Pulsatile flow of non-Newtonian fluids through arterial stenoses.

abstract：:Human and animal limbs can be modelled as a chain of segments connected at joints. For a static limb, the force exerted at the endpoint due to the force of a single muscle has been calculated. It turns out that there are marked differences in the action of mono- vs. biarticular muscles. Monoarticular muscles produce a...

journal_title：Journal of biomechanics

authors： Hof AL

更新日期：2001-08-01 00:00:00

abstract：:Local intracellular variations of cell mechanical properties, which are essential for vital cellular functions, have not been well characterized and are poorly understood. Here, we used results from our previous biomechanical imaging study to obtain relationships between intracellular shear modulus and prestress. We f...

journal_title：Journal of biomechanics

authors： Canović EP,Seidl DT,Barbone PE,Smith ML,Stamenović D

更新日期：2014-09-22 00:00:00

abstract：:Bone, a tri-phase composite, consists of nano-sized apatite minerals, an organic component, and water. Heat-treated bovine cortical bone has been proposed as a candidate for void-filling bone substitute. However, the toughness of heat-treated bone is not yet fully studied. Fracture toughness (K(c)) and work of fractur...

journal_title：Journal of biomechanics

authors： Yan J,Daga A,Kumar R,Mecholsky JJ

更新日期：2008-01-01 00:00:00

abstract：:Although micromechanical finite-element models are being increasingly used to help interpret the results of bio-mechanical tests, there has not yet been a systematic study of the numerical errors and uncertainties that occur with these methods. In this work, finite-element models of human L1 vertebra have been used to...

journal_title：Journal of biomechanics

authors： Ladd AJ,Kinney JH

更新日期：1998-10-01 00:00:00

abstract：:The slit arteriotomy for end-to-side arterial microanastomosis is a technique used to revascularize free flaps in reconstructive surgery. Does a slit open to a width sufficient for blood supply? How is the slit opening affected by factors, such as arterial wall thickness and material stiffness? To answer these questio...

journal_title：Journal of biomechanics

authors： Gu H,Chua A,Tan BK,Chew Hung K

更新日期：2006-01-01 00:00:00

abstract：:In high knee flexion, contact between the posterior thigh and calf is expected to decrease forces on tibiofemoral contact surfaces, therefore, thigh-calf contact needs to be thoroughly characterized to model its effect. This study measured knee angles and intersegmental contact parameters in fifty-eight young healthy ...

journal_title：Journal of biomechanics

authors： Kingston DC,Acker SM

更新日期：2018-01-23 00:00:00

abstract：:The purpose of this study was to apply the Floating Axis analysis technique to the elbow joint, and to verify its ability to quantify clinically relevant radiohumeral translation in vitro using an electromagnetic tracking device. Of particular interest was the ability to quantify changes in anterior-posterior radial h...

journal_title：Journal of biomechanics

authors： Dunning CE,Duck TR,King GJ,Johnson JA

更新日期：2003-08-01 00:00:00

abstract：:Here we present a study on the impact of assumptions on image-based hemodynamic simulations of healthy carotid bifurcations. In particular, we evaluate to which extent assumptions on blood rheology influence bulk flow features, driven by the fact that few studies have provided adequate insights into the influence of a...

journal_title：Journal of biomechanics

authors： Morbiducci U,Gallo D,Massai D,Ponzini R,Deriu MA,Antiga L,Redaelli A,Montevecchi FM

更新日期：2011-09-02 00:00:00

abstract：:Many analytical biomechanics methods require extensive three-dimensional descriptions of anatomical geometry. In particular, researchers requiring the three-dimensional coordinates of specific boney landmarks (e.g. tendon and ligament attachments) are often forced to extrapolate such measurements from an experimental ...

journal_title：Journal of biomechanics

authors： Sommer HJ 3rd,Miller NR,Pijanowski GJ

更新日期：1982-01-01 00:00:00

abstract：:Movement variability has become an important field of research and has been studied to gain a better understanding of the neuro-muscular control of human movements. In addition to studies investigating "amplitude variability" there are a growing number of studies assessing the "temporal variability" in movements by ap...

journal_title：Journal of biomechanics

authors： Federolf P,Tecante K,Nigg B

更新日期：2012-04-30 00:00:00

abstract：:Lumbar interbody fusion is currently the gold standard in treating patients with disc degeneration or segmental instability. Despite it having been used for several decades, the non-union rate remains high. A failed fusion is frequently attributed to an inadequate mechanical environment after instrumentation. Finite e...

journal_title：Journal of biomechanics

authors： Hsu HW,Bashkuev M,Pumberger M,Schmidt H

更新日期：2018-04-27 00:00:00

abstract：:The fluid-structure interaction and energy transfer from respiratory airflow to self-sustained vocal fold oscillation continues to be a topic of interest in vocal fold research. Vocal fold vibration is driven by pressures on the vocal fold surface, which are determined by the shape of the glottis and the contact betwe...

journal_title：Journal of biomechanics

authors： Smith SL,Titze IR

更新日期：2018-05-17 00:00:00

abstract：:Time-domain-based one-dimensional wave propagation models of the arterial system are preferable over one-dimensional wave propagation models in the frequency domain since the latter neglect the non-linear convection forces present in the physiological situation, especially when the vessel is tapered. Moreover, one-dim...

journal_title：Journal of biomechanics

authors： Bessems D,Giannopapa CG,Rutten MC,van de Vosse FN

更新日期：2008-01-01 00:00:00

abstract：:The mechanical properties of vertebrate erythrocytes depend on their cytoskeletal protein networks. Membrane skeleton proteins spectrin and protein 4.1 (4.1R) cross-link with actin to maintain membrane stability under mechanical stress. Phosphorylation of 4.1R alters the affinity of 4.1R for spectrin-actin binding and...

journal_title：Journal of biomechanics

authors： Tang F,Lei X,Xiong Y,Wang R,Mao J,Wang X

更新日期：2014-10-17 00:00:00

abstract：:A new transducer was developed for in situ measurement of the force vector in a complex muscle. The transducer measures the magnitude, and the line of action of a force in a single plane. The dynamic range of the transducer is 0-5 N. This range includes the small forces developed by an active motor unit and the relati...

journal_title：Journal of biomechanics

authors： Turkawski SJ,van Ruijven LJ,van Kuyen M,Schreurs AW,Weijs WA

更新日期：1996-11-01 00:00:00

abstract：:An apparatus was designed for mechanical compression of cultured articular cartilage explants with acylindrical plain-ended loading head (diameter 2-5 mm) driven by a stepping motor. A load cell under the culture dish was applied for feedback regulation utilizing a microprocessor-based control unit. The operating prog...

journal_title：Journal of biomechanics

authors： Parkkinen JJ,Lammi MJ,Karjalainen S,Laakkonen J,Hyvärinen E,Tiihonen A,Helminen HJ,Tammi M

更新日期：1989-01-01 00:00:00

abstract：:In this study, we tested the compressive stress relaxation behaviors of the mandibular condylar and temporal cartilages in the porcine temporomandibular joint (TMJ). The aim was to determine the quantitative and qualitative similarities and differences of compressive stress relaxation behaviors between the two cartila...

journal_title：Journal of biomechanics

authors： Tanaka E,Pelayo F,Kim N,Lamela MJ,Kawai N,Fernández-Canteli A

更新日期：2014-05-07 00:00:00

abstract：:Wheelchair-dependent subjects often adopt a passive sitting posture and suffer from sitting acquired pressure ulcers (PU) that mainly occur when high buttock pressures sustain for a longer period of time. Body posture directly influences seating load and proper postural change is therefore essential. Many subjects can...

journal_title：Journal of biomechanics

authors： van Geffen P,Reenalda J,Veltink PH,Koopman BF

更新日期：2008-07-19 00:00:00

abstract：:Experimental data in human movement science commonly consist of repeated measurements under comparable conditions. One can face the question how to identify a single trial, a set of trials, or erroneous trials from the entire data set. This study presents and evaluates a Selection Method for a Representative Trial (SM...

journal_title：Journal of biomechanics

authors： Schweizer K,Cattin PC,Brunner R,Müller B,Huber C,Romkes J

更新日期：2012-08-31 00:00:00

abstract：:Computer simulation of human masticatory dynamics requires specification of the jaw's mass properties. These are difficult to estimate, especially in living subjects. Here, we used calibrated computed tomography (CT) to determine the properties of eight osseous jaw specimens with adult dentitions. When the CT numbers ...

journal_title：Journal of biomechanics

authors： Zhang F,Peck CC,Hannam AG

更新日期：2002-07-01 00:00:00

abstract：:In presence of aortic stenosis, a jet is produced downstream of the aortic valve annulus during systole. The vena contracta corresponds to the location where the cross-sectional area of the flow jet is minimal. The maximal transvalvular pressure gradient (TPG(max)) is the difference between the static pressure in the ...

journal_title：Journal of biomechanics

authors： Garcia D,Kadem L,Savéry D,Pibarot P,Durand LG

更新日期：2006-01-01 00:00:00

abstract：:Pre-clinical tests are often performed to screen new implant designs, surgical techniques, and cement formulations. In this work, we developed a technique to simulate the cement-bone morphology found with postmortem retrieved cemented hip replacements. With this technique, a soy wax barrier is created along the endost...

journal_title：Journal of biomechanics

authors： Cherukuri AR,Miller MA,Race A,Izant TH,Mann KA

更新日期：2010-10-19 00:00:00

abstract：:The effect of tendons viscoelastic stiffness on the dynamic response of the cat's tibialis anterior muscle under isometric conditions was determined. It was shown that the dynamic response model of the muscle derived under sinusoidal contraction-relaxation in the range of 20-80% of its maximal isometric tension was no...

journal_title：Journal of biomechanics

authors： Baratta R,Solomonow M

更新日期：1991-01-01 00:00:00

abstract：:In quadrupeds, there have been limited comparisons of gait timing events detection (e.g., paw contact, PC and paw-off, PO) determined from kinematics and forceplates. The goal of this study was to investigate the effect of different slopes (0, -27, +27°), recovery times after ankle extensor nerve injury and repair (2,...

journal_title：Journal of biomechanics

authors： Pantall A,Gregor RJ,Prilutsky BI

更新日期：2012-05-11 00:00:00

abstract：:Linking human mechanical work to physiological work for the purpose of developing a model of physical fatigue is a complex problem that cannot be solved easily by conventional biomechanical analysis. The purpose of the study was to determine if two nonlinear analysis methods can address the fundamental issue of utiliz...

journal_title：Journal of biomechanics

authors： Schiffman JM,Chelidze D,Adams A,Segala DB,Hasselquist L

更新日期：2009-09-18 00:00:00

abstract：:Clinical decisions on interventions to improve function in children with cerebral palsy (CP) are based, in part, on hypothesized interactions amongst physical signs of CP and functional deficits. However, a knowledge gap exists regarding associations between spasticity and gait function. This study quantified associat...

journal_title：Journal of biomechanics

authors： Bowal N,Nettel-Aguirre A,Ursulak G,Condliffe E,Robu I,Goldstein S,Emery C,Ronsky JL,Kuntze G

更新日期：2021-01-16 00:00:00

abstract：:Continuum finite element (FE) models of bones have become a standard pre-clinical tool to estimate bone strength. These models are usually based on clinical CT scans and material properties assigned are chosen as isotropic based only on the density distribution. It has been shown, however, that trabecular bone elastic...

journal_title：Journal of biomechanics

authors： Hazrati Marangalou J,Ito K,Cataldi M,Taddei F,van Rietbergen B

更新日期：2013-09-27 00:00:00

abstract：:Patello-femoral disorders are often caused by changes of patello-femoral and/or tibio-femoral kinematics. However, until now there has been no quantitative in vivo technique, that is able to obtain 3D kinematics and contact areas of all knee compartments simultaneously on a non-invasive basis. The aim of this study wa...

journal_title：Journal of biomechanics

authors： von Eisenhart-Rothe R,Siebert M,Bringmann C,Vogl T,Englmeier KH,Graichen H

更新日期：2004-06-01 00:00:00

abstract：:The contribution of this paper is a bivariate optimization of cycling performance. Relying on a biomechanical model of the lower limb, a cost function derived from the joint moments developed during cycling is computed. At constant average power, both pedalling rate (i.e. rpm) and crank arm length are systematically v...

journal_title：Journal of biomechanics

authors： Hull ML,Gonzalez H

更新日期：1988-01-01 00:00:00

abstract：:Chondrocytes in articular cartilage are regularly subjected to compression and recovery due to dynamic loading of the joint. Previous studies have investigated the elastic and viscoelastic properties of chondrocytes using micropipette aspiration techniques, but in order to calculate cell properties, these studies have...

journal_title：Journal of biomechanics

authors： Trickey WR,Baaijens FP,Laursen TA,Alexopoulos LG,Guilak F

更新日期：2006-01-01 00:00:00