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Physical and mechanical characterization of a porous cement for metaphyseal bone repair
OBJECTIVE: Macroporous cement with mechanical properties similar to cancellous bone may improve the treatment of large bone defects in relation to solid acrylic cement. The aim of this study was to compare physical and mechanical characteristics of a polymethyl methacrylate (PMMA) based porous cemen...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Sociedade Brasileira de Ortopedia e Traumatologia
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4544528/ https://www.ncbi.nlm.nih.gov/pubmed/26327801 http://dx.doi.org/10.1590/1413-785220152304145751 |
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author | Cimatti, Bruno Engel, Edgard Eduard Nogueira-Barbosa, Marcello Henrique Frighetto, Paulo Donato Volpon, José Batista |
author_facet | Cimatti, Bruno Engel, Edgard Eduard Nogueira-Barbosa, Marcello Henrique Frighetto, Paulo Donato Volpon, José Batista |
author_sort | Cimatti, Bruno |
collection | PubMed |
description | OBJECTIVE: Macroporous cement with mechanical properties similar to cancellous bone may improve the treatment of large bone defects in relation to solid acrylic cement. The aim of this study was to compare physical and mechanical characteristics of a polymethyl methacrylate (PMMA) based porous cement with cancellous bone. METHODS: Compressive strength and pore size, interconnectivity, and distribution of cylindrical porous PMMA cement samples containing 10% (G1), 20% (G2) or 30% (G3) effervescent components were analyzed. Results were compared to bovine cancellous bone (G4) and solid PMMA (G5) samples. RESULTS: Scanning electron microscopy (SEM) of all experimental samples (G1 - G3) revealed a random distribution and a wide size variation of pores ranging from 50 µm to 3 mm. Micro-CT showed that G2 have high porosity and lower interconnectivity of pores. No significant differences in yield strength and Young's modulus were observed among G1, G2 and G3. G4 samples were slightly stronger and less elastic than the other groups. Solid PMMA is extremely strong and inelastic. CONCLUSIONS: PMMA based porous cement met the expected characteristics. High porosity with large and interconnected pores may allow for bone ingrowth. Strength and elasticity similar to cancellous bone may enhance mechanical stimuli to bone remodeling. Observational Descriptive Study. |
format | Online Article Text |
id | pubmed-4544528 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Sociedade Brasileira de Ortopedia e Traumatologia |
record_format | MEDLINE/PubMed |
spelling | pubmed-45445282015-08-31 Physical and mechanical characterization of a porous cement for metaphyseal bone repair Cimatti, Bruno Engel, Edgard Eduard Nogueira-Barbosa, Marcello Henrique Frighetto, Paulo Donato Volpon, José Batista Acta Ortop Bras Original Articles OBJECTIVE: Macroporous cement with mechanical properties similar to cancellous bone may improve the treatment of large bone defects in relation to solid acrylic cement. The aim of this study was to compare physical and mechanical characteristics of a polymethyl methacrylate (PMMA) based porous cement with cancellous bone. METHODS: Compressive strength and pore size, interconnectivity, and distribution of cylindrical porous PMMA cement samples containing 10% (G1), 20% (G2) or 30% (G3) effervescent components were analyzed. Results were compared to bovine cancellous bone (G4) and solid PMMA (G5) samples. RESULTS: Scanning electron microscopy (SEM) of all experimental samples (G1 - G3) revealed a random distribution and a wide size variation of pores ranging from 50 µm to 3 mm. Micro-CT showed that G2 have high porosity and lower interconnectivity of pores. No significant differences in yield strength and Young's modulus were observed among G1, G2 and G3. G4 samples were slightly stronger and less elastic than the other groups. Solid PMMA is extremely strong and inelastic. CONCLUSIONS: PMMA based porous cement met the expected characteristics. High porosity with large and interconnected pores may allow for bone ingrowth. Strength and elasticity similar to cancellous bone may enhance mechanical stimuli to bone remodeling. Observational Descriptive Study. Sociedade Brasileira de Ortopedia e Traumatologia 2015 /pmc/articles/PMC4544528/ /pubmed/26327801 http://dx.doi.org/10.1590/1413-785220152304145751 Text en http://creativecommons.org/licenses/by-nc/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Articles Cimatti, Bruno Engel, Edgard Eduard Nogueira-Barbosa, Marcello Henrique Frighetto, Paulo Donato Volpon, José Batista Physical and mechanical characterization of a porous cement for metaphyseal bone repair |
title | Physical and mechanical characterization of a porous cement for metaphyseal bone repair |
title_full | Physical and mechanical characterization of a porous cement for metaphyseal bone repair |
title_fullStr | Physical and mechanical characterization of a porous cement for metaphyseal bone repair |
title_full_unstemmed | Physical and mechanical characterization of a porous cement for metaphyseal bone repair |
title_short | Physical and mechanical characterization of a porous cement for metaphyseal bone repair |
title_sort | physical and mechanical characterization of a porous cement for metaphyseal bone repair |
topic | Original Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4544528/ https://www.ncbi.nlm.nih.gov/pubmed/26327801 http://dx.doi.org/10.1590/1413-785220152304145751 |
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