External fixator configurations in tibia fractures: 1D optimization and 3D analysis comparison

Roseiro, Luís; Neto, Maria Augusta; Amaro, Ana M.; Leal, Rogério; Samarra, Miguel C.

doi:10.1016/j.cmpb.2013.09.018

Cited by 16 publications

(17 citation statements)

References 29 publications

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“…We found the power generation, air pollution [7], water resource utilization [8] and land use [9], of the thermal power plant in the network and literature.…”

Section: Case Study and Model Effectiveness Evaluationmentioning

confidence: 99%

The Value of a Land Use Project’s Ecosystem Services

Liu¹

2019

JENR

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The evaluation of ecosystem service value is a focus issue in the construction of ecological civilization in China. With the progress of human civilization, various types of land use projects are increasing day by day, which not only bring huge economic benefits, but also profoundly affect the regional land use pattern and ecological process, and have many influences on ecosystem services. In order to understand the real economic cost of land use projects, it is urgent to evaluate the ecosystem service cost of specific land use projects. In this paper, an ecological service evaluation model for comprehensive evaluation of land use project ecological service value is established. In this model, the emerging theory, virtual disposal cost method and market price method are applied to quantify the ecosystem service cost of land use project from four aspects of water, land, gas and biology. Using our model, we can estimate the ecological cost of a land use project more quickly and obtain the real economic cost of the project. Taking a thermal power plant as an example, the annual cost of the system service is calculated based on the ecosystem evaluation model and the existing model. By comparing the results of the two models, the feasibility and validity of the model are revealed.

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“…We found the power generation, air pollution [7], water resource utilization [8] and land use [9], of the thermal power plant in the network and literature.…”

Section: Case Study and Model Effectiveness Evaluationmentioning

confidence: 99%

The Value of a Land Use Project’s Ecosystem Services

Liu¹

2019

JENR

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“…[10][11][12] Given the difficulty of conducting clinical investigations on the necessary forces to stimulate bone healing, FEA figures as a useful aid. 13 This method has been widely used in both medical and orthopedic fields since it provides a comprehensive overview of vectors' dissolution in undermined structures, accurate failure detection and still avoids unnecessary costs in cases whereby the failure would only be identified after structural designing or manufacturing. 14 Moreover, the time from the very first conceptual design until production is reduced since the manufacturing of an enormous number of experimental specimens becomes unnecessary.…”

Section: Introductionmentioning

confidence: 99%

Análise de elementos finitos de um dispositivo de dinamização controlada para fixação circular externa

Faria

Gruhl

Ferro

et al. 2021

Rev Bras Ortop (Sao Paulo)

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Resumo Objetivo Construir um protótipo virtual de um dispositivo de fixação circular externa para fraturas em ossos longos com dinamização controlada a partir de dois materiais diferentes e prever seu comportamento mecânico por meio da análise de elementos finitos AEF). Método Modelos tridimensionais compostos de duas peças metálicas unidas por uma junta deslizante em rabo de andorinha e um amortecedor de silicone de alta densidade foram criados em um software. Análises de elementos finitos distintas foram simuladas considerando dois materiais (aço inoxidável ou titânio), modos (bloqueado ou dinamizado) e condições de carregamento (estático/pontual ou dinâmico/0,5 segundo) diferentes com carga axial uniforme de 150 kg na porção superior do dispositivo. Resultados O modelo de elementos finitos (EFs) apresentou 81.872 nós e 45.922 elementos. Com aço inoxidável, o pico de tensão máxima (140,98 MPa) foi alcançado com o dispositivo bloqueado e sob carga estática, enquanto o maior deslocamento (2.415 × 10−3 mm) foi obtido com o dispositivo bloqueado e sob carga dinâmica. Com titânio, o pico de tensão máxima (141,45 MPa) ocorreu com o dispositivo bloqueado e sob carga estática, enquanto o maior deslocamento (3.975 × 10−3 mm) foi observado com o dispositivo bloqueado e sob carga dinâmica. Conclusão O protótipo do dispositivo desempenhou o papel de suporte de tensão com deformação aceitável nos dois modos, bloqueado ou dinamizado, e pode ser fabricado com aço inoxidável ou titânio.

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“…Moreover, the external fixator is applied in a situation where damage soft tissues must be preserved and protect indirectly while providing support to bone fracture from mobile [6]. Apart from that, this system is a great alternative for an easy and low-cost application because the component assembled in this system remarks in maintaining the stiffness and stability of the fracture in bone [7]. There are a few configurations of external fixation which is uniplanar-unilateral, uniplanar-bilateral, biplanar and multiplanar and these types of configuration are being used in clinical nowadays [7].…”

mentioning

confidence: 99%

“…Apart from that, this system is a great alternative for an easy and low-cost application because the component assembled in this system remarks in maintaining the stiffness and stability of the fracture in bone [7]. There are a few configurations of external fixation which is uniplanar-unilateral, uniplanar-bilateral, biplanar and multiplanar and these types of configuration are being used in clinical nowadays [7]. Despite all the configurations of external fixator that can be found in the market, the configurations of each component in the external fixator are the most important.…”

mentioning

confidence: 99%

Finite Element Analysis of Different Pin Diameter of External Fixator in Treating Tibia Fracture

Ramlee¹,

Zainudin²,

Kadir³

2021

IJIE

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Biomechanical perspective of external fixator is one of the biggest elements that should be considered in treating fracture bone. This is due to the mechanical behavior of the structure could be analyzed and optimized in order to avoid failure, increase bone fracture healing rate and prevents preterm screw loosening. There are three significant factors that affect the stability of external fixator and those are the placement of pin at the bone, configuration and components of external fixator. All these factors contribute to a question, what is the optimum pin diameter which exerts good stress distribution? To date, the research on the above-mentioned factors are limited in the literature. Therefore, this study was conducted to evaluate the unilateral external fixator with different pin sizes in treating tibia shaft fracture via the finite element method. First and foremost, the development of the tibia shaft fracture was conducted using Mimics software. The computed tomography (CT) data image was utilized to develop three-dimensional tibia bone followed by crafting fracture on the bone. Meanwhile, the unilateral external fixator was developed using SolidWorks software. In this study, five pin diameters (4.5, 5.0, 5.5, 6.0 and 6.5 mm) were developed and analyzed. Both tibia bone and external fixator were meshed in 3-matic software. Simulation of this configuration took place in a finite element software, Marc.Mentat. From the findings, it is shown that the larger diameter of pin demonstrated the lowest stress distribution. The size of the 5.5mm pin shows optimum diameter in terms of stress distribution with the value of 21.50 MPa in bone and 143.33 MPa in fixator. Meanwhile the displacement value of 1.42mm in bone and 1.20mm in fixator. In conclusion, it is suggested that the pin diameter of 5.5 mm is the most favorable option in treating tibia shaft fracture in terms of mechanical perspective.

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External fixator configurations in tibia fractures: 1D optimization and 3D analysis comparison

Abstract: The use of external fixation devices in orthopedic surgery is very common in open tibial

Cited by 16 publications

References 29 publications

The Value of a Land Use Project’s Ecosystem Services

The Value of a Land Use Project’s Ecosystem Services

Análise de elementos finitos de um dispositivo de dinamização controlada para fixação circular externa

Finite Element Analysis of Different Pin Diameter of External Fixator in Treating Tibia Fracture

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