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https://www.readbyqxmd.com/read/28433387/how-do-rocker-soled-shoes-influence-the-knee-adduction-moment-in-people-with-knee-osteoarthritis-an-analysis-of-biomechanical-mechanisms
#1
Elizabeth G Madden, Crystal O Kean, Tim V Wrigley, Kim L Bennell, Rana S Hinman
The primary objective was to examine mechanisms behind previously observed changes in the knee adduction moment (KAM) with rocker-soled shoes, in participants sub-grouped according to whether they experienced an immediate decrease, or increase, in peak KAM. In subgroups where frontal plane knee ground reaction force (GRF) lever-arm emerged as a significant predictor, a secondary aim was to examine biomechanical factors that contributed to change in this parameter. Thirty individuals with symptomatic, radiographic knee osteoarthritis (OA) underwent 3D gait analysis in unstable rocker-soled shoes and non-rocker-soled shoes...
April 9, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28419537/electromagnetic-tracking-for-femoral-derotation-osteotomy-an-in-vivo-study
#2
Andreas Geisbüsch, Christoph Auer, Hartmut Dickhaus, Cornelia Putz, Thomas Dreher
Femoral derotation osteotomy delivers good to excellent results in the treatment of rotational gait abnormalities and especially in internal rotation gait. The outcome of the procedure has been evaluated in numerous short and long term studies. Although reasons for recurrence and over-/under-correction have been unveiled in earlier studies the mechanisms are still not fully understood. False intra-operative assessment of the derotation angle may contribute to imprecise outcomes. In a recent saw-bone study we evaluated an electromagnetic tracking system in comparison to conventional goniometer measurement and a CT reference measurement and found it to be extremely accurate, whereas the use of a conventional goniometer for derotation measurement showed a high inter- and intra-rater variability...
April 17, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28414497/dual-tasking-in-parkinson-s-disease-cognitive-consequences-while-walking
#3
Robert D Salazar, Xiaolin Ren, Terry D Ellis, Noor Toraif, Olivier J Barthelemy, Sandy Neargarder, Alice Cronin-Golomb
OBJECTIVE: Cognitive deficits are common in Parkinson's disease (PD) and exacerbate the functional limitations imposed by PD's hallmark motor symptoms, including impairments in walking. Though much research has addressed the effect of dual cognitive-locomotor tasks on walking, less is known about their effect on cognition. The purpose of this study was to investigate the relation between gait and executive function, with the hypothesis that dual tasking would exacerbate cognitive vulnerabilities in PD as well as being associated with gait disturbances...
April 17, 2017: Neuropsychology
https://www.readbyqxmd.com/read/28412603/impairments-of-balance-stepping-reactions-and-gait-in-people-with-cervical-dystonia
#4
Christopher Barr, Rhiannon Barnard, Lauren Edwards, Sheila Lennon, Lynley Bradnam
BACKGROUND: Impaired balance is common in neurological disorders. Cervical dystonia is a neurological movement disorder affecting the neck. The effect of this aberrant head posture on physical function is unknown. OBJECTIVES: To compare balance, mobility, gait and stepping reactions between ten people with cervical dystonia and ten control adults. METHODS: Spatiotemporal gait parameters and walking speed were assessed using a computerised walkway...
April 4, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28411445/comparison-of-the-classifier-oriented-gait-score-and-the-gait-profile-score-based-on-imitated-gait-impairments
#5
Christian Josef, Kröll Josef, Schwameder Hermann
Common summary measures of gait quality such as the Gait Profile Score (GPS) are based on the principle of measuring a distance from the mean pattern of a healthy reference group in a gait pattern vector space. The recently introduced Classifier Oriented Gait Score (COGS) is a pathology specific score that measures this distance in a unique direction, which is indicated by a linear classifier. This approach has potentially improved the discriminatory power to detect subtle changes in gait patterns but does not incorporate a profile of interpretable sub-scores like the GPS...
April 5, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28411443/assessment-of-stability-during-gait-in-patients-with-spinal-deformity-a-preliminary-analysis-using-the-dynamic-stability-margin
#6
Anne-Laure Simon, Vipul Lugade, Kathie Bernhardt, A Noelle Larson, Kenton Kaufman
Daily living activities are dynamic, requiring spinal motion through space. Current assessment of spinal deformities is based on static measurements from full-spine standing radiographs. Tools to assess dynamic stability during gait might be useful to enhance the standard evaluation. The aim of this study was to evaluate gait dynamic imbalance in patients with spinal deformity using the dynamic stability margin (DSM). Twelve normal subjects and 17 patients with spinal deformity were prospectively recruited...
April 5, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28411441/longitudinal-gait-and-balance-decline-in-friedreich-s-ataxia-a-pilot-study
#7
Theresa A Zesiewicz, Jeannie B Stephenson, Seok Hun Kim, Kelly L Sullivan, Israt Jahan, Yangxin Huang, Jason L Salemi, Lynn Wecker, Jessica D Shaw, Clifton L Gooch
INTRODUCTION: Friedreich's Ataxia (FA) is a devastating, progressive, neurodegenerative disease. Objective measures that detect changes in neurological function in FA patients are needed to facilitate therapeutic clinical trials. The purpose of this pilot study was to analyze longitudinal changes in gait and balance in subjects with FA using the GAITRite Walkway System(®) and Biodex Balance System™, respectively, and to test the ability of these measures to detect change over time compared to the Friedreich's Ataxia Rating Scale (FARS)...
March 30, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28410857/measuring-participant-effort-in-a-depression-prevention-trial-who-engages-in-problem-solving-therapy
#8
Sarah T Stahl, Steven M Albert, Mary Amanda Dew, Stewart Anderson, Jordan F Karp, Ariel G Gildengers, Meryl A Butters, Charles F Reynolds
OBJECTIVE: To determine the acceptability of clinical interventions for depression prevention, identification of clinical characteristics associated with intervention engagement is needed. The purpose of this study is to describe levels and correlates of participant engagement in Problem Solving Therapy (PST) in adults 60 and older with subthreshold depression. METHODS: As part of a clinical trial to prevent depression among older adults with subthreshold depression, participants who were randomized to receive PST completed 6-8 sessions in which they learned skills to solve self-selected problems that were contributing to stress and reduced quality of life...
March 14, 2017: American Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28410250/effects-of-antigravity-treadmill-training-on-gait-balance-and-fall-risk-in-children-with-diplegic-cerebral-palsy
#9
Shamekh Mohamed El-Shamy
OBJECTIVE: The aim of this study was to investigate the effects of antigravity treadmill training on gait, balance, and fall risk in children with diplegic cerebral palsy. DESIGN: Thirty children with diplegic cerebral palsy were selected for this randomized controlled study. They were randomly assigned to (1) an experimental group that received antigravity treadmill training (20 mins/d, 3 d/wk) together with traditional physical therapy for 3 successive mos and (2) a control group that received only traditional physical therapy program for the same period...
April 13, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28409732/the-surgical-treatment-of-tumors-of-the-fourth-ventricle-a-single-institution-experience
#10
Sherise D Ferguson, Nicholas B Levine, Dima Suki, Andrew J Tsung, Fredrick F Lang, Raymond Sawaya, Jeffrey S Weinberg, Ian E McCutcheon
OBJECTIVE Fourth ventricle tumors are rare, and surgical series are typically small, comprising a single pathology, or focused exclusively on pediatric populations. This study investigated surgical outcome and complications following fourth ventricle tumor resection in a diverse patient population. This is the largest cohort of fourth ventricle tumors described in the literature to date. METHODS This is an 18-year (1993-2010) retrospective review of 55 cases involving patients undergoing surgery for tumors of the fourth ventricle...
April 14, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28403854/gait-characterization-in-golden-retriever-muscular-dystrophy-dogs-using-linear-discriminant-analysis
#11
Bodvaël Fraysse, Inès Barthélémy, El Mostafa Qannari, Karl Rouger, Chantal Thorin, Stéphane Blot, Caroline Le Guiner, Yan Chérel, Jean-Yves Hogrel
BACKGROUND: Accelerometric analysis of gait abnormalities in golden retriever muscular dystrophy (GRMD) dogs is of limited sensitivity, and produces highly complex data. The use of discriminant analysis may enable simpler and more sensitive evaluation of treatment benefits in this important preclinical model. METHODS: Accelerometry was performed twice monthly between the ages of 2 and 12 months on 8 healthy and 20 GRMD dogs. Seven accelerometric parameters were analysed using linear discriminant analysis (LDA)...
April 12, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28399873/influence-of-functional-task-oriented-mental-practice-on-the-gait-of-transtibial-amputees-a-randomized-clinical-trial
#12
Rodrigo Gontijo Cunha, Paulo José Guimarães Da-Silva, Clarissa Cardoso Dos Santos Couto Paz, Ana Carolina da Silva Ferreira, Carlos Julio Tierra-Criollo
BACKGROUND: Mental practice (MP) through motor imagery is a cognitive training strategy used to improve locomotor skills during rehabilitation programs. Recent works have used MP tasks to investigate the neurophysiology of human gait; however, its effect on functional performance has not been evaluated. In the present study, the influence of gait-oriented MP tasks on the rehabilitation process of gait in transtibial amputees was investigated by assessing the vertical (V), anterior-posterior (AP), and medio-lateral (ML) ground reaction forces (GRFs) and the time duration of the support phase of the prosthetic limb...
April 11, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28397001/gait-ataxia-in-humans-vestibular-and-cerebellar-control-of-dynamic-stability
#13
Roman Schniepp, Ken Möhwald, Max Wuehr
During human locomotion, vestibular feedback control is fundamental for maintaining dynamic stability and adapting the gait pattern to external circumstances. Within the supraspinal locomotor network, the cerebellum represents the key site for the integration of vestibular feedback information. The cerebellum is further important for the fine-tuning and coordination of limb movements during walking. The aim of this review article is to highlight the shared structural and functional sensorimotor principles in vestibular and cerebellar locomotion control...
April 10, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28395171/the-validity-of-the-gait-variability-index-for-individuals-with-mild-to-moderate-parkinson-s-disease
#14
Linda Rennie, Espen Dietrichs, Rolf Moe-Nilssen, Arve Opheim, Erika Franzén
Increased step-to-step variability is a feature of gait in individuals with Parkinson's disease (PD) and is associated with increased disease severity and reductions in balance and mobility. The Gait Variability Index (GVI) quantifies gait variability in spatiotemporal variables where a score ≥100 indicates a similar level of gait variability as the control group, and lower scores denote increased gait variability. The study aim was to explore mean GVI score and investigate construct validity of the index for individuals with mild to moderate PD...
March 31, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28393680/wheeled-assistive-device-for-load-carriage-the-effects-on-human-gait-and-biomechanics
#15
Itay Ketko, Meir Plotnik, Ran Yanovich, Amit Gefen, Yuval Heled
Soldiers are often required to carry loads which impose biomechanical strain on the human body. This can adversely affect physical performances. Recently, wheel-based devices (WBD) were designed to reduce the load on the soldier. In the present study, a prototype of this newly developed WBD was evaluated. Thirteen volunteers performed three exercise protocols on a treadmill as follows: (1) no load; (2) carrying 40% of their bodyweight with a backpack or; (3) with the WBD. Data acquisition included: gait parameters, vertical ground reaction forces (VGRF) and contact pressure acting on the shoulder...
April 10, 2017: Ergonomics
https://www.readbyqxmd.com/read/28392969/preliminary-experiments-with-a-unified-controller-for-a-powered-knee-ankle-prosthetic-leg-across-walking-speeds
#16
David Quintero, Dario J Villarreal, Robert D Gregg
This paper presents the experimental validation of a novel control strategy that unifies the entire gait cycle of a powered knee-ankle prosthetic leg without the need to switch between controllers for different periods of gait. Current control methods divide the gait cycle into several sequential periods each with independent controllers, resulting in many patient-specific control parameters and switching rules that must be tuned for a specific walking speed. The single controller presented is speed-invariant with a minimal number of control parameters to be tuned...
October 2016: Proceedings of the ... IEEE/RSJ International Conference on Intelligent Robots and Systems
https://www.readbyqxmd.com/read/28384609/dual-task-gait-differences-in-female-and-male-adolescents-following-sport-related-concussion
#17
David R Howell, Andrea Stracciolini, Ellen Geminiani, William P Meehan
Concussion may affect females and males differentially. Identification of gender-related differences after concussion, therefore, may help clinicians with individualized evaluations. We examined potential differences in dual-task gait between females and males after concussion. Thirty-five participants diagnosed with a concussion (49% female, mean age=15.0±2.1 years, 7.5±3.0 days post-injury) and 51 controls (51% female, mean age=14.4±2.1 years) completed a symptom inventory and single/dual-task gait assessment...
April 1, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28380319/the-coefficient-of-friction-in-parkinson-s-disease-gait
#18
Ana Kleiner, M Galli, M Franceschini, M F De Pandis, F Stocchi, G Albertini, Ricardo Machado Leite de Barros
This study aimed to characterize the coefficient of friction (COF) curves of patients with Parkinson's disease (PD) during barefoot gait and to evaluate the relationships between this variable and functional scales. Twenty-two subjects with PD (ON phase of levodopa) and 22 healthy subjects participated in this study. The participants walked barefoot along a pathway that went over two force plates embedded in the floor of the data collection room. The instantaneous COF was calculated as the ratio between the horizontal and vertical components of the ground reaction forces...
January 2017: Functional Neurology
https://www.readbyqxmd.com/read/28376829/preserved-gait-kinematics-during-controlled-body-unloading
#19
L Awai, M Franz, C S Easthope, H Vallery, A Curt, M Bolliger
BACKGROUND: Body weight supported locomotor training was shown to improve walking function in neurological patients and is often performed on a treadmill. However, walking on a treadmill does not mimic natural walking for several reasons: absent self-initiation, less active retraction of leg required and altered afferent input. The superiority of overground training has been suggested in humans and was shown in rats demonstrating greater plasticity especially in descending pathways compared to treadmill training...
April 4, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28374323/gait-balance-and-patient-reported-outcomes-during-taxane-based-chemotherapy-in-early-stage-breast-cancer-patients
#20
Scott M Monfort, Xueliang Pan, Robyn Patrick, Bhuvaneswari Ramaswamy, Robert Wesolowski, Michelle J Naughton, Charles L Loprinzi, Ajit M W Chaudhari, Maryam B Lustberg
BACKGROUND: Chemotherapy-induced peripheral neuropathy (CIPN) is a dose-limiting toxicity of several commonly used chemotherapy drugs including taxanes, vinca alkaloids, and platinum compounds. Development of CIPN is highly variable, both in self-reported symptoms and functional consequences, and can be severe enough to alter dose intensity. PURPOSE: To describe the natural histories of both patient-reported symptoms of CIPN and functional impairments in breast cancer patients undergoing taxane-based chemotherapy...
April 3, 2017: Breast Cancer Research and Treatment
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