Research into the molecular and cellular pathways focusing on bone fragility and fracture-healing has led to new potential treatments to aid in fracture-healing. This research has focused on physical as well as biological modes of treatment. As new products and methods are derived, it is essential to develop effective and sensitive noninvasive means by which early changes in the fracture repair process can be detected. Specialized noninvasive and/or nondestructive techniques can provide structural information about local and systemic skeletal health, the propensity to fracture, and the pathophysiology of bone fragility. The methods available to quantitatively assess macrostructure include computed tomography and, particularly, volumetric quantitative computed tomography. Methods for assessing microstructure of trabecular bone include high-resolution computed tomography, microquantitative computed tomography, high-resolution magnetic resonance imaging, and micromagnetic resonance imaging. These new techniques help to illustrate the process of fracture-healing by defining the skeletal response to innovative therapies and assessing biomechanical relationships. This review presents perspectives on the advanced imaging modalities that are currently available and on recent developments that may improve the detection and understanding of bone fragility and fracture-healing.
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