CC BY-NC-ND 4.0 · Rev Bras Ortop (Sao Paulo) 2020; 55(05): 597-604
DOI: 10.1055/s-0040-1708518
Artigo Original
Quadril

Comparative Biomechanical Study of Crosslinked Polyethylene Wear with 36-mm Ceramic Femoral Heads and with 32-mm Metal Femoral Heads

Article in several languages: português | English
1  Disciplina de Ortopedia e Traumatologia, Grupo de Quadril Adulto, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
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1  Disciplina de Ortopedia e Traumatologia, Grupo de Quadril Adulto, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
,
1  Disciplina de Ortopedia e Traumatologia, Grupo de Quadril Adulto, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
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2  Departamento de Engenharia Mecânica, Universidade Federal de Santa Catarina, Florianópolis, SC, Brasil
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3  Universidade Estadual de Campinas (Unicamp), Campinas, SP, Brasil
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1  Disciplina de Ortopedia e Traumatologia, Grupo de Quadril Adulto, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
› Author Affiliations

Abstract

Objective This study aims to compare the in vitro wear rate of crosslinked, high molecular weight polyethylene coupled to 36-mm diameter ceramic heads and 32-mm diameter metal heads.

Methods Ceramic-on-polyethylene (36 mm) and metal-on-polyethylene (32 mm) tribological pairs were submitted to biomechanical tests in a simulator to determine the wear rate after 15 × 106 cycles.

Results A statistically significant difference (p = 0.0005) was detected when comparing the wear rate of assemblies with metallic heads (average wear: 14.12 mg/MC) and ceramic heads (average wear: 7.46 mg/MC).

Conclusion The present study demonstrated the lower wear rate in prosthetic assemblies using 36-mm crosslinked ceramic-on-polyethylene tribological pairs compared to 32-mm crosslinked metal-on-polyethylene assemblies. This finding demonstrates the effectiveness of ceramic-on-polyethylene tribological pairs, even with large diameter heads.



Publication History

Received: 22 June 2019

Accepted: 12 November 2019

Publication Date:
06 April 2020 (online)

© 2020. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).

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