The impact of surface and geometry on coefficient of friction of artificial hip joints

Choudhury, Dipankar; Vrbka, Martin; Mamat, Azuddin; Stavness, Ian; Roy, Chanchal K.; Mootanah, Rajshree; Křupka, Ivan

doi:10.1016/j.jmbbm.2017.05.011

Cited by 41 publications

(22 citation statements)

References 50 publications

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“…Focusing on the effect of the implant material, the lowest friction was observed for ceramic, followed by metal and oxinium. This is in a compliance with previous observations [22,23,45]. Regarding two generations of ceramic, lower friction was detected for alumina which also corresponds to literature [4].…”

Section: Discussionsupporting

confidence: 93%

“…However, it must be emphasized that the most of the studies describing very low friction factors often deal with a simplified configuration (e.g., pin-on-disc) considering low loads at low speeds. Therefore, comparable results come from the experiments performed using the hip simulator employing real ball-on-cup model [22,23,45]. In all the mentioned studies, 25% BS was used as the test lubricant.…”

Section: Discussionmentioning

confidence: 85%

“…Surprisingly, in the case of MoP contact, the effect of the dimples was found to be negative independently of an array. For MoM, triangular and square arrays led to decreased friction while circular arrangement caused friction increase [22]. A phenomenon of elevated friction in some cases was attributed mainly to the larger diameter and the depth of the dimples made by laser texturing.…”

Section: Introductionmentioning

confidence: 98%

“…Since it was shown that contact conformity plays an important role, Choudhury et al [22] focused on the effect of the dimples made on the femoral heads on a friction coefficient. The measurements were realized using pendulum hip simulator in order to ensure real contact geometry [23].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Running-in friction of hip joint replacements can be significantly reduced: The effect of surface-textured acetabular cup

et al. 2020

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Hip joint replacements represent the most effective way of treatment for patients suffering from joint diseases. Despite the rapid improvement of implant materials over the last few decades, limited longevity associated with wear-related complications persists as the main drawback. Therefore, improved tribological performance is required in order to extend the service life of replacements. The effect of surface texturing of ultrahigh molecular weight polyethylene (UHMWPE) acetabular cup was investigated in the present study. Unique tilling method was utilized for manufacturing the dimples with controlled diameter and depths on the contact surface of the cup. The experiments with four commercial femoral components and two model lubricants were realized. The main attention was paid to a coefficient of friction considering the differences between the original and the dimpled cups. Results showed remarkable lowering of friction, in general. Focusing on the simulated human synovial fluid, friction was reduced by 40% (alumina ceramic), 38.8% (zirconia toughened ceramic), 25.5% (metal), and 9.9% (oxinium). In addition, the dimples helped to keep the friction stable without fluctuations. To conclude, the paper brings a new insight into frictional behaviour of the hip replacements during running-in phase which is essential for overall implant lifespan. It is believed that proper surface texturing may rapidly improve the life quality of millions of patients and may lead to considerable financial savings.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Running-in friction of hip joint replacements can be significantly reduced: The effect of surface-textured acetabular cup

et al. 2020

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“…As an example, a dental prosthesis made in titanium or zirconia ceramic is designed to be long with a rough surface, and has to be implanted without the presence of other tissues than the bone, like granulation or connective tissues. The main research direction concerning metallic or ceramic prosthesis focuses on coatings capable to improve the osteointegration and on deterioration of contact surfaces of total articulation prosthesis by friction …”

Section: Existing Types Of “Classical” Implanted Medical Devices Estamentioning

confidence: 99%

Tackling the Concept of Symbiotic Implantable Medical Devices with Nanobiotechnologies

Alcaraz

Cinquin

Martin

2018

Biotechnology Journal

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This review takes an approach to implanted medical devices that considers whether the intention of the implanted device is to have any communication of energy or materials with the body. The first part describes some specific examples of three different classes of implants, analyzed with regards to the type of signal sent to cells. Through several examples, the authors describe that a one way signaling to the body leads to encapsulation or degradation. In most cases, those phenomena do not lead to major problems. However, encapsulation or degradation are critical for new kinds of medical devices capable of duplex communication, which are defined in this review as symbiotic devices. The concept the authors propose is that implanted medical devices that need to be symbiotic with the body also need to be designed with an intended duplex communication of energy and materials with the body. This extends the definition of a biocompatible system to one that requires stable exchange of materials between the implanted device and the body. Having this novel concept in mind will guide research in a new field between medical implant and regenerative medicine to create actual symbiotic devices.

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Mussel‐Inspired Polyglycerol Coatings for Surface Modification with Tunable Architecture

Tang

Nickl

et al. 2023

Adv Materials Inter

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Mussel-inspired coatings, known for their outstanding substrate-independent adhesive capabilities, have numerous potential applications in materials science and biomedical fields. To improve the understanding of how these polymers' molecular structure and chemical composition affect their coating mechanisms and resulting coating properties, herein three mussel-inspired polymers are developed: dendritic polyglycerol with 40% catechol groups and 60% amines (dPG40), linear polyglycerol with 80% catechols and 20% amines (lPG80), and finally lPG40 with 40% catechols and 60% amines. After a series of characterizations, it is found that chemical surface modification with a monolayer coating can be easily achieved with lPG40, and that robust and well-defined nano-to micro-structural surface coatings are possible with lPG80 and dPG40. Tunable properties are found to include not only coating speed, but coating thickness, roughness, and surficial topography. This diverse suite of controllable attributes enables mussel-inspired polyglycerol (MiPG) coatings to satisfy a wide-range of applications on multiple materials.

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The impact of surface and geometry on coefficient of friction of artificial hip joints

Cited by 41 publications

References 50 publications

Running-in friction of hip joint replacements can be significantly reduced: The effect of surface-textured acetabular cup

Running-in friction of hip joint replacements can be significantly reduced: The effect of surface-textured acetabular cup

Tackling the Concept of Symbiotic Implantable Medical Devices with Nanobiotechnologies

Mussel‐Inspired Polyglycerol Coatings for Surface Modification with Tunable Architecture

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