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25 April 2023 Guided ultrasonic wave monitoring techniques to assess bone implant loosening
Enze Chen, Krishnan Balasubramaniam, Prabhu Rajagopal, Paul Fromme
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Proceedings Volume 12488, Health Monitoring of Structural and Biological Systems XVII; 1248825 (2023) https://doi.org/10.1117/12.2659366
Event: SPIE Smart Structures + Nondestructive Evaluation, 2023, Long Beach, California, United States
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Abstract
Total ankle replacement (TAR) is the main clinical treatment for end-stage ankle arthritis, replacing the ankle joint with a metallic implant. Component loosening, fracture, and wear are the main reasons for implant failure, requiring revision surgery. A non-invasive guided wave monitoring technique is being developed to ultimately evaluate in-vivo implant device integrity and bone-implant interface conditions (osseointegration). Finite Element (FE) simulations were performed to investigate the feasibility and sensitivity of ultrasonic monitoring of the interface conditions, assessing suitable guide d wave modes and excitation frequencies. A simplified implant geometry was developed for FE modelling in Abaqus/Explicit. Selected guided wave modes (higher-order longitudinal modes sensitive to bone/implant interface changes) were excited at the distal end of the metallic implant component for detection of variations of bone-implant contact conditions. Simulation results showed the feasibility for guided ultrasonic waves to monitor bone implant osseointegration. Guided wave signal amplitude and changes of arrival time of pulses propagating along the metallic implant can indicate the presence of improved osseointegration. The potential for the integration of the bone implant monitoring sensors and other biosensors into secure, blockchain-based, remote patient data management systems will be further investigated.
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Enze Chen, Krishnan Balasubramaniam, Prabhu Rajagopal, and Paul Fromme "Guided ultrasonic wave monitoring techniques to assess bone implant loosening", Proc. SPIE 12488, Health Monitoring of Structural and Biological Systems XVII, 1248825 (25 April 2023); https://doi.org/10.1117/12.2659366
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KEYWORDS
Bone
Waveguides
Wave propagation
Simulations
Ultrasonics
Biosensors
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