Physical properties of resistance vessel wall in peripheral blood flow regulation--I. Mathematical model.

abstract：OBJECTIVE:To test if the caudal acetabulum of the cat is unloaded at mid-stance as has been asserted. MATERIALS AND METHODS:A kinematic study of five healthy cats was performed to ascertain the mid-stance angle of the hip joint, and the orientation of the pelvis and femur. Femora and pelves from 10 feline cadavers wer...

journal_title：Journal of biomechanics

authors： Beck AL,Pead MJ,Draper E

更新日期：2005-03-01 00:00:00

abstract：:Polyethylene remains the most popular bearing material for total knee arthroplasty (TKA). Despite its widespread use, wear continue to be one of major factors implicated in revision surgery. Sliding distance, cross-shear, and contact stress are the major factors influencing polyethylene wear. As previous studies have ...

journal_title：Journal of biomechanics

authors： Arauz P,Peng Y,An S,Kwon YM

更新日期：2018-08-22 00:00:00

abstract：:Individuals with spinal cord injury experience a rapid loss of bone mineral below the neurological lesion. The clinical consequence of this bone loss is a high rate of fracture around regions of the knee. The ability to predict the mechanical competence of bones at this location may serve as an important clinical tool...

journal_title：Journal of biomechanics

authors： Edwards WB,Schnitzer TJ,Troy KL

更新日期：2013-06-21 00:00:00

abstract：:Pulsatile flow in abdominal aortic aneurysm (AAA) models has been examined in order to understand the hemodynamics that may contribute to growth of an AAA. The model studies were conducted by experiments (flow visualization and laser Doppler velocimetry) and by numerical simulation using physiologically realistic rest...

journal_title：Journal of biomechanics

authors： Egelhoff CJ,Budwig RS,Elger DF,Khraishi TA,Johansen KH

更新日期：1999-12-01 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：: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：:Interstitial fluid flow has been shown to affect the organization and behavior of cells in 3D environments in vivo and in vitro, yet the forces driving such responses are not clear. Due to the complex architecture of the extracellular matrix (ECM) and the difficulty of measuring fluid flow near cells embedded in it, t...

journal_title：Journal of biomechanics

authors： Pedersen JA,Boschetti F,Swartz MA

更新日期：2007-01-01 00:00:00

abstract：:In order to perform effective static stretching of the hip adductor muscles, it is necessary to clarify the position where the muscles are most stretched. However, the effective flexion angle in stretching for each adductor muscle remains unclear. The goal of this study was to investigate the effect of hip flexion ang...

journal_title：Journal of biomechanics

authors： Ogawa T,Saeki J,Ichihashi N

更新日期：2020-03-05 00:00:00

abstract：:Although shear wave elastography (SWE) has been used to indirectly measure passive tension in muscle tissues, it is unknown whether SWE can adequately evaluate passive tension in capsule tissues. This study investigated the relationship between the shear modulus and passive tension in the posterior shoulder capsule us...

journal_title：Journal of biomechanics

authors： Iida N,Taniguchi K,Watanabe K,Miyamoto H,Taniguchi T,Fujimiya M,Katayose M

更新日期：2020-01-23 00:00:00

abstract：:Controlling dynamic interactions between the lower limb and ground is important for skilled locomotion and may influence injury risk in athletes. It is well known that female athletes sustain anterior cruciate ligament (ACL) tears at higher rates than male athletes, and exhibit lower extremity biomechanics thought to ...

journal_title：Journal of biomechanics

authors： Lyle MA,Valero-Cuevas FJ,Gregor RJ,Powers CM

更新日期：2014-01-22 00:00:00

abstract：:The considerable blood mixing in the bidirectional Glenn (BDG) physiology further limits the capacity of the single working ventricle to pump enough oxygenated blood to the circulatory system. This condition is exacerbated under severe conditions such as physical activity or high altitude. In this study, the effect of...

journal_title：Journal of biomechanics

authors： Vallecilla C,Khiabani RH,Sandoval N,Fogel M,Briceño JC,Yoganathan AP

更新日期：2014-06-03 00:00:00

abstract：BACKGROUND:Dilation and dissection of aneurysmal ascending aortic tissues occur preferentially at the outer curvature of the vessel. In this study we hypothesize that the density and contractile properties of the vascular smooth muscle cells (VSMCs) of the pig ascending aorta (AA) are heterogeneous and could explain th...

journal_title：Journal of biomechanics

authors： Tremblay D,Cartier R,Mongrain R,Leask RL

更新日期：2010-08-26 00:00:00

abstract：:When stepping down from a height difference in ongoing gait, subjects are known to use a heel landing at small height differences and switch to toe landing for larger height differences. We hypothesized that in toe landing, the leading leg can perform more negative work, to control the momentum gained during the desce...

journal_title：Journal of biomechanics

authors： van Dieën JH,Spanjaard M,Könemann R,Bron L,Pijnappels M

更新日期：2008-08-07 00:00:00

abstract：:Meaningful testing of stab resistant body armour requires the use of realistic body tissue simulants. A device for the determination of the force-displacement behaviour of materials in high impact loading situations has been developed for the testing of such simulants. Force measurement is achieved with the use of ele...

journal_title：Journal of biomechanics

authors： Chadwick EK,Nicol AC,Floyd S,Gray TG

更新日期：2000-03-01 00:00:00

abstract：:Anchorage of pedicle screw instrumentation in the elderly spine with poor bone quality remains challenging. In this study, micro finite element (µFE) models were used to assess the specific influence of screw design and the relative contribution of local bone density to fixation mechanics. These were created from micr...

journal_title：Journal of biomechanics

authors： Chevalier Y,Matsuura M,Krüger S,Fleege C,Rickert M,Rauschmann M,Schilling C

更新日期：2018-03-21 00:00:00

abstract：:Falls on the outstretched hands are the cause of over 90% of wrist fractures, yet little is known about bone loading during this event. We tested how the magnitude and distribution of pressure over the palm region during a forward fall is affected by foam padding (simulating a glove) and arm configuration, and by the ...

journal_title：Journal of biomechanics

authors： Choi WJ,Robinovitch SN

更新日期：2011-02-03 00:00:00

abstract：BACKGROUND:OpenSim models are typically based on cadaver findings that are generalized to represent a wide range of populations, which curbs their validity. Patient-specific modelling through incorporating magnetic resonance imaging (MRI) improves the model's biofidelity with respect to joint alignment and articulation...

journal_title：Journal of biomechanics

authors： Smale KB,Conconi M,Sancisi N,Krogsgaard M,Alkjaer T,Parenti-Castelli V,Benoit DL

更新日期：2019-01-23 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：:Cervical spine injuries continue to be a costly societal problem. Future advancements in injury prevention depend on improved physical and computational models, which are predicated on a better understanding of the neck response during dynamic loading. Previous studies have shown that the tolerance of the neck is depe...

journal_title：Journal of biomechanics

authors： Nightingale RW,Sganga J,Cutcliffe H,Bass CR

更新日期：2016-02-29 00:00:00

abstract：:Refractures and secondary fractures occur after removal of internal fixation devices even when the X-rays show well-mineralized bony unions. This indicates the unreliability of bone density as the only parameter to estimate the strength of healing bone. The aim of this study was to show that the strength of healing bo...

journal_title：Journal of biomechanics

authors： Claes LE,Wilke HJ,Kiefer H

更新日期：1995-11-01 00:00:00

abstract：:The effects of regional lung differences in alveolar mechanics on the transpulmonary pressure-volume (Ptp-V) relationship and the single-breath washout (SBW) of nitrogen were investigated by mathematical modeling and postmorten human lung experiments. Regional nonuniformity in alveolar collapse and re-opening were ass...

journal_title：Journal of biomechanics

authors： Salmon RB,Saidel GM,Primiano FP Jr,Niewoehner DE,Chester EH

更新日期：1983-01-01 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：:Musculo-skeletal modeling could play a key role in advancing our understanding of the healthy and pathological spine, but the credibility of such models are strictly dependent on the accuracy of the anatomical data incorporated. In this study, we present a complete and coherent musculo-skeletal dataset for the thoraci...

journal_title：Journal of biomechanics

authors： Bayoglu R,Geeraedts L,Groenen KHJ,Verdonschot N,Koopman B,Homminga J

更新日期：2017-06-14 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：:Progression and rupture of atherosclerotic plaques in coronary and carotid arteries are the key processes underlying myocardial infarctions and strokes. Biomechanical stress analyses to compute mechanical stresses in a plaque can potentially be used to assess plaque vulnerability. The stress analyses strongly rely on ...

journal_title：Journal of biomechanics

authors： Akyildiz AC,Speelman L,Gijsen FJ

更新日期：2014-03-03 00:00:00

abstract：:This paper is an attempt to systematize and solve the problems connected with biomechanical modelling and mathematical investigation of the upper limb, when all muscles acting on the shoulder, elbow and wrist joint are included. The basic problem is the assumption of a hypothesis for the unit vectors, collinear with m...

journal_title：Journal of biomechanics

authors： Raikova R

更新日期：1992-08-01 00:00:00

abstract：:Hip joint dislocations related to total hip arthroplasty (THA) are a common complication especially in the early postoperative course. The surgical approach, the alignment of the prosthetic components, the range of motion and the muscle tone are known factors influencing the risk of dislocation. A further factor that ...

journal_title：Journal of biomechanics

authors： Prietzel T,Hammer N,Schleifenbaum S,Kaßebaum E,Farag M,von Salis-Soglio G

更新日期：2014-08-22 00:00:00

abstract：:Mandibular advancement splints (MAS), which protrude the lower jaw during sleep, are recognized as an effective treatment for obstructive sleep apnea (OSA) through their action of enlarging the airway space and preventing upper airway collapse. However a clinical challenge remains in preselecting patients who will res...

journal_title：Journal of biomechanics

authors： Zhao M,Barber T,Cistulli P,Sutherland K,Rosengarten G

更新日期：2013-01-04 00:00:00

abstract：:The objective of the current study was to use fluoroscopy to accurately determine the three-dimensional (3D), in vivo, weight-bearing kinematics of 10 normal and five anterior cruciate ligament deficient (ACLD) knees. Patient-specific bone models were derived from computed tomography (CT) data. 3D computer bone models...

journal_title：Journal of biomechanics

authors： Dennis DA,Mahfouz MR,Komistek RD,Hoff W

更新日期：2005-02-01 00:00:00

abstract：:A two-dimensional, five-muscle model was used to determine the degree of precision required for accurate calculation of temporomandibular joint force magnitude and direction. The sensitivity of the calculations to each variable were assessed by incrementing each variable through its presumed biological range and were ...

journal_title：Journal of biomechanics

authors： Throckmorton GS

更新日期：1989-01-01 00:00:00