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Gait Components

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https://www.readbyqxmd.com/read/30326416/acute-effect-of-foot-orthoses-on-frequency-domain-of-ground-reaction-forces-in-male-children-with-flexible-flatfeet-during-walking
#1
Seyed Majid Alavi-Mehr, AmirAli Jafarnezhadgero, Fatemeh Salari-Esker, Matteo Zago
BACKGROUND: Flatfoot is a structural and functional abnormality of the foot that may cause lower limb mechanical damage during walking. The aim of this study was to investigate the acute effect of foot orthoses on the frequency domain of ground reaction forces in children with flatfeet during the stance phase of walking. METHODS: Bilateral gait data were collected from fifteen male children suffering from flatfeet syndrome. Two Kistler force platforms were used to record the ground reaction forces of each limb during level walking...
May 29, 2018: Foot
https://www.readbyqxmd.com/read/30321884/contiguous-metastasis-of-pulmonary-adenocarcinoma-to-meningioma
#2
Masato Nakaya, Shinya Ichimura, Yutaka Kurebayashi, Youichi Mochizuki, Raita Fukaya, Masahito Fukuchi, Koji Fujii
BACKGROUND:  Metastasis from one tumor into another is known as tumor-to-tumor metastasis. We report a case of a contiguous occurrence of meningioma and brain cancer metastasis. PATIENT:  A 91-year-old woman presented with a sudden onset of weakness in her right limbs and gait disturbance. Fourteen years previously, she had a tumor that was suspected to be a meningioma in the left frontal convexity with no change for several years. One year earlier to presentation she was diagnosed with lung carcinoma in the left lower lobe...
October 15, 2018: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/30315672/obinutuzumab-a-new-anti-cd20-antibody-and-chlorambucil-are-active-and-effective-in-anti-mag-antibody-polyneuropathy
#3
C Briani, A Visentin, A Salvalaggio, M Cacciavillani, L Trentin
BACKGROUND: Rituximab, a chimeric anti-CD20 monoclonal antibody (mAb), has been used in polyneuropathy associated with anti-MAG antibody polyneuropathy with controversial results. Herein, we report on two patients with anti-MAG antibody neuropathy and concurrent chronic lymphocytic leukemia (CLL), who dramatically responded to obinutuzumab, a novel glycoengineered humanized anti-CD20 mAb. METHODS: Patient 1 was a 82-year-old man with severe demyelinating sensory-motor neuropathy...
October 13, 2018: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/30312848/bayesian-classification-of-falls-risk
#4
Matthew Martinez, Phillip L De Leon, David Keeley
BACKGROUND: Prior research in falls risk prediction often relies on qualitative and/or clinical methods. There are two challenges with these methods. First, qualitative methods typically use falls history to determine falls risk. Second, clinical methods do not quantify the uncertainty in the classification decision. In this paper, we propose using Bayesian classification to predict falls risk using vectors of gait variables shown to contribute to falls risk. RESEARCH QUESTIONS: (1) Using a vector of risk ratios for specific gait variables shown to contribute to falls risk, how can older adults be classified as low or high falls risk? and (2) how can the uncertainty in the classifier decision be quantified when using a vector of gait variables? METHODS: Using a pressure sensitive walkway, biomechanical measurements of gait were collected from 854 adults over the age of 65...
October 1, 2018: Gait & Posture
https://www.readbyqxmd.com/read/30307872/a-neuromechanical-model-of-reduced-dorsiflexor-torque-during-the-anticipatory-postural-adjustments-of-gait-initiation
#5
Matthew N Petrucci, Louis A Di Berardino, Colum D MacKinnon, Elizabeth T Hsiao-Wecksler
Anticipatory postural adjustments (APAs) precede gait initiation and function to accelerate the center of mass forward to toward the initial stance leg. Impairment in APA generation, such as those seen in people with Parkinson's disease (PD), can impact the quality of the first step. An initial burst of activity in the dorsiflexor muscle (tibialis anterior) of the stepping leg is an important contributor to the posterior excursion of the center of pressure excursion that accelerates the center of mass forward during an APA...
October 9, 2018: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/30306242/asymmetric-polyethylene-inserts-promote-favorable-kinematics-and-better-clinical-outcome-compared-to-symmetric-inserts-in-a-mobile-bearing-total-knee-arthroplasty
#6
Gianluca Castellarin, Silvia Pianigiani, Bernardo Innocenti
PURPOSE: This study aims at comparing the effects of symmetric and asymmetric designs for the polyethylene insert currently available and also for mobile bearing total knee arthroplasty (TKA). The investigation was performed both clinically and biomechanically through finite element analysis. METHODS: 303 patients, with a mobile bearing TKA, were analyzed retrospectively. All patients received the same femoral and tibial components; for the insert, 151 patients received a symmetric design (SD) and 152 an asymmetric design (AD)...
October 10, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/30298174/association-between-high-levels-of-parathyroid-hormone-and-frailty-the-nepean-osteoporosis-and-frailty-nof-study
#7
L Murthy, P Dreyer, P Suriyaarachchi, F Gomez, C L Curcio, D Boersma, G Duque
BACKGROUND: Frailty is associated with poor outcomes hence identification of risks factors is pivotal. Since the independent role of parathyroid hormone (PTH) in frailty remains unexplored, we aimed to determine this in a population of older individuals with a history of falling. DESIGN: Cross-sectional study. SETTING: Falls and Fracture Clinic, Nepean Hospital (Penrith, Australia). PARTICIPANTS: 692 subjects (mean age=79, 65% women) assessed between 2009-2015...
2018: Journal of Frailty & Aging
https://www.readbyqxmd.com/read/30290756/prevalence-of-sarcopenia-and-its-components-in-community-dwelling-outpatient-older-adults-and-their-relation-with-functionality
#8
Gulistan Bahat, Asli Tufan, Cihan Kilic, Mehmet Akif Karan, Alfonso J Cruz-Jentoft
AIM: Sarcopenia is recognized with its adverse functional outcomes. We aimed to report the prevalence of European Working Group on Sarcopenia in Older People (EWGSOP) defined sarcopenia and its individual components in community dwelling outpatient older adults and study the correlations of EWGSOP defined sarcopenia, muscle mass, muscle strength, and physical performance with functional status. MATERIAL AND METHODS: The subjects were prospectively recruited from the geriatrics outpatient clinics of our university hospital...
October 5, 2018: Aging Male: the Official Journal of the International Society for the Study of the Aging Male
https://www.readbyqxmd.com/read/30285233/neuromuscular-attributes-associated-with-lower-extremity-mobility-among-community-dwelling-older-adults
#9
Mini E Jacob, Thomas G Travison, Rachel E Ward, Nancy K Latham, Suzanne G Leveille, Alan M Jette, Jonathan F Bean
Background: The Short Physical Performance Battery (SPPB) is advocated as a screening tool in geriatric care for predicting future disability. We aimed to identify the leg neuromuscular attributes to be targeted in rehabilitative care among older adults with poor SPPB scores. Methods: Boston Rehabilitative Impairment Study of the Elderly (Boston RISE) participants (n = 430) underwent assessment of neuromuscular attributes (leg strength, leg velocity, trunk extensor endurance, knee flexion range of motion [ROM], ankle ROM, and foot sensation)...
October 4, 2018: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/30268996/walking-and-balance-in-children-and-adolescents-with-lower-limb-amputation-a-review-of-literature
#10
REVIEW
Arezoo Eshraghi, Zahra Safaeepour, Mark Daniel Geil, Jan Andrysek
BACKGROUND: Children with lower limb loss face gait and balance limitations. Prosthetic rehabilitation is thus aimed at improving functional capacity and mobility throughout the developmental phases of the child amputee. This review of literature was conducted to determine the characteristics of prosthetic gait and balance among children and adolescents with lower-limb amputation or other limb loss. METHODS: Both qualitative and quantitative studies were included in this review and data were organized by amputation etiology, age range and level of amputation...
September 13, 2018: Clinical Biomechanics
https://www.readbyqxmd.com/read/30257780/-effect-of-unloading-knee-brace-on-dynamic-parameters-of-the-stance-phase-of-gait-in-patients-with-knee-osteoarthritis
#11
M Lehnertová, L Siudová, M Janura, Z Svoboda, J Gallo, P Kamínek
PURPOSE OF THE STUDY Knee joint is the most common place where osteoarthritis may occur. A specific therapy is indicated to patients depending on the degree of disability and other signs. The available methods and their clinical value are regularly assessed in systematic reviews and meta-analysis of clinical studies. The evidence of working mechanism of the specific therapeutic intervention is another important part of evaluating its therapy effect. One of the possibilities of knee osteoarthritis conservative treatment is a functional prophylactic knee brace...
2018: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/30255808/reference-values-for-gait-temporal-and-loading-symmetry-of-lower-limb-amputees-can-help-in-refocusing-rehabilitation-targets
#12
Andrea Giovanni Cutti, Gennaro Verni, Gian Luca Migliore, Amedeo Amoresano, Michele Raggi
BACKGROUND: The literature suggests that optimal levels of gait symmetry might exist for lower-limb amputees. Not only these optimal values are unknown, but we also don't know typical symmetry ratios or which measures of symmetry are essential. Focusing on the symmetries of stance, step, first peak and impulse of the ground reaction force, the aim of this work was to answer to three methodological and three clinical questions. The methodological questions wanted to establish a minimum set of symmetry indexes to study and if there are limitations in their calculations...
September 5, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/30248484/healthy-aging-does-not-impair-lower-extremity-motor-flexibility-while-walking-across-an-uneven-surface
#13
Nils Eckardt, Noah J Rosenblatt
It is crucial to understand age-related degenerative processes that affect dynamic postural control and ultimately increase the risk of falling for older adults. Mediolateral stability during gait, which requires active control of foot placement, may be particularly diminished with age. Using the uncontrolled manifold-analysis (UCM), we aimed to quantify the effect of age and uneven surfaces on the ability to rely on motor equivalent control to stabilize the mediolateral trajectory of the swing limb during gait...
September 21, 2018: Human Movement Science
https://www.readbyqxmd.com/read/30239477/gait-analysis-after-intertrochanteric-hip-fracture-does-shortening-result-in-gait-impairment
#14
Elizabeth B Gausden, Danielle Sin, Ashley E Levack, Lauren E Wessel, Gele Moloney, Joseph M Lane, Dean G Lorich
OBJECTIVE: To determine the association between fracture collapse with altered gait after intertrochanteric (IT) fracture using the trochanteric fixation nail (TFN) and helical blade. DESIGN: Prospective cohort study. SETTING: Academic Level I trauma center. PATIENTS: Seventy-two patients with IT hip fractures (OTA/AO 31) treated between 2012 and 2016. The average age was 79.7 years (range, 51-94 years); there were 59 women and 13 men...
November 2018: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/30235246/a-qualitative-exploration-of-post-acute-stroke-participants-experiences-of-a-multimodal-intervention-incorporating-horseback-riding
#15
Petra Pohl, Gunnel Carlsson, Lina Bunketorp Käll, Michael Nilsson, Christian Blomstrand
BACKGROUND: Multimodal rehabilitation interventions delivered in late phase of stroke recovery involve physical (motor and sensory), social, and cognitively challenging activities. Horseback riding can be incorporated within such interventions, leading to meaningful long-term improvements when applied to individuals with moderate levels of disability. There is a lack of research illuminating stroke survivors' experiences and perceptions of horseback riding in the context of multimodal interventions...
2018: PloS One
https://www.readbyqxmd.com/read/30214050/altering-compliance-of-a-load-carriage-device-in-the-medial-lateral-direction-reduces-peak-forces-while-walking
#16
Jean-Paul Martin, Qingguo Li
Altering mechanical compliance in load carriage structures has shown to reduce metabolic cost and accelerative forces of carrying weight. Currently, modifications to load carriage structures have been primarily targeted at vertical motion of the carried mass. No study to date has investigated altering load carriage compliance in the medial-lateral direction. We developed a backpack specifically for allowing a carried mass to oscillate in the horizontal direction, giving us the unique opportunity to understand the effects of lateral mass motion on human gait...
September 13, 2018: Scientific Reports
https://www.readbyqxmd.com/read/30209583/variety-of-preoperative-mri-changes-in-spinal-cord-ependymoma-of-who-grade-ii-a-case-series
#17
Kazuyoshi Kobayashi, Kei Ando, Fumihiko Kato, Koji Sato, Mitsuhiro Kamiya, Mikito Tsushima, Masaaki Machino, Kyotaro Ota, Masayoshi Morozumi, Satoshi Tanaka, Shunsuke Kanbara, Sadayuki Ito, Naoki Ishiguro, Shiro Imagama
PURPOSE: To report a case series of surgically proven spinal ependymomas of WHO grade II in which there were changes in the preoperative MRI characteristics over time. METHODS: A total of 71 patients with spinal cord ependymoma of WHO grade II underwent surgery. There were ten cases in which surgery was performed at an average of 2.2 years after the tumor was found. Cystic components, syringomyelia, hemorrhage "cap sign," Gd enhancement pattern, characteristic changes in MRI, MIB-1 index, and neurological assessment during the preoperative period were examined...
September 12, 2018: European Spine Journal
https://www.readbyqxmd.com/read/30192916/frailty-among-patients-receiving-hemodialysis-evolution-of-components-and-associations-with-mortality
#18
Kirsten L Johansen, Cynthia Delgado, George A Kaysen, Glenn M Chertow, Janet Chiang, Lorien S Dalrymple, Mark R Segal, Barbara A Grimes
Background: Understanding how components of frailty change over time and how they can be modeled as time-dependent predictors of mortality could lead to better risk prediction in the dialysis population. Methods: We measured frailty at baseline, 12, and 24 months among 727 patients receiving hemodialysis in Northern California and Atlanta. We examined the likelihood of meeting frailty components (weight loss, exhaustion, low physical activity, weak grip strength, and slow gait speed) as a function of time in logistic regression analysis and association of frailty components with mortality in time-updated multivariable Cox models...
September 5, 2018: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/30189434/the-influence-of-implant-position-on-final-clinical-outcome-and-gait-analysis-after-total-knee-arthroplasty
#19
Jarosław Jabłoński, Marcin Sibiński, Michał Polguj, Jacek Kowalczewski, Dariusz Marczak, Łukasz Faflik, Dorota Jabłońska
The aim of the study was to evaluate the impact of implant component alignment on objective and subjective outcomes after total knee arthroplasty (TKA). The rotation of the femoral component and its influence on the final results were also examined. After exclusion, the study examined 102 patients (mean age, 66.28 years; range, 51-79 years) who had undergone unilateral TKA. All of the operative procedures were performed by one surgeon with one type of implant. One year after the operation, improvements in Knee Society's Knee Scoring System, functional score, Western Ontario and McMaster Universities Osteoarthritis Index, and Visual Analog Scale were observed; however, none showed a significant correlation with any of the parameters analyzed by X-ray or computed tomography (CT) (α, β, γ, δ angles and posterior condylar angle [PCA])...
September 6, 2018: Journal of Knee Surgery
https://www.readbyqxmd.com/read/30183648/modeling-of-noisy-acceleration-signals-from-quasi-periodic-movements-for-drift-free-position-estimation
#20
Miroslav Zivanovic, Nora Millor, Marisol Gomez
OBJECTIVE: We present a novel approach to drift-free position estimation from noisy acceleration signals which often arise from quasi-periodic small-amplitude body movements. In contrast to the existing methods, this data-driven strategy is designed to properly describe time-variant harmonic structures in single-channel acceleration signals for low signal-to-noise ratios. METHODS: It comprises three processing steps: (1) short-time modeling of acceleration dynamics (instantaneous harmonic amplitudes and phases) in the analysis frame, (2) analytical integration which yields short-time position, and (3) overlap-add recombination for full length position synthesis...
September 3, 2018: IEEE Journal of Biomedical and Health Informatics
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