Investigation of vibrational assessment on osseointegration process with a novel implant design

Investigation of vibrational assessment on osseointegration process with a novel implant design

Shouxun Lu, Benjamin Steven Vien, Matthias Russ, Mark Fitzgerald, Wing Kong Chiu

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Abstract. Osseointegrated prosthesis has been utilized as an alternative treatment for transfemoral amputation to replace the common prosthetic sock device, which has been complained by patients as unsatisfactory due to the severe infection and pain. Osseointegrated prosthesis demonstrated enormous advantages in improving mobility and quality of life for the amputee. However, the long rehabilitation period, which forces patients to stay in bed for up to 18 months, limits the application of the osseointegrated implant. Therefore, accurate and quantitative assessment method attracts research interest in recent years. This paper investigates the capability of a vibrational analysis technique using two unidirectional sensors on monitoring stages of the osseointegration process. This assessment method has been proven to be sensitive to the stiffness change at the femur-implant interface due to osseointegration. This paper mainly focuses on the further validation of this vibrational method and E-index on three lengths of the residual femur. The colormap of the cross-spectrum against the curing time demonstrates a clear step change in the magnitude. Moreover, the E-index for these three lengths of residual femur shares a similar trend, which dramatically increases after 300s and peaks above 0.8. The time when the gradient of the E-index reaches its maximum is coincident with the initial bonding time of the epoxy adhesive which is used to simulate the osseointegration process. The clear correlation between E-index to the curing time evidences the capability of this vibrational method in monitoring the osseointegration process and the potential of the E-index being a quantitative parameter to assess the stage of the osseointegration process.

Osseointegration Process, Vibrational Analysis, Structural Health Monitoring

Published online 3/30/2023, 10 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Shouxun Lu, Benjamin Steven Vien, Matthias Russ, Mark Fitzgerald, Wing Kong Chiu, Investigation of vibrational assessment on osseointegration process with a novel implant design, Materials Research Proceedings, Vol. 27, pp 173-182, 2023


The article was published as article 22 of the book Structural Health Monitoring

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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