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Materiale Plastice
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https://doi.org/10.37358/Mat.Plast.1964

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Materiale Plastice (Mater. Plast.), Year 2021, Volume 58, Issue 4, 187-196

https://doi.org/10.37358/MP.21.4.5544

Rodica Marinescu, Dan Laptoiu, Izabela-Cristina Stancu, Cristina Busuioc

Late Failure of a Polyethylene Unicompartmental Knee Insert -Retrieval Analysis Protocol and Results


Abstract:
This study reports the investigation of a degraded polyethylene insert retrieved after the catastrophic failure of a mobile bearing knee implant, occurred after a traumatic event and leading to a late revision. Understanding wear mechanisms of polyethylene components is important to improve the implants for joint replacement. This model of unicompartmental arthroplasty, due to its mobile, congruent insert and design, has the potential to attain low rates of wear, leading to an improved survival of the prosthesis over fixed-bearing knee implants. During the surgical technique, however, it is critical to avoid any source of impingement or incongruent articulation, as this are associated with increased rates of polyethylene wear and may contribute to the early necessity for revision surgery. The investigated insert presented a macroscopic fragmentation, surface and bulk defects and debris. Characterization of the retrieved polyethylene implant fragments was performed by macroscopic examination, by scanning electron microscopy and Fourier transform infrared spectroscopy. Due to a systematic retrieval analysis according to current standards, we can question that, in our case, third body wear is rarely pure bone or pure cement debris related but a combination of the two mentioned. The combination enhanced contribution of polyethylene debris in severe wear initiation and progression. Complete examination of the explants exhibiting breakage or severe wear may help in understanding pathogenic ways of failure in unicompartmental knee.


Keywords:
mobile bearing insert; unicompartmental knee; failure analysis; retrieval analysis; wear

Issue: 2021 Volume 58, Issue 4
Pages: 187-196
Publication date: 2022/1/4
https://doi.org/10.37358/MP.21.4.5544
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Creative Commons License
This article is published under the Creative Commons Attribution 4.0 International License
Citation Styles
Cite this article as:
MARINESCU, R., LAPTOIU, D., STANCU, I., BUSUIOC, C., Late Failure of a Polyethylene Unicompartmental Knee Insert -Retrieval Analysis Protocol and Results, Mater. Plast., 58(4), 2021, 187-196. https://doi.org/10.37358/MP.21.4.5544

Vancouver
Marinescu R, Laptoiu D, Stancu I, Busuioc C. Late Failure of a Polyethylene Unicompartmental Knee Insert -Retrieval Analysis Protocol and Results. Mater. Plast.[internet]. 2021 Dec;58(4):187-196. Available from: https://doi.org/10.37358/MP.21.4.5544


APA 6th edition
Marinescu, R., Laptoiu, D., Stancu, I. & Busuioc, C. (2021). Late Failure of a Polyethylene Unicompartmental Knee Insert -Retrieval Analysis Protocol and Results. Materiale Plastice, 58(4), 187-196. https://doi.org/10.37358/MP.21.4.5544


Harvard
Marinescu, R., Laptoiu, D., Stancu, I., Busuioc, C. (2021). 'Late Failure of a Polyethylene Unicompartmental Knee Insert -Retrieval Analysis Protocol and Results', Materiale Plastice, 58(4), pp. 187-196. https://doi.org/10.37358/MP.21.4.5544


IEEE
R. Marinescu, D. Laptoiu, I. Stancu, C. Busuioc, "Late Failure of a Polyethylene Unicompartmental Knee Insert -Retrieval Analysis Protocol and Results". Materiale Plastice, vol. 58, no. 4, pp. 187-196, 2021. [online]. https://doi.org/10.37358/MP.21.4.5544


Text
Rodica Marinescu, Dan Laptoiu, Izabela-Cristina Stancu, Cristina Busuioc,
Late Failure of a Polyethylene Unicompartmental Knee Insert -Retrieval Analysis Protocol and Results,
Materiale Plastice,
Volume 58, Issue 4,
2021,
Pages 187-196,
ISSN 2668-8220,
https://doi.org/10.37358/MP.21.4.5544.
(https://revmaterialeplastice.ro/Articles.asp?ID=5544)
Keywords: mobile bearing insert; unicompartmental knee; failure analysis; retrieval analysis; wear


RIS
TY - JOUR
T1 - Late Failure of a Polyethylene Unicompartmental Knee Insert -Retrieval Analysis Protocol and Results
A1 - Marinescu, Rodica
A2 - Laptoiu, Dan
A3 - Stancu, Izabela-Cristina
A4 - Busuioc, Cristina
JF - Materiale Plastice
JO - Mater. Plast.
PB - Materiale Plastice SRL
SN - 2668-8220
Y1 - 2021
VL - 58
IS - 4
SP - 187
EP - 196
UR - https://doi.org/10.37358/MP.21.4.5544
KW - mobile bearing insert
KW - unicompartmental knee
KW - failure analysis
KW - retrieval analysis
KW - wear
ER -


BibTex
@article{MatPlast2021P187,
author = {Marinescu Rodica and Laptoiu Dan and Stancu Izabela-Cristina and Busuioc Cristina},
title = {Late Failure of a Polyethylene Unicompartmental Knee Insert -Retrieval Analysis Protocol and Results},
journal = {Materiale Plastice},
volume = {58},
number = {4},
pages = {187-196},
year = {2021},
issn = {2668-8220},
doi = {https://doi.org/10.37358/MP.21.4.5544},
url = {https://revmaterialeplastice.ro/Articles.asp?ID=5544}
}


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