AI Article Synopsis
- Ultrasonic guided waves in cortical bone can provide insights into bone structure and health, specifically in human long bones like the tibia.
- The complexity of tibial material behavior and geometric features poses challenges in modeling wave propagation, which has been addressed for the first time by analyzing the irregular hollow tibial cross-section.
- Semi-analytical and finite element analyses reveal that guided waves generated by contact transducers exhibit low phase velocity non-dispersive modes, making them promising for diagnosing fracture healing.
Article Abstract
The propagation of ultrasonic guided waves in cortical bone has potential to inform medical caregivers about the condition of the bone structure. However, as waveguides, human long bones such as the tibia are complex in terms of their material behavior and their geometric features. They exhibit anisotropic elasticity and internal damping. For the first time, wave propagation is modelled in the irregular hollow tibial cross-section, which varies along its long axis. Semi-analytical, frequency domain, and time domain finite element analyses providing complimentary information about long-range wave propagation characteristics in such a waveguide are applied to the mid-diaphyseal region of a human tibia. Simulating the guided waves generated by a contact transducer, the signals received in axial transmission indicate the consistent presence of low phase velocity non-dispersive propagating modes. The guided waves capable of traveling long distances have strong potential for diagnosis of fracture healing.
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| http://dx.doi.org/10.1016/j.ultras.2021.106407 | DOI Listing |
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