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Gait analysis

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https://www.readbyqxmd.com/read/29793187/stapp-spatiotemporal-analysis-of-plantar-pressure-measurements-using-statistical-parametric-mapping
#1
Brian G Booth, Noël L W Keijsers, Jan Sijbers, Toon Huysmans
BACKGROUND: Pedobarography produces large sets of plantar pressure samples that are routinely subsampled (e.g. using regions of interest) or aggregated (e.g. center of pressure trajectories, peak pressure images) in order to simplify statistical analysis and provide intuitive clinical measures. RESEARCH QUESTION: We hypothesize that these data reductions discard gait information that can be used to differentiate between groups or conditions. METHODS: To test the hypothesis of null information loss, we created an implementation of statistical parametric mapping (SPM) for dynamic plantar pressure datasets (i...
May 3, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29792211/the-impact-of-ankle-foot-orthoses-on-toe-clearance-strategy-in-hemiparetic-gait-a-cross-sectional-study
#2
Kannit Pongpipatpaiboon, Masahiko Mukaino, Fumihiro Matsuda, Kei Ohtsuka, Hiroki Tanikawa, Junya Yamada, Kazuhiro Tsuchiyama, Eiichi Saitoh
BACKGROUND: Ankle-foot orthoses (AFOs) are frequently used to improve gait stability, toe clearance, and gait efficiency in individuals with hemiparesis. During the swing phase, AFOs enhance lower limb advancement by facilitating the improvement of toe clearance and the reduction of compensatory movements. Clinical monitoring via kinematic analysis would further clarify the changes in biomechanical factors that lead to the beneficial effects of AFOs. The purpose of this study was to investigate the actual impact of AFOs on toe clearance, and determine the best strategy to achieve toe clearance (including compensatory movements) during the swing phase...
May 23, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/29791868/ontogeny-of-white-matter-toll-like-receptor-expression-and-motor-skills-in-the-neonatal-ferret
#3
Jessica M Snyder, Thomas R Wood, Kylie Corry, Daniel H Moralejo, Pratik Parikh, Sandra E Juul
Inflammation caused by perinatal infection, superimposed with hypoxia and/or hyperoxia, appears to be important in the pathogenesis of preterm neonatal encephalopathy, with white matter particularly vulnerable during the third trimester. The associated inflammatory response is at least partly mediated through Toll-like receptor (TLR)-dependent mechanisms. Immunohistochemistry, gene expression, and behavioral studies were used to characterize white matter development and determine TLR3 and TLR4 expression and accumulation in the neonatal ferret brain...
May 20, 2018: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/29791183/a-2-year-prospective-cohort-study-of-overuse-running-injuries-the-runners-and-injury-longitudinal-study-trails
#4
Stephen P Messier, David F Martin, Shannon L Mihalko, Edward Ip, Paul DeVita, D Wayne Cannon, Monica Love, Danielle Beringer, Santiago Saldana, Rebecca E Fellin, Joseph F Seay
BACKGROUND: The National Center for Injury Prevention and Control, noting flaws in previous running injury research, called for more rigorous prospective designs and comprehensive analyses to define the origin of running injuries. PURPOSE: To determine the risk factors that differentiate recreational runners who remain uninjured from those diagnosed with an overuse running injury during a 2-year observational period. STUDY DESIGN: Cohort study; Level of evidence, 2...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29790385/kinect4fog-monitoring-and-improving-mobility-in-people-with-parkinson-s-using-a-novel-system-incorporating-the-microsoft-kinect-v2
#5
Amin Amini, Konstantinos Banitsas, William R Young
Parkinson's is a neurodegenerative condition associated with several motor symptoms including tremors and slowness of movement. Freezing of gait (FOG); the sensation of one's feet being "glued" to the floor, is one of the most debilitating symptoms associated with advanced Parkinson's. FOG not only contributes to falls and related injuries, but also compromises quality of life as people often avoid engaging in functional daily activities both inside and outside the home. In the current study, we describe a novel system designed to detect FOG and falling in people with Parkinson's (PwP) as well as monitoring and improving their mobility using laser-based visual cues cast by an automated laser system...
May 23, 2018: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/29789250/sectioning-of-the-anterior-intermeniscal-ligament-changes-knee-loading-mechanics
#6
Matthieu Ollivier, Julie Falguières, Martine Pithioux, Philippe Boisrenoult, Phillippe Beaufils, Nicolas Pujol
PURPOSE: The purpose of this cadaver research project was to describe the biomechanical consequences of anterior intermeniscal ligament (AIML) resection on menisci function under load conditions in full extension and 60° of flexion. METHODS: Ten unpaired fresh frozen cadaveric knees were dissected leaving the knee joint intact with its capsular and ligamentous attachments. The femur and tibia were sectioned 15 cm from the joint line and mounted onto the loading platform...
May 19, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29789150/compensation-for-inertial-and-gravity-effects-in-a-moving-force-platform
#7
Sandra K Hnat, Ben J H van Basten, Antonie J van den Bogert
Force plates for human movement analysis provide accurate measurements when mounted rigidly on an inertial reference frame. Large measurement errors occur, however, when the force plate is accelerated, or tilted relative to gravity. This prohibits the use of force plates in human perturbation studies with controlled surface movements, or in conditions where the foundation is moving or not sufficiently rigid. Here we present a linear model to predict the inertial and gravitational artifacts using accelerometer signals...
May 19, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29786683/-the-application-of-kinesiotaping-for-the-rehabilitation-of-the-post-stroke-patients
#8
V I Berezutsky
This review of the scientific literature was designed to consider the prospects for the application of kinesiotaping for the rehabilitation of the post-stroke patients. The relevance of the work arises from the absence of a systemic analysis of the large number of investigations that have been carried out during the past two years. The objective of the present review article was to evaluate the influence of kinesiotaping on the health status of the post-stroke patients and the course of their rehabilitative treatment based on the results of analysis of the scientific reports published during the period from 2015 to 2017...
May 21, 2018: Voprosy Kurortologii, Fizioterapii, i Lechebnoĭ Fizicheskoĭ Kultury
https://www.readbyqxmd.com/read/29785395/the-relationship-between-nafld-and-sarcopenia-in-elderly-patients
#9
Yu Zhai, Qian Xiao, Jing Miao
Aim: Previous studies have shown that individuals with low muscle mass exhibit an increased risk of nonalcoholic fatty liver disease (NAFLD). In this study, we investigated the association between NAFLD and sarcopenia in elderly patients. Methods: We classified the participants into sarcopenia/nonsarcopenia groups based on dual-energy X-ray absorptiometry (DXA), muscle strength (grip strength), or/and physical performance (6 m usual gait speed). We diagnosed NAFLD by ultrasonography combined with the history of alcohol intake...
2018: Canadian Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29782635/effect-of-home-based-rehabilitation-for-hip-fracture-a-meta-analysis-of-randomized-controlled-trials
#10
Desheng Wu, Xiulan Zhu, Shaowei Zhang
BACKGROUND: Home-based rehabilitation following hip fracture may be beneficial; however, the evidence is controversial. The aim of this systematic review and meta-analysis was to evaluate the effectiveness of home-based rehabilitation in patients with hip fracture. METHODS: PubMed, Embase, Web of Science, EBSCO, and Cochrane Library databases were searched systematically. Randomized controlled trials (RCTs) assessing the effect of home-based rehabilitation for patients with hip fracture were included...
May 21, 2018: Journal of Rehabilitation Medicine
https://www.readbyqxmd.com/read/29781156/effects-of-low-intensity-pulsed-ultrasound-on-radiographic-healing-of-tibial-plateau-leveling-osteotomies-in-dogs-a-prospective-randomized-double-blinded-study
#11
Nina R Kieves, Sherman O Canapp, Peter J Lotsikas, Scott A Christopher, Christopher S Leasure, Debra Canapp, Patrick R Gavin
OBJECTIVE: To determine the influence of low-intensity pulsed ultrasound (LIPUS) on radiographic healing and limb function after uncomplicated, stable osteotomies in dogs. STUDY DESIGN: In vivo, prospective, randomized, double-blinded, placebo-control study. SAMPLE POPULATION: Fifty client-owned dogs. METHODS: Fifty client-owned dogs with naturally occurring unilateral cranial cruciate ligament rupture were enrolled prior to tibial plateau leveling osteotomy...
May 20, 2018: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/29780837/foot-kinematics-differ-between-runners-with-and-without-a-history-of-navicular-stress-fractures
#12
James Becker, Stanley James, Louis Osternig, Li-Shan Chou
Background: A navicular stress fracture (NSF) is a common and high-risk injury in distance runners. It is not clear whether there are differences in foot structure and function between runners who have and those who have not sustained an NSF. Purpose/Hypothesis: This study compared foot structure, range of motion, and biomechanics between runners with a history of unilateral NSFs and runners who had never sustained this injury. The hypothesis was that runners with a history of NSFs will have less dorsiflexion and subtalar range of motion in a clinical examination and greater rearfoot eversion and higher eversion velocity while running than either the noninvolved feet or healthy controls...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29779902/molecular-genetics-and-metabolism-special-edition-diagnosis-diagnosis-and-prognosis-of-mucopolysaccharidosis-iva
#13
REVIEW
Hira Peracha, Kazuki Sawamoto, Lauren Averill, Heidi Kecskemethy, Mary Theroux, Mihir Thacker, Kyoko Nagao, Christian Pizarro, William Mackenzie, Hironori Kobayashi, Seiji Yamaguchi, Yasuyuki Suzuki, Kenji Orii, Tadao Orii, Toshiyuki Fukao, Shunji Tomatsu
Mucopolysaccharidosis IVA (MPS IVA, Morquio A syndrome) is an autosomal recessive disorder caused by the deficiency of N-acetylgalactosamine-6-sulfate sulfatase. Deficiency of this enzyme leads to the accumulation of specific glycosaminoglycans (GAGs), chondroitin-6-sulfate (C6S) and keratan sulfate (KS), which are mainly synthesized in the cartilage. Therefore, the substrates are stored primarily in the cartilage and its extracellular matrix (ECM), leading to a direct impact on bone development and successive systemic skeletal spondylepiphyseal dysplasia...
May 15, 2018: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/29779140/knee-motion-symmetry-was-not-restored-in-patients-with-unilateral-bi-cruciate-retaining-total-knee-arthroplasty-in-vivo-three-dimensional-kinematic-analysis
#14
Paul Arauz, Yun Peng, Young-Min Kwon
PURPOSE: Although unilateral total knee arthroplasty (TKA) is successful in restoring function, there are concerns in relation to asymmetric gait patterns. Bi-cruciate retaining (BCR) TKA design preserves both anterior and posterior cruciate ligaments with the potential to restore normal joint kinematics. The purpose of this study was to investigate the in vivo three-dimensional (3D) kinematics of the knee in unilateral BCR TKA patients during gait. METHODS: Twenty-nine unilateral BCR TKA patients were evaluated for both knees during treadmill gait using a combined computer tomography and dual fluoroscopic imaging system approach...
May 19, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29778980/the-influence-of-early-or-delayed-provision-of-ankle-foot-orthoses-on-pelvis-hip-and-knee-kinematics-in-patients-with-sub-acute-stroke-a-randomized-controlled-trial
#15
Corien D M Nikamp, Job van der Palen, Hermie J Hermens, Johan S Rietman, Jaap H Buurke
BACKGROUND: Compensatory pelvis, hip- and knee movements are reported after stroke to overcome insufficient foot-clearance. Ankle-foot orthoses (AFOs) are often used to improve foot-clearance, but the optimal timing of AFO-provision post-stroke is unknown. Early AFO-provision to prevent foot-drop might decrease the development of compensatory movements, but it is unknown whether timing of AFO-provision affects post-stroke kinematics. RESEARCH QUESTIONS: 1) To compare the effect of AFO-provision at two different points in time (early versus delayed) on frontal pelvis and hip, and sagittal hip and knee kinematics in patients with sub-acute stroke...
May 16, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29778063/comparison-of-three-dimensional-multi-segmental-foot-models-used-in-clinical-gait-laboratories
#16
Kristen Nicholson, Chris Church, Colton Takata, Tim Niiler, Brian Po-Jung Chen, Nancy Lennon, Julie P Sees, John Henley, Freeman Miller
BACKGROUND: Many skin-mounted three-dimensional multi-segmented foot models are currently in use for gait analysis. Evidence regarding the repeatability of models, including between trial and between assessors, is mixed, and there are no between model comparisons of kinematic results. RESEARCH QUESTION: This study explores differences in kinematics and repeatability between five three-dimensional multi-segmented foot models. The five models include duPont, Heidelberg, Oxford Child, Leardini, and Utah...
May 16, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29777477/cardiac-and-gait-rhythms-in-healthy-younger-and-older-adults-during-treadmill-walking-tasks
#17
Matthew W Wittstein, Joseph M Starobin, Randy J Schmitz, Sandra J Shulz, Francis Jay Haran, Christopher K Rhea
BACKGROUND: Aging and pathology result in changes in the dynamics of several physiological subsystems. Often, these changes are concurrent, altering the dynamics between subsystems. Cardiac and gait rhythms are one example in which patterns change during physical activity. AIMS: The purpose of this research is to simultaneously monitor changes in cardiac and gait rhythms when participants complete various treadmill walking tasks-normal speed, fast speed, and while synchronizing steps with a blinking metronome...
May 17, 2018: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/29777461/hiv-aids-and-an-overweight-body-mass-are-associated-with-excessive-intra-individual-variability-in-response-preparation
#18
Lance O Bauer
Factors other than HIV/AIDS may influence the cognitive function of patients living with this disease. The present study tested the influence of a common comorbid problem-an overweight body mass. It also examined intra-task variabilities in performance and brain activation as potentially more sensitive indicators of dysfunction than their mean levels. One-hundred seventy-eight participants were recruited and categorized by HIV-1 serostatus (-/+) and body mass (BMI < 26/≥ 26 kg/m2 ). They performed a simple time estimation task during which response time accuracy and electroencephalographic readiness potentials were recorded...
May 17, 2018: Journal of Neurovirology
https://www.readbyqxmd.com/read/29776821/wide-step-width-reduces-knee-abduction-moment-of-obese-adults-during-stair-negotiation
#19
Derek Yocum, Joshua T Weinhandl, Jeffrey T Fairbrother, Songning Zhang
PURPOSE: An increased likelihood of developing obesity-related knee osteoarthritis may be associated with increased peak internal knee abduction moments (KAbM). Increases in step width (SW) may act to reduce this moment. The purpose of this study was to determine the effects of increased SW on knee biomechanics during stair negotiation of healthy-weight and obese participants. METHODS: Participants (24: 10 obese and 14 healthy-weight) used stairs and walked over level ground while walking at their preferred speed in two different SW conditions - preferred and wide (200% preferred)...
May 15, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29775910/hip-and-patellofemoral-joint-loading-during-gait-are-increased-in-children-with-idiopathic-torsional-deformities
#20
Elyse Passmore, H Kerr Graham, Marcus G Pandy, Morgan Sangeux
BACKGROUND: Torsional deformities of the femur and tibia are associated with gait impairments and joint pain. Several studies have investigated these gait deviations in children with cerebral palsy. However, relatively little is known about gait deviations in children with idiopathic torsion and debate ensues about the management of these patients. RESEARCH QUESTION: What are the effects of idiopathic increased femoral neck anteversion and external tibial torsion on lower-limb kinematics, kinetics and joint loading during gait in children and adolescents...
May 9, 2018: Gait & Posture
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