Influence of shoes and heel strike on the loading of the hip joint.

abstract：:The purpose of this study was to investigate whether athletic and nonathletic manual wheelchair users (MWU) display differences in kinetic and kinematic variables during daily wheelchair propulsion. Thirty-nine manual wheelchair users (athletic n = 25; nonathletic n = 14) propelled their own daily living wheelchair on...

journal_title：Journal of biomechanics

authors： Briley SJ,Vegter RJK,Tolfrey VL,Mason BS

更新日期：2020-05-07 00:00:00

abstract：:Bone is a dynamic tissue which, through the process of bone remodeling in the mature skeleton, renews itself during normal function and adapts to mechanical loads. It is, therefore, important to understand the effect of remodeling on the mechanical function of bone, as well as the effect of the inherent time lag in th...

journal_title：Journal of biomechanics

authors： Hazelwood SJ,Bruce Martin R,Rashid MM,Rodrigo JJ

更新日期：2001-03-01 00:00:00

abstract：:Orthopaedic management of femoral head osteonecrosis is a common clinical problem for which there presently is no good solution. Current animal models are inappropriate to study potential new solutions, since it has been difficult to replicate the natural history of structural collapse seen in the human disorder. Rece...

journal_title：Journal of biomechanics

authors： Reed KL,Brown TD,Conzemius MG

更新日期：2003-09-01 00:00:00

abstract：:The purpose of this paper is to investigate the theoretical basis for the pressure-distension behavior of the urinary bladder. A finite strain theory is developed for hollow spherical structures and it is shown that the Treloar model is a good prototype only for rubber balloons. The pressure-extension ratio relationsh...

journal_title：Journal of biomechanics

authors： Regnier CH,Kolsky H,Richardson PD,Ghoniem GM,Susset JG

更新日期：1983-01-01 00:00:00

abstract：:As a support to the tooth, the mechanical response of the periodontal ligament (PDL) is complex. Like other connective tissues, the PDL exhibits non-linear and time-dependent behavior. The viscoelasticity of the PDL plays a significant role in low and high loading rates. Little information, however, is available on th...

journal_title：Journal of biomechanics

authors： Oskui IZ,Hashemi A

更新日期：2016-03-21 00:00:00

abstract：:A series of 33 human femoral bones have been subjected to a four point bending test at high strain rates. Two different failure modes were recognized. A Y shaped fracture at the middle region induced by a pure bending moment yielded a zone of non-linearity at the load vs deformation curve and a higher bending force, m...

journal_title：Journal of biomechanics

authors： Martens M,van Audekercke R,de Meester P,Mulier JC

更新日期：1986-01-01 00:00:00

abstract：:The maintenance of steady contractions is required in many daily tasks. However, there is little understanding of how various lower limb configurations influence the ability to maintain force. The purpose of the current investigation was to examine the influence of joint angle on various lower-limb constant force cont...

journal_title：Journal of biomechanics

authors： Ofori E,Shim J,Sosnoff JJ

更新日期：2018-04-11 00:00:00

abstract：:For in vivo impact loadings administered under controlled initial conditions, it was hypothesized that larger initial knee angles (IKA) and softer impacting interfaces would reduce impact loading and initial leg stiffness. A human pendulum was used to deliver controlled impacts to the right foot of 21 subjects for thr...

journal_title：Journal of biomechanics

authors： Lafortune MA,Hennig EM,Lake MJ

更新日期：1996-12-01 00:00:00

abstract：:There is a paucity of data in the literature on the restraining effects of the glenohumeral (GH) ligaments; cadaveric testing is one of the best methods for determining the function of these types of tissues. The aim of this work was to commission a custom-made six degrees of freedom (dof) joint loading apparatus and ...

journal_title：Journal of biomechanics

authors： Southgate DF,Hill AM,Alexander S,Wallace AL,Hansen UN,Bull AM

更新日期：2009-06-19 00:00:00

abstract：:The paper defines the term coordination interval (CI), suggesting that it should replace the term electromechanical delay (EMD), if this parameter is determined in vivo for a muscle functioning in a biomechanical system with considerable mobility, but not in a kinematic pair with one degree of rotational freedom (DOF)...

journal_title：Journal of biomechanics

authors： Kornecki S,Zschorlich V

更新日期：1994-02-01 00:00:00

abstract：:The measurement of relative motion between two moving bones is commonly accomplished for in vitro studies by attaching to each bone a series of either passive or active markers in a fixed orientation to create a rigid body (RB). This work determined the accuracy of motion between two RBs using an Optotrak optical moti...

journal_title：Journal of biomechanics

authors： Maletsky LP,Sun J,Morton NA

更新日期：2007-01-01 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：:Computational models have the potential to provide precise estimates of stresses and strains associated with sites of coronary plaque rupture. However, lack of adequate mathematical description of diseased human vessel wall mechanical properties is hindering computational accuracy. The goal of this study is to charact...

journal_title：Journal of biomechanics

authors： Kural MH,Cai M,Tang D,Gwyther T,Zheng J,Billiar KL

更新日期：2012-03-15 00:00:00

abstract：:Tripping over obstacles is the most frequently mentioned causes of falls. Thus, this study was performed to test the hypotheses that when crossing obstacles, toe-obstacle clearance and the three-dimensional motions and moments at the hip, knee, and ankle of the trailing limb (limb crossing the obstacle last) increase ...

journal_title：Journal of biomechanics

authors： Chou LS,Draganich LF

更新日期：1997-04-01 00:00:00

abstract：:Groups of rats were killed at 2, 6, 12, and 24 months of age. From dissected left and right mandibles in each rat, three pairs of transverse sections were cut at the incisal, middle, and basal regions of the incisor. One section in each pair was loaded until failure and a stress-strain curve for the periodontal ligame...

journal_title：Journal of biomechanics

authors： Komatsu K,Shibata T,Shimada A,Viidik A,Chiba M

更新日期：2004-07-01 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 deformation of red blood cells in microvessels was investigated numerically for various vessel diameters, hematocrits, and shear rates. We simulated blood flow in circular channels with diameters ranging from 9 to 50 μm, hematocrits from 20% to 45%, and shear rates from 20 to 150 s(-1) using a particle-based model...

journal_title：Journal of biomechanics

authors： Alizadehrad D,Imai Y,Nakaaki K,Ishikawa T,Yamaguchi T

更新日期：2012-10-11 00:00:00

abstract：:Resident cells in the surface epitenon and internal compartment of flexor tendons are subjected to cyclic mechanical load as muscle contracts to move limbs or digits. Tendons are largely tensile load bearing tissues and are highly matrix intensive with nondividing cells providing maintenance functions. However, when a...

journal_title：Journal of biomechanics

authors： Banes AJ,Tsuzaki M,Hu P,Brigman B,Brown T,Almekinders L,Lawrence WT,Fischer T

更新日期：1995-12-01 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：:The six non-interacting modes for stress, strain and energy in an orthotropic elastic model of human femoral cortical bone tissue are discussed and illustrated. The stress and strain modes are illustrated using the representation of the stress and strain fields around a circular hole in a flat plate of cortical bone s...

journal_title：Journal of biomechanics

authors： Cowin SC,Sadegh AM

更新日期：1991-01-01 00:00:00

abstract：:The present study investigated the feasibility and reliability of continuous relative phase (CRP) and deviation phase (DP) to assess intersegmental hind limb coordination pattern and coordination variability in rats during walking. Twenty-six adult rats walked at 8 m/min, 12 m/min and 16 m/min while two-dimensional ki...

journal_title：Journal of biomechanics

authors： Raffalt PC,Nielsen LR,Madsen S,Højberg LM,Pingel J,Nielsen JB,Alkjær T,Wienecke J

更新日期：2018-05-17 00:00:00

abstract：:Evaluation of workers' body posture in workstations is a prerequisite to estimate spinal loads and assess risk of injury for the subsequent design of preventive interventions. The Microsoft Kinect™ sensor is, in this regard, advantageous over the traditional skin-marker-based optical motion capture systems for being m...

journal_title：Journal of biomechanics

authors： Asadi F,Arjmand N

更新日期：2020-11-09 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：:Falls cause 95% of hip and wrist fractures and 60% of head injuries in older adults. Risk for such injuries depends in part on velocity at contact, and the time available during the fall to generate protective responses. However, we have no information on the impact velocities and durations of falls in older adults. W...

journal_title：Journal of biomechanics

authors： Choi WJ,Wakeling JM,Robinovitch SN

更新日期：2015-04-13 00:00:00

abstract：:Biomechanical optimization models that apply efficiency-based objective functions often underestimate or negate antagonist co-activation. Co-activation assists movement control, joint stabilization and limb stiffness and should be carefully incorporated into models. The purposes of this study were to mathematically de...

journal_title：Journal of biomechanics

authors： Brookham RL,Middlebrook EE,Grewal TJ,Dickerson CR

更新日期：2011-05-17 00:00:00

abstract：:Anesthetized, carefully positioned, female, weanling, white-haired pigs were used to test the hypothesis that (1) interface pressure, the pressure between the skin and an external load, can be used to predict the interstitial fluid pressure over the wings of ilia and the last dorsal spinous process and (2) three-dimen...

journal_title：Journal of biomechanics

authors： Dodd KT,Gross DR

更新日期：1991-01-01 00:00:00

abstract：:In a newly developed, highly sensitive dilatometer we applied pulsatile electric fields to five dry bone samples cut from mid-tibial sections within a 90 degrees angle from the rear to front axis. Samples of five cows were studied. We measured the piezoelectric coefficient d23 establishing its mean and confidence inte...

journal_title：Journal of biomechanics

authors： Aschero G,Gizdulich P,Mango F

更新日期：1999-06-01 00:00:00

abstract：:Various foot structures are thought to influence forefoot plantar pressures during walking. High peak plantar pressures (PPP) during walking in people with diabetes mellitus (DM) and peripheral neuropathy (PN) can cause skin breakdown. The question addressed by this study is "What are the primary forefoot structural f...

journal_title：Journal of biomechanics

authors： Mueller MJ,Hastings M,Commean PK,Smith KE,Pilgram TK,Robertson D,Johnson J

更新日期：2003-07-01 00:00:00

abstract：:Energy conservation in swimming is formulated in terms of four functions of the swim speed v: the consumed power K, the mechanical power P used for horizontal propulsion, the remaining expended mechanical power N, and the thermal power loss H. K is well-known (from VO2) and P = FDv, where the drag force FD is not know...

journal_title：Journal of biomechanics

authors： Brandt RA,Pichowsky MA

更新日期：1995-08-01 00:00:00

abstract：:Clinical trials have shown overlapping bare-metal stents provoke effective thrombus clot within the aneurysm sac and shrinkage of the aneurysm by directly regulating the hemodynamics. To gain insight into the hemodynamic mechanism of the technique, three cases of simplified thoracic aortic aneurysm models (with no ste...

journal_title：Journal of biomechanics

authors： Zhang P,Liu X,Sun A,Fan Y,Deng X

更新日期：2015-07-16 00:00:00