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Arian Vistamehr, Steven A Kautz, Mark G Bowden, Richard R Neptune
No abstract text is available yet for this article.
September 6, 2016: Journal of Biomechanics
Tsz Hin Hui, Fan Zheng, Yuan Lin, Chuanhai Fu
No abstract text is available yet for this article.
September 6, 2016: Journal of Biomechanics
Anna Lee, Tanvi Bhatt, Yi-Chung Pai
No abstract text is available yet for this article.
September 6, 2016: Journal of Biomechanics
Heather A Himburg, Deborah M Grzybowski, Andrew L Hazel, Jeffrey A LaMack, Morton H Friedman
The biological response of living arteries to mechanical forces is an important component of the atherosclerotic process and is responsible, at least in part, for the well-recognized spatial variation in atherosusceptibility in man. Experiments to elucidate this response often generate maps of force and response variables over the arterial surface, from which the force-response relationship is sought. Rowland et al. discussed several statistical approaches to the spatial autocorrelation that confounds the analysis of such maps and applied them to maps of hemodynamic stress and vascular response obtained by averaging these variables in multiple animals...
September 1, 2016: Journal of Biomechanical Engineering
Hong-Jung Hsieh, Chih-Chung Hu, Tung-Wu Lu, Hsuan-Lun Lu, Mei-Ying Kuo, Chien-Chung Kuo, Horng-Chaung Hsu
BACKGROUND: Robot-based joint-testing systems (RJTS) can be used to perform unconstrained laxity tests, measuring the stiffness of a degree of freedom (DOF) of the joint at a fixed flexion angle while allowing the other DOFs unconstrained movement. Previous studies using the force-position hybrid (FPH) control method proposed by Fujie et al. (J Biomech Eng 115(3):211-7, 1993) focused on anterior/posterior tests. Its convergence and applicability on other clinically relevant DOFs such as valgus/varus have not been demonstrated...
2016: Biomedical Engineering Online
Kim Allison, Tim V Wrigley, Bill Vicenzino, Kim L Bennell, Alison Grimaldi, Paul W Hodges
No abstract text is available yet for this article.
July 2016: Clinical Biomechanics
R Penta, K Raum, Q Grimal, S Schrof, A Gerisch
UNLABELLED: Recent experimental data revealed a stiffening of aged cortical bone tissue, which could not be explained by common multiscale elastic material models. We explain this data by incorporating the role of mineral fusion via a new hierarchical modeling approach exploiting the asymptotic (periodic) homogenization (AH) technique for three-dimensional linear elastic composites. We quantify for the first time the stiffening that is obtained by considering a fused mineral structure in a softer matrix in comparison with a composite having non-fused cubic mineral inclusions...
June 2016: Bioinspiration & Biomimetics
Hsuan-Yu Chou, Sinan Müftü
No abstract text is available yet for this article.
April 21, 2016: Journal of Biomechanics
(no author information available yet)
No abstract text is available yet for this article.
March 2016: Journal of Biomechanical Engineering
Fabio Giuliano Caetano, Murilo José de Oliveira, Ana Lorena Marche, Fábio Yuzo Nakamura, Sergio Augusto Cunha, Felipe Arruda Moura
In the article by Caetano FG, et al, "Characterization of the Sprint and Repeated-Sprint Sequences Performed by Professional Futsal Players, According to Playing Position, During Official Matches," in the J Appl Biomech, 31(6), pp. 423-429,, the second author's name was incorrectly listed as Murilo José de Oliveira. The second author's name should have been listed as Murilo José de Oliveira Bueno.
February 2016: Journal of Applied Biomechanics
Luca Modenese, Elena Ceseracciu, Monica Reggiani, David G Lloyd
A challenging aspect of subject specific musculoskeletal modeling is the estimation of muscle parameters, especially optimal fiber length and tendon slack length. In this study, the method for scaling musculotendon parameters published by Winby et al. (2008), J. Biomech. 41, 1682-1688, has been reformulated, generalized and applied to two cases of practical interest: 1) the adjustment of muscle parameters in the entire lower limb following linear scaling of a generic model and 2) their estimation "from scratch" in a subject specific model of the hip joint created from medical images...
January 25, 2016: Journal of Biomechanics
Thomas Stief, Klaus Peikenkamp
BACKGROUND: Stress occurring at the feet while wearing footwear is often determined using pressure measurement systems. However, other forms of stress, such as bending, torsional and shear loadings, cannot be detected in shoes during day-to-day activities. Nevertheless, the detection of these types of stresses would be helpful for understanding the mechanical aspects of various kinds of hard and soft tissue injuries. Therefore, we describe the development of a new measuring device that allows the reliable determination of bending and torsional load at the foot in shoes...
2015: Journal of Foot and Ankle Research
Natalie C Pearson, James M Oliver, Rebecca J Shipley, Sarah L Waters
We present a simplified two-dimensional model of fluid flow, solute transport, and cell distribution in a hollow fibre membrane bioreactor. We consider two cell populations, one undifferentiated and one differentiated, with differentiation stimulated either by growth factor alone, or by both growth factor and fluid shear stress. Two experimental configurations are considered, a 3-layer model in which the cells are seeded in a scaffold throughout the extracapillary space (ECS), and a 4-layer model in which the cell-scaffold construct occupies a layer surrounding the outside of the hollow fibre, only partially filling the ECS...
June 2016: Biomechanics and Modeling in Mechanobiology
Lowell T Edgar, James B Hoying, Jeffrey A Weiss
Mechanical interactions during angiogenesis, i.e., traction applied by neovessels to the extracellular matrix and the corresponding deformation, are important regulators of growth and neovascularization. We have previously designed, implemented, and validated a coupled model of angiogenesis in which a discrete microvessel growth model interacts with a continuous finite element mesh through the application of local remodeling sprout stresses (Edgar et al. in Biomech Model Mechanobiol, 2014). However, the initial implementation of this framework does not take matrix density into account when determined these remodeling stresses and is therefore insufficient for the study of angiogenesis within heterogeneous matrix environments such as those found in vivo...
July 2015: Annals of Biomedical Engineering
(no author information available yet)
No abstract text is available yet for this article.
April 13, 2015: Journal of Biomechanics
(no author information available yet)
No abstract text is available yet for this article.
April 13, 2015: Journal of Biomechanics
H J Burd, R A Regueiro
An axisymmetric finite element implementation of a previously described structural constitutive model for the human lens capsule (Burd in Biomech Model Mechanobiol 8(3):217-231, 2009) is presented. This constitutive model is based on a hyperelastic approach in which the network of collagen IV within the capsule is represented by an irregular hexagonal planar network of hyperelastic bars, embedded in a hyperelastic matrix. The paper gives a detailed specification of the model and the periodic boundary conditions adopted for the network component...
November 2015: Biomechanics and Modeling in Mechanobiology
Azadeh A T Borojeni, Michelle L Noga, Andrew R Martin, Warren H Finlay
This work describes in vitro measurement of the total pressure loss at varying flow rate through anatomically realistic conducting airway replicas of 10 children, 4 to 8 years old, and 5 adults. Experimental results were compared with analytical predictions made using published airway resistance models. For the adult replicas, the model proposed by van Ertbruggen et al. (2005. J. Appl. Physiol. 98, 970-980) most accurately predicted central conducting airway resistance for inspiratory flow rates ranging from 15 to 90 L/min...
July 16, 2015: Journal of Biomechanics
Sagar Singh, Assimina A Pelegri, David I Shreiber
Traumatic injury to axons in white matter of the brain and spinal cord occurs primarily via tensile stretch. During injury, the stress and strain experienced at the tissue level is transferred to the microscopic axons. How this transfer occurs, and the primary constituents dictating this transfer must be better understood to develop more accurate multi-scale models of injury. Previous studies have characterized axon tortuosity and kinematic behavior in 2-dimensions (2-D), where axons have been modeled to exhibit non-affine (discrete), affine (composite-like), or switching behavior...
November 2015: Biomechanics and Modeling in Mechanobiology
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