Biomechanical evaluation of glass fiber/polypropylene composite bone fracture fixation plates: Experimental and numerical analysis

Kabiri, Ali; Liaghat, Gholamhossein; Alavi, Fatemeh

doi:10.1016/j.compbiomed.2021.104303

Cited by 20 publications

(14 citation statements)

References 35 publications

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“…The fixation plate structures were considered in 1mm (stable fracture) and 10 mm (unstable fracture) gaps to simulate comminuted fracture patterns. 28 A gap of 10 mm was assumed to simulate the worst-case scenario. Then, the bones were drilled to insert six 3mm metallic cortical screws.…”

Section: In Vitro Experimental Analysismentioning

confidence: 99%

A comparative study of 3D printing and heat-compressing methods for manufacturing the thermoplastic composite bone fixation plate: Design, characterization, and in vitro biomechanical experimentation

Kabiri

Liaghat

Alavi

et al. 2021

Proc Inst Mech Eng H

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Metallic bone fixations, due to their high rigidity, can cause long-term complications. To alleviate metallic biomaterials’ drawbacks, in this research new Glass Fiber/Polypropylene (GF/PP) composite internal fixations were developed, and an investigation of their mechanical behavior was performed through in vitro biomechanical experiments. Short randomly oriented, long unidirectional prepreg, and long unidirectional fiber yarn were considered as reinforcements, and the effects on their mechanical properties of different manufacturing processes, that is, 3D printing and heat-compressing, were investigated. The constructed fixation plates were tested in the transversely fractured diaphysis of bovine tibia under axial compression loading. The overall stiffness and the Von Mises strain field of the fixation plates were obtained within stable and unstable fracture conditions. The samples were loaded until failure to determine their failure loads, strains, and mechanisms. Based on the results, the GF/PP composite fixation plates can provide adequate interfragmentary movement to amplify bone ossification, so they can provide proper support for bone healing. Moreover, their potential for stress shielding reduction and their load-bearing capacity suggest their merits in replacing traditional metallic plates.

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Section: In Vitro Experimental Analysismentioning

confidence: 99%

A comparative study of 3D printing and heat-compressing methods for manufacturing the thermoplastic composite bone fixation plate: Design, characterization, and in vitro biomechanical experimentation

Kabiri

Liaghat

Alavi

et al. 2021

Proc Inst Mech Eng H

Self Cite

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“…Bovine cortical femur bone was selected to prepare the experimental materials since it is similar homogenous thermal and mechanical properties to the human cortical cranial. 21 The central part of the bovine femur diaphysis was chosen for the grinding operation region. The fresh bones were purchased from the local butcher immediately after the slaughter (no animals were sacrificed specifically for this study).…”

Section: In Vitro Experimental Proceduresmentioning

confidence: 99%

“…The spindle tool was connected to the motor console, which caused the grinding tool to spin at high speed of 45,000 rpm. The grinding operations were conducted for feed rates of 10, 20, and 40 mm min 21 . The grinding path length was 80 mm, and the forward type was selected for feeding (Figure 1(b)).…”

Section: In Vitro Experimental Proceduresmentioning

confidence: 99%

“…They compared the results of numerical modeling obtained from the parabolic Fourier equation with experimental cases. The rotational speed of 60,000 rpm and feed rate of 20 mm min 21 are set in the presented mathematical model. Then, the obtained temperature distribution is compared with the PHTE results and deviations between the both are observed especially in the early stages of the transient conduction process.…”

Section: Comparison Of Hpbte With Phtementioning

confidence: 99%

“…Due to the effect of heat wave velocity on hyperbolic Pennes bioheat transfer, the enormous heat source moving speed (grinding feed rate) increases the system nonlinearity. To investigate the impact of feed rate on the bone temperature, it is chosen as n = 10 mm min 21 , n = 20 mm min 21 , and n = 40 mm min 21 , respectively. The higher feed rate (higher horizontally cutting force) increases the instantaneous heat generation.…”

Section: Estimation Of Bone Temperature and Necrosis Due To Various Feed Ratesmentioning

confidence: 99%

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Non-Fourier bioheat model for bone grinding with application to skull base neurosurgery

Kabiri

Talaee

2021

Proc Inst Mech Eng H

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Bone grinding is used to remove the skull bone and access tumors through the nasal passage during cranial base neurosurgery. The generated heat of the spherical diamond tool propagates and could damage the nerves or coagulate the arteries blood. Little is known about the non-Fourier behavior of heat propagation during bone grinding. Therefore, this study develops an analytical model of the hyperbolic Pennes bioheat transfer equation (HPBTE) to calculate the three-dimensional temperature and necrosis in the grinding region. In vitro experimental investigations were carried out, and the contact zone temperature was measured using an infrared thermography system to validate the proposed thermal model. The results demonstrate that the HPBTE provides more reliable temperature evaluation and thermal damage than Fourier or parabolic heat transfer equation (PHTE). Due to the low thermal diffusivity of the bone, the lower grinding feed rate leads to higher temperature amplitude and a smaller radius of the affected zone in the surface and depth of the bone. Also, the intensity of bone necrosis decreases with the increase of the feed rate, and the shape of the damage zone becomes stretched. This analytical model can assess the potential risk of the surgery before clinical trials. Also, it could be used for comparing the different operating conditions to minimize bone necrosis and improve the control process in neurosurgeries.

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Strain rate effects on thermoplastic composites with mechanical interlocking

Kothari

Choi

Zhao³

et al. 2021

Polymer Composites

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Fiber reinforced thermoplastic composites are limited due to poor interfacial bonding between the nonpolar/nonreactive polymer matrix and fiber surface.Recently, a concept of controlled mechanical interlocking between fiber and matrix surface was proposed to improve the interfacial bonding in fiber reinforced thermoplastic composites. Study results show promising performance of the approach under static loading conditions. In this work, we study the effect of strain rate on the interfacial bonding behavior under dynamic loading conditions. A parametric study of the strain rate effect is performed for which different surface microarchitectures of a glass/polypropylene composite system are considered. A three network model is implemented for modeling mechanical behavior of polymer, which is calibrated using a set of stress-strain curves experimentally obtained at various strain rates. The strength calcula-

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Biomechanical evaluation of glass fiber/polypropylene composite bone fracture fixation plates: Experimental and numerical analysis

Cited by 20 publications

References 35 publications

A comparative study of 3D printing and heat-compressing methods for manufacturing the thermoplastic composite bone fixation plate: Design, characterization, and in vitro biomechanical experimentation

A comparative study of 3D printing and heat-compressing methods for manufacturing the thermoplastic composite bone fixation plate: Design, characterization, and in vitro biomechanical experimentation

Non-Fourier bioheat model for bone grinding with application to skull base neurosurgery

Strain rate effects on thermoplastic composites with mechanical interlocking

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