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gait stability

Alexandra DeJong, L Colby Mangum, Jacob Resch, Susan A Saliba
CONTEXT: Medial knee displacement (MKD) is a common risk factor for lower extremity injury and is related to altered gluteal muscle activity. Ultrasound imaging (USI) is a reliable means to explore mechanical muscle activity, however no information exists regarding USI of the gluteals during gait in a MKD population. OBJECTIVE: To determine differences in USI gluteal muscle activity during gait in individuals with and without MKD. DESIGN: Descriptive laboratory study...
March 15, 2018: Journal of Sport Rehabilitation
Gaspar Epro, Andreas Mierau, Christopher McCrum, Michael Leyendecker, Gert-Peter Bruggemann, Kiros Karamanidis
The plantar flexors play a crucial role in recovery from sudden disturbances to gait. The objective of this study was to investigate whether medium (months) or long-term (years) exercise-induced enhancement of triceps surae (TS) neuromuscular capacities affects older adults' ability to retain improvements in reactive gait stability during perturbed walking acquired from perturbation training sessions. Thirty-four female adults (65{plus minus}7y) were recruited to a perturbation training group (n=13) or a group which additionally completed 14 weeks of TS neuromuscular exercise (n=21), 12 of whom continued with the exercise for 1...
March 14, 2018: Journal of Neurophysiology
Selena Tinga, Stanley E Kim, Scott A Banks, Stephen C Jones, Brian H Park, Antonio Pozzi, Daniel D Lewis
BACKGROUND: Cranial cruciate ligament (CrCL) insufficiency is a degenerative condition that is a common cause of pelvic limb lameness and osteoarthritis in dogs. Surgical therapies developed to treat dogs with naturally occurring CrCL insufficiency aim to address the resultant instability, but the in-vivo alterations in stifle kinematics associated with CrCL insufficiency have not been accurately defined. The objective of this study was to quantify the 3-dimensional femorotibial joint kinematics of dogs with naturally occurring cranial cruciate ligament (CrCL) insufficiency during ambulation...
March 12, 2018: BMC Veterinary Research
Lars Bischoff, Christian Babisch, Jürgen Babisch, Frank Layher, Klaus Sander, Georg Matziolis, Stefan Pietsch, Eric Röhner
INTRODUCTION: The use of Kinesio tape (KT) to improve proprioception is a matter of considerable debate. In comparison, the rupture of the anterior cruciate ligament is a sufficiently well-investigated injury with a proven compromise of proprioception. The objective of the present study was to assess a supportive effect on proprioception after KT application, taking the anterior cruciate ligament (ACL) rupture as an example. MATERIALS AND METHODS: Forty-eight patients who had suffered an ACL rupture, confirmed clinically and by magnetic resonance imaging, and who were treated conservatively or were awaiting surgery were included in this study...
March 10, 2018: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
Gina E Bertocci, Nathan P Brown, Patrice M Mich
The objective of this study was to describe the patient population of dogs with cranial cruciate ligament (CrCL) deficiency that were prescribed a stifle orthosis. A total of 215 client-owned dogs with previously diagnosed CrCL deficiency were prescribed a stifle orthosis at a veterinary pain management and mobility clinic. Patient intake data collected included dog signalment, chief medical complaint, home environment and activity description, medical and surgical history, and diagnosing veterinarian. An orthopedic examination was conducted to assess pelvic limb function and determine pelvic limb morphologic measures...
December 2017: Topics in Companion Animal Medicine
Mohsen Abedi, Majid M Moghaddam, Davoud Fallah
Since the past decade, rehabilitation robots have become common technologies for recovering gait ability after a stroke. Nevertheless, it is believed that these robots can be further enhanced. Hence, several researches are making progress in optimizing gait rehabilitation robots. However, most of these researches have only assessed the robots and their controllers in improving spatiotemporal and kinetic features of walking. There are not many researchers have focused on the robots' controllers' effects on the central nervous or neuromuscular systems...
March 5, 2018: Mathematical Biosciences
Seung-Hyun Hyun, Che-Cheong Ryew
The study aim to analyze the influence on dynamic stability relative to positions carrying with weight during gait, for which experiment participated with healthful adult males (n=9), were performed under three-dimensional (3D) conditions of no load (NL), right of trunk (RT), and front of trunk (FT). The kinematic and kinetic conclusions obtained from 3D cinematography and ground reaction force system were as follows; 1-step time elapsed showed longest in NL of all, and maximum velocity of RT showed slower than NL and FT, which resulted in significant level at ( P <0...
February 2018: Journal of Exercise Rehabilitation
Nicholas A Beckmann, Rudi G Bitsch, Maciej B Janoszka, Matthias C Klotz, Thomas Bruckner, Sebastian Jaeger
BACKGROUND: Revision total hip arthroplasty frequently faces challenges associated with deficient bone stock. Porous metal implants were developed to meet the challenge, but require rapid osseointegration for ultimate success. This study aims to assess relative motion as an indicator for primary stability and osseointegration of two different titanium cups each combined with a titanium augment. METHODS: In 14 cadaver hemipelvises, 2 types of titanium acetabular cups, a traditional sintered-bead cup (POROCOAT Acetabular Cup [PAC]) and a newer porous-coated cup (GRIPTION Acetabular Cup [GAC]) each associated with a porous augment, were subjected to 3-dimensional varying loads, replicating 30% of loads experienced during normal gait...
February 5, 2018: Journal of Arthroplasty
R Schniepp, J C Boerner, J Decker, K Jahn, T Brandt, Max Wuehr
OBJECTIVES: To examine the mechanism underlying previously reported ameliorating effects of noisy galvanic vestibular stimulation (GVS) on balance performance in patients with bilateral vestibulopathy (BVP) and determine those patients (incomplete versus complete vestibular loss) that might benefit from this intervention. METHODS: Vestibulospinal reflex thresholds were determined in 12 patients with BVP [2 with complete loss (cBVP) and 10 with residual function (rBVP)]...
March 5, 2018: Journal of Neurology
Kristen Tisher, Kimberly Mann, Sarah VanDyke, Charity Johansson, Srikant Vallabhajosula
Supervised balance training shows immediate benefit for older adults at fall risk. The long-term effectiveness of such training can be enhanced by implementing a safe and simple home exercise program (HEP). We investigated the effects of a12-week unsupervised HEP following supervised clinic-based balance training on functional mobility, balance, fall risk, and gait. Six older adults with an elevated fall risk obtained an HEP and comprised the HEP group (HEPG) and five older adults who were not given an HEP comprised the no HEP group (NoHEPG)...
March 5, 2018: Physiotherapy Theory and Practice
Wanda Forczek, Yury P Ivanenko, Joanna Bielatowicz, Karolina Wacławik
INTRODUCTION: Since pregnant women may have potentially greater difficulty maintaining balance, their stability has been investigated by some researchers. However, there is no consensus considering the results. The purpose of our investigation was to compare all the experimental studies focusing on the analysis of gait that have been conducted over the last years to assess their methodological issues and changes induced by pregnancy. METHODS: The PRISMA Guidelines incorporating a risk of bias and strength of recommendations were used as a methodological template for this review...
February 23, 2018: Gait & Posture
Jennifer Anderson, Stephanie King, Andrzej Przybyla, Lakshminarayan Ranganath, Gabor Barton
The internal knee abduction moment (KAM) in osteoarthritis is reduced by increased lateral trunk lean (TL). Mechanistically, this occurs as the Centre of Mass (COM) moves further over the stance leg. Since the size of the base of support constrains the COM, an associated increase in step width (SW) would be expected to maintain stability. This study tested the effects of TL on SW and KAM in healthy participants (n = 21) who performed normal and 6° TL walks. The latter was controlled via audio-visual biofeedback...
February 21, 2018: Gait & Posture
Gaspar Epro, Christopher McCrum, Andreas Mierau, Michael Leyendecker, Gert-Peter Bruggemann, Kiros Karamanidis
This study aimed to examine whether the triceps surae (TS) muscle-tendon unit (MTU) mechanical properties affects gait stability and its reactive adaptation potential to repeated perturbation exposure in older adults. Thirty-four older adults each experienced eight separate unexpected perturbations during treadmill walking, while a motion capture system was used to determine the margin of stability (MoS) and base of support (BoS). Ankle plantarflexor muscle strength and Achilles tendon (AT) stiffness were analysed using ultrasonography and dynamometry...
March 1, 2018: Journal of Applied Physiology
H M Austin, N Balendra, J E Langenderfer, K I Ustinova
OBJECTIVE: Walking requires precise coordination of bilateral lower extremity motions at all joints. This ability can be affected by traumatic brain injury (TBI). The study investigated inter-joint coordination of lower extremities during overground walking after TBI. METHODS: Ten individuals with post-injury ataxia, postural stability and gait abnormalities, as well as 10 sex- and age-matched control subjects were involved in the study. Participants walked at self-selected speed in three experimental conditions: normal walking without any additional task; walking with a narrow base of support, and walking while holding a cup full of water...
March 1, 2018: Brain Injury: [BI]
Feng Yang, Fabricio Saucedo, Mu Qiao
The purpose of this pilot study was to establish the efficacy and feasibility of a single-session treadmill-based stance-slip perturbation program on preventing slip-related falls while walking over the ground among young adults. Two groups (training vs. control) of healthy young participants were respectively exposed to a treadmill-based stance-slip perturbation training protocol and a placebo training protocol. Post training, both groups experienced an unexpected overground gait-slip. Our results indicated that 28...
February 21, 2018: Journal of Biomechanics
Sara Pizzamiglio, Hassan Abdalla, Usman Naeem, Duncan L Turner
BACKGROUND: Gait impairments during real-world locomotion are common in neurological diseases. However, very little is currently known about the neural correlates of walking in the real world and on which regions of the brain are involved in regulating gait stability and performance. As a first step to understanding how neural control of gait may be impaired in neurological conditions such as Parkinson's disease, we investigated how regional brain activation might predict walking performance in the urban environment and whilst engaging with secondary tasks in healthy subjects...
February 27, 2018: Journal of Neuroengineering and Rehabilitation
Daniel Hamacher, Franziska Schley, Karsten Hollander, Astrid Zech
Auditory information affects sensorimotor control of gait. Noise or active noise cancelling alters the perception of movement related sounds and, probably, gait stability. The aim of the current study was to evaluate the effects of noise cancelling on gait stability. Twenty-five healthy older subjects (70 ± 6 years) were included into a randomized cross-over study. Gait stability (largest Lyapunov exponent) in normal overground walking was determined for the following hearing conditions: no manipulation and active noise cancelling...
February 24, 2018: Human Movement Science
Laura Comber, Jacob J Sosnoff, Rose Galvin, Susan Coote
BACKGROUND: Multiple sclerosis (MS) is a neurological condition that can affect the postural stability of the individual and predispose falls in this population. METHODS: A systematic literature search identified case-control studies investigating differences in postural control across a diversity of task conditions, with the exception of gait, between people with MS and healthy controls. Meta-analysis was conducted where a variable was presented by four or more studies...
February 19, 2018: Gait & Posture
Chris Allen, Riley Sheehan, Gail Deyle, Jason Wilken, Norman Gill
BACKGROUND AND PURPOSE: Patients with knee osteoarthritis (OA) are at an increased risk of falling. Further, the symptoms associated with knee OA are correlated with fall risk. A manual physical therapy (MPT) approach consisting of mobilizing techniques and reinforcing exercise improves the symptoms and functional limitations associated with knee OA. The purpose of this case series is to evaluate an MPT intervention of mobilization techniques and exercise for knee OA on improving symptoms and quantify the secondary benefit of improving stumble recovery...
February 26, 2018: Physiotherapy Theory and Practice
Cornelia Laule, Irene M Vavasour, Elham Shahinfard, Burkhard Mädler, Jing Zhang, David K B Li, Alex L MacKay, Sandra M Sirrs
BACKGROUND AND PURPOSE: Late-onset adult Krabbe disease is a very rare demyelinating leukodystrophy, affecting less than 1 in a million people. Hematopoietic stem cell transplantation (HSCT) strategies can stop the accumulation of toxic metabolites that damage myelin-producing cells. We used quantitative advanced imaging metrics to longitudinally assess the impact of HSCT on brain abnormalities in adult-onset Krabbe disease. METHODS: A 42-year-old female with late-onset Krabbe disease and an age/sex-matched healthy control underwent annual 3T MRI (baseline was immediately prior to HSCT for the Krabbe subject)...
February 26, 2018: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
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