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Gait analysis

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https://www.readbyqxmd.com/read/29149666/relationship-between-radiographic-patella-alta-pathology-and-walking-dysfunction-in-children-with-bilateral-spastic-cerebral-palsy
#1
Matthias Hösl, Harald Böhm, Michaela Seltmann, Chakravarthy Ugandhar Dussa, Leonhard Döderlein
BACKGROUND: Patella-alta is very common in patients with Cerebral Palsy (CP). While several diagnostic x-ray indices have been developed for patella-alta in general, the specific relationship with walking dysfunction in CP is only partly understood. METHODS: 33 participants with bilateral spastic CP between 4 and 20 years (GMFCS I-II without previous surgery) that underwent 3D gait analysis as well as a radiographic exam within 0.8 (SD 1.2) months were retrospectively included...
November 10, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29149623/the-effect-of-surgical-approach-on-gait-mechanics-after-total-hip-arthroplasty
#2
Joseph Zeni, Kathleen Madara, Hunter Witmer, Riley Gerhardt, James Rubano
BACKGROUND: Few studies have compared the biomechanical outcomes of different surgical approaches for hip arthroplasty. The purpose of this study was to compare hip, pelvic, and trunk kinematics and kinetics between individuals who underwent a posterior or anterolateral approach. METHODS: Forty-five individuals between 40 and 80 years old underwent motion analysis during overground gait prior to hip arthroplasty and 3 months after surgery. Walking speed, hip flexion angle, hip extension angle, adduction angle and moment, trunk angle, trunk lean, and pelvis drop were compared between approaches...
November 10, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/29148155/identifying-biomechanical-gait-parameters-in-adolescent-boys-with-haemophilia-using-principal-component-analysis
#3
L B Suckling, D Stephensen, M C Cramp, R Mahaffey, W I Drechsler
INTRODUCTION: Improvements in the medical management for those with haemophilia have resulted in improved clinical outcomes. However, current treatment regimens do not alleviate all joint haemarthroses with the potential for long-term joint deterioration remaining. The evaluation of functional activities such as gait, using standardized tools to monitor children with haemophilia is emerging. AIM: This study explored differences in sagittal plane biomechanics of walking in adolescent boys aged 11-18 years with haemophilia and an age-matched group of typically developing boys...
November 17, 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/29148138/artificial-walking-technologies-to-improve-gait-in-cerebral-palsy-multichannel-neuromuscular-stimulation
#4
Jessica Rose, Katelyn Cahill-Rowley, Erin E Butler
Cerebral palsy (CP) is the most common childhood motor disability and often results in debilitating walking abnormalities, such as flexed-knee and stiff-knee gait. Current medical and surgical treatments are only partially effective in improving gait abnormalities and may cause significant muscle weakness. However, emerging artificial walking technologies, such as step-initiated, multichannel neuromuscular electrical stimulation (NMES), can substantially improve gait patterns and promote muscle strength in children with spastic CP...
November 2017: Artificial Organs
https://www.readbyqxmd.com/read/29147083/spinal-cord-stimulation-in-failed-back-surgery-syndrome-effects-on-posture-and-gait-a-preliminary-3d-biomechanical-study
#5
L Brugliera, A De Luca, S Corna, M Bertolotto, G A Checchia, M Cioni, P Capodaglio, C Lentino
We studied 8 patients with spinal cord stimulation (SCS) devices which had been previously implanted to treat neuropathic chronic pain secondary to Failed Back Surgery Syndrome. The aim of our study was to investigate the effects of SCS on posture and gait by means of clinical scales (Short Form Health Survey-36, Visual Analogue Scale for pain, and Hamilton Depression Rating Scale) and instrumented evaluation with 3D Gait Analysis using a stereophotogrammetric system. The latter was performed with the SCS device turned both OFF and ON...
2017: Pain Research & Management: the Journal of the Canadian Pain Society
https://www.readbyqxmd.com/read/29145010/the-use-of-hardened-bone-cement-as-an-impaction-grafting-extender-for-revision-hip-arthroplasty
#6
Mark Ruddy, David P FitzPatrick, Kenneth T Stanton
Impaction bone grafting is a method of restoring bone stock to patients who have suffered significant bone loss due to revision total hip surgery. The procedure requires morsellised cancellous bone (MCB) to be impacted into the site of bone loss in order to stabilise the prosthesis with the aim of long term resorption and reintegration of the impacted bone graft. Due to financial cost and the potential to transmit disease, the use of supplementary material, known as an extender, is frequently used to increase the graft material volume...
November 13, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29144991/finite-element-simulation-on-posterior-tibial-tendinopathy-load-transfer-alteration-and-implications-to-the-onset-of-pes-planus
#7
Duo Wai-Chi Wong, Yan Wang, Aaron Kam-Lun Leung, Ming Yang, Ming Zhang
BACKGROUND: Posterior tibial tendinopathy is a challenging foot condition resulting in pes planus, which is difficult to diagnose in the early stage. Prior to the deformity, abnormal internal load transfer and soft tissue attenuation are anticipated. The objective of this study was to investigate the internal load transfer and strain of the ligaments with posterior tibial tendinopathy, and the implications to pes planus and other deformities. METHODS: A three-dimensional finite element model of the foot and ankle was reconstructed from magnetic resonance images of a 28-year-old normal female...
November 3, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/29143300/effect-of-restraining-the-base-of-support-on-the-other-biomechanical-features-in-patients-with-cerebellar-ataxia
#8
C Conte, Mariano Serrao, L Cuius, A Ranavolo, S Conforto, F Pierelli, L Padua
This study aimed to analyze the biomechanical consequences of reducing the base of support in patients with ataxia. Specifically, we evaluated the spatio-temporal parameters, upper- and lower-body kinematics, muscle co-activation, and energy recovery and expenditure. The gaits of 13 patients were recorded using a motion analysis system in unperturbed and perturbed walking conditions. In the latter condition, patients had to walk using the same step width and speed of healthy controls. The perturbed walking condition featured reduced gait speed, step length, hip and knee range of motion, and energy recovery and increased double support duration, gait variability, trunk oscillation, and ankle joint muscle co-activation...
November 15, 2017: Cerebellum
https://www.readbyqxmd.com/read/29141879/lower-limb-biomechanical-analysis-during-an-unanticipated-step-on-a-bump-reveals-specific-adaptations-of-walking-on-uneven-terrains
#9
Fausto A Panizzolo, Sangjun Lee, Taira Miyatake, Denise Martineli Rossi, Christopher Siviy, Jozefien Speeckaert, Ignacio Galiana, Conor J Walsh
Although it is clear that walking over different irregular terrain is associated with altered biomechanics, there is little understanding of how we quickly adapt to unexpected variations in terrain. This study aims to investigate which adaptive strategies humans adopt when performing an unanticipated step on an irregular surface, specifically a small bump. Nine healthy male participants walked at their preferred walking speed along a straight walkway during five conditions: four involving unanticipated bumps of two different heights, and one level walking condition...
November 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29141811/do-gait-patterns-differ-in-men-and-women-with-multiple-sclerosis
#10
Massimiliano Pau, Federica Corona, Giuseppina Pilloni, Micaela Porta, Giancarlo Coghe, Eleonora Cocco
BACKGROUND: Multiple Sclerosis (MS) affects men and women differently from several points of view: prevalence, severity of cognitive impairments and disability accumulation. However, it is unknown whether ambulatory dysfunctions are sex-related. This study investigated the existence of differences in spatio-temporal and kinematic parameters of gait in men and women with MS using 3D gait analysis. METHODS: Gait patterns of 60 people with MS (pwMS, 32F, 28M) with low to moderate disability (average Expanded Disability Status Scale score 3, range 1-5...
November 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/29141630/ct-based-analysis-of-muscle-volume-and-degeneration-of-gluteus-medius-in-patients-with-unilateral-hip-osteoarthritis
#11
Takako Momose, Yutaka Inaba, Hyonmin Choe, Naomi Kobayashi, Taro Tezuka, Tomoyuki Saito
BACKGROUND: The gluteus medius (GMED) affects hip function as an abductor. We evaluated muscle volume and degeneration of the GMED by using CT-based analysis and assessed factors that affect hip abductor strength in patients with unilateral hip osteoarthritis (OA). METHODS: We examined clinical and imaging findings associated with hip abductor strength in consecutive 50 patients with unilateral hip OA. Hip abductor muscle strength and Harris hip score (HHS) were assessed...
November 15, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29139051/subject-specific-finite-element-modelling-of-the-human-foot-complex-during-walking-sensitivity-analysis-of-material-properties-boundary-and-loading-conditions
#12
Mohammad Akrami, Zhihui Qian, Zhemin Zou, David Howard, Chris J Nester, Lei Ren
The objective of this study was to develop and validate a subject-specific framework for modelling the human foot. This was achieved by integrating medical image-based finite element modelling, individualised multi-body musculoskeletal modelling and 3D gait measurements. A 3D ankle-foot finite element model comprising all major foot structures was constructed based on MRI of one individual. A multi-body musculoskeletal model and 3D gait measurements for the same subject were used to define loading and boundary conditions...
November 14, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/29137009/brain-metabolism-in-patients-with-freezing-of-gait-after-hypoxic-ischemic-brain-injury-a-pilot-study
#13
Seo Yeon Yoon, Sang Chul Lee, Na Young Kim, Young-Sil An, Yong Wook Kim
Movement disorders are 1 of the long-term neurological complications that can occur after hypoxic-ischemic brain injury (HIBI). However, freezing of gait (FOG) after HIBI is rare. The aim of this study was to examine the brain metabolism of patients with FOG after HIBI using F-18 fluoro-2-deoxy-D-glucose positron emission tomography (F-18 FDG PET).We consecutively enrolled 11 patients with FOG after HIBI. The patients' overall brain metabolism was measured by F-18 FDG PET, and we compared their regional brain metabolic activity with that from 15 healthy controls using a voxel-by-voxel-based statistical mapping analysis...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29133972/the-relationship-between-the-physical-cost-index-and-knee-extensor-strength-in-children-with-hemiplegic-cerebral-palsy
#14
Kenji Takaki, Yasuaki Kusumoto
[Purpose] Lower extremity strength is a contributing factor to energy efficiency of gait. However, this contribution has not previously been evaluated in children with hemiplegic cerebral palsy (CP). The aim of this study was to evaluate the association between energy consumption, measured by the physical cost index (PCI), and strength of lower extremity, measured by the maximum knee extensor strength (MKES), in children with hemiplegic CP. [Subjects and Methods] Subjects were 10 children (4 males and 6 females; age, 7-17 years) with hemiplegic CP, but no history of orthopedic intervention or botulinum toxin treatment over the 1 year prior to the assessment...
October 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29132335/topical-zoledronic-acid-decreases-micromotion-induced-bone-resorption-in-a-sheep-arthroplasty-model
#15
Thomas Jakobsen, Søren Kold, Juan Shiguetomi-Medina, Jorgen Baas, Kjeld Soballe, Ole Rahbek
BACKGROUND: Initial micromotion of a total hip replacement is associated with aseptic loosening. The use of bisphosphonates could be one way to reduce peri-implant bone resorption induced by micromotion. Bisphosphonates compounds are inhibitors of bone resorption. The aim of this study was to investigate whether local treatment with bisphosphonate would reduce bone resorption and fibrous tissue around an experimental implant subjected to micromotion. METHODS: One micromotion implant were inserted into each medial femoral condyle in ten sheep...
November 13, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29131372/reading-emotion-from-mouse-cursor-motions-affective-computing-approach
#16
Takashi Yamauchi, Kunchen Xiao
Affective computing research has advanced emotion recognition systems using facial expressions, voices, gaits, and physiological signals, yet these methods are often impractical. This study integrates mouse cursor motion analysis into affective computing and investigates the idea that movements of the computer cursor can provide information about emotion of the computer user. We extracted 16-26 trajectory features during a choice-reaching task and examined the link between emotion and cursor motions. Participants were induced for positive or negative emotions by music, film clips, or emotional pictures, and they indicated their emotions with questionnaires...
November 13, 2017: Cognitive Science
https://www.readbyqxmd.com/read/29130977/effects-of-wearable-sensor-based-balance-and-gait-training-on-balance-gait-and-functional-performance-in-healthy-and-patient-populations-a-systematic-review-and-meta-analysis-of-randomized-controlled-trials
#17
Katharina Gordt, Thomas Gerhardy, Bijan Najafi, Michael Schwenk
BACKGROUND: Wearable sensors (WS) can accurately measure body motion and provide interactive feedback for supporting motor learning. OBJECTIVE: This review aims to summarize current evidence for the effectiveness of WS training for improving balance, gait and functional performance. METHODS: A systematic literature search was performed in PubMed, Cochrane, Web of Science, and CINAHL. Randomized controlled trials (RCTs) using a WS exercise program were included...
November 1, 2017: Gerontology
https://www.readbyqxmd.com/read/29130973/frequency-aetiology-and-outcome-of-small-cerebellar-infarction
#18
Zeljka Calic, Cecilia Cappelen-Smith, Ramesh Cuganesan, Craig S Anderson, Miriam Welgampola, Dennis J Cordato
BACKGROUND AND PURPOSE: Strokes due to small (<2 cm) cerebellar infarction are under-recognised, and their profile and aetiology have not been well characterised. We aimed to determine the frequency, clinical features, aetiology, and outcome of small as compared to large cerebellar infarction. METHODS: This study is a retrospective analysis of clinical and imaging features of a prospectively assessed series of 108 consecutive patients with acute cerebellar infarction admitted to Liverpool Hospital, Sydney, NSW, Australia, during 2011-2015...
November 2, 2017: Cerebrovascular Diseases Extra
https://www.readbyqxmd.com/read/29130632/dock3-related-neurodevelopmental-syndrome-biallelic-intragenic-deletion-of-dock3-in-a-boy-with-developmental-delay-and-hypotonia
#19
Aiko Iwata-Otsubo, Alyssa L Ritter, Brooke Weckselbatt, Nicole R Ryan, David Burgess, Laura K Conlin, Kosuke Izumi
Dedicator of cytokinesis (DOCK) family are evolutionary conserved guanine nucleotide exchange factors (GEFs) for the Rho GTPases, Rac, and Cdc42. DOCK3 functions as a GEF for Rac1, and plays an important role in promoting neurite and axonal growth by stimulating actin dynamics and microtubule assembly pathways in the central nervous system. Here we report a boy with developmental delay, hypotonia, and ataxia due to biallelic DOCK3 deletion. Chromosomal single nucleotide polymorphism (SNP) microarray analysis detected a 170 kb homozygous deletion including exons 6-12 of the DOCK3 gene at 3p21...
November 12, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/29128930/prognostic-value-of-amyloid-pet-scan-in-normal-pressure-hydrocephalus
#20
Hyemin Jang, Seong Beom Park, Yeshin Kim, Ko Woon Kim, Jung Il Lee, Sung Tae Kim, Kyung Han Lee, Eun-Suk Kang, Yeong Sim Choe, Sang Won Seo, Hee Jin Kim, Yeo Jin Kim, Cindy W Yoon, Duk L Na
Amyloid positron emission tomography ([18F] florbetaben (FBB) PET) can be used to determine concomitant Alzheimer's disease (AD) in idiopathic normal pressure hydrocephalus (iNPH) patients. FBB PET scans and the tap test were performed in 31 patients with clinically suspected iNPH, and amyloid positive (iNPH/FBB+) and negative (iNPH/FBB-) groups were compared with respect to clinical characteristics. We evaluated prognostic value of FBB PET scans by analyzing the response to the tap test using a linear mixed model...
November 11, 2017: Journal of Neurology
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