Biomechanical Optimization of a Novel Circular External Fixator (Optimization of Circular External Fixator)

Verim, Ozgur; Yaprakci, Mustafa Volkan; Karabulut, Abdurrahman

doi:10.1007/s40846-017-0242-4

Cited by 5 publications

(2 citation statements)

References 29 publications

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“…The IEF inner diameters range between 80 and 240 mm [77]. According to the study [78], the IEF inner diameter decrease from 155 to 130 mm resulted in increased stiffness and a 20% more positive response from the osteoblast matter.…”

Section: Testing Methodologymentioning

confidence: 97%

Bioinspired design proposal for a new external bone fixator device

Buso

Zanini

Titotto

2022

Biomed. Phys. Eng. Express

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The article presents a new medical device through an authorial and interdisciplinary approach. It consists of a flexible external fixator, whose flexible property may bring advantages over rigid mechanisms. Its design was inspired by the DNA biological mechanism of condensation, while the modeling was based on the pseudo-rigid modeling technique. From the models obtained, this study conducted prototyping and computational tests to obtain a proof-of-concept of the bioinspired theory and dynamic functioning effectiveness. The prototyping relied on hot glue manufacturing and the computational simulations consisted of linear static analysis. The experimental analysis concluded that the prototype with fewer beams and thinner beams delivered better results in all three parameters: flexibility, height variation and rotation arc. In the computational analysis, among the design models with the variation of the number of beams, the model with 8 beams performed better. Concerning thickness variation, the one whose beams measured 8mm in thickness showed better results. Among the models with length variation, the design made with 100 mm long beams better equilibrated the parameters.

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Section: Testing Methodologymentioning

confidence: 97%

Bioinspired design proposal for a new external bone fixator device

Buso

Zanini

Titotto

2022

Biomed. Phys. Eng. Express

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show abstract

“…Material properties of each component were assigned as shown in Table 1. The density was set to 8 (g/cm 3 ) for 316 L stainless steel Kirschner wire, and the density for PLA was 1.25 (g/cm 3 ) [11,15]. To ensure that the bone cannot slide freely along the wire in simulation, all interactions between the wires and the holes in the bone were defined as bonded.…”

Section: Finite Element Analysis (Fea)mentioning

confidence: 99%

The Effect of Twisted Wire Configuration on the Stability of External Fixator: A Biomechanical Study

Najim,

Hamandi,

Alzubaidi

2024

Int. J. Onl. Eng.

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The Ilizarov fixator is a type of external fixator that is used to treat patients who have suffered injuries from accidents, bone shortening, or nonunion of the bone. The principle behind the Ilizarov fixator is that thin wires (called Kirschner wires) are used to support the bones and connect them to framed rings. Before being fastened to the rings, the wires are tensioned and drilled through the bones. This study suggests using a new parallel wires configuration at the same level on the same ring and two revised versions, which are divergent and convergent models, and compare them with standard wires, 60 angle wires model. All models were designed using SolidWorks, a computer-aided design (CAD) software, and then analyzed in four conditions (axial compression, medial bending, posterior bending, and torsion) with Finite Element Analysis (FEA) using Ansys Workbench 2020 R2. Mechanical testing was conducted to validate the FEA results, A simple model consisting of a single ring, two K-wires, and polylactic acid (PLA) cylinders was utilized in a tensile test. It has been concluded from the results that the parallel model and its improvement have higher stiffness to axial compression, medial bending, and torsion, but a lower posterior bending stiffness, except the divergent model with 8-hole separation which has a relatively acceptable stiffness for posterior bending.

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Error identification and compensation regarding the kinematic parameter of the MD-PEF for tibial deformity correction

Tang

et al. 2023

Computers in Biology and Medicine

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Biomechanical Optimization of a Novel Circular External Fixator (Optimization of Circular External Fixator)

Cited by 5 publications

References 29 publications

Bioinspired design proposal for a new external bone fixator device

Bioinspired design proposal for a new external bone fixator device

The Effect of Twisted Wire Configuration on the Stability of External Fixator: A Biomechanical Study

Error identification and compensation regarding the kinematic parameter of the MD-PEF for tibial deformity correction

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