Jet collisions and vortex reversal in the human left ventricle.

abstract：:The spring-loaded inverted pendulum (SLIP) model is a well established model for describing bouncy gaits like human running. The notion of spring-like leg behavior has led many researchers to compute the corresponding parameters, predominantly stiffness, in various experimental setups and in various ways. However, dif...

journal_title：Journal of biomechanics

authors： Ludwig C,Grimmer S,Seyfarth A,Maus HM

更新日期：2012-09-21 00:00:00

abstract：:Repeated loading of the fingertips has been postulated to contribute to tendon and nerve disorders at the wrist during activities associated with prolonged fingertip loading such as typing. To fully understand the pathomechanics of these soft tissue disorders, the role of the fingertip pulp in attenuating the applied ...

journal_title：Journal of biomechanics

authors： Serina ER,Mote CD Jr,Rempel D

更新日期：1997-10-01 00:00:00

abstract：:The methods of evaluation of mechanical energy economy during human movement based on the calculation of three different values of work (Wwb, Ww, Wn), corresponding to three hypothetical types of energy exchange, are subject to criticism. Only the value of work, Wwb, calculated under the assumption of energy transfers...

journal_title：Journal of biomechanics

authors： Aleshinsky SY

更新日期：1986-01-01 00:00:00

abstract：:Maxillary expansion treatment is a commonly used procedure by orthodontists to widen a patient's upper jaw. As this is typically performed in adolescent patients, the midpalatal suture, connective tissue adjoining the two maxilla halves, remains unfused. Studies that have investigated patient response to expansion tre...

journal_title：Journal of biomechanics

authors： Romanyk DL,Liu SS,Lipsett MG,Toogood RW,Lagravère MO,Major PW,Carey JP

更新日期：2013-06-21 00:00:00

abstract：:A technique is introduced for simultaneous measurements of the heel pad tissue deformation and the heel-ground contact stresses developing during the stance phase of gait. Subjects walked upon a gait platform integrating the contact pressure display optical method for plantar pressure measurements and a digital radiog...

journal_title：Journal of biomechanics

authors： Gefen A,Megido-Ravid M,Itzchak Y

更新日期：2001-12-01 00:00:00

abstract：:Overdistension of the urinary bladder, secondary to outlet obstruction, causes cellular changes in the bladder wall, including hypertrophy of the smooth muscle cells, which increase bladder mass. To investigate the effects of increased mass on the cystometrogram (CMG), we have developed two mathematical models. In the...

journal_title：Journal of biomechanics

authors： Damaser MS,Lehman SL

更新日期：1996-12-01 00:00:00

abstract：:Computational simulations of tissue differentiation have been able to capture the main aspects of tissue formation/regeneration observed in animal experiments-except for the considerable degree of variability reported. Understanding and modelling the source of this variability is crucial if computational tools are to ...

journal_title：Journal of biomechanics

authors： Khayyeri H,Checa S,Tägil M,Aspenberg P,Prendergast PJ

更新日期：2011-04-07 00:00:00

abstract：:An asymptotic analysis of a lubrication problem is presented for a model of articular cartilage and synovial fluid under the squeeze-film condition. This model is based upon the following constitutive assumptions: (1) articular cartilage is a linear porous-permeable biphasic material filled with a linearly viscous flu...

journal_title：Journal of biomechanics

authors： Hou JS,Mow VC,Lai WM,Holmes MH

更新日期：1992-03-01 00:00:00

abstract：:p6e fluid flow in the annular perfusion chamber of Baumgartner developed to study platelet vessel wall interaction was examined with laser-Doppler velocimetry. A laminar and stable flow with a Reynolds number of less than or equal to 50 was measured at flow rates up to 3 ml s-1. No turbulence was found. The wall shear...

journal_title：Journal of biomechanics

authors： Aarts PA,van Broek JA,Kuiken GD,Sixma JJ,Heethaar RM

更新日期：1984-01-01 00:00:00

abstract：:In this study, a theoretical framework for simulation of fracture of bone and bone-like materials is provided. An expanded cohesive zone model with thermodynamically consistent framework has been proposed and used to investigate the crack growth resistance of bone and bone-like materials. The reversible elastic deform...

journal_title：Journal of biomechanics

authors： An B,Zhao X,Arola D,Zhang D

更新日期：2014-07-18 00:00:00

abstract：:Osteoporosis is a widely spread disease with severe consequences for patients and high costs for health care systems. The disease is characterised by a loss of bone mass which induces a loss of mechanical performance and structural integrity. It was found that transverse trabeculae are thinned and perforated while ver...

journal_title：Journal of biomechanics

authors： Wolfram U,Schwen LO,Simon U,Rumpf M,Wilke HJ

更新日期：2009-09-18 00:00:00

abstract：:About one-third of older multiparous women are prone to stress urinary incontinence (SUI): unwanted urine loss during activities which suddenly raise intra-abdominal pressure. In this paper we describe and test a method for visualizing and analyzing the function of the urinary continence control system (CCS) under str...

journal_title：Journal of biomechanics

authors： Kim KJ,Ashton-Miller JA,Strohbehn K,DeLancey JO,Schultz AB

更新日期：1997-01-01 00:00:00

abstract：:An arterial graft with a corrugated cylindrical cross-section has been proposed as a partial solution to the problem of elastic stiffness mismatch between conventional grafts and arterial tissue (Trescony et al., 1994, US Patent 5,282, 847 (granted February 1 1994)). A two-dimensional ring theory model and a finite el...

journal_title：Journal of biomechanics

authors： Stump DM,Hart VG,Tuttle SL

更新日期：1998-08-01 00:00:00

abstract：:Accurate body segment parameter (BSP) information is required for dynamic analyses of motion and the current methods available for obtaining these BSPs have been criticized. The purpose of this study was to determine whether dual energy X-ray absorptiometry (DXA) could accurately measure the BSPs of scanned objects an...

journal_title：Journal of biomechanics

authors： Durkin JL,Dowling JJ,Andrews DM

更新日期：2002-12-01 00:00:00

abstract：:The process of adaptive bone remodeling can be described mathematically and simulated in a computer model, integrated with the finite element method. In the model discussed here, cortical and trabecular bone are described as continuous materials with variable density. The remodeling rule applied to simulate the remode...

journal_title：Journal of biomechanics

authors： Weinans H,Huiskes R,Grootenboer HJ

更新日期：1992-12-01 00:00:00

abstract：:Many research groups have studied fall impact mechanics to understand how fall severity can be reduced to prevent hip fractures. Yet, direct impact force measurements with force plates are restricted to a very limited repertoire of experimental falls. The purpose of this study was to develop a generic model for estima...

journal_title：Journal of biomechanics

authors： van der Zijden AM,Groen BE,Tanck E,Nienhuis B,Verdonschot N,Weerdesteyn V

更新日期：2017-03-21 00:00:00

abstract：:Although flow-diverting devices are promising treatment options for intracranial aneurysms, jailed side branches might occlude leading to insufficient blood supply. Especially differences in the local stent strut compression may have a drastic influence on subsequent endothelialization. To investigate the outcome of d...

journal_title：Journal of biomechanics

authors： Berg P,Iosif C,Ponsonnard S,Yardin C,Janiga G,Mounayer C

更新日期：2016-01-04 00:00:00

abstract：:Little information is available on the direction-dependency of shear behavior in mandibular condylar cartilage. Therefore, we tested the hypothesis that such a dependency of the dynamic shear properties is present in mandibular condylar cartilage. From each of 17 condyles, two cartilage-bone plugs were dissected and t...

journal_title：Journal of biomechanics

authors： Tanaka E,Iwabuchi Y,Rego EB,Koolstra JH,Yamano E,Hasegawa T,Kawazoe A,Kawai N,Tanne K

更新日期：2008-01-01 00:00:00

abstract：:The progression of liver fibrosis changes the biomechanical properties of liver tissue. This study characterized and compared different liver fibrosis stages in rats in terms of viscoelasticity. Three viscoelastic models, the Voigt, Maxwell, and Zener models, were applied to experimental data from rheometer tests and ...

journal_title：Journal of biomechanics

authors： Zhu Y,Chen X,Zhang X,Chen S,Shen Y,Song L

更新日期：2016-06-14 00:00:00

abstract：:The goal of this study is to elucidate whether mechanobiological factors, including mechanical loading patterns, presence of bone graft, and proximity to the periosteum, correlate to de novo tissue generation and healing in critical sized long bone defects, which are enveloped by periosteum in situ and are bridged at ...

journal_title：Journal of biomechanics

authors： Knothe UR,Dolejs S,Matthew Miller R,Knothe Tate ML

更新日期：2010-10-19 00:00:00

abstract：:The movements of the human jaw are controlled by the forces produced by the masticatory muscles. As the jaw moves, these muscles change in length and their force producing units, the sarcomeres, change in length simultaneously. The lengths and length changes of the sarcomeres are determinants for the forces they are a...

journal_title：Journal of biomechanics

authors： Koolstra JH,van Eijden TM

更新日期：1997-09-01 00:00:00

abstract：:As 3-dimensional (3D) motion-capture for clinical gait analysis continues to evolve, new methods must be developed to improve the detection of gait cycle events based on kinematic data. Recently, the application of principal component analysis (PCA) to gait data has shown promise in detecting important biomechanical f...

journal_title：Journal of biomechanics

authors： Osis ST,Hettinga BA,Leitch J,Ferber R

更新日期：2014-08-22 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：:This study examined the effect of friction between the hand and grip surface on a person's grip strategy and force generation capacity. Twelve young healthy adults performed power grip exertions on an instrumented vertical cylinder with the maximum and 50% of maximum efforts (far above the grip force required to hold ...

journal_title：Journal of biomechanics

authors： Enders LR,Seo NJ

更新日期：2011-05-17 00:00:00

abstract：:The aim of this study was to investigate whether elimination of multifidus muscle in rats causes intervertebral disc (IVD) degeneration similar to that found after IVD lesion. Data were obtained from 36 male Wistar rats randomly assigned to one of three groups: (i) IVD lesion, in which the L4/L5 IVD was stabbed; (ii) ...

journal_title：Journal of biomechanics

authors： Maas H,Noort W,Hodges PW,van Dieën J

更新日期：2018-03-21 00:00:00

abstract：:In Part II of this two paper sequence, pulsatile flow development past a tilting disc valve in a model human aorta has been studied using quantitative laser Doppler techniques. The valve was mounted in three different orientations with respect to the aortic root in this study. Under pulsatile flow, the region of flow ...

journal_title：Journal of biomechanics

authors： Chandran KB,Khalighi B,Chen CJ

更新日期：1985-01-01 00:00:00

abstract：:Heart valves induce flow disturbances which play a role in blood cell activation and damage, but questions of the magnitude and spatial distribution of fluid stresses (wall shear stress and turbulent stress) cannot be readily addressed with current experimental techniques. Therefore, a numerical simulation procedure f...

journal_title：Journal of biomechanics

authors： Huang ZJ,Merkle CL,Abdallah S,Tarbell JM

更新日期：1994-04-01 00:00:00

abstract：:During normal daily activity, muscle motor units (MUs) develop unfused tetanic contractions evoked by trains of motoneuronal firings at variable interpulse intervals (IPIs). The mechanical responses of a MU to successive impulses are not identical. The aim of this study was to develop a mathematical approach for the p...

journal_title：Journal of biomechanics

authors： Raikova R,Rusev R,Drzymała-Celichowska H,Krutki P,Aladjov H,Celichowski J

更新日期：2010-05-28 00:00:00

abstract：:Engineering of large articular cartilage tissue constructs remains a challenge as tissue growth is limited by nutrient diffusion. Here, a novel strategy is investigated, generating large constructs through the assembly of individually cultured, interlocking, smaller puzzle-shaped subunits. These constructs can be engi...

journal_title：Journal of biomechanics

authors： Nover AB,Jones BK,Yu WT,Donovan DS,Podolnick JD,Cook JL,Ateshian GA,Hung CT

更新日期：2016-03-21 00:00:00

abstract：:We have developed a laser-aligned measuring device to facilitate the measurement of linear hand dimensions. Our objective has been to make a simple, clinically applicable device for anthropometry of the hands in patients with arthritis in order to gauge the progression of hand deformities. The system provides an alter...

journal_title：Journal of biomechanics

authors： Highton J,Davidson P,Markham V

更新日期：2003-09-01 00:00:00