Numerical simulation of vibrational methods for the healing assessment of an internally fixated femur

Wing Kong Chiu, Wern Hann Ong, Matthias Russ, Tin Tran, Mark Fitzgerald

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

Abstract

Current bone healing monitoring techniques (X-ray, CT, manual manipulation) are subjective and qualitative. A quantitative monitoring technique for an internally fixated femur based on vibrational techniques is investigated. An intramedullary (IM) nail fixated femur will be at the focus of the investigation. The femur and fixation were modelled and their structural dynamics were solved using finite element analysis. This allowed visualisation of various mode shapes and identification of those most sensitive to healing. It was found that torsional modes were most sensitive to the stiffness change associated with healing. This data was then used as a guide for the placement of simulated accelerometer sensors and the simulated excitation point to predict the cross spectrum data that would be obtained during an experiment. Upon analysis of this data the torsional mode suggests that a relationship can be drawn between the natural frequency of the torsion mode and the state of health.

Original languageEnglish
Title of host publicationStructural Health Monitoring 2017
Subtitle of host publicationReal-Time Material State Awareness and Data-Driven Safety Assurance - Proceedings of the 11th International Workshop on Structural Health Monitoring, IWSHM 2017
EditorsFu-Kuo Chang, Fotis Kopsaftopoulos
PublisherDEStech Publications, Inc
Pages2442-2449
Number of pages8
Volume2
ISBN (Electronic)9781605953304
Publication statusPublished - 2017
EventInternational Workshop on Structural Health Monitoring (IWSHM) 2017 - Stanford, United States of America
Duration: 12 Sep 201714 Sep 2017
Conference number: 11th
https://web.stanford.edu/group/sacl/workshop/IWSHM2017/naccommodation2.html

Conference

ConferenceInternational Workshop on Structural Health Monitoring (IWSHM) 2017
Abbreviated titleIWSHM 2017
CountryUnited States of America
CityStanford
Period12/09/1714/09/17
Internet address

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