Functionally graded materials for knee and hip arthroplasty; an update on design, optimization, and manufacturing

Najibi, Amir; Mokhtari, Tahmineh

doi:10.1016/j.compstruct.2023.117350

Cited by 21 publications

(1 citation statement)

References 201 publications

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“…Although the failure rate of hip prostheses remains low, a small percentage of failures may result in a considerable number of cases of implant loosening, which often necessitates revision surgery. In replacement procedures for load-bearing joints, such as the hip or knee, metallic materials are favored because of their mechanical stability [7][8][9][10]. Among the most commonly used metallic materials are stainless steel [11,12], titanium alloys [13,14], and cobalt-chrome alloys [15,16].…”

Section: Introductionmentioning

confidence: 99%

Surface Morphology and Human MG-63 Osteoblasic Cell Line Response of 316L Stainless Steel after Various Surface Treatments

Hsiao,

Lin,

et al. 2023

Metals

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In this study, the effects of three distinct surface treatment techniques on 316L stainless steel were investigated: low-temperature immersion corrosion, shot peening followed by immersion corrosion, and electrochemical corrosion. These techniques were selected with a focus on their potential implications for biomedical implant applications, as research gaps persist in understanding the influence of these treatments. A comprehensive examination of surface alterations was conducted using scanning electron microscopy, Raman spectroscopy, and α-step thin-film thickness profiling. Furthermore, human MG-63 osteoblastic cell line adhesion was evaluated using Liu’s stain and metallographic optical microscopy. Notable differences in cell-adhesion behavior based on the chosen surface treatment methods were observed. Specifically, weak cell adhesion was observed after low-temperature immersion and shot peening followed by immersion corrosion. In contrast, electrochemical corrosion, especially when conducted with a high current density and low corrosive-solution concentration, resulted in a uniformly corroded surface, which, in turn, promoted dense cell adhesion. Porous oxide layers were generated using all three techniques, but the efficacy of shot peening (applied at 1 kg/cm2 for 20 s) and electrochemical corrosion (using 0.5 M HCl) as promising processes were highlighted by our experimental results. Uniformly dense corrosion pits were produced through electrochemical corrosion, while semicircular grooves with small corrosion pits were the result of shot peening, both of which were found to be favorable for cell adhesion. The superior cell adhesion observed with electrochemical corrosion further emphasizes its suitability for biomedical applications.

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Section: Introductionmentioning

confidence: 99%

Surface Morphology and Human MG-63 Osteoblasic Cell Line Response of 316L Stainless Steel after Various Surface Treatments

Hsiao,

Lin,

et al. 2023

Metals

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A numerical investigation for the development of functionally graded Ti/HA tibial implant for total ankle replacement: Influence of material gradation law and volume fraction index

Jyoti,

Ghosh

2024

J Biomed Mater Res

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Stress shielding is one of the major concerns for total ankle replacement implants nowadays, because it is responsible for implant‐induced bone resorption. The bone resorption contributes to the aseptic loosening and failure of ankle implants in later stages. To reduce the stress shielding, improvements can be made in the implant material by decreasing the elastic mismatch between the implant and the tibia bone. This study proposes a new functionally graded material (FGM) based tibial implant for minimizing the problem of stress shielding. Three‐dimensional finite element (FE) models of the intact tibia and the implanted tibiae were created to study the influence of material gradation law and volume fraction index on stress shielding and implant‐bone micromotion. Different implant materials were considered that is, cobalt–chromium, titanium (Ti), and FGM with Ti at the bottom and hydroxyapatite (HA) at the top. The FE models of FGM implants were generated by using different volume fractions and the rule of mixtures. The rule of mixtures was used to calculate the FGM properties based on the local volume fraction. The volume fraction was defined by using exponential, power, and sigmoid laws. For the power and sigmoid law varying volume fraction indices (0.1, 0.2, 0.5, 1, 2, and 5) were considered. The geometry resembling STAR® ankle system tibial implant was considered for the present study. The results indicate that FGMs lower stress shielding but also marginally increase implant‐bone micromotion; however, the values were within the acceptable limit for bone ingrowth. It is observed that the material gradation law and volume fraction index influence the performance of FGM tibial implants. The tibial implant composed of FGM using power law with a volume fraction index of 0.1 was the preferred option because it showed the least stress shielding.

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Advanced medical monitoring: 3D printed prosthetics with integrated strain sensor

Resendes,

Freitas Rodrigues,

Cruz

et al. 2024

Prog Addit Manuf

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Functionally graded materials for knee and hip arthroplasty; an update on design, optimization, and manufacturing

Cited by 21 publications

References 201 publications

Surface Morphology and Human MG-63 Osteoblasic Cell Line Response of 316L Stainless Steel after Various Surface Treatments

Surface Morphology and Human MG-63 Osteoblasic Cell Line Response of 316L Stainless Steel after Various Surface Treatments

A numerical investigation for the development of functionally graded Ti/HA tibial implant for total ankle replacement: Influence of material gradation law and volume fraction index

Advanced medical monitoring: 3D printed prosthetics with integrated strain sensor

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