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Slip and fall

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https://www.readbyqxmd.com/read/28553011/computational-fluid-dynamics-discrete-element-method-cfd-dem-study-of-mass-transfer-mechanisms-in-riser-flow
#1
Álvaro E Carlos Varas, E A J F Peters, J A M Kuipers
We report a computational fluid dynamics-discrete element method (CFD-DEM) simulation study on the interplay between mass transfer and a heterogeneous catalyzed chemical reaction in cocurrent gas-particle flows as encountered in risers. Slip velocity, axial gas dispersion, gas bypassing, and particle mixing phenomena have been evaluated under riser flow conditions to study the complex system behavior in detail. The most important factors are found to be directly related to particle cluster formation. Low air-to-solids flux ratios lead to more heterogeneous systems, where the cluster formation is more pronounced and mass transfer more influenced...
May 17, 2017: Industrial & Engineering Chemistry Research
https://www.readbyqxmd.com/read/28551911/-extrinsic-and-intrinsic-factors-for-falls-that-caused-hip-fracture
#2
Atzmon Tsur, Nael Shakeer, Zvi Segal, Dorit Itah, Dana Eluz
INTRODUCTION: Among the reasons described as possibly causing falls in older and elderly people are extrinsic factors such as bumping into objects, slipping on a wet floor, etc., and intrinsic factors - those that occur suddenly without warning. OBJECTIVES: To investigate the connection between the reasons for falls, extrinsic or intrinsic and different medical and nonmedical factors. METHODS: The survey included 82 people, 53 women and 29 men, who fell and broke their hip, underwent surgery, and were treated at the Rehabilitation Department...
May 2017: Harefuah
https://www.readbyqxmd.com/read/28543608/evaluation-of-a-state-based-syndromic-surveillance-system-for-the-classification-and-capture-of-non-fatal-occupational-injuries-and-illnesses-in-new-jersey
#3
Marija Borjan, Margaret Lumia
BACKGROUND: This preliminary study evaluates a real-time syndromic surveillance system to track occupationally-related emergency room visits throughout New Jersey. METHODS: Emergency Department (ED) chief complaint fields were evaluated from 79 of 80 hospitals in NJ in 2014, using work-related keywords and ICD-9 E-codes, to determine its ability to capture non-fatal work-related injuries. Sensitivity analysis and descriptive statistics, were used to evaluate and summarize the occupational injuries identified...
July 2017: American Journal of Industrial Medicine
https://www.readbyqxmd.com/read/28478945/arm-reactions-in-response-to-an-unexpected-slip-impact-of-aging
#4
Zachary Merrill, April J Chambers, Rakié Cham
Slips and falls represent a serious public safety concern in older adults, with the segment of the United States population over the age of 65 accounting for about three quarters of all fall related deaths. The majority of falls in older adults are due to trips and slips. The objective of this study was to investigate how age affects arm reactions generated in response to unexpected slips. Thirty-three participants divided into two age groups (16 young, 17 old) participated in this study. Participants were exposed to two conditions: known dry walking (baseline) and an unexpected slip initiated when stepping onto a glycerol-contaminated floor...
April 20, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28474271/can-recovery-foot-placement-affect-older-adults-slip-fall-severity
#5
Shuaijie Wang, Xuan Liu, Anna Lee, Yi-Chung Pai
Following a slip occurred in the overground walking, a fall can be classified into two exclusive categories: feet-forward fall or split fall. The purposes of this study were to investigate whether the placement of the recovery foot would determine the slip types, the likelihood of fall, and the severity associated with each fall. The fall severity was estimated based on the impact velocity of body segments or trunk orientation upon fall arrest. One hundred ninety-five participants experienced a novel, unannounced slip while walking on a 7-m walkway...
May 4, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28431747/effects-of-vibration-training-in-reducing-risk-of-slip-related-falls-among-young-adults-with-obesity
#6
Feng Yang, Jose Munoz, Long-Zhu Han, Fei Yang
This study examined the effects of controlled whole-body vibration training on reducing risk of slip-related falls in people with obesity. Twenty-three young adults with obesity were randomly assigned into either the vibration or placebo group. The vibration and placebo groups respectively received 6-week vibration and placebo training on a side-alternating vibration platform. Before and after the training, the isometric knee extensors strength capacity was measured for the two groups. Both groups were also exposed to a standardized slip induced by a treadmill during gait prior to and following the training...
May 24, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28411741/required-friction-during-overground-walking-is-lower-among-obese-compared-to-non-obese-older-men-but-does-not-differ-with-obesity-among-women
#7
Sara L Arena, Christina R Garman, Maury A Nussbaum, Michael L Madigan
Obesity and aging have been independently associated with altered required friction during walking, but it is unclear how these factors interact to influence the likelihood of slipping. Therefore, the purpose of this study was to determine whether there are differences related to obesity and aging on required friction during overground walking. Fourteen older non-obese, 11 older obese, 20 younger non-obese, and 20 younger obese adults completed walking trials at both a self-selected and hurried speed. When walking at a hurried speed, older obese men walked at a slower gait speed and exhibited lower frictional demands compared both to older non-obese men and to younger obese men...
July 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28382187/ultrasonographic-diagnosis-of-slipped-capital-femoral-epiphysis
#8
Manikandan Palaniappan, Venkatraman Indiran, Prabakaran Maduraimuthu
BACKGROUND: Slipped capital femoral epiphysis (SCFE), a fracture through the physis with resultant slip of the epiphysis, is the most common hip abnormality in adolescents and is a major cause of early osteoarthritis. Plain radiograph is the initial modality used to evaluate patients with painful hip joints. Ultrasonography and magnetic resonance imaging (MRI), which do not involve radiation exposure, have also been used. This case report supports the view that ultrasound can be used as an initial, cost-effective and radiation-free modality for the evaluation of suspected SCFE...
2017: Polish Journal of Radiology
https://www.readbyqxmd.com/read/28358519/diagnoses-of-traumatic-brain-injury-not-clearly-associated-with-deployment-active-component-u-s-armed-forces-2001-2016
#9
Valerie F Williams, Shauna Stahlman, Devin J Hunt, Francis L O'Donnell
From 2001 through 2016, a total of 276,858 active component service members received first-time diagnoses of traumatic brain injury (TBI). Person-time and incident cases of TBI were assigned to one of three groups. Group 1 included only service members' person-time before their first-ever deployments. Group 2 included service members' person-time during their overseas deployments and the 30 days after their return from deployment. Group 3 included only service members' person-time more than 30 days after return from deployment...
March 2017: MSMR
https://www.readbyqxmd.com/read/28299643/retention-of-the-first-trial-effect-in-gait-slip-among-community-living-older-adults
#10
Xuan Liu, Tanvi Bhatt, Shuaijie Wang, Feng Yang, Yi-Chung Clive Pai
"First-trial effect" characterizes the rapid adaptive behavior that changes the performance outcome (from fall to non-fall) after merely a single exposure to postural disturbance. The purpose of this study was to investigate how long the first-trial effect could last. Seventy-five (≥ 65 years) community-dwelling older adults, who were protected by an overhead full body harness system, were retested for a single slip 6-12 months after their initial exposure to a single gait-slip. Subjects' body kinematics that was used to compute their proactive (feedforward) and reactive (feedback) control of stability was recorded by an eight-camera motion analysis system...
February 2017: GeroScience
https://www.readbyqxmd.com/read/28285830/the-use-of-non-slip-socks-to-prevent-falls-among-hospitalized-older-adults-a-literature-review
#11
Benjamin Hartung, Michelle Lalonde
Falls among hospitalized older adults are a growing concern. Hospitals are using non-slip socks as an alternative footwear to help prevent falls, however there is limited evidence to support their use. The aim of this article is to review the literature on the effectiveness of non-slip socks to determine if there is sufficient evidence to support their use in the prevention of falls among hospitalized older adults. A comprehensive literature search was conducted using Medline, CINAHL, Scopus, PubMed and the Cochrane Library...
March 9, 2017: Geriatric Nursing
https://www.readbyqxmd.com/read/28269022/split-belt-controllable-treadmill-with-differential-velocity-based-fall-stimulation-and-motion-analysis
#12
Yasutaka Nakashima, Hiroki Noutsuka, Takanori Fukui, Motoji Yamamoto
Amid trends toward aging populations in developed nations, the number of people requiring nursing care has increased markedly. Slips and falls during ordinary daily activities are a common cause of fractured bones and muscle injury. Several studies have analyzed the movements produced by artificially generated slip and fall stimuli, but few have investigated these stimuli. We analyzed lower-limb motion following a slip and fall stimulus produced using a pulled free-walking system consisting of a controllable split-belt treadmill, where a speed difference between the belts could be applied to produce a slipping motion...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28255224/dual-task-does-not-increase-slip-and-fall-risk-in-healthy-young-and-older-adults-during-walking
#13
Rahul Soangra, Thurmon E Lockhart
Dual-task tests can identify gait characteristics peculiar to fallers and nonfallers. Understanding the relationship between gait performance and dual-task related cognitive-motor interference is important for fall prevention. Dual-task adapted changes in gait instability/variability can adversely affect fall risks. Although implicated, it is unclear if healthy participants' fall risks are modified by dual-task walking conditions. Seven healthy young and seven healthy older adults were randomly assigned to normal walking and dual-task walking sessions with a slip perturbation...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28227235/split-belt-controllable-treadmill-with-differential-velocity-based-fall-stimulation-and-motion-analysis
#14
Yasutaka Nakashima, Hiroki Noutsuka, Takanori Fukui, Motoji Yamamoto, Yasutaka Nakashima, Hiroki Noutsuka, Takanori Fukui, Motoji Yamamoto, Takanori Fukui, Hiroki Noutsuka, Yasutaka Nakashima, Motoji Yamamoto
Amid trends toward aging populations in developed nations, the number of people requiring nursing care has increased markedly. Slips and falls during ordinary daily activities are a common cause of fractured bones and muscle injury. Several studies have analyzed the movements produced by artificially generated slip and fall stimuli, but few have investigated these stimuli. We analyzed lower-limb motion following a slip and fall stimulus produced using a pulled free-walking system consisting of a controllable split-belt treadmill, where a speed difference between the belts could be applied to produce a slipping motion...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28220067/shared-and-task-specific-muscle-synergies-during-normal-walking-and-slipping
#15
Mohammad Moein Nazifi, Han Ul Yoon, Kurt Beschorner, Pilwon Hur
Falling accidents are costly due to their prevalence in the workplace. Slipping has been known to be the main cause of falling. Understanding the motor response used to regain balance after slipping is crucial to developing intervention strategies for effective recovery. Interestingly, studies on spinalized animals and studies on animals subjected to electrical microstimulation have provided major evidence that the Central Nervous System (CNS) uses motor primitives, such as muscle synergies, to control motor tasks...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28208109/stability-against-backward-balance-loss-age-related-modifications-following-slip-like-perturbations-of-multiple-amplitudes
#16
Dario Martelli, Federica Aprigliano, Peppino Tropea, Guido Pasquini, Silvestro Micera, Vito Monaco
Falls are one of the most serious problems in the elderly. Although previous studies clearly link the increased risk of falls with ageing, the mechanisms responsible for the modifications of reactive motor behaviours in response to external perturbations are not yet fully understood. This study investigated how the stability against backward balance loss is affected by aging and intensity of perturbations. The Margin of Stability (MoS) was estimated while eight young and eight elderly adults managed three slip-like perturbations of different intensities while walking at the same normalized speed...
February 9, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28160812/noise-and-neurotoxic-chemical-exposure-relationship-to-workplace-traumatic-injuries-a-review
#17
Cheryl Fairfield Estill, Carol H Rice, Thais Morata, Amit Bhattacharya
INTRODUCTION: More than 5,000 fatalities and eight million injuries occurred in the workplace in 2007 at a cost of $6 billion and $186 billion, respectively. Neurotoxic chemicals are known to affect central nervous system functions among workers, which include balance and hearing disorders. However, it is not known if there is an association between exposure to noise and solvents and acute injuries. METHOD: A thorough review was conducted of the literature on the relationship between noise or solvent exposures and hearing loss with various health outcomes...
February 2017: Journal of Safety Research
https://www.readbyqxmd.com/read/28154765/valgus-slipped-capital-femoral-epiphysis-in-patient-with-hypopituitarism
#18
Yoshihiro Kotoura, Yasuhiro Fujiwara, Tatsuro Hayashida, Koji Murakami, Satoshi Makio, Yuichi Shimizu, Yoshinobu Oka, Wook-Choel Kim, Taku Ogura, Toshikazu Kubo
Slipped capital femoral epiphysis (SCFE) is a common disease of adolescent and the epiphysis is positioned more posteromedially in relation to the femoral neck shaft with varus SCFE; however, posterolateral displacement of the capital epiphysis, valgus SCFE, occurs less frequently. We report a case of valgus SCFE in a 17-year-old boy with hypopituitarism. After falling down, he experienced difficulty in walking. The radiographs were inconclusive; however three-dimensional computed tomography images showed lateral displacement of the epiphysis on the right femoral head...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/28131487/effects-of-obesity-on-dynamic-stability-control-during-recovery-from-a-treadmill-induced-slip-among-young-adults
#19
Feng Yang, JaeEun Kim, Fei Yang
This study sought to investigate the effects of obesity on falls and dynamic stability control in young adults when subject to a standardized treadmill-induced gait-slip. Forty-four young adults (21 normal-weight and 23 obese) participated in this study. After their muscle strength was assessed at the right knee under maximum voluntary isometric (flexion and extension) contractions, participants were moved to an ActiveStep treadmill. Following 5 normal walking trials on the treadmill, all participants encountered an identical and unexpected slip defined as a perturbation in the anterior direction with the magnitude of 24-cm slip distance and 2...
February 28, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28098743/analysis-of-incident-and-accident-reports-and-risk-management-in-spine-surgery
#20
Kazuyoshi Kobayashi, Shiro Imagama, Kei Ando, Tetsuro Hida, Kenyu Ito, Mikito Tsushima, Yoshimoto Ishikawa, Akiyuki Matsumoto, Masayoshi Morozumi, Yoshihiro Nishida, Yoshimasa Nagao, Naoki Ishiguro
STUDY DESIGN: A review of accident and incident reports. OBJECTIVE: To analyze prevalence, characteristics, and details of perioperative incidents and accidents in patients receiving spine surgery. SUMMARY OF BACKGROUND DATA: In our institution, a clinical error that potentially results in an adverse event is usually submitted as an incident or accident report through a web database, to ensure anonymous and blame-free reporting. All reports are analyzed by a medical safety management group...
January 16, 2017: Spine
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