Embedded piezoelectrics for sensing and energy harvesting in total knee replacement units

Brooke E. Wilson, R. Meneghini, Steven R. Anton

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

8 Scopus citations

Abstract

The knee replacement is the second most common orthopedic surgical intervention in the United States, but currently only 1 in 5 knee replacement patients are satisfied with their level of pain reduction one year after surgery. It is imperative to make the process of knee replacement surgery more objective by developing a data driven approach to ligamentous balance, which increases implant life. In this work, piezoelectric materials are considered for both sensing and energy harvesting applications in total knee replacement implants. This work aims to embed piezoelectric material in the polyethylene bearing of a knee replacement unit to act as self-powered sensors that will aid in the alignment and balance of the knee replacement by providing intraoperative feedback to the surgeon. Postoperatively, the piezoelectric sensors can monitor the structural health of the implant in order to perceive potential problems before they become bothersome to the patient. Specifically, this work will present on the use of finite element modeling coupled with uniaxial compression testing to prove that piezoelectric stacks can be utilized to harvest sufficient energy to power sensors needed for this application.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE
Volume9431
ISBN (Print)9781628415346
DOIs
StatePublished - 2015
EventActive and Passive Smart Structures and Integrated Systems 2015 - San Diego, United States
Duration: Mar 9 2015Mar 12 2015

Other

OtherActive and Passive Smart Structures and Integrated Systems 2015
CountryUnited States
CitySan Diego
Period3/9/153/12/15

Keywords

  • Compression testing
  • Energy harvesting
  • Finite element method
  • Piezoelectric sensing
  • Total knee replacement

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Embedded piezoelectrics for sensing and energy harvesting in total knee replacement units'. Together they form a unique fingerprint.

  • Cite this

    Wilson, B. E., Meneghini, R., & Anton, S. R. (2015). Embedded piezoelectrics for sensing and energy harvesting in total knee replacement units. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 9431). [94311E] SPIE. https://doi.org/10.1117/12.2087441