Micropipette aspiration method for characterizing biological materials with surface energy.

abstract：:Patients with knee osteoarthritis often present with signs of mixed tibiofemoral and patellofemoral joint disease. It has been suggested that altered frontal and transverse plane knee joint mechanics play a key role in compartment-specific patterns of knee osteoarthritis, but in-vivo evidence in support of this premis...

journal_title：Journal of biomechanics

authors： Farrokhi S,Meholic B,Chuang WN,Gustafson JA,Fitzgerald GK,Tashman S

更新日期：2015-07-16 00:00:00

abstract：:Muscle activity has previously been suggested to minimize soft-tissue resonance which occurs at heel-strike during walking and running. If this concept were true then the greatest vibration damping would occur when the input force was closest to the resonant frequency of the soft-tissues at heel-strike. However, this ...

journal_title：Journal of biomechanics

authors： Wakeling JM,Liphardt AM,Nigg BM

更新日期：2003-12-01 00:00:00

abstract：:Disc hydration is controlled by fluid imbibition and exudation and hence by applied load magnitude and history, internal osmotic pressure and disc conditions. It affects both the internal load distribution and external load-bearing of a disc while variations therein give rise to the disc time-dependent characteristics...

journal_title：Journal of biomechanics

authors： Schmidt H,Shirazi-Adl A,Schilling C,Dreischarf M

更新日期：2016-06-14 00:00:00

abstract：:Stress relaxation experiments were performed on specimens from a human intervertebral disc. Specimens were made from the nucleus pulposus and from the external lamellae of the anulus fibrosus in two different orientations. Tests were run with varying moisture content so as to develop a relaxation master curve. A model...

journal_title：Journal of biomechanics

authors： Panagiotacopulos ND,Pope MH,Krag MH,Bloch R

更新日期：1987-01-01 00:00:00

abstract：:Valgus moments on the knee joint during single-leg landing have been suggested as a risk factor for anterior cruciate ligament (ACL) injury. The purpose of this study was to test the influence of isolated valgus moment on ACL strain during single-leg landing. Physiologic levels of valgus moments from an in vivo study ...

journal_title：Journal of biomechanics

authors： Shin CS,Chaudhari AM,Andriacchi TP

更新日期：2009-02-09 00:00:00

abstract：:In inverse dynamics computations, the accuracy of the solution strongly depends on the accuracy of the input data. In particular, estimated joint moments are highly sensitive to uncertainties in acceleration data. The aim of the present work was to improve classical inverse dynamics computations by providing an accura...

journal_title：Journal of biomechanics

authors： Cahouët V,Luc M,David A

更新日期：2002-11-01 00:00:00

abstract：:Plexiform bovine bone samples are repeatedly loaded in tension along their longitudinal axis. In order to induce damage in the bone tissue, bone samples are loaded past their yield point. Half of the bone samples from the damaged group were stored in saline to allow for viscoelastic recovery while the others were deca...

journal_title：Journal of biomechanics

authors： Kotha SP,Guzelsu N

更新日期：2003-11-01 00:00:00

abstract：:An experimental study was carried out on asymmetrical abdominal aortic aneurysm (AAA) to analyse the physiological flows involved. Velocity measurements were performed using particle image velocimetry. Resting and exercise flow rates were investigated in models with rigid and compliant walls to assess the parameters a...

journal_title：Journal of biomechanics

authors： Deplano V,Knapp Y,Bertrand E,Gaillard E

更新日期：2007-01-01 00:00:00

abstract：:The damping mechanisms that are operational in the heel pad during the impact phase of locomotion have the important function to protect the musculo-skeletal system from injuries. How this is achieved is still not fully understood, as is for instance illustrated by the 'heel pad paradox', the observation that in vivo ...

journal_title：Journal of biomechanics

authors： Weijers RE,Kessels AG,Kemerink GJ

更新日期：2005-12-01 00:00:00

abstract：:The forces and moments acting at the hip joint influence the long-term stability of the fixation of endoprostheses and the course of coxarthrosis. These loads may depend on the kind of footwear and the walking or running style. These factors were investigated in a patient with instrumented hip implants. He wore differ...

journal_title：Journal of biomechanics

authors： Bergmann G,Kniggendorf H,Graichen F,Rohlmann A

更新日期：1995-07-01 00:00:00

abstract：:Patient specific quantitative CT (QCT) imaging data together with the finite element (FE) method may provide an accurate prediction of a patient's femoral strength and fracture risk. Although numerous FE models investigating femoral fracture strength have been published, there is little consent on the effect of bounda...

journal_title：Journal of biomechanics

authors： Haider IT,Speirs AD,Frei H

更新日期：2013-09-03 00:00:00

abstract：:Elderly vertebrae frequently develop an "anterior wedge" deformity as a result of fracture and creep mechanisms. Injecting cement into a damaged vertebral body (vertebroplasty) is known to help restore its shape and stiffness. We now hypothesise that vertebroplasty is also effective in reducing subsequent creep deform...

journal_title：Journal of biomechanics

authors： Luo J,Pollintine P,Annesley-Williams DJ,Dolan P,Adams MA

更新日期：2016-04-11 00:00:00

abstract：:Several motion capture methods exist for predicting hip joint centers (HJC). These methods include regression models, functional joints, and projections from greater trochanters. While regression and functional methods have been compared to imaging techniques, the TROCH method has not been previously validated. The pu...

journal_title：Journal of biomechanics

authors： Bennett HJ,Shen G,Weinhandl JT,Zhang S

更新日期：2016-09-06 00:00:00

abstract：:Relatively high rates of loosening and implant failure have been reported after total ankle arthroplasty. Abnormal kinematics and incongruency of the articular surface may cause increased contact pressure and rotational torque applied to the implant, leading to loosening and implant failure. We measured in vivo kinema...

journal_title：Journal of biomechanics

authors： Yamaguchi S,Tanaka Y,Banks S,Kosugi S,Sasho T,Takahashi K,Takakura Y

更新日期：2012-08-09 00:00:00

abstract：:This study proposed a revision to the Rosenstein's method of numerical calculation of the largest Lyapunov exponent (LyE) to make it more robust to noise. To this aim, the effect of increasing number of initial neighboring points on the LyE value was investigated and compared to values obtained by filtering the time s...

journal_title：Journal of biomechanics

authors： Mehdizadeh S

更新日期：2019-03-06 00:00:00

abstract：:In order to move the finger the tendon force must overcome the gliding resistance of the tendon as well as the forces to move the joints, finger inertias, and external load. These sources, combined, make up the work of flexion (WOF) which has been experimentally used to evaluate the finger function. In this study, we ...

journal_title：Journal of biomechanics

authors： Zhao C,Amadio PC,Berglund L,Zobitz ME,An KN

更新日期：2003-02-01 00:00:00

abstract：:The cerebral ischemia and reperfusion rat model was employed in this experiment to study the rheological properties (i.e. viscosity, hematocrit, red blood cell deformability and thixotropic properties) of whole blood. The results of this study show that a significant relation exists between the duration of cerebral is...

journal_title：Journal of biomechanics

authors： Kuke D,Donghua L,Xiaoyan S,Yanjun Z

更新日期：2001-02-01 00:00:00

abstract：:The feasibility of determining biphasic material properties using regression models was investigated. A transversely isotropic poroelastic finite element model of stress relaxation was developed and validated against known results. This model was then used to simulate load intensity for a wide range of material proper...

journal_title：Journal of biomechanics

authors： Chung CY,Mansour JM

更新日期：2013-07-26 00:00:00

abstract：:This paper aims to improve current understanding of flow structure and particle deposition in asthmatic human airways. A single, symmetric airway bifurcation, corresponding to generations 10-11 of Weibel's model, is investigated through validated numerical simulations. The parent airway segment is modelled as a smooth...

journal_title：Journal of biomechanics

authors： Zhang H,Papadakis G

更新日期：2010-09-17 00:00:00

abstract：:The goal of this work consists in a quantitative analysis and constitutive modelling of ageing processes associated to plaque formation in mice arteries. Reliable information on the characteristic evolution of pressure-stretch curves due to the ageing effects is extracted from previous inflation test experiments. Furt...

journal_title：Journal of biomechanics

authors： Waffenschmidt T,Cilla M,Sáez P,Pérez MM,Martínez MA,Menzel A,Peña E

更新日期：2016-08-16 00:00:00

abstract：:Stress, strain and modulus are regularly used to characterize material properties of tissue samples. However, when comparing results from different studies it is evident the reported material properties, particularly failure strains, vary hugely. The aim of our study was to characterize how and why specimen length and...

journal_title：Journal of biomechanics

authors： Legerlotz K,Riley GP,Screen HR

更新日期：2010-08-26 00:00:00

abstract：:The three-dimensional trajectory of the body's centre of mass (COM) is useful to determine a number of biomechanical outcomes in running research. Previous studies have used the COM to calculate measures such as overstriding, vertical stiffness, and vertical oscillation. The COM is traditionally computed using the seg...

journal_title：Journal of biomechanics

authors： Napier C,Jiang X,MacLean CL,Menon C,Hunt MA

更新日期：2020-07-17 00:00:00

abstract：:External perturbations during pushing tasks have been suggested to be a risk factor for low-back symptoms. An experiment was designed to investigate whether self-induced and externally induced sudden stops while pushing a high inertia cart influence trunk motions, and how flexor and extensor muscles counteract these p...

journal_title：Journal of biomechanics

authors： Lee YJ,Hoozemans MJ,van Dieën JH

更新日期：2011-01-04 00:00:00

abstract：:We evaluated whether the use of cartilage thickness measurement would improve the ability of the arthroscopic indentation technique to estimate the intrinsic stiffness of articular cartilage. First, cartilage thickness and ultrasound reflection from the surface of bovine humeral head were registered in situ using a hi...

journal_title：Journal of biomechanics

authors： Töyräs J,Lyyra-Laitinen T,Niinimäki M,Lindgren R,Nieminen MT,Kiviranta I,Jurvelin JS

更新日期：2001-02-01 00:00:00

abstract：:Strain shielding, a mechanical effect occurring in structures combining stiff with more flexible materials, is considered to lead to a reduction of density in bone surrounding the implant. This effect can be related to the weakness of the implant fixation, which can promote implant loosening. Several studies describe ...

journal_title：Journal of biomechanics

authors： Meireles S,Completo A,António Simões J,Flores P

更新日期：2010-02-10 00:00:00

abstract：:A fast (0.1 mm steps within 2 ms), strong (40 N continuously) and accurate (resolution 0.002 N and 1.0 micron) muscle ergometer was developed to test dynamic and static properties of mammalian muscle. Both for twitches and for tetani isometric, isokinetic and isotonic contractions can be measured accurately. Force-vel...

journal_title：Journal of biomechanics

authors： Woittiez RD,Brand C,de Haan A,Hollander AP,Huijing PA,van der Tak R,Rijnsburger WH

更新日期：1987-01-01 00:00:00

abstract：:Three-dimensional gait analysis (3D-GA) is commonly used to answer clinical questions of the form "which joints and what variables are most affected during when". When studying high-dimensional datasets, traditional dimension reduction methods (e.g. principal components analysis) require "data flattening", which may m...

journal_title：Journal of biomechanics

authors： Liew BXW,Morris S,Netto K

更新日期：2019-06-11 00:00:00

abstract：:Fragility fractures are a result of alterations in bone quantity, tissue properties, applied loads, or a combination of these factors. The current study addresses the contribution of cortical bone tissue properties to skeletal fragility by characterizing the shear damage accumulation processes which occur during torsi...

journal_title：Journal of biomechanics

authors： Jepsen KJ,Davy DT,Krzypow DJ

更新日期：1999-03-01 00:00:00

abstract：:Two questions were addressed in this study: (1) how much strain of the superficial aponeurosis of the human medial gastrocnemius muscle (MG) was obtained during voluntary isometric contractions in vivo, (2) whether there existed inhomogeneity of the strain along the superficial aponeurosis. Seven male subjects, whose ...

journal_title：Journal of biomechanics

authors： Muramatsu T,Muraoka T,Kawakami Y,Fukunaga T

更新日期：2002-02-01 00:00:00

abstract：:The purpose of this study was to devise a method for the tensile testing of the organic component of demineralised bone. It was hoped that the method could be applied to determine whether an observed reduction in the strength of bone in copper-deficient rats could be attributed to a reduction in the cross-linking of c...

journal_title：Journal of biomechanics

authors： Jonas J,Burns J,Abel EW,Cresswell MJ,Strain JJ,Paterson CR

更新日期：1993-03-01 00:00:00