A musculoskeletal model of the human lower extremity: the effect of muscle, tendon, and moment arm on the moment-angle relationship of musculotendon actuators at the hip, knee, and ankle.

abstract：:Creep is a time-dependent viscoelastic deformation observed under a constant prolonged load. It has been indicated that progressive vertebral deformation due to creep may increase the risk of vertebral fracture in the long-term. The objective of this study was to examine the relationships of creep with trabecular arch...

journal_title：Journal of biomechanics

authors： Kim DG,Shertok D,Ching Tee B,Yeni YN

更新日期：2011-06-03 00:00:00

abstract：:The objectives of this study were to measure the active and passive force-length (F-L) relationships in type-I human single muscle fibers and to compare the results to predictions from the sliding filament model (the "standard model"). We measured isometric forces in chemically skinned fibers at different sarcomere le...

journal_title：Journal of biomechanics

authors： Gollapudi SK,Lin DC

更新日期：2009-09-18 00:00:00

abstract：:The peroneus longus (PL) is a rearfoot evertor, important in frontal plane foot motion. Studying PL function has been limited by previous electromyography (EMG) studies reporting poor between-day reliability. Due to its close proximity to adjacent muscles, EMG measures of PL may be susceptible to crosstalk, thus corre...

journal_title：Journal of biomechanics

authors： Reeves J,Jones R,Liu A,Bent L,Nester C

更新日期：2019-03-27 00:00:00

abstract：:Ultrasound imaging has recently been used to distinguish the length changes of muscle fascicles from those of the whole muscle tendon complex during real life movements. The complicated three-dimensional architecture of pennate muscles can however cause heterogeneity in the length changes along the length of a muscle....

journal_title：Journal of biomechanics

authors： Lichtwark GA,Bougoulias K,Wilson AM

更新日期：2007-01-01 00:00:00

abstract：:Among the most common causes of upper extremity fracture is a fall on the outstretched hand. Yet few data exist on the biomechanical factors which affect injury risk during this event. In this study, we measured impact forces during low-height (0-5 cm), forward falls onto the outstretched hand, and found that these ar...

journal_title：Journal of biomechanics

authors： Chiu J,Robinovitch SN

更新日期：1998-12-01 00:00:00

abstract：:Skeletal muscle is a very dynamic tissue, thus accurate quantification of skeletal muscle stiffness throughout its functional range is crucial to improve the physical functioning and independence following pathology. Shear wave elastography (SWE) is an ultrasound-based technique that characterizes tissue mechanical pr...

journal_title：Journal of biomechanics

authors： Eby SF,Song P,Chen S,Chen Q,Greenleaf JF,An KN

更新日期：2013-09-27 00:00:00

abstract：:The performance criterion in maximum vertical jumping has typically been assumed to simply raise the center of mass as high as possible. In many sporting activities minimizing movement time during the jump is likely also critical to successful performance. The purpose of this study was to examine maximum height jumps ...

journal_title：Journal of biomechanics

authors： Domire ZJ,Challis JH

更新日期：2015-08-20 00:00:00

abstract：:A design is presented for a bicycle pedal dynamometer that measures both normal and tangential forces (i.e. driving forces). Mechanical decoupling is used to reduce the cross-sensitivity of the dynamometer to loads doing no work to propel the bicycle. This obviates the need to measure all six loads for accurate data r...

journal_title：Journal of biomechanics

authors： Newmiller J,Hull ML,Zajac FE

更新日期：1988-01-01 00:00:00

abstract：:Understanding microstructural changes that occur in skin subjected to repetitive mechanical stress is crucial towards the development of therapies to enhance skin adaptation and load tolerance in patients at risk of skin breakdown (e.g. prosthesis users, wheelchair users). To determine if collagen fibril diameter, col...

journal_title：Journal of biomechanics

authors： Sanders JE,Goldstein BS

更新日期：2001-12-01 00:00:00

abstract：:The biomechanical characteristics of bone tissue and its cells under mechanical stress are significant for bone biomechanics research, but the mechanism of mechanotransduction is still unknown. It has been established that the actin cytoskeleton of osteoblasts plays an important role in this process. However, the stru...

journal_title：Journal of biomechanics

authors： Fu Q,Wu C,Shen Y,Zheng S,Chen R

更新日期：2008-11-14 00:00:00

abstract：:The study was designed to examine the effects of partial fatigue on specific mechanical parameters which characterise human tendons in vitro. Specimens prepared from 12 intact Extensor digitorum longus tendons of the foot were subjected to partial fatigue, equivalent to 25% of the median fatigue life, by a cyclic squa...

journal_title：Journal of biomechanics

authors： Schechtman H,Bader DL

更新日期：2002-03-01 00:00:00

abstract：:A general theory is described for deriving the mechanical effect of muscles with large attachment sites. In a cadaver experiment the complete attachment sites and bundle distribution of 16 muscles of the shoulder mechanism were recorded. These data were used to calculate the mechanical effect, i.e. the resulting force...

journal_title：Journal of biomechanics

authors： Van der Helm FC,Veenbaas R

更新日期：1991-01-01 00:00:00

abstract：:Many clinical studies suggest that local blood flow patterns are involved in the location and development of atherosclerosis. In coronary diseases, this assumption should be corroborated by quantitative information on local hemodynamic parameters such as pressure, velocity or wall shear stress. Nowadays, computational...

journal_title：Journal of biomechanics

authors： Berthier B,Bouzerar R,Legallais C

更新日期：2002-10-01 00:00:00

abstract：:The patchy distribution of atherosclerosis within arteries is widely attributed to local variation in haemodynamic wall shear stress (WSS). A recently-introduced metric, the transverse wall shear stress (transWSS), which is the average over the cardiac cycle of WSS components perpendicular to the temporal mean WSS vec...

journal_title：Journal of biomechanics

authors： Mohamied Y,Sherwin SJ,Weinberg PD

更新日期：2017-01-04 00:00:00

abstract：:We developed a computational model of lung parenchyma, which is comprised of individual alveolar chamber models. Each alveolus is modeled by a truncated octahedron. Considering the force balance between the elastin and collagen fibers laying on the alveolar membrane and the pressures acting on the membrane, we compute...

journal_title：Journal of biomechanics

authors： Fujioka H,Halpern D,Gaver DP 3rd

更新日期：2013-01-18 00:00:00

abstract：:In this paper, we measured the maximum isometric force at the hand in eight directions in the horizontal plane and at five positions in the workplace. These endpoint forces were the result of shoulder horizontal adduction/abduction and elbow flexion/extension torques. We found that the normalized maximum forces of all...

journal_title：Journal of biomechanics

authors： Jan Nijhof E,Gabriel DA

更新日期：2006-01-01 00:00:00

abstract：:The contact nature of American football has made head acceleration exposure a concern. We aimed to quantify the head kinematics associated with direct helmet contact and inertial head loading events in collegiate-level American football. A cohort of collegiate-level players were equipped with instrumented mouthguards ...

journal_title：Journal of biomechanics

authors： Tierney GJ,Kuo C,Wu L,Weaving D,Camarillo D

更新日期：2020-09-18 00:00:00

abstract：:Hamstring muscle strain injury is one of the most commonly seen injuries in sports such as track and field, soccer, football, and rugby. The purpose of this study was to advance our understanding of the mechanisms of hamstring muscle strain injuries during over ground sprinting by investigating hamstring muscle-tendon...

journal_title：Journal of biomechanics

authors： Yu B,Queen RM,Abbey AN,Liu Y,Moorman CT,Garrett WE

更新日期：2008-11-14 00:00:00

abstract：:Strength, or maximum joint torque, is a fundamental factor governing human movement, and is regularly assessed for clinical and rehabilitative purposes as well as for research into human performance. This study aimed to identify the most appropriate protocol for fitting a maximum voluntary torque function to experimen...

journal_title：Journal of biomechanics

authors： Forrester SE,Yeadon MR,King MA,Pain MT

更新日期：2011-03-15 00:00:00

abstract：:The ability to monitor the healing of bone fractures is crucially important in their treatment. The aim of the present study was to develop and validate an objective method for monitoring fracture healing based on bone vibrational response. An analytic model was formulated, with which the mechanical parameters at the ...

journal_title：Journal of biomechanics

authors： Nikiforidis G,Bezerianos A,Dimarogonas A,Sutherland C

更新日期：1990-01-01 00:00:00

abstract：:Musculoskeletal modeling requires information on muscle parameters such as cross-sectional area (CSA) and moment arms. A variety of previous studies have reported muscle parameters in the trunk based on in vivo imaging, but there remain gaps in the available data as well as limitations in the generalizability of such ...

journal_title：Journal of biomechanics

authors： Anderson DE,D'Agostino JM,Bruno AG,Manoharan RK,Bouxsein ML

更新日期：2012-01-03 00:00:00

abstract：:A new six-degree-of-freedom force transducer has been manufactured, with the sensitivity to measure forces in the range +/-100 N and moments of up to +/-5 Nm. The transducer incorporates two mechanical components: shear forces and bending moments are measured via a strain-gauged tubular section whilst axial forces are...

journal_title：Journal of biomechanics

authors： Fowler NK,Nicol AC

更新日期：1999-07-01 00:00:00

abstract：:A three-dimensional, mathematical model of the elbow and wrist joints, including 15 muscle units, 3 ligaments and 4 joint forces, has been developed. A new strain gauge transducer has been developed to measure functional grip forces. The device measures radial forces divided into six components and forces of up to 250...

journal_title：Journal of biomechanics

authors： Chadwick EK,Nicol AC

更新日期：2000-05-01 00:00:00

abstract：:Range of motion (ROM) of the thoracic spine has implications in patient discrimination for diagnostic purposes and in biomechanical models for predictions of spinal loads. Few previous studies have reported quite different thoracic ROMs. Total (T1-T12), lower (T5-T12) and upper (T1-T5) thoracic, lumbar (T12-S1), pelvi...

journal_title：Journal of biomechanics

authors： Hajibozorgi M,Arjmand N

更新日期：2016-04-11 00:00:00

abstract：:Knowledge of ligament fibre recruitment at the human ankle joint complex is a fundamental prerequisite for analysing mobility and stability. Previous experimental and modelling studies have shown that ankle motion must be guided by fibres within the calcaneofibular and tibiocalcaneal ligaments, which remain approximat...

journal_title：Journal of biomechanics

authors： Stagni R,Leardini A,Ensini A

更新日期：2004-12-01 00:00:00

abstract：:Falls pose a tremendous risk to those over 65 and most falls occur during locomotion. Older adults commonly walk slower, which many believe helps improve walking stability. While increased gait variability predicts future fall risk, increased variability is also caused by walking slower. Thus, we need to better unders...

journal_title：Journal of biomechanics

authors： Kang HG,Dingwell JB

更新日期：2008-10-20 00:00:00

abstract：:Sitting is often assumed to involve high loads on the spine as well as on implants for stabilising the spine. Loads on internal spinal fixation devices were therefore measured in ten patients sitting on several types of seats, including a stool, a stool with a padded wedge, a chair, a physiotherapy ball, a knee-stool,...

journal_title：Journal of biomechanics

authors： Rohlmann A,Arntz U,Graichen F,Bergmann G

更新日期：2001-08-01 00:00:00

abstract：:Spinal arthrodesis continues to expand in clinical indications and surgical practice. Despite a century of study, failure of bone formation or pseudarthrosis can occur in individual patients with debilitating clinical symptoms. Here we review biological and technical aspects of spinal fusion under active investigation...

journal_title：Journal of biomechanics

authors： Reid JJ,Johnson JS,Wang JC

更新日期：2011-01-11 00:00:00

abstract：:The healing of wounds is a complex process and the contraction of the resulting scar can have a negative impact on the neighbouring skin. A finite element model of skin simulating the contraction of a scar and deformation of the surrounding skin is presented. The skin is represented by an orthotropic-viscoelastic cons...

journal_title：Journal of biomechanics

authors： Flynn C,McCormack BA

更新日期：2008-01-01 00:00:00

abstract：:In this paper we introduce the concept of the functional (or equivalent) geometry of the knee, which is an attempt to reduce the natural knee with its complex geometry, frictional resistance and deformable cartilage into a two-dimensional joint comprising rigid femur and tibia in frictionless contact. An apparatus and...

journal_title：Journal of biomechanics

authors： Chan SC,Seedhom BB

更新日期：1999-01-01 00:00:00