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Shu Lin - - 2010
Spatial and temporal plantar pressure distributions are important and useful measures in footwear evaluation, athletic training, clinical gait analysis, and pathology foot diagnosis. However, present plantar pressure measurement and analysis systems are more or less uncomfortable to wear and expensive. This paper presents an in-shoe plantar pressure measurement and analysis ...
van Geffen Paul - - 2010
Sitting acquired pressure ulcers are places of tissue breakdown that mainly occur under the ischial tuberosities (ITs). Successive durations of pressure relief help the buttock tissue recover from sustained deformation and blood-flow stagnation. A computer-aided simulator chair was developed with two adjustable tuberal support elements (TSE) integrated in a force-sensing ...
Elias John J JJ Calhoun Research Laboratory, Akron General Medical Center, 400 Wabash Avenue, Akron, OH 44307, USA. - - 2010
A study was performed to evaluate a computational model used to characterize the influence of vastus medialis obliquus (VMO) function on the patellofemoral pressure distribution. Ten knees were tested in vitro at 40 degrees, 60 degrees and 80 degrees of knee flexion with quadriceps loads applied to represent a normal ...
Kanellos George T - - 2010
We report on the development of a flexible 2D optical fiber-based pressure sensing surface suitable for biomedical applications. The sensor comprises of highly-sensitive Fiber Bragg Grating elements embedded in a thin polymer sheet to form a 2x2 cm(2) sensing pad with a minimal thickness of 2.5mm, while it is easily ...
Kuo Ching-Sung - - 2010
Finite element analysis results will show significant differences if the model used is performed under various material properties, geometries, loading modes or other conditions. This study adopted an FE model, taking into account the possible asymmetry inherently existing in the spine with respect to the sagittal plane, with a more ...
Yalçin Nadir - - 2010
The measurement of the medial longitudinal arch (MLA) of the foot is a controversial issue in orthopedics. Several methods have been developed to define and determine the MLA, but none of them are universally accepted. The purpose of this study was to compare some statically obtained radiographic angles with the ...
Kim Saim S Philips Chair for Medical Information Technology, RWTH Aachen University, Germany. - - 2010
The three main influence factors on the interface between textile electrode an skin are: temperature, contact pressure and relative humidity. This paper presents first results of a prototype, which measures these local measurement conditions around textile electrodes. The wearable prototype is a data acquisition system based on a microcontroller with ...
Chuang Shih-Youeng - - 2010
Exogenous crosslinking was proved to improve the fatigue resistance of anulus fibrosus and the stability of motion segment. The effect of crosslinking on the recovery of stab-injured discs, however, was less studied. The purpose of this study is to find if the exogenous crosslinking can increase the mechanical function of ...
Sakaue Hirotaka - - 2010
Anodized-aluminum pressure-sensitive paint (AA-PSP) uses the dipping deposition method to apply a luminophore on a porous anodized-aluminum surface. We study the dipping duration, one of the parameters of the dipping deposition related to the characterization of AA-PSP. The dipping duration was varied from 1 to 100,000 s. The properties characterized ...
Wilson Nicole A - - 2010
Decreases in patellofemoral pain have been demonstrated with bracing; however, the mechanisms of pain reduction remain unclear. Our purpose was to evaluate the hypothesis that patellofemoral bracing decreases peak pressure on the retropatellar surface through an increase in patellofemoral contact area. Nine cadaveric knees were tested during simulated free-speed walking ...
van der Tol P P J - - 2010
During milking, the teat is loaded because of a combination of vacuum and pressure of the collapsing liner. It is assumed that pressure concentrations tend to cause teat-end injuries and hyperkeratosis. The pressure distribution on the bovine teat was measured to test the hypothesis that the pressures of the collapsed ...
GUPTA Deepak D Department of Electronics, TELECOM Bretagne, France. - - 2010
This paper describes two useful metrics to estimate the ligament imbalance for post Total Knee Arthroplasty (TKA) scenario: the center of pressure and the net moments (varus-valgus and anterior posterior). Both metrics have been evaluated using high level models and experimental measurement. Self-powered analog and digital architectures for the center ...
Pauk Jolanta - - 2010
This paper describes the method of measuring and assessing the pressure distribution under typical feet and the feet of patients with deformities such as: planovalgus, clubfoot, and pes planus using a pedobarograph. Foot pressure distribution was measured during static and walking at individual normal walking speed. Time-series pressure measurements for ...
Tiangco David A - - 2010
3,4-Methylenedioxymethamphetamine (MDMA) is an illicit psychoactive drug with cardiovascular effects that have not been fully described. In the current study, we observed the effects of acute MDMA on rabbit left ventricular function. We also observed the effects of MDMA on nuclear factor-kappa B (NF-κB) activity in cultured rat ventricular myocytes ...
Zequera Martha L ML Electronical Engineering Department, Bioengineering and Signal Processing Research group, Pontificia Universidad Javeriana, - - 2010
It has been well documented that subjects with peripheral neuropathy resulting from diabetes mellitus are at high risk of developing foot ulceration. Decreased sensation, in combination with high underfoot pressures, have been identified as prime etiology factors in the cause of plantar naturopathic ulceration [1]. This study presents the effect ...
Liu Shing-Hong - - 2010
Arterial pressure waveforms contain important diagnostic and physiological information since their contour depends on a healthy cardiovascular system 1. A sensor was placed at the measured artery and some contact pressure was used to measure the pressure waveform. However, where is the location of the sensor just about enough to ...
Safar Michel E - - 2010
In hypertension, the blood pressure curve may be divided into two sets of components. The first set is mean arterial pressure, steady flow, and vascular resistance, thus acting on small arteries; the second set refers to large arteries, hence to pulse pressure, arterial stiffness, and wave reflections. The angiotensin-converting enzyme ...
do Carmo Dos Reis Maria M Faculdade UnB-Gama, University of Brasília, Gama-DF, Brazil. - - 2010
This article presents the development of a prototype insole derived from natural rubber from Hevea brasiliensis, equipped with pressure control and capable of neoformation of tissue for people who have diabetic foot. The active element of this insole is the electronic circuit that monitors the plantar pressure. In addition, on ...
Zammit Gerard V - - 2010
Plantar pressure systems are increasingly being used to evaluate foot function in both research settings and in clinical practice. The purpose of this study was to investigate the reliability of the TekScan MatScan(R) system in assessing plantar forces and pressures during barefoot level walking. Thirty participants were assessed for the ...
De Rossi S M M SM ARTS Lab, Scuola Superiore Sant'Anna, viale Rinaldo Piaggio 34, 56025, Pontedera (Pi), Italy. - - 2010
A new and alternative method to measure the interaction force between the user and a lower-limb gait rehabilitation exoskeleton is presented. Instead of using a load cell to measure the resulting interaction force, we propose a distributed measure of the normal interaction pressure over the whole contact area between the ...
Najafi Bijan - - 2010
The joint deformity that arises as a result of Charcot neuroarthropathy, leads to gait modification. Ulceration risk associated with the deformity is generally assessed by measuring plantar pressure magnitude (PPM). However, as PPM is partially dependent on gait speed and treatment interventions may impact speed, the use of PPM to ...
Pataky Z - - 2010
The reduction of high plantar pressure in diabetic patients with peripheral neuropathy is mandatory for prevention of foot ulcers and amputations. We used a new biofeedback-based method to reduce the plantar pressure at an at-risk area of foot in diabetic patients with peripheral neuropathy. Thirteen diabetic patients (age 60.8 +/- ...
Grivas Theodoros B - - 2010
A systematic examination of the braces commonly used in Europe lacks in literature. Therefore the objective of this report is the description of the European braces widely used. The history, design rationale, indications, biomechanics, outcomes and comparison between some braces are reported. Chêneau Brace is used in France and other ...
Haque Serajul - - 2010
In the present study, bent-handled needle-nose pliers, designed from an ergonomic perspective as an improvement over the conventional plier were investigated. A convenience sample of fourteen volunteer male university students aged between (20 and 24 years old) participated in the study. Three angles to the jaws of plier (0°, 10° ...
Choi W J - - 2010
BACKGROUND: We examined how a soft shell hip protector affects the magnitude and distribution of force to the hip during simulated falls, and how the protective effect depends on the fall direction and the amount of soft tissue padding over the hip. METHODS: Fourteen young women with either high or ...
Wilkinson Katy - - 2010
For the past decade, the policy community/issue network typology of pressure group interaction has been used to explain policy outcomes and the policy-making process. To re-examine the validity of this typology, the paper focuses on the UK government's response to the 2001 Foot and Mouth Disease (FMD) crisis, and in ...
Ellis Scott Jacob - - 2010
BACKGROUND: Lateral column lengthening, a commonly used adjuvant for the reconstruction of adult flatfoot deformity, can lead to postoperative complaints of lateral plantar pain or discomfort. We hypothesized that patients with such symptoms would have increased lateral plantar pressures when compared with matched controls without these symptoms. METHODS: Ten subjects ...
Chevalier Thierry Larose - - 2010
This study compared three different foot-pressure measurement methods to investigate whether these measurement methods could or should be used interchangeably. In-shoe pressure measurements using F-Scan system, shod and unshod pressure measurements using the MatScan system were taken for each of the 21 healthy subjects while performing walking trials using a ...
Goss Ben C - - 2010
PURPOSE: To measure pressure within the carpal tunnel (intracarpal tunnel pressures) in patients with carpal tunnel syndrome and determine the effect of quantified active hand use on both the magnitude and location of peak pressures, before and after division of the transverse carpal ligament. METHODS: We measured intracarpal tunnel pressures ...
Poitras Philippe - - 2010
HYPOTHESIS: Our hypothesis was that tightening of the posterior capsule would lead to increased subacromial pressure and increased superior translation during active abduction in the scapular plane. BACKGROUND: Subacromial impingement syndrome is a painful condition that occurs during overhead activities as the rotator cuff is compressed in the subacromial space. ...
Putti A B - - 2010
Indians are the largest single ethnic minority group in the United Kingdom and form more than one million of the current population. No studies have investigated foot pressure differences between Caucasians and Indians. The aim of our study was to investigate the in-shoe pressure differences in Caucasians and Indians using ...
Muraki Takayuki - - 2010
BACKGROUND: Tightness of the posteroinferior capsule is assumed to be the cause of internal rotation loss in baseball pitchers. Although the relationship between posterior capsule and subacromial impingement has been recognized, this relationship during the baseball-pitching motion is unclear. HYPOTHESIS: Contact pressure during baseball-pitching motion increases with posterior capsule tightness. ...
Rougier Patrice - - 2009
To highlight the capacity of one- and two-legged standing protocols when assessing postural behavior induced by a rigid ankle orthosis, 14 healthy individuals stood upright barefoot and wore either an elastic stocking on the preferred leg or a rigid orthosis with or without additional taping in one- or two-legged (TL) ...
Kage Haruko - - 2009
Kage H, Okuda M, Nakamura I, Kunitsugu I, Sugiyama S, Hobara T. Measuring methods for functional reach test: comparison of 1-arm reach and 2-arm reach. OBJECTIVES: To investigate which functional reach test better reflects the center of pressure excursion, a 1-arm reach or a 2-arm reach, and to investigate the ...
Moore Michael Kevin - - 2009
BACKGROUND CONTEXT: An implantable, freestanding, minimally invasive, intervertebral disc pressure sensor would vastly improve the knowledge of spinal biomechanics and the understanding of spinal disease. Additionally, it would improve clinical indications for surgical interventions in disc-related pathology. Adaptation of current commercially available materials, technology, and microfabrication techniques may now make ...
Deleu P-A - - 2010
To assess the effectiveness of the Barouk(®) second-generation postoperative forefoot relief shoes during appropriate use of the shoe on healthy subjects. A convenience sample of 35 volunteer subjects (17 women, 18 men) was recruited to participate in this study. Dynamic foot loading was evaluated with inshoe plantar pressure measurements. Subjects ...
Rao Smita - - 2010
The purpose of our study was to examine dynamic foot function during gait as it relates to plantar loading in individuals with DM (diabetes mellitus and neuropathy) compared to matched control subjects. Foot mobility during gait was examined using a multi-segment kinematic model, and plantar loading was measured using a ...
Mihata Teruhisa - - 2010
BACKGROUND: The objective of this study was to determine the effects of increased horizontal abduction with maximum external rotation, as occurs during the late cocking phase of throwing motion, on shoulder internal impingement. HYPOTHESIS: An increase in glenohumeral horizontal abduction will cause overlap of the rotator cuff insertion with respect ...
Johanson Norman A - - 2011
The purpose of this study was to use a validated capacitive pressure (Novel Electronics, Inc, St Paul, Minn) in the measurement and distribution of patellofemoral forces and pressures during simulated operative procedures. Six fresh frozen cadaver knees were evaluated through a range of motion and observations recorded in native knees ...
Dellweg Dominic - - 2010
There is no published data about mask features that impact skin contact pressure during mask ventilation. To investigate the physical factors of skin contact pressure formation. We measured masks with original and reduced air cushion size and recorded contact pressure. We determined cushion contact and mask areas by planimetric measurements. ...
Rougier P R - - 2009
OBJECTIVE: In human subjects, leg amputation impairs upright quiet-stance control. The inability to exert appropriate force reactions under the amputated leg and a slight weight-bearing asymmetry cause the amputee to develop compensatory mechanisms through the sound leg. This study is aimed at assessing these mechanisms and the influence of the ...
Seo Jeong-Hee - - 2009
PURPOSE: Our purpose was to evaluate the result of radial tears at the root of the posterior horn of the medial meniscus (PHMM) in terms of tibiofemoral contact mechanics and the effectiveness of pullout sutures for such tears. METHODS: Eleven mature pig knees each underwent 15 different testing conditions with ...
Owings T M - - 2009
AIMS: The recurrence of foot ulcers is a significant problem in people with diabetic neuropathy. The purpose of this study was to measure in-shoe plantar pressures and other characteristics in a group of neuropathic patients with diabetes who had prior foot ulcers which had remained healed. METHODS: This was an ...
Ko Ping-Hsin PH Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, School of Medicine, National Taiwan University, Taipei, - - 2009
Metatarsalgia due to increased plantar pressure under the metatarsal head (MTH) is often seen with wearing high-heeled shoes. However, the concomitant soft tissue strain has not been well discussed. The objective of our study was to explore the standing plantar pressure and corresponding soft tissue strain under the metatarsal heads ...
Pillet H?l?ne - - 2010
The estimation of the trajectory of the centre of pressure during gait is possible without using force plate by modelling the whole body as a multi-segment chain. The kinematics and inertial parameters of each segment are necessary to determine the ground reaction forces and moments. The position of the centre ...
Shaw Alyra J - - 2010
Purpose. To investigate static upper eyelid pressure and contact with the ocular surface in a group of young adult subjects. Methods. Static upper eyelid pressure was measured for 11 subjects using a piezoresistive pressure sensor attached to a rigid contact lens. Measures of eyelid pressure were derived from an active ...
Baums Mike H - - 2010
The aim of the study was to evaluate the time-zero mechanical and footprint properties of a suture-bridge technique for rotator cuff repair in an animal model. Thirty fresh-frozen sheep shoulders were randomly assigned among three investigation groups: (1) cyclic loading, (2) load-to-failure testing, and (3) tendon-bone interface contact pressure measurement. ...
Mimura Maki - - 2009
Surface pressures and shear forces were measured in order to clarify the mechanism leading to the development of a pressure ulcer at five sites on the body during the operation of a bed (bed) using a device for simultaneously measuring pressure and shear force. Changes of shear force and pressure ...
Voronov Michael L - - 2009
Static and dynamic loading of the foot are important characteristics for understanding human walking in both health and disease. The goal of this investigation was to determine whether an objective measure of normal midstance loading of the foot could reliably be recorded using readily available disposable qualitative recording devices. Ten ...
Keijsers N L W - - 2010
Dynamic plantar pressure images are routinely used in clinical gait assessment, and peak pressure, mean pressure, and pressure-time integral are the most frequently used parameters to summarize these images. Many studies report only one parameter, but other studies report all three. The interdependency of these variables has not been explicitly ...
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