Cancellous bone stresses surrounding the femoral component of a hip prosthesis: an elastic-plastic finite element analysis

Taylor, Mark; Tanner, K. E.; Freeman, M. A. R.; Yettram, A.L.

doi:10.1016/1350-4533(95)00018-i

Cited by 64 publications

(40 citation statements)

References 14 publications

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“…Moreover, Taylor et al [12] computed the periprosthetic stresses of different surface modifications of a femoral prosthesis component. They demonstrated higher stresses surrounding a 'press-fit' prosthesis in comparison with cemented or hydroxylapatite-coated stems.…”

Section: Fig 1 Loading Of the Femur (Data Obtained From Reference [17])mentioning

confidence: 99%

“…On the one hand it can be used to design and optimize prostheses [9] and on the other hand it can be used to examine the change in the physiological load distribution after THA [10][11][12][13] In this work, this method is used to determine the influence of the prosthesis type on post-operative stress shielding. Hence, a conventional uncemented stem and a femoral neck prosthesis are compared regarding the resulting change in the load distribution in the periprosthetic bone.…”

Section: Introductionmentioning

confidence: 99%

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Numerical investigations of stress shielding in total hip prostheses

Behrens

Wirth

Nolte

et al. 2008

Proc Inst Mech Eng H

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Aseptic loosening of the prosthesis is still a problem in artificial joint implants. The loosening can be caused by, among other factors, resorption of the bone surrounding the prosthesis owing to stress shielding. In order to find out the influence of the prosthesis type on post-operative stress shielding, a static finite element analysis of a femur provided with the conventional uncemented stem BICONTACT and of one with the femoral neck prosthesis SPIRON was carried out. Strain energy densities and maximal principal strain distributions were calculated and compared with the physiological situation. Here, stress shielding was demonstrated in both periprosthetic femora. To determine the areas of the stress shielding, the bone in each FE model was subdivided into three regions of interest (ROI): proximal, diaphyseal, and distal. The numerical computations show stress shielding in the proximal ROI of both periprosthetic femora. Diaphyseally, the femoral neck prosthesis SPIRON, in contrast to the conventional uncemented long-stem prosthesis BICONTACT, causes no decrease in the strain distribution and thus no stress shielding. Distally, no change in the load distribution of either periprosthetic femur could be found, compared with the physiological situation.

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Section: Fig 1 Loading Of the Femur (Data Obtained From Reference [17])mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical investigations of stress shielding in total hip prostheses

Behrens

Wirth

Nolte

et al. 2008

Proc Inst Mech Eng H

View full text Add to dashboard Cite

show abstract

“…Most studies assume that the supporting bone is linear elastic (Chong et al, 2010;Reggiani et al, 2008;Abdul-Kadir et al, 2008;Bah et al, 2011), despite some studies reporting stresses that approach or exceed the yield stress (Taylor et al, 1995;Kelly et al, 2013;Rohlmann et al, 1988;Ong et al, 2006;Hothi et al, 2011;Rothstock et al, 2010). In addition, the viscoelastic properties will lead to stress relaxation, particularly if an interference fit is simulated.…”

Section: Simulation Of the Initial Mechanical Environment Of The Bonementioning

confidence: 99%

“…Models using idealised material properties may capture gross differences, but are unlikely to capture subtle variations and localised effects. Bone is routinely assumed to be isotropic and linear elastic, except for some instances which have implemented anisotropy (Taylor et al, 2002;Hazrati Marangalou et al, 2013) and post-yield behaviour (Taylor et al, 1995;Kelly et al, 2013;Janssen et al, 2010;. These assumptions of linear and isotropic material behaviour are, in part, due to the limited information that can be extracted from clinical grade CT scans.…”

Section: Development Of a Representative Model With Appropriate Loadmentioning

confidence: 99%

Four decades of finite element analysis of orthopaedic devices: Where are we now and what are the opportunities?

Taylor

Prendergast

2015

Journal of Biomechanics

147

106

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a b s t r a c tFinite element has been used for more than four decades to study and evaluate the mechanical behaviour total joint replacements. In Huiskes seminal paper "Failed innovation in total hip replacement: diagnosis and proposals for a cure", finite element modelling was one of the potential cures to avoid poorly performing designs reaching the market place. The size and sophistication of models has increased significantly since that paper and a range of techniques are available from predicting the initial mechanical environment through to advanced adaptive simulations including bone adaptation, tissue differentiation, damage accumulation and wear. However, are we any closer to FE becoming an effective screening tool for new devices? This review contains a critical analysis of currently available finite element modelling techniques including (i) development of the basic model, the application of appropriate material properties, loading and boundary conditions, (ii) describing the initial mechanical environment of the bone-implant system, (iii) capturing the time dependent behaviour in adaptive simulations, (iv) the design and implementation of computer based experiments and (v) determining suitable performance metrics.The development of the underlying tools and techniques appears to have plateaued and further advances appear to be limited either by a lack of data to populate the models or the need to better understand the fundamentals of the mechanical and biological processes. There has been progress in the design of computer based experiments. Historically, FE has been used in a similar way to in vitro tests, by running only a limited set of analyses, typically of a single bone segment or joint under idealised conditions. The power of finite element is the ability to run multiple simulations and explore the performance of a device under a variety of conditions. There has been increasing usage of design of experiments, probabilistic techniques and more recently population based modelling to account for patient and surgical variability. In order to have effective screening methods, we need to continue to develop these approaches to examine the behaviour and performance of total joint replacements and benchmark them for devices with known clinical performance.Finite element will increasingly be used in the design, development and pre-clinical testing of total joint replacements. However, simulations must include holistic, closely corroborated, multi-domain analyses which account for real world variability.

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“…Clinical failures of more flexible implants underlined the importance of proper pre-clinical testing of new designs, for which finite element analysis (FEA) is a most widely used tool [19][20][21][22][23] and the method of choice to evaluate new stem concepts [18,24,25] both from an economical and an ethical point of view. Femoral bone modelling is a subject well covered in the literature [26][27][28][29][30].…”

Section: Total Hip Arthroplast Modellingmentioning

confidence: 99%

Reduced stress shielding with limited micromotions using a carbon fibre composite biomimetic hip stem: a finite element model

Caouette

Yahia

Bureau

2011

Proc Inst Mech Eng H

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Total hip arthroplasty (THA) enjoys excellent rates of success in older patients, but younger patients are still at risk of aseptic loosening and bone resorption from stress shielding. One solution to the stress shielding problem is to use a hip stem with mechanical properties matching those of cortical bone. The objective of the present study was to investigate numerically the biomechanical performance of such a biomimetic hip stem based on a hydroxyapatite (HA)-coated carbon fibre composite. A finite element model (FEM) of the biomimetic stem was constructed. Contact elements were studied to model the bone–implant interface in a non-osseointegrated and osseointegrated state in the best way. Three static load cases representing slow walking, stair climbing, and gait in a healthy individual were considered. Stress shielding and bone–implant interface micromotions were evaluated and compared with the results of a similar FEM based on titanium alloy (Ti–6Al–4V). The composite stems allowed for reduced stress shielding when compared with a traditional Ti–6Al–4V stem. Micromotions were slightly higher with the composite stem, but remained below 40 μm on most of the HA-coated surface. It is concluded that a biomimetic composite stem might offer a better compromise between stress shielding and micromotions than the Ti–6Al–4V stem with the same external geometry.

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Cancellous bone stresses surrounding the femoral component of a hip prosthesis: an elastic-plastic finite element analysis

Cited by 64 publications

References 14 publications

Numerical investigations of stress shielding in total hip prostheses

Numerical investigations of stress shielding in total hip prostheses

Four decades of finite element analysis of orthopaedic devices: Where are we now and what are the opportunities?

Reduced stress shielding with limited micromotions using a carbon fibre composite biomimetic hip stem: a finite element model

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