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gait initiation

Agnes Sturma, Othmar Schuhfried, Timothy Hasenoehrl, Clemens Ambrozy, Stefan Salminger, Laura A Hruby, Johannes A Mayer, Kirsten Götz-Neumann, Richard Crevenna, Michaela M Pinter, Oskar C Aszmann
Drop foot is a frequent abnormality in gait after central nervous system lesions. Different treatment strategies are available to functionally restore dorsal extension during swing phase in gait. Orthoses as well as surface and implantable devices for electrical stimulation of the peroneal nerve may be used in patients who do not regain good dorsal extension. While several studies investigated the effects of implanted systems on walking speed and gait endurance, only a few studies have focussed on the system's impact on kinematics and long-term outcomes...
2019: PloS One
Shinichi Shirai, Ichiro Yabe, Ikuko Takahashi-Iwata, Masaaki Matsushima, Yoichi M Ito, Kaoru Takakusaki, Hidenao Sasaki
We reported previously that the average medial-lateral gait amplitude while walking on a straight path determined using triaxial accelerometers fixed on the middle of the upper back may be a quantitative and concise indicator for the severity of cerebellar ataxia. Considering that gait ataxia is a typical initial symptom in a variety of spinocerebellar degeneration (SCD), we aimed to develop quantitative biomarkers for cerebellar ataxia as metric variables. We used triaxial accelerometers to analyze gait parameters in 14 patients with SCD at 3 points over 3 years (at baseline, 1...
April 16, 2019: Cerebellum
Carolina Corsi, Veronica Cimolin, Paolo Capodaglio, Claudia Condoluci, Manuela Galli
BACKGROUND: Gait Initiation (GI) is a functional task that challenges the balance control requiring weight shift and a transition from standing to walking. Individuals with Down Syndrome (DS) walk with low velocity, prolonged stance and shorter steps beside an increased support base. However, no studies performed GI analysis on this population. The aim of this study is to quantitatively characterize the GI task in subjects with DS compared with a typically developed control group. METHODS: Seventeen individuals with DS (17 to 40 years) and 19 healthy subjects (17 to 40 years) were enrolled in the study...
April 15, 2019: BMC Neurology
Jacopo Pasquini, Roberto Ceravolo, David James Brooks, Ubaldo Bonuccelli, Nicola Pavese
BACKGROUND: Serotonergic raphe nuclei dysfunction has been documented in Parkinson's disease, both in pathological and neuroimaging studies, and has been associated with scores of tremor and non-motor symptoms. However, no in vivo longitudinal investigations have been conducted to assess the rate of decline of raphe serotonin transporter availability in the early stages of the disease. OBJECTIVE: To measure the rate of decline of raphe serotonin transporter availability over a two-year interval in patients with recently diagnosed disease and its association with non-motor symptoms over time...
April 5, 2019: Parkinsonism & related Disorders
Sean L Barton, Jonathan S Matthis, Brett R Fajen
When walking over stable, complex terrain, visual information about an upcoming foothold is primarily utilized during the preceding step to organize a nearly ballistic forward movement of the body. However, it is often necessary to respond to changes in the position of an intended foothold that occur around step initiation. Although humans are capable of rapidly adjusting foot trajectory mid-swing in response to a perturbation of target position, such movements may disrupt the efficiency and stability of the gait cycle...
April 12, 2019: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
Oliver Daniel Mowforth, Benjamin Marshall Davies, Mark Reinhard Kotter
Degenerative cervical myelopathy (DCM) is the most common cause of adult spinal cord dysfunction, most classically presenting with a broad-based gait and clumsy hands. Limb sensory loss and paraesthesia are considered common symptoms of DCM. However, we report an unusual case of a patient presenting with prominent and atypical sensory symptoms. The patient repeatedly presented to accident and emergency complaining of her body resembling a wet gel-like substance that she attributed to the use of olive oil moisturising cream...
April 11, 2019: BMJ Case Reports
Maxime Bretonnier, Pierre-Louis Hénaux, Thomas Gaberel, Vincent Roualdes, Gaelle Kerdiles, Pierre-Jean Le Reste, Xavier Morandi
OBJECTIVE: Spinal dural arteriovenous fistulas (SDAVFs) are rare vascular spinal malformations. According to the literature, surgery seems to result in better occlusion rates than endovascular treatment. However, the post-treatment evolution of neurological symptoms depending on the treatment remains unknown. The main objective of this study was to compare the clinical outcome for patients according to the method of treatment. METHODS: 63 patients with a SDAVFs from 4 academic neurosurgical departments were retrospectively included between 2000 and 2017...
April 8, 2019: World Neurosurgery
Efthymios Iliopoulos, Sujit Agarwal, Arshad Khaleel
PURPOSE: Tibia plateau fractures are severe knee injuries which have a great impact on the patients' lives, but in what extend is not clear yet in the literature. The purpose of this study was to investigate the short-term gait alternations after severe tibia plateau fractures treated with circular Ilizarov frame. MATERIALS & METHODS: Gait pattern evaluation was performed to patients who were treated with circular Ilizarov frame after severe tibia plateau fractures (Schatzker IV-VI), three to six months after the frame removal...
April 6, 2019: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
Sebastian Scheidt, Ulf Krister Hofmann, Falk Mittag
This protocol provides guidance on how to perform high resolution video rasterstereography and treadmill gait analysis on patients after lumbar fusion surgery to obtain results about altered variables of gait and posture. These observed changes can then be correlated with the patient-reported outcome measure of pain relief. The rasterstereographic device projects lines of parallel light onto the surface of the tested subject's back. The deformation of these lines is recognized by the device. From these data, a special software then generates a 3-D profile based on the principle of triangulation...
March 23, 2019: Journal of Visualized Experiments: JoVE
Nadeesha Kalyani Hewa Haputhanthirige, Karen Sullivan, Gene Moyle, Sandy Brauer, Erica Rose Jeffrey, Luisa Roeder, Sara Berndt, Graham Kerr
Dance-based interventions have been proposed for the management of Parkinson's disease (PD) symptoms. This review critically appraises and synthesises the research on the effects of dance interventions on gait, cognition and dual-tasking in PD, through a meta-analysis of peer-reviewed literature from seven databases. Eligible studies included people with PD, used a parallel-group or cohort design with a dance-based intervention, reported outcome measures of gait, cognition or dual-tasking, and were published in English up until September 2017...
April 3, 2019: Journal of Parkinson's Disease
Haewon Roh, Junwon Kim, Kyuha Chong, Won Ki Yoon, Taek-Hyun Kwon, Jong Hyun Kim
For most fractionated stereotactic radiosurgery treatment plans, daily imaging is not routinely performed, because there is little expectation that lesions will change significantly in the short term. However, here, we present the case of an abrupt increase and decrease in tumor volume during fractionated gamma knife radiosurgery (GKRS) for metastatic brain cancer. A 65-year-old man with a history of nephrectomy due to renal cell carcinoma was admitted to our hospital because of mild cognitive disorder and gait disturbance...
April 4, 2019: Stereotactic and Functional Neurosurgery
Sean W Gart, Thomas W Mitchel, Chen Li
Many snakes live in deserts, forests, and river valleys and traverse challenging 3-D terrain like rocks, felled trees, and rubble, with obstacles as large as themselves and variable surface properties. By contrast, apart from branch cantilevering, burrowing, swimming, and gliding, laboratory studies of snake locomotion focused on that on simple flat surfaces. Here, to begin to understand snake locomotion in complex 3-D terrain, we study how the variable kingsnake, a terrestrial generalist, traversed a large step of variable surface friction and step height (up to 30% snout-vent length)...
April 1, 2019: Journal of Experimental Biology
Lauren C Benson, Christian A Clermont, Ricky Watari, Tessa Exley, Reed Ferber
The identification of the initial contact (IC) and toe off (TO) events are crucial components of running gait analyses. To evaluate running gait in real-world settings, robust gait event detection algorithms that are based on signals from wearable sensors are needed. In this study, algorithms for identifying gait events were developed for accelerometers that were placed on the foot and low back and validated against a gold standard force plate gait event detection method. These algorithms were automated to enable the processing of large quantities of data by accommodating variability in running patterns...
March 27, 2019: Sensors
Lucy Parrington, Peter C Fino, Clayton W Swanson, Charles F Murchison, James Chesnutt, Laurie A King
CONTEXT: In longitudinal studies tracking recovery after concussion, researchers often have not considered the timing of return to play (RTP) as a factor in their designs, which can limit the understanding of how RTP may affect the analysis and resulting conclusions. OBJECTIVE: To evaluate the recovery of balance and gait in concussed athletes using a novel linear mixed-model design that allows an inflection point to account for changes in trend that may occur after RTP...
April 1, 2019: Journal of Athletic Training
Ming Hao, Ken Chen, Chenglong Fu
OBJECTIVE: Measuring 3D foot trajectories with foot- worn IMUs (inertial measurement units) is essential for a variety of applications, such as gait analysis and fall risk assessment. IMU-based foot trajectory is reconstructed usually by double integrating the global coordinate acceleration, in which drifts of signals are accumulated and lead to unbounded error increase. To reduce drift errors, a smoother-based method is proposed in this paper. METHODS: The smoother-based method not only corrects initial values of integrations, but also smooths integrating processes through a backward update...
March 26, 2019: IEEE Transactions on Bio-medical Engineering
Małgorzata Domagalska-Szopa, Andrzej Szopa
Background: The positive findings from our previous studies, which revealed the link between postural and gait patterns in children with unilateral cerebral palsy (CP) were very encouraging for recognition this relationship in children with bilateral cerebral palsy (CP). Therefore, the objective of this study was to evaluate whether different gait patterns corresponding to postural patterns in children with bilateral CP could be statistically significant according to a cluster analysis. Methods: Fifty-eight participants with bilateral CP and 45 matched children with typical growth and development...
2019: Frontiers in Neurology
Francesca Felicia Operto, Roberta Mazza, Grazia Maria Giovanna Pastorino, Alberto Verrotti, Giangennaro Coppola
INTRODUCTION: Rett syndrome (RTT) is a severe X-linked neurodevelopmental disorder that primarily affects girls, with an incidence of 1:10,000-20,000. The diagnosis is based on clinical features: an initial period of apparently normal development (ages 6-12 months) followed by a rapid decline with regression of acquired motor skills, loss of spoken language and purposeful hand use, onset of hand stereotypes, abnormal gait, and growth failure. The course of the disease, in its classical form, is characterized by four stages...
March 30, 2019: Brain and Behavior
Frederik Petri Svenningsen, Mark de Zee, Anderson Souza Oliveira
It is common sense that walking on sand poses challenges to postural control. However, there are no studies quantifying the kinematics of sand walking compared to other types of postural perturbations such as unstable shoes. The aim of the study was to investigate differences in walking kinematics during walking on solid ground, in unstable shoes and on unstable surfaces. Nineteen healthy young adults (23.5 ± 1.5 years) performed three different walking tasks: 1) walking at preferred speed while wearing regular shoes; 2) Walking at preferred speed wearing Masai Barefoot Technology shoes and 3) barefoot walking at preferred speed on a large sand grave...
March 25, 2019: Human Movement Science
Pei-Ya Chen, Yu-Hsiu Juan, Shinn-Kuang Lin
Intracranial dural arteriovenous fistula (DAVF) with perimedullary venous drainage may cause brainstem swelling and represent a diagnostic challenge. A 66-year-old man presented to the emergency room with recurrent vertigo, minimal truncal ataxia with a wide-based gait, and a slightly impaired tandem gait. Brain magnetic resonance imaging (MRI) revealed a hyperintense lesion in the left pontomedullary area on T2-weighted images (T2WIs) with partial gadolinium enhancement, but without increased signals on diffusion-weighted images...
2019: Journal of Nippon Medical School
Christian Meyer, Tim Killeen, Christopher S Easthope, Armin Curt, Marc Bolliger, Michael Linnebank, Björn Zörner, Linard Filli
Treadmill-based gait analysis is widely used to investigate walking pathologies and quantify treatment effects on locomotion. Differential sensorimotor conditions during overground vs. treadmill walking necessitate initial familiarization to treadmill walking. Currently, there is no standardized treadmill acclimatization protocol and insufficient familiarization potentially confounds analyses. We monitored initial adaptations to treadmill walking in 40 healthy adults. Twenty-six walking parameters were assessed over 10 minutes with marker-based kinematic analysis and acclimatization profiles were generated...
March 26, 2019: Scientific Reports
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