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https://www.readbyqxmd.com/read/28817701/effect-of-exoskeletal-joint-constraint-and-passive-resistance-on-metabolic-energy-expenditure-implications-for-walking-in-paraplegia
#1
Sarah R Chang, Rudi Kobetic, Ronald J Triolo
An important consideration in the design of a practical system to restore walking in individuals with spinal cord injury is to minimize metabolic energy demand on the user. In this study, the effects of exoskeletal constraints on metabolic energy expenditure were evaluated in able-bodied volunteers to gain insight into the demands of walking with a hybrid neuroprosthesis after paralysis. The exoskeleton had a hydraulic mechanism to reciprocally couple hip flexion and extension, unlocked hydraulic stance controlled knee mechanisms, and ankles fixed at neutral by ankle-foot orthoses...
2017: PloS One
https://www.readbyqxmd.com/read/28816960/successful-open-reduction-and-internal-fixation-for-displaced-femoral-fracture-in-a-patient-with-osteopetrosis-case-report-and-lessons-learned
#2
Jiangfa Huang, Jianke Pan, Mingtao Xu, Shuchai Xu
RATIONALE: Osteopetrosis is a rare disease that predominantly occurs in descendants of inbreeding families. In the case of fractures happen in patients with osteopetrosis, the choice between operative or conservative treatment is still controversial. Open reduction and internal fixation (ORIF) is a conventional treatment for fractures, and it possesses more applicability than conservative treatment. During this surgical treatment, ensure that bone union in the right way is pivotal to success and simultaneously prevents refracture and displacement after the operation...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28816893/periarticular-liposomal-bupivacaine-injection-versus-intra-articular-bupivacaine-infusion-catheter-for-analgesia-after-total-knee-arthroplasty-a-double-blinded-randomized-controlled-trial
#3
Eric B Smith, Gregory S Kazarian, Mitchell G Maltenfort, Jess H Lonner, Peter F Sharkey, Robert P Good
BACKGROUND: Intra-articular bupivacaine hydrochloride (HCl) infusion catheters and periarticular injections of liposomal bupivacaine are often used as postoperative local anesthetics. The purpose of this study was to compare the efficacies of these local anesthetics following total knee arthroplasty. METHODS: This study was a superiority trial with a randomized, controlled, double-blinded design. Patients were randomly assigned to either delivery of bupivacaine HCl by the ON-Q* Pain Relief System pump (n = 96) or by an injection of Exparel (liposomal bupivacaine) (n = 104)...
August 16, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28816754/health-care-services-in-ibd-factors-associated-with-service-utilization-and-preferences-for-service-options-for-routine-and-urgent-care
#4
Matthew T Bernstein, John R Walker, Tarun Chhibba, Melony Ivekovic, Harminder Singh, Laura E Targownik, Charles N Bernstein
BACKGROUND: We aimed to explore factors associated with health service utilization and preference for services, including alternatives to attending the emergency department (ED) when experiencing mild to moderate or severe symptoms. METHODS: A total of 1143 persons (46% response rate) aged 18 to 65 years in the population-based University of Manitoba IBD Research Registry participated in the survey. RESULTS: Although 61% had a gastroenterologist, when experiencing active symptoms, only 29% felt they could call their gastroenterologist for an urgent appointment, and 42% could call their gastroenterologist for telephone advice...
September 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28816750/health-care-services-in-ibd-factors-associated-with-service-utilization-and-preferences-for-service-options-for-routine-and-urgent-care
#5
Matthew T Bernstein, John R Walker, Tarun Chhibba, Melony Ivekovic, Harminder Singh, Laura E Targownik, Charles N Bernstein
BACKGROUND: We aimed to explore factors associated with health service utilization and preference for services, including alternatives to attending the emergency department (ED) when experiencing mild to moderate or severe symptoms. METHODS: A total of 1143 persons (46% response rate) aged 18 to 65 years in the population-based University of Manitoba IBD Research Registry participated in the survey. RESULTS: Although 61% had a gastroenterologist, when experiencing active symptoms, only 29% felt they could call their gastroenterologist for an urgent appointment, and 42% could call their gastroenterologist for telephone advice...
August 14, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28816673/generating-arm-swing-trajectories-in-real-time-using-a-data-driven-model-for-gait-rehabilitation-with-self-selected-speed
#6
Babak Hejrati, Andrew S Merryweather, Jake J Abbott
Gait rehabilitation is often focused on the legs, and overlooks the role of the upper limbs. However, a variety of studies have demonstrated the importance of proper arm swing both during healthy walking and during rehabilitation. In this paper, we describe a method for generating proper arm-swing trajectories in real-time using only measurements of the angular velocity of a person's thighs, to be used during gait rehabilitation with self-selected walking speed. A datadriven linear time-invariant transfer function is developed, using frequency-response methods, which captures the frequencydependent magnitude and phase relationship between the thighs' angular velocities and the arm angles (measured at the shoulder, in the sagittal plane), using a data set of 30 healthy adult subjects...
August 14, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28816573/a-longitudinal-study-investigating-how-stroke-severity-disability-and-physical-function-the-first-week-post-stroke-are-associated-with-walking-speed-six-months-post-stroke
#7
Mona Kristin Aaslund, Rolf Moe-Nilssen, Bente Bassøe Gjelsvik, Bård Bogen, Halvor Næss, Håkon Hofstad, Jan Sture Skouen
OBJECTIVES: To investigate to which degree stroke severity, disability, and physical function the first week post-stroke are associated with preferred walking speed (PWS) at 6 months. DESIGN: Longitudinal observational study. METHOD: Participants were recruited from a stroke unit and tested within the first week (baseline) and at 6 months post-stroke. Outcome measures were the National Institutes of Health Stroke Scale (NIHSS), the Barthel Index (BI), modified Rankin Scale (mRS), PWS, Postural Assessment Scale for Stroke (PASS), and the Trunk Impairment Scale modified-Norwegian version...
August 17, 2017: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/28816483/effect-of-travel-speed-on-the-visual-control-of-steering-toward-a-goal
#8
Rongrong Chen, Diederick C Niehorster, Li Li
Previous studies have proposed that people can use visual cues such as the instantaneous direction (i.e., heading) or future path trajectory of travel specified by optic flow or target visual direction in egocentric space to steer or walk toward a goal. In the current study, we examined what visual cues people use to guide their goal-oriented locomotion and whether their reliance on such visual cues changes as travel speed increases. We presented participants with optic flow displays that simulated their self-motion toward a target at various travel speeds under two viewing conditions in which we made target egocentric direction available or unavailable for steering...
August 17, 2017: Journal of Experimental Psychology. Human Perception and Performance
https://www.readbyqxmd.com/read/28815878/prediction-of-energy-expenditure-during-walking-in-adults-with-down-syndrome
#9
Stamatis Agiovlasitis, Goncalo V Mendonca, Jeffrey A McCubbin, Bo Fernhall
BACKGROUND: When developing walking programmes for improving health in adults with Down syndrome (DS), physical activity professionals are in need of an equation for predicting energy expenditure. We therefore developed and cross-validated an equation for predicting the rate of oxygen uptake (VO2 ; an index of energy expenditure) for adults with and without DS. METHOD: A total of 469 VO2 observations during walking across different speeds were available from 54 adults with DS and 61 adults without DS...
August 16, 2017: Journal of Applied Research in Intellectual Disabilities: JARID
https://www.readbyqxmd.com/read/28815571/functional-electrical-stimulation-of-the-ankle-dorsiflexors-during-walking-in-spastic-cerebral-palsy-a-systematic-review
#10
REVIEW
Irene Moll, Johannes S H Vles, Dan L H M Soudant, Adhiambo M A Witlox, Heleen M Staal, Lucianne A W M Speth, Yvonne J M Janssen-Potten, Marcel Coenen, Suzanne M Koudijs, R Jeroen Vermeulen
AIM: To assess the effect of functional electrical stimulation (FES) of ankle dorsiflexors in children and adolescents with spastic cerebral palsy (CP) during walking. METHOD: A systematic review was performed using the American Academy of Cerebral Palsy and Developmental Medicine methodology and the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Six databases were searched for studies applying interventions to patients aged younger than 20 years...
August 17, 2017: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/28815562/treadmill-training-and-body-weight-support-for-walking-after-stroke
#11
REVIEW
Jan Mehrholz, Simone Thomas, Bernhard Elsner
BACKGROUND: Treadmill training, with or without body weight support using a harness, is used in rehabilitation and might help to improve walking after stroke. This is an update of the Cochrane review first published in 2003 and updated in 2005 and 2014. OBJECTIVES: To determine if treadmill training and body weight support, individually or in combination, improve walking ability, quality of life, activities of daily living, dependency or death, and institutionalisation or death, compared with other physiotherapy gait-training interventions after stroke...
August 17, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28814848/pathophysiological-mechanism-of-long-term-noninvasive-ventilation-in-stable-hypercapnic-patients-with-copd-using-functional-respiratory-imaging
#12
Bita Hajian, Jan De Backer, Claire Sneyers, Francisca Ferreira, Katherine C Barboza, Glenn Leemans, Wim Vos, Wilfried De Backer
INTRODUCTION: Patients with severe COPD often develop chronic hypercapnic respiratory failure. Their prognosis worsens and they are more likely to develop exacerbations. This has major influence on the health-related quality of life. Currently, there is no information about the success of long-term noninvasive ventilation (NIV) among patients who receive NIV in acute settings. Also, little is known about the pathophysiological mechanism of NIV. METHODS: Ten Global Initiative for Obstructive Lung Disease stage III and IV COPD patients with respiratory failure who were hospitalized following acute exacerbation were treated with NIV using a Synchrony BiPAP device for 6 months...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28814664/pulmonary-arterial-hypertension-treatment-with-carvedilol-for-heart-failure-a-randomized-controlled-trial
#13
Samar Farha, Didem Saygin, Margaret M Park, Hoi I Cheong, Kewal Asosingh, Suzy Aa Comhair, Olivia R Stephens, Emir C Roach, Jacqueline Sharp, Kristin B Highland, Frank P DiFilippo, Donald R Neumann, W H Wilson Tang, Serpil C Erzurum
BACKGROUND: Right-sided heart failure is the leading cause of death in pulmonary arterial hypertension (PAH). Similar to left heart failure, sympathetic overactivation and β-adrenoreceptor (βAR) abnormalities are found in PAH. Based on successful therapy of left heart failure with β-blockade, the safety and benefits of the nonselective β-blocker/vasodilator carvedilol were evaluated in PAH. METHODS: PAH Treatment with Carvedilol for Heart Failure (PAHTCH) is a single-center, double-blind, randomized, controlled trial...
August 17, 2017: JCI Insight
https://www.readbyqxmd.com/read/28814056/design-of-a-lightweight-tethered-torque-controlled-knee-exoskeleton
#14
Kirby Ann Witte, Andreas M Fatschel, Steven H Collins
Lower-limb exoskeletons show promise for improving gait rehabilitation for those with chronic gait abnormalities due to injury, stroke or other illness. We designed and built a tethered knee exoskeleton with a strong lightweight frame and comfortable, four-point contact with the leg. The device is structurally compliant in select directions, instrumented to measure joint angle and applied torque, and is lightweight (0.76 kg). The exoskeleton is actuated by two off-board motors. Closed loop torque control is achieved using classical proportional feedback control with damping injection in conjunction with iterative learning...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28814055/twiice-a-lightweight-lower-limb-exoskeleton-for-complete-paraplegics
#15
Tristan Vouga, Romain Baud, Jemina Fasola, Mohamed Bouri, Hannes Bleuler
This paper introduces TWIICE, a lower-limb exoskeleton that enables people suffering from complete paraplegia to stand up and walk again. TWIICE provides complete mobilization of the lower-limbs, which is a first step toward enabling the user to regain independence in activities of the daily living. The tasks it can perform include level and inclined walking (up to 20° slope), stairs ascent and descent, sitting on a seat, and standing up. Participation in the world's first Cybathlon (Zurich, 2016) demonstrated good performance at these demanding tasks...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28814050/segmental-contributions-to-sagittal-plane-whole-body-angular-momentum-when-using-powered-compared-to-passive-ankle-foot-prostheses-on-ramps
#16
Nathaniel T Pickle, Anne K Silverman, Jason M Wilken, Nicholas P Fey
Understanding the effects of an assistive device on dynamic balance is crucial, particularly for robotic leg prostheses. Analyses of dynamic balance commonly evaluate the range of whole-body angular momentum (H). However, the contributions of individual body segments to overall H throughout gait may yield futher insights, specifically for people with transtibial amputation using powered prostheses. We evaluated segment contributions to H using Statistical Parametric Mapping to assess the effects of prosthesis type (powered vs passive) and ramp angle on segmental coordination...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28814046/adaptive-control-of-an-actuated-ankle-foot-orthosis
#17
Victor Arnez-Paniagua, Hala Rifai, Yacine Amirat, Samer Mohammed
This paper deals with the control of an active ankle foot orthosis (AAFO) to assist the gait of paretic patients. The AAFO system is driven by both, the residual human torque delivered by the muscles spanning the ankle joint and the AAFO's actuator's torque. A projection-based model reference adaptive control is proposed to assist dorsiflexion and plantar-flexion of the ankle joint during daily living walking activities. Unlike most classical model-based controllers, the proposed one does not require any prior estimation of the system's (foot-AAFO) parameters...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28814045/across-user-adaptation-for-a-powered-lower-limb-prosthesis
#18
John A Spanias, Ann M Simon, Levi J Hargrove
Pattern recognition algorithms have been used to control powered lower limb prostheses because they are capable of identifying the intent of the amputee user and therefore can provide a method for seamlessly transitioning between the different locomotion modes of the prosthesis. However, one major limitation of current algorithms is that they require subject-specific data from the individual user. These data are difficult and time-consuming to collect and consequently these algorithms do not generalize well across users...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28814044/a-survey-of-stakeholder-perspectives-on-a-proposed-combined-exoskeleton-wheelchair-technology
#19
Tim Bhatnagar, W Ben Mortensen, Johanne Mattie, Jamie Wolff, Claire Parker, Jaimie Borisoff
BACKGROUND: Exoskeleton technology has potential benefits for wheelchair users' health and mobility. However, there are practical barriers to their everyday use as a mobility device. In particular, challenges related to travelling longer distances and transitioning between using a wheelchair and exoskeleton walking may present significant deterrents to regular exoskeleton use. In an effort to remove these barriers, a combined exoskeleton-wheelchair concept ('COMBO') has been proposed, which aims to achieve the benefits of both these mobility technologies...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28814042/portable-haptic-device-for-lower-limb-amputee-gait-feedback-assessing-static-and-dynamic-perceptibility
#20
M A B Husman, H F Maqbool, M I Awad, A A Dehghani-Sanij
Loss of joints and severed sensory pathway cause reduced mobility capabilities in lower limb amputees. Although prosthetic devices attempt to restore normal mobility functions, lack of awareness and control of limb placement increase the risk of falling and causing amputee to have high level of visual dependency. Haptic feedback can serve as a cue for gait events during ambulation thus providing sense of awareness of the limb position. This paper presents a wireless wearable skin stretch haptic device to be fitted around the thigh region...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
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