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A new in vitro spine test rig to track multiple vertebral motions under physiological conditions

  • Agnes Beckmann EMAIL logo , Christian Herren , Marion Mundt , Jan Siewe , Philipp Kobbe , Rolf Sobottke , Hans-Christoph Pape , Marcus Stoffel and Bernd Markert
Published/Copyright: April 27, 2017

Abstract

In vitro pure moment spine tests are commonly used to analyse surgical implants in cadaveric models. Most of the tests are performed at room temperature. However, some new dynamic instrumentation devices and soft tissues show temperature-dependent material properties. Therefore, the aim of this study is to develop a new test rig, which allows applying pure moments on lumbar spine specimens in a vapour-filled chamber at body temperature. As no direct sight is given in the vapour-filled closed chamber, a magnetic tracking (MT) system with implantable receivers was used. Four human cadaveric lumbar spines (L2–L5) were tested in a vapour atmosphere at body temperature with a native and rigid instrumented group. In conclusion, the experimental set-up allows vertebral motion tracking of multiple functional spinal units (FSUs) in a moisture environment at body temperature.

  1. Author Statement

  2. Research funding: This project is partially funded by START RWTH Research grants.

  3. Conflict of interest: Authors state no conflict of interest.

  4. Informed consent: Informed consent is not applicable.

  5. Ethical approval: The conducted research is not related to either human or animals use.

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Received: 2016-08-24
Accepted: 2017-02-15
Published Online: 2017-04-27
Published in Print: 2018-07-26

©2018 Walter de Gruyter GmbH, Berlin/Boston

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