Finite element modelling and fatigue life assessment of a cemented total hip prosthesis based on 3D scanning

Babić, Milena; Verić, Ozren; Božić, Željko; Sušić, Aleksandar

doi:10.1016/j.engfailanal.2020.104536

Cited by 29 publications

(7 citation statements)

References 33 publications

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“…The wear debris from plastic material in metal-on-plastic (MoP) of hip prosthesis caused osteolysis (Ma et al, 1983;Livermore et al, 1990;Kabo et al, 1993), whereas wear debris from metal material in metal-on-metal (MoM) of hip prosthesis caused metallosis (Willis-Owen et al, 2011;Pesce et al, 2013). In the other hand, the biomaterial debris generated from the wear can lead to the aseptic loosening (Yang et al, 2007;Babic et al, 2020). This study will be focused on the MoM hip prosthesis.…”

Section: Introductionmentioning

confidence: 99%

Reducing Contact Stress of the Surface by Modifying Different Hardness of Femoral Head and Cup in Hip Prosthesis

et al. 2021

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The wear of hip prosthesis due to applied load and sliding distance during the patient's daily activity cannot be avoided. Wear causes osteolysis or metallosis due to the wear debris produced by the wear process. Several methods were used to reduce wear in metal-on-metal hip prostheses. One of the efforts performed to reduce wear was the differential-hardness concept. Based on the literature, the fine surface roughness of the femoral head are the reason why the hip prosthesis with differential-hardness reduces wear. Besides, the differential-hardness will contribute to the difference of modulus elasticity then influenced the contact stress on the surface contact. According to Archard's wear law, wear on the material pair is affected by contact stress. Therefore, the analysis of contact stress on the hip prosthesis with differential-hardness is important to investigate. The investigation performed by the static contact of two-dimensional axisymmetric with frictionless by using finite element simulation. The simulated models are the alumina vs. alumina, alumina vs. SS316L, CoCr vs. CoCr, CoCr vs. SS316L, and SS316L vs. UHMWPE. The purpose of this study is to determine the contact stress on the surface contact due to differential-hardness of the femoral head and cup. The results of simulations show that the differential-hardness marked by differences in the modulus of elasticity can reduce the contact stress on the surface contact if compare with the similar hardness.

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Section: Introductionmentioning

confidence: 99%

Reducing Contact Stress of the Surface by Modifying Different Hardness of Femoral Head and Cup in Hip Prosthesis

et al. 2021

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“…Nessa linha, a condução de estudos que otimizem a geometria dos implantes de acordo com as especificidades anatômicas do paciente, tornase parâmetro primordial na otimização de projeto dos implantes. Estudos utilizando análise por elementos finitos podem ser apontados como um caminho para pesquisas de geometria e falhas por fadiga (Babić et al, 2020;Bingol et al, 2011;Ferrand, 2018;Steinhauser et al, 2006).…”

Section: Considerações Finaisunclassified

Falhas em implantes de quadril

Dias

Gonçalves

2021

RSD

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A fratura óssea, indubitavelmente, reside em um dos principais problemas associados ao aumento da expectativa de vida da população. Principalmente, as fraturas femorais, as quais demandam por tratamento cirúrgico para redução da fratura por osteossíntese. Nas fraturas femorais com comprometimento grave da estrutura anatômica na epífise proximal, recomenda-se a substituição da articulação por implante total do quadril (THR – Total Hip Replacement). A artroplastia de quadril trata-se de um procedimento largamente utilizado na medicina, contudo, diversas falhas de implantes são reportadas. O objetivo desse trabalho consistiu em apresentar, por meio de uma revisão de literatura, as principais causas que levam os implantes totais de quadril a falharem em uso e elucidar ações de medidas corretivas para evitar tais falhas. Foram identificadas as principais causas de falhas nos implantes: fadiga, afrouxamento, metalose, associados a outros insucessos relacionado ao perfil do paciente. Concluiu-se que os dispositivos de osteossíntese precisam ser elaborados de forma multidisciplinar com parâmetros exigentes, envolvendo ciência médica, projeto de engenharia e seleção de material, com propósito de minorar os riscos de falhas e prevenir acidentes, por conseguinte, evitar ressubmeter o indivíduo a novo procedimento cirúrgico de correção.

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“…In a recent study ( Ortega et al, 2020 ), a finite element analysis (FEA) was performed that showed a stress concentration consistent with the experimentally observed location of crack initiation. In addition, the fatigue life of a hip implant and orthopedic plates were also recently investigated by comparing experiments and a linear elastic FEA in ( Babić et al, 2020 ), ( Parr et al, 2021 ). In these studies, FEA was able to accurately predict the location of fatigue crack initiations that were observed in the experiment.…”

Section: Introductionmentioning

confidence: 99%

Experimental analysis and numerical fatigue life prediction of 3D-Printed osteosynthesis plates

Nakhaei¹,

Sterba²,

Foletti

et al. 2023

Front. Bioeng. Biotechnol.

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The trend towards patient-specific medical orthopedic prostheses has led to an increased use of 3D-printed surgical implants made of Ti6Al4V. However, uncertainties arise due to varying printing parameters, particularly with regards to the fatigue limit. This necessitates time-consuming and costly experimental validation before they can be safely used on patients. To address this issue, this study aimed to employ a stress-life fatigue analysis approach coupled with a finite element (FE) simulation to estimate numerically the fatigue limit and location of failure for 3D-printed surgical osteosynthesis plates and to validate the results experimentally. However, predicting the fatigue life of 3D components is not a new concept and has previously been implemented in the medical device field, though without experimental validation. Then, an experimental fatigue test was conducted using a proposed modification to the staircase method introduced in ISO 12107. Additionally, a FE model was developed to estimate the stress cycles on the plate. The stress versus number of cycles to failure curve (S-N) obtained from the minimum mechanical properties of 3D-printed Ti6AI4V alloy according to ASTM F3001-14 to predict the fatigue limit. The comparison between experimental results and fatigue numerical predictions showed very good agreement. It was found that a linear elastic FE model was sufficient to estimate the fatigue limit, while an elastic-plastic model led to an accurate prediction throughout the implant’s cyclic life. The proposed method has great potential for enhancing patient-specific implant designs without the need for time-consuming and costly experimental regulatory testing.

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Finite element modelling and fatigue life assessment of a cemented total hip prosthesis based on 3D scanning

Cited by 29 publications

References 33 publications

Reducing Contact Stress of the Surface by Modifying Different Hardness of Femoral Head and Cup in Hip Prosthesis

Reducing Contact Stress of the Surface by Modifying Different Hardness of Femoral Head and Cup in Hip Prosthesis

Falhas em implantes de quadril

Experimental analysis and numerical fatigue life prediction of 3D-Printed osteosynthesis plates

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