Bone creep and short and long term subsidence after cemented stem total hip arthroplasty (THA)

Norman, Timothy L.; Travis, Shultz,; Noble, Garrett J.; Gruen, Thomas A.; Blaha, John

doi:10.1016/j.jbiomech.2012.12.010

Cited by 18 publications

(10 citation statements)

References 48 publications

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“…The bone and the implant materials were assumed to be isotropic, homogeneous, and linearly elastic, as according to prior literature . In case of bone, the material properties [Young's modulus ( E in MPa) and bone density ( ρ in g cm −3 )] were assigned elementwise based on Hu values using empirical equations (Equation ) . The implant material was considered to be Ti‐6Al‐4V ( ρ = 4.43 g cm −3 , E = 115 GPa).…”

Section: Methodsmentioning

confidence: 99%

“…The implant material was considered to be Ti‐6Al‐4V ( ρ = 4.43 g cm −3 , E = 115 GPa). The Poisson's ratio was considered to be 0.3 for all cases

(}, \begin{array}{l} ρ = 0.2389 + ((), 0.0008531 \times Hu) \\ E = 6850 \times ρ^{1.49} \end{array})

…”

Section: Methodsmentioning

confidence: 99%

“…Aseptic loosening of the implant, because of periprosthetic bone resorption, is regarded as a vital cause of failure of total hip replacement (THR), often leading to revision surgeries and complicacy of the condition . Among the causes of periprosthetic bone resorption is the natural response of the bone toward stress shielding of the proximal portion of the femur, as the implant materials, mainly alloys, are much stiffer than the bone.…”

Section: Introductionmentioning

confidence: 99%

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Computational intelligence based design of implant for varying bone conditions

Chatterjee

Dey

Majumder

et al. 2019

Numer Methods Biomed Eng

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The objective is to make the strain deviation before and after implantation adjacent to the femoral implant as close as possible to zero. Genetic algorithm is applied for this optimization of strain deviation, measured in eight separate positions. The concept of composite desirability is introduced in such a way that if the microstrain deviation values for all eight cases are 0, then the composite desirability is 1. Artificial neural network (ANN) models are developed to capture the correlation of the microstrain in femur implants using the data generated through finite element simulation. Then, the ANN model is used as the surrogate model, which in combination with the desirability function serves as the objective function for optimization. The optimum achievable deviation was found to vary with the bone condition. The optimum implant geometry varied for different bone condition, and the findings act as guideline for designing patient-specific implant.

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Section: Methodsmentioning

confidence: 99%

“…The implant material was considered to be Ti‐6Al‐4V ( ρ = 4.43 g cm −3 , E = 115 GPa). The Poisson's ratio was considered to be 0.3 for all cases

(}, \begin{array}{l} ρ = 0.2389 + ((), 0.0008531 \times Hu) \\ E = 6850 \times ρ^{1.49} \end{array})

…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Computational intelligence based design of implant for varying bone conditions

Chatterjee

Dey

Majumder

et al. 2019

Numer Methods Biomed Eng

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“…creep) within the cement mantle over time to reach a stable position with an optimal stress distribution . Conversely, excessive cement creep can be detrimental, although there is still disagreement on the amount of creep that can be safely tolerated and if cement creep alone is responsible for levels of clinically observed implant subsidence . A variety of methods have been previously used to characterize the creep properties of bone cement including three‐point bending, tension, and confined compression…”

Section: Introductionmentioning

confidence: 99%

“…4 Conversely, excessive cement creep can be detrimental, 5,6 although there is still disagreement on the amount of creep that can be safely tolerated and if cement creep alone is responsible for levels of clinically observed implant subsidence. 7 A variety of methods have been previously used to characterize the creep properties of bone cement including three-point bending, 6 tension, 8,9 and confined compression. 10 Recently, the utilization of nanoindentation has increased for the mechanical characterization of polymers as it has been shown to have excellent sensitivity 11 and can be successfully used with limited material volumes.…”

Section: Introductionmentioning

confidence: 99%

Characterization of the quasi‐static and viscoelastic properties of orthopaedic bone cement at the macro and nanoscale

et al. 2016

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Acrylic bone cement is often used in total joint replacement procedures to anchor an orthopaedic implant to bone. Bone cement is a viscoelastic material that exhibits creep and stress relaxation properties, which have been previously characterized using a variety of techniques such as flexural testing. Nanoindentation has become a popular method to characterize polymer mechanical properties at the nanoscale due to the technique's high sensitivity and the small sample volume required for testing. The purpose of the present work therefore was to determine the mechanical properties of bone cement using traditional macroscale techniques and compare the results to those obtained from nanoindentation. To this end, the quasi-static and viscoelastic properties of two commercially available cements, Palacos and Simplex, were assessed using a combination of three-point bending and nanoindentation. Quasi-static properties obtained from nanoindentation tended to be higher relative to three-point bending. The general displacement and creep compliance trends were similar for the two methods. These findings suggest that nanoindentation is an attractive characterization technique for bone cement, due to the small sample volumes required for testing. This may prove particularly useful in testing failed/retrieved cement samples from patients where material availability is typically limited. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 1461-1468, 2017.

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The Müller self-locking cemented total hip prosthesis with polyethylene liner: After twenty years, what did they become?

Érivan

Villatte

Khelif³

et al. 2016

International Orthopaedics (SICOT)

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Our retrospective analysis confirms the good results seen with the MEM stem in the literature and support the "French paradox" concept. Failures of these prostheses with a cemented polyethylene cup are largely on the acetabular side and, as such, the cup is the weak link. Improvements in survival will require optimisation of cup fixation and the use of a ceramic head to reduce wear in patients with a long life expectancy.

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Bone creep and short and long term subsidence after cemented stem total hip arthroplasty (THA)

Cited by 18 publications

References 48 publications

Computational intelligence based design of implant for varying bone conditions

Computational intelligence based design of implant for varying bone conditions

Characterization of the quasi‐static and viscoelastic properties of orthopaedic bone cement at the macro and nanoscale

The Müller self-locking cemented total hip prosthesis with polyethylene liner: After twenty years, what did they become?

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