Tribology of flexible and sliding spinal implants: development of experimental and numerical models
(2016) In Journal of Biomedical Materials Research. Part B - Applied Biomaterials- Abstract
- New fusionless devices are being developed to get over the limits of actual spinal surgical treatment, based on arthrodesis. However, due to their recentness, no standards exist to test and validate those devices, especially concerning the wear. A new tribological first approach to the definition of an in vitro wear protocol to study wear of flexible and sliding spinal devices is presented in this article, and was applied to a new concept. A simplified synthetic spine portion (polyethylene) was developed to reproduce a simple supra-physiological spinal flexion (10° between two vertebrae). The device studied with this protocol was tested in wet environment until 1 million cycles (Mc). We obtained an encouraging estimated wear volume of same... (More)
- New fusionless devices are being developed to get over the limits of actual spinal surgical treatment, based on arthrodesis. However, due to their recentness, no standards exist to test and validate those devices, especially concerning the wear. A new tribological first approach to the definition of an in vitro wear protocol to study wear of flexible and sliding spinal devices is presented in this article, and was applied to a new concept. A simplified synthetic spine portion (polyethylene) was developed to reproduce a simple supra-physiological spinal flexion (10° between two vertebrae). The device studied with this protocol was tested in wet environment until 1 million cycles (Mc). We obtained an encouraging estimated wear volume of same order of magnitude compared to similar devices. An associated finite element (FE) numerical model has permitted to access contact information and study the effect of misalignment of one screw. First results could point out how to improve the design and suggest that a vertical misalignment of a screw (under or over-screwing) has more impact than a horizontal one. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/34c34d68-2db9-49af-aab4-d6935396d953
- author
- Le Cann, Sophie LU ; Chaves-Jacob, Julien ; Rossi, Jean-Marie ; Linares, Jean-Marc and Chabrand, Patrick
- publishing date
- 2016-11-22
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Biomedical Materials Research. Part B - Applied Biomaterials
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- scopus:85006051824
- pmid:27875027
- ISSN
- 1552-4981
- DOI
- 10.1002/jbm.b.33819
- language
- English
- LU publication?
- no
- id
- 34c34d68-2db9-49af-aab4-d6935396d953
- date added to LUP
- 2017-02-15 10:42:10
- date last changed
- 2022-04-24 21:38:55
@article{34c34d68-2db9-49af-aab4-d6935396d953,
abstract = {{New fusionless devices are being developed to get over the limits of actual spinal surgical treatment, based on arthrodesis. However, due to their recentness, no standards exist to test and validate those devices, especially concerning the wear. A new tribological first approach to the definition of an in vitro wear protocol to study wear of flexible and sliding spinal devices is presented in this article, and was applied to a new concept. A simplified synthetic spine portion (polyethylene) was developed to reproduce a simple supra-physiological spinal flexion (10° between two vertebrae). The device studied with this protocol was tested in wet environment until 1 million cycles (Mc). We obtained an encouraging estimated wear volume of same order of magnitude compared to similar devices. An associated finite element (FE) numerical model has permitted to access contact information and study the effect of misalignment of one screw. First results could point out how to improve the design and suggest that a vertical misalignment of a screw (under or over-screwing) has more impact than a horizontal one.}},
author = {{Le Cann, Sophie and Chaves-Jacob, Julien and Rossi, Jean-Marie and Linares, Jean-Marc and Chabrand, Patrick}},
issn = {{1552-4981}},
language = {{eng}},
month = {{11}},
publisher = {{John Wiley & Sons Inc.}},
series = {{Journal of Biomedical Materials Research. Part B - Applied Biomaterials}},
title = {{Tribology of flexible and sliding spinal implants: development of experimental and numerical models}},
url = {{http://dx.doi.org/10.1002/jbm.b.33819}},
doi = {{10.1002/jbm.b.33819}},
year = {{2016}},
}