2019
DOI: 10.1177/0954411919877970
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Effect of loading frequency on deformations at the bone–implant interface

Abstract: This study considers the time-dependent behaviour of bone in the context of loosening of metal implants, which is one of the typical complications of joint replacement and fracture-fixation surgeries. We employed viscoelastic properties developed from our previous experimental studies for trabecular bone in a representative bone–implant construct, which was subjected to cyclic loading at varying loading frequencies. We found that the separation between the bone and the implant is a function of loading frequenc… Show more

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Cited by 7 publications
(4 citation statements)
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“…Such time-dependent properties may accentuate loosening at the bone-implant interface when cyclic loading is applied [35], and the interfacial micromotions are also related to loading frequencies. [42]. The biomechanical performance of the cone to be used for rTKA under physiological cyclic loading needs further study by inclusion time-dependent response of bone in the computational model.…”
Section: Discussionmentioning
confidence: 99%
“…Such time-dependent properties may accentuate loosening at the bone-implant interface when cyclic loading is applied [35], and the interfacial micromotions are also related to loading frequencies. [42]. The biomechanical performance of the cone to be used for rTKA under physiological cyclic loading needs further study by inclusion time-dependent response of bone in the computational model.…”
Section: Discussionmentioning
confidence: 99%
“…Inclusion of nonlinear geometry is warranted when large displacements are likely to arise [8] and nonlinear material properties if large strain are expected [8,9]. Time-dependent properties should be incorporated if effect of cyclic loading [10,11] or when sudden impacts are being considered. When considering implant or bone failure, wear, fatigue and fracture are all difficult outcomes to predict using the FE method due to these requirements for time dependent and non-linear material properties and nonlinear geometry.…”
Section: Geometrymentioning
confidence: 99%
“…This can be important when addressing certain clinical questions. While commonly used elastic models can provide the location at which yielding/fracture would be expected to initiate [11], more complex nonlinear models are required to predict implant loosening, fracture propagation or wear [8][9][10][11][17][18][19][20] .…”
Section: Geometrymentioning
confidence: 99%
“…Failure of implant fixation usually occurs due to short-term and long-term instability of the bone-implant interface. Implant material properties [1]- [2] implant geometry [3]- [4] and configuration [5]- [7] external loading [8], and interfacial bonding [9] are among the factors that affect the stability of the implant-bone interface.…”
Section: Introductionmentioning
confidence: 99%