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https://www.readbyqxmd.com/read/29350089/a-comparative-analysis-of-internal-bone-remodelling-concepts-in-a-novel-implant-for-direct-skeletal-attachment-of-limb-prosthesis-evaluation-a-finite-element-analysis
#1
Piotr Prochor, Eugeniusz Sajewicz
Nowadays, numerous internal bone remodelling concepts are under development, in order to estimate long-term functionality of implants by evaluating the intensity of stress-shielding effect. This effect is also analysed for the implants for direct skeletal attachment, considered as a better exoprosthesis fixation method than prosthetic sockets. Most of bone remodelling approaches are based on basic concepts, differing with certain assumptions, which may affect the accuracy of the results. This article compares commonly used internal bone remodelling concepts and evaluates the functionality of the proposed Limb Prosthesis Osseointegrated Fixation System for direct skeletal attachment of limb prosthesis in comparison with two currently available implants: the Intraosseous Transcutaneous Amputation Prosthesis and the Osseointegrated Prostheses for the Rehabilitation of Amputees...
January 1, 2018: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29348989/signs-and-symptoms-of-acoustic-neuroma-at-initial-presentation-an-exploratory-analysis
#2
Robert W Foley, Shahram Shirazi, Robert M Maweni, Kay Walsh, Rory McConn Walsh, Mohsen Javadpour, Daniel Rawluk
Introduction The objective of this study was to describe the most common clinical features associated with an acoustic neuroma diagnosis and to identify those features associated with larger tumour size at initial diagnosis. Methods The clinical information of 945 consecutive patients diagnosed with acoustic neuroma at a single centre between 1992 and 2015 was analysed. Clinical features were examined and the relationship between these features and tumour size (>2.5 cm) was analysed using descriptive statistics and logistic regression analysis...
November 15, 2017: Curēus
https://www.readbyqxmd.com/read/29347868/differential-white-matter-regional-alterations-in-motor-subtypes-of-early-drug-naive-parkinson-s-disease-patients
#3
Ming-Ching Wen, Hannah S E Heng, Zhonghao Lu, Zheyu Xu, Ling Ling Chan, Eng King Tan, Louis C S Tan
BACKGROUND: Parkinson's disease (PD) can be classified into tremor dominant (TD) and postural instability and gait difficulty (PIGD) subtypes with TD considered as the benign subtype. The neural alterations of the 2 subtypes in the early stages before administration of medications remain elusive. OBJECTIVE: This study assessed the subtype-related white matter (WM) microstructural features in newly diagnosed and drug-naive PD patients from the Parkinson's Progression Markers Initiative (PPMI)...
January 1, 2018: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/29346526/what-is-the-impact-of-physical-activity-and-physical-function-on-the-development-of-multimorbidity-in-older-adults-over-time-a-population-based-cohort-study
#4
Aine Ryan, Catriona Murphy, Fiona Boland, Rose Galvin, Susan M Smith
Background: Multimorbidity is recognised internationally as having a serious impact on health outcomes. It is associated with reduced quality of life, increased healthcare utilisation and future functional decline. Physical activity is associated with good health and psychological well-being. The aim of this study was to identify the impact of physical activity and physical function on the development and worsening of multimorbidity over time. Methods: Using The Irish Longitudinal Study on Ageing (TILDA), we analysed 4,823 participants >50 years with and without multimorbidity...
January 13, 2018: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/29340933/forces-generated-by-vastus-lateralis-and-vastus-medialis-decrease-with-increasing-stair-descent-speed
#5
Elena J Caruthers, Kassandra K Oxendale, Jacqueline M Lewis, Ajit M W Chaudhari, Laura C Schmitt, Thomas M Best, Robert A Siston
Stair descent (SD) is a common, difficult task for populations who are elderly or have orthopaedic pathologies. Joint torques of young, healthy populations during SD increase at the hip and ankle with increasing speed but not at the knee, contrasting torque patterns during gait. To better understand the sources of the knee torque pattern, we used dynamic simulations to estimate knee muscle forces and how they modulate center of mass (COM) acceleration across SD speeds (slow, self-selected, and fast) in young, healthy adults...
January 16, 2018: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/29339984/functional-vs-traditional-analysis-in-biomechanical-gait-data-an-alternative-statistical-approach
#6
Jihong Park, Matthew K Seeley, Devin Francom, C Shane Reese, J Ty Hopkins
In human motion studies, discrete points such as peak or average kinematic values are commonly selected to test hypotheses. The purpose of this study was to describe a functional data analysis and describe the advantages of using functional data analyses when compared with a traditional analysis of variance (ANOVA) approach. Nineteen healthy participants (age: 22 ± 2 yrs, body height: 1.7 ± 0.1 m, body mass: 73 ± 16 kg) walked under two different conditions: control and pain+effusion. Pain+effusion was induced by injection of sterile saline into the joint capsule and hypertonic saline into the infrapatellar fat pad...
December 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/29339922/effect-of-rhythmic-auditory-cueing-on-gait-in-cerebral-palsy-a-systematic-review-and-meta-analysis
#7
REVIEW
Shashank Ghai, Ishan Ghai, Alfred O Effenberg
Auditory entrainment can influence gait performance in movement disorders. The entrainment can incite neurophysiological and musculoskeletal changes to enhance motor execution. However, a consensus as to its effects based on gait in people with cerebral palsy is still warranted. A systematic review and meta-analysis were carried out to analyze the effects of rhythmic auditory cueing on spatiotemporal and kinematic parameters of gait in people with cerebral palsy. Systematic identification of published literature was performed adhering to Preferred Reporting Items for Systematic Reviews and Meta-Analyses and American Academy for Cerebral Palsy and Developmental Medicine guidelines, from inception until July 2017, on online databases: Web of Science, PEDro, EBSCO, Medline, Cochrane, Embase and ProQuest...
2018: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/29332630/effects-of-a-program-of-cognitive-behavioural-group-therapy-vestibular-rehabilitation-and-psychoeducational-explanations-on-patients-with-dizziness-and-no-quantified-balance-deficit-compared-to-patients-with-dizziness-and-a-quantified-balance-deficit
#8
D A Schmid, J H J Allum, M Sleptsova, S Gross, J Gaab, A Welge-Lüssen, R Schaefert, W Langewitz
BACKGROUND: We examined whether a program combining cognitive-behavioural therapy (CBT), vestibular rehabilitation (VR) and psychoeducation is equally effective in improving psychometric measures in patients with dizziness independent of a balance deficit. Measures of patients with dizziness only (DO) were compared to those of patients also having a quantified balance deficit (QBD). METHODS: 32 patients (23 female, 9 male) with persistent dizziness were analysed as 2 groups based on stance and gait balance control: those with QBD (pathological balance) or DO (normal balance)...
February 2018: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/29326087/a-multicomponent-exercise-program-improves-physical-function-in-long-term-nursing-home-residents-a-randomized-controlled-trial
#9
Haritz Arrieta, Chloe Rezola, Idoia Zarrazquin, Iñaki Echeverria, Jose Javier Yanguas, Miren Iturburu, Susana Maria Gil, Ana Rodriguez-Larrad, Jon Irazusta
To investigate the impact of a multicomponent exercise program on anthropometry, physical function, and physical activity on older adults living in long-term nursing homes (LTNH), we conducted a randomized controlled trial involving 112 participants aged 84.9 ± 6.9 years. Participants were randomly assigned to an intervention (IG) or control group (CG). The IG participated in a 3-month multicomponent exercise intervention focused on strength, balance, stretching exercises, and walking recommendations...
January 8, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29313896/great-ape-walking-kinematics-implications-for-hominoid-evolution
#10
Emma M Finestone, Mary H Brown, Stephen R Ross, Herman Pontzer
OBJECTIVES: Great apes provide a point of reference for understanding the evolution of locomotion in hominoids and early hominins. We assessed (1) the extent to which great apes use diagonal sequence, diagonal couplet gaits, like other primates, (2) the extent to which gait and posture vary across great apes, and (3) the role of body mass and limb proportions on ape quadrupedal kinematics. METHODS: High-speed digital video of zoo-housed bonobos (Pan paniscus, N = 8), chimpanzees (Pan troglodytes, N = 13), lowland gorillas (Gorilla gorilla, N = 13), and orangutans (Pongo spp...
January 4, 2018: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/29309313/automated-mechanical-peripheral-stimulation-improves-gait-parameters-in-subjects-with-parkinson-s-disease-and-freezing-of-gait-a-randomized-clinical-trial
#11
Camila Pinto, Aline de Souza Pagnussat, Ana Francisca Rozin Kleiner, Ritchele Redivo Marchese, Ana Paula Salazar, Carlos R M Rieder, Manuela Galli
OBJECTIVE: This study aimed to assess spatiotemporal gait parameters and lower limbs range of motion (ROM) in subjects with Parkinson's Disease (PD) and freezing of gait (FOG), treated with Automated Mechanical Peripheral Stimulation (AMPS) or AMPS SHAM (placebo). DESIGN: This randomized clinical trial included thirty subjects allocated into two groups: AMPS (15 subjects with PD) and AMPS SHAM (15 subjects with PD). Fourteen age-matched healthy subjects were also included as a REFERENCE group...
January 5, 2018: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/29300839/associations-of-sarcopenia-definitions-and-their-components-with-the-incidence-of-recurrent-falling-and-fractures-the-longitudinal-aging-study-amsterdam
#12
Laura A Schaap, Natasja M van Schoor, Paul Lips, Marjolein Visser
Background: The aim was to investigate the associations of sarcopenia as defined by European Working Group on Sarcopenia in Older People (EWGSOP) and Foundation for the National Institutes of Health (FNIH) Sarcopenia Project, and their underlying components, with the incidence of recurrent falling and fractures. Methods: In 498 older older men and women (mean age 75.2 (SD 6.4)) from the Longitudinal Aging Study Amsterdam (LASA), the sarcopenia components lean mass (DXA), handgrip strength (handheld dynamometer) and gait speed were measured...
December 30, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/29300426/physical-frailty-is-associated-with-longitudinal-decline-in-global-cognitive-function-in-non-demented-older-adults-a-prospective-study
#13
S Chen, T Honda, K Narazaki, T Chen, H Kishimoto, Y Haeuchi, S Kumagai
OBJECTIVES: To assess the relationship between physical frailty and subsequent decline in global cognitive function in the non-demented elderly. DESIGN AND SETTING: A prospective population-based study in a west Japanese suburban town, with two-year follow-up. PARTICIPANTS: Community-dwellers aged 65 and older without placement in long-term care, and not having a history of dementia, Parkinson's disease and depression at baseline, who participated in the cohort of the Sasaguri Genkimon Study and underwent follow-up assessments two years later (N = 1,045)...
2018: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/29300415/physical-performance-and-serum-25-oh-vitamin-d-status-in-community-dwelling-old-mobility-limited-adults-a-cross-sectional-study
#14
Å von Berens, T Cederholm, R A Fielding, T Gustafsson, D Kirn, J Laussen, M Nydahl, T G Travison, K Reid, A Koochek
OBJECTIVES: To examine the potential association between serum 25(OH) vitamin D and the performance on the Short Physical Performance Battery (SPPB) including the sub-components; five repeated chair stands test, 4 meters walk test and balance in older mobility-limited community-dwelling men and women. DESIGN: A cross sectional study was performed in American and Swedish subjects who were examined for potential participation in a combined exercise and nutrition intervention trial...
2018: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/29297156/deep-white-matter-hyperintensities-microstructural-integrity-and-dual-task-walking-in-older-people
#15
Tabassom Ghanavati, Myriam Sillevis Smitt, Stephen R Lord, Perminder Sachdev, Wei Wen, Nicole A Kochan, Henry Brodaty, Kim Delbaere
To examine neural, physiological and cognitive influences on gait speed under single and dual-task conditions. Sixty-two community-dwelling older people (aged 80.0 ± 4.2 years) participated in our study. Gait speed was assessed with a timed 20-meter walk under single and dual-task (reciting alternate letters of the alphabet) conditions. Participants also underwent tests to estimate physiological fall risk based on five measures of sensorimotor function, cognitive function across five domains, brain white matter (WM) hyperintensities and WM microstructural integrity by measuring fractional anisotropy (FA)...
January 3, 2018: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/29289581/physical-exercise-improves-strength-balance-mobility-and-endurance-in-people-with-cognitive-impairment-and-dementia-a-systematic-review
#16
Freddy Mh Lam, Mei-Zhen Huang, Lin-Rong Liao, Raymond Ck Chung, Timothy Cy Kwok, Marco Yc Pang
QUESTION: Does physical exercise training improve physical function and quality of life in people with cognitive impairment and dementia? Which training protocols improve physical function and quality of life? How do cognitive impairment and other patient characteristics influence the outcomes of exercise training? DESIGN: Systematic review with meta-analysis of randomised trials. PARTICIPANTS: People with mild cognitive impairment or dementia as the primary diagnosis...
December 27, 2017: Journal of Physiotherapy
https://www.readbyqxmd.com/read/29284059/spatiotemporal-gait-characteristics-in-patients-with-copd-during-the-gait-real-time-analysis-interactive-lab-based-6-minute-walk-test
#17
Wai-Yan Liu, Martijn A Spruit, Jeannet M Delbressine, Paul J Willems, Frits M E Franssen, Emiel F M Wouters, Kenneth Meijer
BACKGROUND AND AIM: Overground gait assessment is limited by the analysis of multiple strides or both spatiotemporal gait characteristics, while fixed speed treadmill walking restricts natural gait speed variations. The Gait Real-time Analysis Interactive Lab (GRAIL)-based 6-minute walk test (6MWT) enables 3D motion analysis and self-paced treadmill walking, and could provide insight in gait alterations in patients with chronic obstructive pulmonary disease (COPD). The aim of this study is to compare spatiotemporal gait characteristics between patients with COPD and healthy elderly during the GRAIL-based 6MWT...
2017: PloS One
https://www.readbyqxmd.com/read/29281995/prevalence-and-correlates-of-frailty-in-an-older-rural-african-population-findings-from-the-haalsi-cohort-study
#18
Collin F Payne, Alisha Wade, Chodziwadziwa W Kabudula, Justine I Davies, Angela Y Chang, F Xavier Gomez-Olive, Kathleen Kahn, Lisa F Berkman, Stephen M Tollman, Joshua A Salomon, Miles D Witham
BACKGROUND: Frailty is a key predictor of death and dependency, yet little is known about frailty in sub-Saharan Africa despite rapid population ageing. We describe the prevalence and correlates of phenotypic frailty using data from the Health and Aging in Africa: Longitudinal Studies of an INDEPTH Community cohort. METHODS: We analysed data from rural South Africans aged 40 and over. We used low grip strength, slow gait speed, low body mass index, and combinations of self-reported exhaustion, decline in health, low physical activity and high self-reported sedentariness to derive nine variants of a phenotypic frailty score...
December 28, 2017: BMC Geriatrics
https://www.readbyqxmd.com/read/29278887/the-diagnostic-and-prognostic-value-of-a-dual-tasking-paradigm-in-a-memory-clinic
#19
Malene Schjnning Nielsen, Anja Hviid Simonsen, Volkert Siersma, Steen Gregers Hasselbalch, Peter Hoegh
BACKGROUND: Daily living requires the ability to perform dual-tasking. As cognitive skills decrease in dementia, performing a cognitive and motor task simultaneously become increasingly challenging and subtle gait abnormalities may even be present in pre-dementia stages. Therefore, a dual-tasking paradigm, such as the Timed Up and Go-Dual Task (TUG-DT), may be useful in the diagnostic assessment of mild cognitive impairment (MCI). OBJECTIVE: To investigate the diagnostic and prognostic ability of a dual-tasking paradigm in patients with MCI or mild Alzheimer's disease (AD) and to evaluate the association between the dual-tasking paradigm and cerebrospinal fluid (CSF) AD biomarkers...
December 16, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29278297/association-between-statin-use-and-physical-function-among-community-dwelling-older-japanese-adults
#20
Hisashi Kawai, Kazushige Ihara, Takeshi Kera, Hirohiko Hirano, Yoshinori Fujiwara, Masashi Tanaka, Motonaga Kojima, Shuichi Obuchi
AIM: Statin-associated muscle symptoms (SAMS) are the muscle-related side-effects of statins, but the association between statin use and physical function among community-dwelling older adults is unclear. The objective of the present study was to examine the association between statin use and physical function among community-dwelling older Japanese adults by considering the risk factors of statin-associated muscle symptoms. METHODS: The participants were 1022 community-dwelling older adults aged 65-88 years, who participated in comprehensive health checkups from 2013 to 2015...
December 26, 2017: Geriatrics & Gerontology International
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