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使用有限元分析评估一种骨增强技术

EVALUATION OF A BONE REINFORCEMENT TECHNIQUE USING FINITE ELEMENT ANALYSIS.

作者信息

Freitas Anderson, Silva Lucas Carreiro DA, Godinho Nathan Drumond Vasconcelos, Farvardin Amirhossein, Armand Mehran, Paula Ana Patrícia DE

机构信息

. Hospital Ortopédico e Medicina Especializada, Brasília, DF, Brazil.

. Hospital Regional do Gama, Brasília, DF, Brazil.

出版信息

Acta Ortop Bras. 2018 Jan-Feb;26(1):59-62. doi: 10.1590/1413-785220182601181560.

DOI:10.1590/1413-785220182601181560
PMID:29977147
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6025497/
Abstract

OBJECTIVES

To compare the results of a simulated fall on the greater trochanter in the proximal portion of a synthetic femur before and after femoral reinforcement with tricalcium phosphate bone cement (TP) and polymethyl methacrylate (PMMA), using finite element analysis (FEA).

METHODS

Using two synthetic proximal femurs, a FEA simulating a fall on the greater trochanter was performed, using the Bi-directional Evolutionary Structural Optimization (BESO) program. For this analysis, the femurs were filled with TP and PMMA after perforations were created in the trochanteric region and neck. The results were compared with the strength values obtained from testing the control specimen, a synthetic bone without reinforcement.

RESULTS

FEA showed a value of 600 N prior to reinforcement. After cementing with PMMA, the load increased by 57.5% (945 N), and by 53% (920 N) after cementing with TP.

CONCLUSION

Synthetic femurs gained resistance to fracture-causing forces in a simulated fall on the trochanter after bone reinforcement with PMMA and TP. Level of Evidence III; Experimental study.

摘要

目的

使用有限元分析（FEA）比较在磷酸三钙骨水泥（TP）和聚甲基丙烯酸甲酯（PMMA）对股骨进行增强前后，合成股骨近端大转子处模拟跌倒的结果。

方法

使用两根合成股骨近端，采用双向进化结构优化（BESO）程序进行大转子处模拟跌倒的有限元分析。在此分析中，在转子区域和颈部打孔后，股骨用TP和PMMA填充。将结果与测试对照标本（未增强的合成骨）获得的强度值进行比较。

结果

有限元分析显示增强前的值为600N。用PMMA骨水泥固定后，载荷增加了57.5%（945N），用TP骨水泥固定后增加了53%（920N）。

结论

在用PMMA和TP对骨进行增强后，合成股骨在转子处模拟跌倒中获得了对致骨折力的抵抗力。证据级别III；实验研究。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9f88/6025497/479700f8bf1c/1413-7852-aob-26-01-00059-gf4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9f88/6025497/4ad4a20e36b7/1413-7852-aob-26-01-00059-gf1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9f88/6025497/46b78ecb53f4/1413-7852-aob-26-01-00059-gf2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9f88/6025497/c26e430f64cc/1413-7852-aob-26-01-00059-gf3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9f88/6025497/479700f8bf1c/1413-7852-aob-26-01-00059-gf4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9f88/6025497/4ad4a20e36b7/1413-7852-aob-26-01-00059-gf1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9f88/6025497/46b78ecb53f4/1413-7852-aob-26-01-00059-gf2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9f88/6025497/c26e430f64cc/1413-7852-aob-26-01-00059-gf3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9f88/6025497/479700f8bf1c/1413-7852-aob-26-01-00059-gf4.jpg

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