Analysis of Mechanical Stability for External Fixation Device in the Case of Anterior-Posterior Bending

Pervan, Nedim; Muminović, Adis J.; Mešić, Elmedin; Delić, Muamer; Muratović, Enis

doi:10.12913/22998624/146857

Cited by 6 publications

(5 citation statements)

References 11 publications

(15 reference statements)

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“…The most commonly used materials are PVC (juvidur), wood, aluminum, copper, etc. In this investigation, beech wood with known mechanical characteristics, similar to human bone, was used for the bone model material (Table 1) [17,18].…”

Section: Development Of Cad/fem Modelmentioning

confidence: 99%

The Impact of Geometry on the Mechanical Stability of Plates for Internal Bone Fixation

Pervan¹,

Mešić²,

Metović³

et al. 2023

Adv. Sci. Technol. Res. J.

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The aim of this work is to investigate the impact of geometry on the mechanical stability of characteristic structural solutions of plates for internal bone fixation using the finite element method (FEM). Based on the realistic construction of plates for internal bone fixation, 3D geometric and FEM models were formed, and then structural analysis was carried out in the CAD/CAE system CATIA V5. Five different types of plates for internal bone fixation were tested under two types of loads: axial pressure and torque in the case of application to the femur. During the structural analysis, stresses and displacements were monitored at characteristic points of the structure. The most attention was paid to the relative displacements of the bone model fragments, because the stiffness of the plates for the internal fixation of the bone was determined based on them. At the end of the paper, the results of all analyzed plates are presented, their mutual comparison as well as the conclusion in which, based on everything done, it was stated which plate would be the most favorable solution for a given case of bone fracture.

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Section: Development Of Cad/fem Modelmentioning

confidence: 99%

The Impact of Geometry on the Mechanical Stability of Plates for Internal Bone Fixation

Pervan¹,

Mešić²,

Metović³

et al. 2023

Adv. Sci. Technol. Res. J.

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show abstract

“…The General Structural Analysis module was used in the next step of model creation to complete the FEM model and define the material for each component. The material of the bone fragments was assumed to be orthotropic with properties defined according to Table II [15][16]. After the materials were defined, the next step in FEM processing was the discretization of the model and the definition of the finite element type.…”

Section: Development Of the Cad/fem Modelmentioning

confidence: 99%

Mechanical Stability Analysis of the External Unilateral Fixation Device due to the Impact of Axial Pressure

Pervan¹,

Mešić²,

Muminović³

et al. 2023

Eng. Technol. Appl. Sci. Res.

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This study performed a mechanical stability analysis for the impact of axial pressure on an Ultra X external unilateral fixation device applied to a tibia with an open fracture. The real construction of the fixation device was used to create a 3D geometric model using a Finite Element Method (FEM) model, which was made to perform structural analysis in the CATIA V5 (Computer Aided Three-dimensional Interactive Application) CAD/CAE system. Specific stresses and displacements were observed at points of interest using structural analysis. The focus was on the relative displacements of the proximal and distal bone segments in the fracture zone. These displacements were used to calculate the stiffnesses of the bone in the fracture zone and the fixation device itself. The results obtained provide the necessary information regarding the stability of the Ultra X fixation device.

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“…During the structural analysis, the displacement values at the point of loading were monitored (Figure 4), based on which the stiffness of the fixator structure is defined as the relationship between the load and the displacement of the bone at the point of impact of the load. The stiffness of the fixator structure according to AP bending (Cp) is calculated using the following relation [25]:…”

Section: Finite Element Model and Structural Analysis Of Fixatorsmentioning

confidence: 99%

Analysis of Biomechanical Characteristics of External Fixators with Steel and Composite Frames during Anterior–Posterior Bending

et al. 2023

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This paper presents a comparative analysis of the biomechanical characteristics of an external fixator with a frame made of two different materials (stainless steel and composite material) during anterior–posterior bending. Before the test itself, two representative configurations of the Sarafix fixator were selected for application on the lower leg and upper extremities under the designations B50 and C50, which are most widely used in orthopedic practice. The examination of the biomechanical characteristics of the external fixator was carried out using the structural analysis of the construction performance of the Sarafix fixator using the finite element method, the results of which were verified through experimental tests. The developed experimental and FEM models study the movement of the fracture crack and enable the determination of the stiffness of structural designs as well as the control of the generated stresses at the characteristic locations of the fixator. The results show that the fixator with a carbon frame has lower stresses at critical points in the construction compared to the fixator with a steel frame, in the amount of up to 49% (at the measuring point MT+) or up to 46% (at the measuring point MT−) for both fixture test configurations. The fixator with a carbon frame has greater displacements at the fracture site compared to the fixator with a steel frame, in the amount of up to 45% (for configuration B50) or up to 31% (for configuration C50). The stiffness of the structure for both test configurations of the fixator is lower in the fixator with a carbon frame compared to the fixator with a steel frame by up to 27%. Based on the findings of this study, we can conclude that a fixator with a steel frame has better biomechanical characteristics compared to a carbon frame.

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Analysis of Mechanical Stability for External Fixation Device in the Case of Anterior-Posterior Bending

Cited by 6 publications

References 11 publications

The Impact of Geometry on the Mechanical Stability of Plates for Internal Bone Fixation

The Impact of Geometry on the Mechanical Stability of Plates for Internal Bone Fixation

Mechanical Stability Analysis of the External Unilateral Fixation Device due to the Impact of Axial Pressure

Analysis of Biomechanical Characteristics of External Fixators with Steel and Composite Frames during Anterior–Posterior Bending

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