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Musculoskeletal system

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https://www.readbyqxmd.com/read/28814022/estimating-anatomical-wrist-joint-motion-with-a-robotic-exoskeleton
#1
Chad G Rose, Claudia K Kann, Ashish D Deshpande, Marcia K O'Malley
Robotic exoskeletons can provide the high intensity, long duration targeted therapeutic interventions required for regaining motor function lost as a result of neurological injury. Quantitative measurements by exoskeletons have been proposed as measures of rehabilitative outcomes. Exoskeletons, in contrast to end effector designs, have the potential to provide a direct mapping between human and robot joints. This mapping rests on the assumption that anatomical axes and robot axes are aligned well, and that movement within the exoskeleton is negligible...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28814008/self-aligning-exoskeleton-hip-joint-kinematic-design-with-five-revolute-three-prismatic-and-one-ball-joint
#2
Jonas Beil, Charlotte Marquardt, Tamim Asfour
Kinematic compatibility is of paramount importance in wearable robotic and exoskeleton design. Misalignments between exoskeletons and anatomical joints of the human body result in interaction forces which make wearing the exoskeleton uncomfortable and even dangerous for the human. In this paper we present a kinematically compatible design of an exoskeleton hip to reduce kinematic incompatibilities, so called macro- and micro-misalignments, between the human's and exoskeleton's joint axes, which are caused by inter-subject variability and articulation...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813846/closed-loop-emg-informed-model-based-analysis-of-human-musculoskeletal-mechanics-on-rough-terrains
#3
C Varotto, Z Sawacha, L Gizzi, D Farina, M Sartori
This work aims at estimating the musculoskeletal forces acting in the human lower extremity during locomotion on rough terrains. We employ computational models of the human neuro-musculoskeletal system that are informed by multi-modal movement data including foot-ground reaction forces, 3D marker trajectories and lower extremity electromyograms (EMG). Data were recorded from one healthy subject locomoting on rough grounds realized using foam rubber blocks of different heights. Blocks arrangement was randomized across all locomotion trials to prevent adaptation to specific ground morphology...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813821/gait-training-assist-system-of-a-lower-limb-prosthetic-visualizing-muscle-activation-pattern-using-a-color-depth-sensor
#4
Kunihiro Ogata, Tomoki Mita, Toshiaki Tsuji, Yoshio Matsumoto
Some unilateral lower-limb amputees load the intact limb more than the prosthetic limb. This can cause chronic pains, fatigue, lumbago, and joint diseases, including knee osteoarthritis. To avoid and counteract these symptoms it is necessary to improve their asymmetric gait. Increasing the function of the hip abductor muscle is important to maintaining symmetrical weight distribution. Therefore, the purpose of this study is to develop a training assist system, which estimates and visualizes an abductor muscle by using a color-depth sensor...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28810983/evaluation-of-a-novel-field-expedient-musculoskeletal-readiness-screening-tool-in-an-army-basic-training-population
#5
Darren Hearn, Daniel Rhon, Donald Goss, Mark Thelen
BACKGROUND: Musculoskeletal injuries present a significant challenge to military readiness accounting for over 29% of ambulatory medical visits and 25 million limited duty days across the U.S. Army. Although U.S. Military Health Systems perform periodic general health and deployment assessments, there is no validated tool to determine when a service member is at increased risk of sustaining a musculoskeletal injury. METHOD: 292 U.S. Army basic training recruits completed a novel injury screening test called the Musculoskeletal Readiness Screening Tool (MRST)...
July 2017: Military Medicine
https://www.readbyqxmd.com/read/28802327/three-dimensional-motion-capture-applied-to-violin-playing-a-study-on-feasibility-and-characterization-of-the-motor-strategy
#6
Andrea Ancillao, Bernardo Savastano, Manuela Galli, Giorgio Albertini
BACKGROUND AND OBJECTIVE: Playing string instruments requires advanced motor skills and a long training that is often spent in uncomfortable postures that may lead to injuries or musculoskeletal disorders. Thus, it is interesting to objectively characterize the motor strategy adopted by the players. In this work, we implemented a method for the quantitative analysis of the motor performance of a violin player. METHODS: The proposed protocol takes advantage of an optoelectronic system and some infra-red reflecting markers in order to track player's motion...
October 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28800763/causes-trends-and-severity-of-musculoskeletal-injuries-in-ghana
#7
Eric Lawer Torgbenu, Emmanuel K Nakua, Henry Kyei, Eric Badu, Maxwell Peprah Opoku
BACKGROUND: Musculoskeletal [MSK] injuries are common causes of long-term pain and physical disability which affect many people worldwide. The economic and social impacts on the individual, society and national health systems are enormous making a matter of public health concern. Therefore, this study examined the causes and extent of MSK injuries in a referral hospital in Ghana. METHODS: A prospective study design with consecutive sampling method was used to recruit patients admitted at Trauma Unit as well as those receiving orthopaedic reviews at St...
August 11, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28796797/chaotic-itinerancy-within-the-coupled-dynamics-between-a-physical-body-and-neural-oscillator-networks
#8
Jihoon Park, Hiroki Mori, Yuji Okuyama, Minoru Asada
Chaotic itinerancy is a phenomenon in which the state of a nonlinear dynamical system spontaneously explores and attracts certain states in a state space. From this perspective, the diverse behavior of animals and its spontaneous transitions lead to a complex coupled dynamical system, including a physical body and a brain. Herein, a series of simulations using different types of non-linear oscillator networks (i.e., regular, small-world, scale-free, random) with a musculoskeletal model (i.e., a snake-like robot) as a physical body are conducted to understand how the chaotic itinerancy of bodily behavior emerges from the coupled dynamics between the body and the brain...
2017: PloS One
https://www.readbyqxmd.com/read/28796755/the-effect-of-lumbar-disc-herniation-on-musculoskeletal-loadings-in-the-spinal-region-during-level-walking-and-stair-climbing
#9
Shengzheng Kuai, Zhenhua Liao, Wenyu Zhou, Xinyu Guan, Run Ji, Rui Zhang, Daiqi Guo, Weiqiang Liu
BACKGROUND People with low back pain (LBP) alter their motion patterns during level walking and stair climbing due to pain or fear. However, the alternations of load sharing during the two activities are largely unknown. The objective of this study was to investigate the effect of LBP caused by lumbar disc herniation (LDH) on the muscle activities of 17 main trunk muscle groups and the intradiscal forces acting on the five lumbar discs. MATERIAL AND METHODS Twenty-six healthy adults and seven LDH patients were recruited to perform level walking and stair climbing in the Gait Analysis Laboratory...
August 10, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28796122/ocular-surface-lubricants
#10
Leonard Bielory, Preeti Wagle
PURPOSE OF REVIEW: The purpose of this article is to provide an overview of the ocular lubricants currently available, consider the components of the various formulations and highlight the status of preservative use in the treatment of anterior ocular surface diseases. RECENT FINDINGS: The primary components of ocular surface lubrication have been, in the past, based on various cellulose formulations that increase hydration. Advances in lubrication have come from areas of the human body requiring lubrication such as the skeletal joints as well as examining the use of natural components of the tear fluid...
August 8, 2017: Current Opinion in Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28795294/how-long-does-antimycobacterial-antibiotic-loaded-bone-cement-have-in-vitro-activity-for-musculoskeletal-tuberculosis
#11
Jae Hoo Lee, Chang Dong Han, Sang-Nae Cho, Ick Hwan Yang, Woo Suk Lee, Seung-Hun Baek, Jae Won Shin, Khalid Elfadil Ibrahim Husein, Kwan Kyu Park
BACKGROUND: Antibiotic-loaded bone cement is accepted as an effective treatment modality for musculoskeletal tuberculosis. However, comparative information regarding combinations and concentrations of second-line antimycobacterial drugs, such as streptomycin and amoxicillin and clavulanic acid, are lacking. QUESTIONS/PURPOSES: (1) In antibiotic-loaded cement, is there effective elution of streptomycin and Augmentin(®) (amoxicillin and clavulanic acid) individually and in combination? (2) What is the antibacterial activity duration for streptomycin- and amoxicillin and clavulanic acid -loaded cement? METHODS: Six different types of bone cement discs were created by mixing 40 g bone cement with 1 or 2 g streptomycin only, 0...
August 9, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28794875/the-humtick-study-protocol-for-a-prospective-cohort-study-on-post-treatment-lyme-disease-syndrome-and-the-disease-and-cost-burden-of-lyme-borreliosis-in-belgium
#12
Laurence Geebelen, Tinne Lernout, Benoît Kabamba-Mukadi, Veroniek Saegeman, Hein Sprong, Steven Van Gucht, Philippe Beutels, Niko Speybroeck, Katrien Tersago
BACKGROUND: In Belgium, different routine surveillance systems are in place to follow-up Lyme borreliosis trends. However, accurate data on the disease and monetary burden for the different clinical manifestations are lacking. Despite recommended antibiotic treatment, a proportion of Lyme patients report persisting aspecific symptoms for six months or more (e.g. fatigue, widespread musculoskeletal pain, cognitive difficulties), a syndrome now named "post-treatment Lyme disease syndrome" (PTLDS)...
2017: Archives of Public Health, Archives Belges de Santé Publique
https://www.readbyqxmd.com/read/28794190/model-of-rhythmic-ball-bouncing-using-a-visually-controlled-neural-oscillator
#13
Guillaume Avrin, Isabelle Anne Siegler, Maria Makarov, Pedro Rodriguez-Ayerbe
The present paper investigates the sensory-driven modulations of Central Pattern Generators dynamics that can be expected to reproduce human behavior during rhythmic hybrid tasks. We propose a theoretical model of human sensorimotor behavior able to account for the observed data from the ball-bouncing task. The novel control architecture is composed of a Matsuoka neural oscillator parametrically controlled by a sensorimotor controller and coupled with the environment through visual sensory feedback. The architecture's ability to reproduce human-like performance during the ball-bouncing task in the presence of perturbations is quantified by comparison of simulated and recorded trials...
August 9, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28794161/how-pigeons-couple-three-dimensional-elbow-and-wrist-motion-to-morph-their-wings
#14
Amanda K Stowers, Laura Y Matloff, David Lentink
Birds change the shape and area of their wings to an exceptional degree, surpassing insects, bats and aircraft in their ability to morph their wings for a variety of tasks. This morphing is governed by a musculoskeletal system, which couples elbow and wrist motion. Since the discovery of this effect in 1839, the planar 'drawing parallels' mechanism has been used to explain the coupling. Remarkably, this mechanism has never been corroborated from quantitative motion data. Therefore, we measured how the wing skeleton of a pigeon (Columba livia) moves during morphing...
August 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28793068/incorporation-of-new-medicines-by-the-national-commission-for-incorporation-of-technologies-2012-to-june-2016
#15
Rosângela Caetano, Rondineli Mendes da Silva, Érica Militão Pedro, Ione Ayala Gualandi de Oliveira, Aline Navega Biz, Pamela Santana
The National Commission for incorporation of Health Technologies (CONITEC), established in 2011, advises the Ministry of Health in decisions related to the incorporation, exclusion or change of medicines, products and procedures in the Unified Health System (SUS).The study investigated the decision-making process, profile of demands and incorporation of new medicines in the SUS from January/2012 to June/2016, based on data available on the CONITEC website. All submissions were evaluated and characterized by technology and applicant type...
August 2017: Ciência & Saúde Coletiva
https://www.readbyqxmd.com/read/28792953/local-weather-is-associated-with-rates-of-online-searches-for-musculoskeletal-pain-symptoms
#16
Scott Telfer, Nick Obradovich
Weather conditions are commonly believed to influence musculoskeletal pain, however the evidence for this is mixed. This study aimed to examine the relationship between local meteorological conditions and online search trends for terms related to knee pain, hip pain, and arthritis. Five years of relative online search volumes for these terms were obtained for the 50 most populous cities in the contiguous United States, along with corresponding local weather data for temperature, relative humidity, barometric pressure, and precipitation...
2017: PloS One
https://www.readbyqxmd.com/read/28791436/musculoskeletal-health-in-newly-diagnosed-children-with-crohn-s-disease
#17
L M Ward, J Ma, F Rauch, E I Benchimol, J Hay, M B Leonard, M A Matzinger, N Shenouda, B Lentle, H Cosgrove, M Scharke, V N Konji, D R Mack
We evaluated the impact of Crohn's disease on muscle and bone strength, mass, density, and geometry in children with newly diagnosed CD and found profound muscle and bone deficits; nevertheless, the prevalence of vertebral fractures at this time point was low. INTRODUCTION: Crohn's disease (CD) is an inflammatory condition of the gastrointestinal tract that can affect the musculoskeletal system. The objective of this study was to determine the prevalence of vertebral fractures and the impact of CD on muscle and bone mass, strength, density, and geometry in children with newly diagnosed CD...
August 8, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28791026/decrease-of-markers-related-to-bone-erosion-in-serum-of-patients-with-musculoskeletal-disorders-after-serial-low-dose-radon-spa-therapy
#18
Aljona Cucu, Kateryna Shreder, Daniela Kraft, Paul Friedrich Rühle, Gerhart Klein, Gerhard Thiel, Benjamin Frey, Udo S Gaipl, Claudia Fournier
Musculoskeletal disorders (MSDs) are the most frequent cause of disability in Europe. Reduced mobility and quality of life of the patients are often associated with pain due to chronic inflammation. The inflammatory process, accompanied by a destruction of the cartilage and bone tissue, is discussed as a result of (A) the infiltration of immune cells into the joints, (B) an altered homeostasis of the joint cavity (synovium) with a critical role of bone remodeling cells, and (C) release of inflammatory factors including adipokines in the arthritic joint...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28790344/morbidity-pattern-of-traditional-chinese-medicine-primary-care-in-the-hong-kong-population
#19
Wendy Wong, Cindy Lo Kuen Lam, Xiang Zhao Bian, Zhang Jin Zhang, Sze Tuen Ng, Shong Tung
Primary care manages >90% of illnesses requiring medical services in Hong Kong, in which 9,513 registered Chinese medicine practitioners (CMPs) provide 8.2% of the consultations. This is the first study aimed to determine the morbidity pattern in different Traditional Chinese Medicine (TCM) primary care settings in Chinese population. 55,312 patients' encounters were classified by the International Classification of Primary Care-2 (ICPC-2) from 260 of CMPs. Mean patient age was 50.5 years, with more females than males (67...
August 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28789791/serious-mental-illness-and-medical-comorbidities-findings-from-an-integrated-health-care-system
#20
Amber L Bahorik, Derek D Satre, Andrea H Kline-Simon, Constance M Weisner, Cynthia I Campbell
OBJECTIVE: To examine the odds associated with having medical comorbidities among patients with serious mental illness (SMI) in a large integrated health system. METHOD: In a secondary analysis of electronic health record data, this study identified 25,090 patients with an ICD-9 SMI diagnosis of bipolar disorder (n=20,308) or schizophrenia (n=4782) and 25,090 controls who did not have a SMI, matched on age, gender, and medical home facility. Conditional logistic regressions compared the odds associated with having nine medical comorbidity categories and fifteen chronic or serious conditions among patients with SMI versus controls...
September 2017: Journal of Psychosomatic Research
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