatic lesions, demonstrating that heterogeneous trabecular microarchitecture exerts only a modest effect on strain precision. Together, these efforts expand the applicability of DVC to implant evaluation, fracture mechanics and pathological bone assessment.

Digital Volume Correlation in Bone Mechanics publication trend

The graph below shows the total number of articles in digital volume correlation in bone mechanics across all publications each year (not limited to Nature Index journals).

Technical terms

Digital Volume Correlation (DVC): A computational technique that registers greyscale patterns in three-dimensional image stacks to quantify displacement and strain fields within a volume.

Micro-computed tomography (micro-CT): A non-destructive imaging method that produces high-resolution tomographic reconstructions of internal bone microstructure.

Synchrotron radiation micro-CT: An advanced form of micro-CT employing synchrotron X-ray sources for enhanced spatial and temporal resolution.

Trabecular bone: The porous, lattice-like inner network of bone tissue that contributes to energy absorption and metabolic function.

Cortical bone: The dense outer shell of bone that provides rigidity and resistance to bending and torsion.

Strain field: The spatial distribution of mechanical deformation expressed as relative displacement gradients within the material under load.

References

1. Sub-trabecular strain evolution in human trabecular bone. Scientific Reports (2020).
2. On the material dependency of peri-implant morphology and stability in healing bone. Bioactive Materials (2023).
3. In situ synchrotron radiation µCT indentation of cortical bone: Anisotropic crack propagation, local deformation, and fracture. Acta Biomaterialia (2023).
4. Bone metastases do not affect the measurement uncertainties of a global digital volume correlation algorithm. Frontiers in Bioengineering and Biotechnology (2023).
5. Validation of finite element models of the mouse tibia using digital volume correlation. Journal of the Mechanical Behavior of Biomedical Materials (2018).
6. Precision of Digital Volume Correlation Approaches for Strain Analysis in Bone Imaged with Micro-Computed Tomography at Different Dimensional Levels. Frontiers in Materials (2017).