The mechanical response of commercially available bone simulants for quasi-static and dynamic loading

Brown, A. D.; Walters, J.B.; Zhang, Y X; Saadatfar, Mohammad; Escobedo-Diaz, Juan P.; Hazell, Paul J.

doi:10.1016/j.jmbbm.2018.10.032

Cited by 33 publications

(28 citation statements)

References 42 publications

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“…However, in recent studies of Brown at al. [ 16 ], it is mentioned that the ultimate stress values decrease in transversal and longitudinal directions as the strain rates increase. In this work, when carrying out several experiments on bovine femur and tibia at four speeds, the same findings were obtained in certain areas where the failure stresses decreased, while they increased in the others in the different directions (radial, axial and tangential).…”

Section: Discussionmentioning

confidence: 99%

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A Logarithmic Formulation for Anisotropic Behavior Characterization of Bovine Cortical Bone Tissue in Long Bones Undergoing Uniaxial Compression at Different Speeds

2021

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The mechanical properties of bone tissues change significantly within the bone body, since it is considered as a heterogeneous material. The characterization of bone mechanical properties is necessary for many studies, such as in prosthesis design. An experimental uniaxial compression study is carried out in this work on bovine cortical bone tissue in long bones (femur and tibia) at several speeds to characterize its anisotropic behavior. Several samples from different regions are taken, and the result selection is carried out considering the worst situations and failure modes. When considering different displacement rates (from 0.5 to 5 mm/min), three findings are reported: The first finding is that the behavior of bone tissues in radial and tangential directions are almost similar, which allows us to consider the transversal isotropic behavior under static loads as well as under dynamic loads. The second finding is that the failure stress values of the longitudinal direction is much higher than those of the radial and tangential directions at low displacement rates, while there is no big difference at the high displacement rates. The third finding is a new mathematical model that relates the dynamic failure stress with the static one, considering the displacement rates. This model is validated by experimental results. The model can be effectively used in reliability and optimization analysis in prosthesis design, such as hip prosthesis.

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Section: Discussionmentioning

confidence: 99%

“…The efficacy of using bone drilling data was considered as an indicator to estimate bone quality. Brown et al [ 16 ] and Gauthier et al [ 17 ] studied the influence of loading conditions (quasi-static loading) on human bone mechanical properties. As a result, the bone mechanical properties depend on the location and strain rate.…”

Section: Literature Reviewmentioning

confidence: 99%

A Logarithmic Formulation for Anisotropic Behavior Characterization of Bovine Cortical Bone Tissue in Long Bones Undergoing Uniaxial Compression at Different Speeds

2021

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“…Dynamic compression tests of cortical and cancellous bone were performed on the Split Hopkinson Pressure Bar (SHPB) 9,10 , which consists of a projectile, an input bar, and an output bar ( Fig. 2A).…”

Section: Dynamic Mechanical Testing Of Femoral Cortical and Cancelloumentioning

confidence: 99%

Simulation analysis of impact damage to the bone tissue surrounding a dental implant

Diao¹,

Li²,

Xin³

et al. 2020

Sci Rep

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Dental implant may suffer transient external impacts. To simulate the effect of impact forces on bone damage is very important for evaluation of damage and guiding treatment in clinics. In this study, an animal model was established by inserting an implant into the femoral condyle of New Zealand rabbit. Implant with good osseointegration was loaded with impact force. A three-dimensional finite element model was established based on the data of the animal model. Damage process to bone tissue was simulated with Abaqus 6.13 software combining dynamic mechanical properties of the femur. The characteristics of bone damage were analyzed by comparing the results of animal testing with numerical simulation data. After impact, cortical bone around the implant and trabecular at the bottom of the implant were prone to damage. The degree of damage correlated with the direction of loading and the magnitude of the impact. Lateral loading was most likely performed to damage cancellous bone. The stress wave formed by the impact force can damage the implant-bone interface and periimplant trabeculae. The data from numerical simulations were consistent with data from animal experiments, highlighting the importance of a thorough examination and evaluation based on the patient's medical history.

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“…For example, the occurring fractures are not comparable (cf. [1]) and in particular, the elastic properties and strength of common bone simulant material are described as insufficient [2]. Advanced models, such as the customized bone models of the distal femur of Wähnert et al [3] or the 3D-printed spine models of Hao et al [4] do not provide satisfactory results at present.…”

Section: Introductionmentioning

confidence: 99%

Development and Validation of Bone Models using Structural Dynamic Measurement Methods

Neupetsch

Hensel

Werner

et al. 2019

Current Directions in Biomedical Engineering

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Vibration measurement and signal analysis methods are common to evaluate the functionality and characteristics of technical components in different industrial and scientific areas. Modal analysis for example is a standard method to characterize the dynamic behavior of a structure and enables the development of validated bone models. The state of the art of analyzing bone structures does not include the modal damping, although it has a significant influence on the dynamic characteristics. Within the presented investigations, the modal analyses have been performed contactless with respect to excitation and response acquisition, which implies that there are no influences of shakers or sensor couplings. Therefore, an automatic impulse hammer and a 3D Scanning Laser Doppler Vibrometer were used for excitation and response detection. Various supports of the test specimens, surface pretreatments, excitation points and excitation impulses were examined to optimize the measurement setup and process. Experimental modal analysis data were analyzed by curve fitting methods to determine the modal parameters. To evaluate different structures and effects of damping, 3D printed artificial bones and animal in vitro bones were used to perform the measurements. To produce the cortical layer of the artificial bone models, volume models were generated based on medical image data and printed by polyamide-based selective laser sintering. The cancellous bone was represented by different foam fillings for the artificial bones. Thereby, the variation of the porosity was achieved by using different mixing ratios of polyurethane foam and hardener. Furthermore, the modal damping parameters were determined from the measurement of animal bones. The measurement time was optimized during the practical implementation of the parameter determination to minimize the influence of drying and decomposition processes on the measurement results.

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The mechanical response of commercially available bone simulants for quasi-static and dynamic loading

Cited by 33 publications

References 42 publications

A Logarithmic Formulation for Anisotropic Behavior Characterization of Bovine Cortical Bone Tissue in Long Bones Undergoing Uniaxial Compression at Different Speeds

A Logarithmic Formulation for Anisotropic Behavior Characterization of Bovine Cortical Bone Tissue in Long Bones Undergoing Uniaxial Compression at Different Speeds

Simulation analysis of impact damage to the bone tissue surrounding a dental implant

Development and Validation of Bone Models using Structural Dynamic Measurement Methods

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