Application of magnetic fields to synovial joints

Tandon, Pushkar; Chaurasia, Amita; Jain, V. K.; Gupta, Tannu

doi:10.1016/0898-1221(91)90145-t

Cited by 9 publications

(9 citation statements)

References 16 publications

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“…Figure shows that process were increases when induced magnetic field increases. The same results has been obtained by Tandon and Chaurasia [3]. For simple bearing also it has been observed by many workers [13][14][15][16][17] that external magnetic field give rise to an increases in effective viscosity of ferrosolutions which has led to increasing applications of ferrofluids as lubricant in bearings.…”

Section: Resultssupporting

confidence: 82%

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Effect of Magnetic Field in Lubrication of Synovial Joints

Bali¹,

Sharma²

2005

Tribol Lett

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A two region flow model has been developed in this paper in the presence of external magnetic field for the better understanding of synovial joint lubrication mechanism. The model consists of two parallel porous cartilageous surfaces separated by a thin film of non newtonian lubricant representing the synovial fluid which is assumed to behave like a paramagnetic fluid system. In this paper, we have represented the cartilage by a mixture of two interacting continua and synovial fluid by viscoelastic fluid. A transverse magnetic field is applied to the system. We have used the modified form of Darcy's law given by Zahn and Rosenweig; to describe the penetration dynamics of magnetic fluids through porous media. Because of exact solution not being possible for the governing non-linear partial differential equations, the perturbation method has been used to obtain approximate solutions. The results have been obtained by computational techniques and compared by results available in the literature. In this paper, the possibility of increased efficiency of joint lubrication, particularly in diseased states by the application of applied magnetic fields has been explored. The applied magnetic field increases the load carrying capacity. Which helps in sustaining greater loads. Similarly, the viscoelastic parameter describes the increase in the concentration of the suspended hyaluronic acid molecules which, in turn, increases the overall viscosity of the lubricant, which also helps in sustaining greater loads.

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Section: Resultssupporting

confidence: 82%

“…The synovial joint constitutes a tribological system similar to any other bearing so that principal failure and their remedies are the same. In engineering systems, such situations are trackled by improving or changing the lubricant [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Effect of Magnetic Field in Lubrication of Synovial Joints

Bali¹,

Sharma²

2005

Tribol Lett

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“…The most frequently used joint which is the knee joint in the human body and even a very little problem with the knee joint will most certainly have an influence on a person's ability to do their daily tasks normally. Because of the vital role that the knee joints play in human mobility as well as the fact that they are a major load bearing joint, the important of the knee can not be stressed at any point of the time [3][4][5] . The knee joint is the biggest weight bearing joint in the human skeletal system, according to the American Academy of Orthopedic Surgeons, in addition, it is the most complex joint in the human skeletal system 4 .…”

Section: Human Knee Joint Modelling Using Mathematical Equationsmentioning

confidence: 99%

“…This difficulty may manifest itself in a variety of ways, including composition, function, geometry, and set-up. To this point, we have concentrated only on the description of the joints, selecting the most appropriate model for synovial fluid that can accurately reproduce the experimental data throughout a given range of deformations [3][4][5] . For the time being, let us develop the balancing laws that describe the flow of synovial fluid with some justification for simplifications.…”

Section: Human Knee Joint Modelling Using Mathematical Equationsmentioning

confidence: 99%

“…In case of synovial fluid flow, it is feasible to characterise it in term of the pressure field P and the velocity field V, both of which are regulated by the Naiver Stokes equations with the constraint of incomprehensibility as well as the pressure [5][6][7] . Porous fluids are defined as fluids in porous media in which the movement of momentum within the fluid as a consequence of shear stresses plays an essential role and in which the movement of momentum within the fluid is crucial 6, 7 .…”

Section: Balance Lawmentioning

confidence: 99%

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Significance of Brinkman and Stokes System Conjuncture in Human Knee Joint

Al-Atawi

HASNAIN²,

Saqib

et al. 2022

Preprint

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Stokes’s equation in the fluid domain and Brinkman’s equation in the porous media are combined in the current study which is designated by the Stokes-Brinkman coupling. The current paper gives a theoretical analysis of the Stokes-Brinkman coupling. It has been shown that such a model is a good match for the knee joint. A flow model has been investigated in order to get a better understanding of the convective diffusion of the viscous flow along the articular surfaces between the joints. The Beavers and Joseph slip conditions which are a specific boundary condition for the synovial fluid are used to solve the governing system of partial differential equations for the synovial fluid and the results are provided here. Through the development of an analytical solution and numerical simulation (using the finite volume approach) it is hoped that the mechanisms of nutritional transport into the synovial joint will be better understood. According to the data the average concentration has a negative connection with both the axial distance and the duration spent in the experiment. Many graphs have been utilized to gain understanding into the problem’s various characteristics including velocity and concentration, among others. Hyaluronate (HA) is considered to be present in porous cartilage surfaces and the viscosity of synovial fluid fluctuates in response to the amount of HA present.

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Bilateral control simulations for a pair of magnetically-coupled robotic arm and bacterium for in vivo applications

Tabak

2020

J Micro-Bio Robot

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Application of magnetic fields to synovial joints

Cited by 9 publications

References 16 publications

Effect of Magnetic Field in Lubrication of Synovial Joints

Effect of Magnetic Field in Lubrication of Synovial Joints

Significance of Brinkman and Stokes System Conjuncture in Human Knee Joint

Bilateral control simulations for a pair of magnetically-coupled robotic arm and bacterium for in vivo applications

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