keyword
MENU ▼
Read by QxMD icon Read
search

biomechanics, foot

keyword
https://www.readbyqxmd.com/read/27913178/estimating-the-material-properties-of-heel-pad-sub-layers-using-inverse-finite-element-analysis
#1
Nafiseh Ahanchian, Christopher J Nester, David Howard, Lei Ren, Daniel Parker
Detailed information about the biomechanical behaviour of plantar heel pad tissue contributes to our understanding of load transfer when the foot impacts the ground. The objective of this work was to obtain the hyperelastic and viscoelastic material properties of heel pad sub-layers (skin, micro-chamber and macro-chamber layers) in-vivo. An anatomically detailed 3D Finite Element model of the human heel was used to derive the sub-layer material properties. A combined ultrasound imaging and motorised platform system was used to compress heel pad and to create input data for the Finite Element model...
November 29, 2016: Medical Engineering & Physics
https://www.readbyqxmd.com/read/27904801/midfoot-and-forefoot-involvement-in-lateral-ankle-sprains-and-chronic-ankle-instability-part-1-anatomy-and-biomechanics
#2
John J Fraser, Mark A Feger, Jay Hertel
: The modern human foot is the culmination of more than five million years of evolution. The ankle-foot complex absorbs forces during loading, accommodates uneven surfaces, and acts as a lever for efficient propulsion. The ankle-foot complex has six independent functional segments that should be understood for proper assessment and treatment of foot and ankle injuries: the shank, rearfoot, midfoot, lateral forefoot, and the medial forefoot. The compliance of the individual segments of the foot is dependent on velocity, task, and active and passive coupling mechanisms within each of the foot segments...
December 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27904791/current-concepts-in-biomechanical-interventions-for-patellofemoral-pain
#3
Richard W Willy, Erik P Meira
: Patellofemoral pain (PFP) has historically been a complex and enigmatic issue. Many of the factors thought to relate to PFP remain after patients' symptoms have resolved making their clinical importance difficult to determine. The tissue homeostasis model proposed by Dye in 2005 can assist with understanding and implementing biomechanical interventions for PFP. Under this model, the goal of interventions for PFP should be to re-establish patellofemoral joint (PFJ) homeostasis through a temporary alteration of load to the offended tissue, followed by incrementally restoring the envelope of function to the baseline level or higher...
December 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27904787/biomechanics-and-pathomechanics-of-the-patellofemoral-joint
#4
Janice K Loudon
The patellofemoral joint is a joint that can be an area of concern for athletes of various sports and ages. The joint is somewhat complex with multiple contact points and numerous tissues that attach to the patella. Joint forces are variable and depend on the degree of knee flexion and whether the foot is in contact with the ground. The sports medicine specialist must have a good working knowledge of the anatomy and biomechanics of the patellofemoral joint in order to treat it effectively.
December 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27895574/robot-assisted-rehabilitation-of-ankle-plantar-flexors-spasticity-a-3-month-study-with-proprioceptive-neuromuscular-facilitation
#5
Zhihao Zhou, Yao Sun, Ninghua Wang, Fan Gao, Kunlin Wei, Qining Wang
In this paper, we aim to investigate the effect of proprioceptive neuromuscular facilitation (PNF)-based rehabilitation for ankle plantar flexors spasticity by using a Robotic Ankle-foot Rehabilitation System (RARS). A modified robot-assisted system was proposed, and seven poststroke patients with hemiplegic spastic ankles participated in a 3-month robotic PNF training. Their impaired sides were used as the experimental group, while their unimpaired sides as the control group. A robotic intervention for the experimental group started from a 2-min passive stretching to warming-up or relaxing the soleus and gastrocnemius muscles and also ended with the same one...
2016: Frontiers in Neurorobotics
https://www.readbyqxmd.com/read/27885329/physical-performance-outcomes-and-biomechanical-correlates-from-the-32-week-yoga-empowers-seniors-study
#6
Man-Ying Wang, Gail A Greendale, Sean S-Y Yu, George J Salem
Background. Yoga Empowers Seniors Study (YESS) quantified physical demands associated with yoga performance using biomechanical methods. This study evaluated the efficacy of the program on physical function outcomes. Methods. Twenty community-dwelling older adults aged 70.7 ± 3.8 years attended biweekly 60-minute Hatha yoga classes for 32 weeks. Four domains of the physical measurements including (1) functional performance, (2) flexibility, (3) muscle strength, and (4) balance were taken at the baseline, 16-week and 32-week time points...
2016: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/27882360/static-and-dynamic-predictors-of-foot-progression-angle-in-individuals-with-and-without-diabetes-mellitus-and-peripheral-neuropathy
#7
Ericka N Merriwether, Mary K Hastings, Michael J Mueller, Kathryn L Bohnert, Michael J Strube, Darrah R Snozek, David R Sinacore
INTRODUCTION: Foot progression angle (FPA) is a predictor of elevated regional plantar stresses and loads, which are indicators of dermal injury risk in individuals with diabetes mellitus and peripheral neuropathy (DMPN). FPA accounts for 15-45% of the variance in plantar stresses and loads in adults with DMPN. However, the biomechanical factors underlying an "out-toeing" gait pattern in this clinical population have not been examined. The primary purpose of this study was to identify static and dynamic predictors of foot progression angle magnitude in adults with and without DMPN...
2016: Annals of Gerontology and Geriatric Research
https://www.readbyqxmd.com/read/27871421/mesenchymal-stem-cell-bearing-sutures-for-tendon-repair-and-healing-in-the-foot-and-ankle
#8
REVIEW
Eric W Tan, Lew C Schon
Improving the quality and strength of soft tissue repairs remains an important area of orthopedic research and innovation. The need for immobilization and early motion is an important balance essential for the successful treatment of tendon repair and reconstruction. Mesenchymal stem cell (MSC)-bearing sutures represent an emerging biological augmentation to traditional suture repair. Two previous large studies using stem cell sutures in rat Achilles tendon models have demonstrated early increased biomechanical strength and significantly increased ultimate failure strength...
December 2016: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/27871100/biomechanical-response-of-military-booted-and-unbooted-foot-ankle-tibia-from-vertical-loading
#9
Frank A Pintar, Michael B Schlick, Narayan Yoganandan, Liming Voo, Andrew C Merkle, Michael Kleinberger
A new anthropomorphic test device (ATD) is being developed by the US Army to be responsive to vertical loading during a vehicle underbody blast event. To obtain design parameters for the new ATD, a series of non-injurious tests were conducted to derive biofidelity response corridors for the foot-ankle complex under vertical loading. Isolated post mortem human surrogate (PMHS) lower leg specimens were tested with and without military boot and in different initial foot-ankle positions. Instrumentation included a six-axis load cell at the proximal end, three-axis accelerometers at proximal and distal tibia, and calcaneus, and strain gages...
November 2016: Stapp Car Crash Journal
https://www.readbyqxmd.com/read/27865317/revisional-surgery-of-the-diabetic-charcot-foot-and-ankle
#10
REVIEW
Patrick R Burns, Spencer J Monaco
Charcot neuroarthropathy (CN) is a difficult problem for the foot and ankle surgeon. If surgery is required, little is known or available regarding the best methods and timing. When the initial attempt of reconstruction fails, revision of CN is even more demanding. One must take in to account all aspects, including nutrition, vascular status, infection control, short- and long-term blood glucose management, as well as other factors requiring laboratory monitoring and consult services. Once optimized, the biomechanics of the deformity can be addressed and decisions can be made on fixation devices...
January 2017: Clinics in Podiatric Medicine and Surgery
https://www.readbyqxmd.com/read/27865313/surgical-equinus-correction-for-the-diabetic-charcot-foot-what-the-evidence-reveals
#11
REVIEW
Claire M Capobianco
Triceps surae contracture, or equinus, is a known deforming force in the foot and ankle. Biomechanical studies have shown that ankle equinus significantly alters gait and plantar pressures, and in the diabetic neuropathic patient population, this can propagate plantar ulceration and/or Charcot neuroarthropathy (CN). Surgical correction of equinus is globally and frequently used to aid in plantar wound healing in the neuropathic diabetic patient, with and without CN. Treatment guidelines for equinus correction in this medically complex population are undefined and lack evidence from high-quality published peer-reviewed studies...
January 2017: Clinics in Podiatric Medicine and Surgery
https://www.readbyqxmd.com/read/27858688/characteristics-of-foot-morphology-and-their-relationship-to-gender-age-body-mass-index-and-bilateral-asymmetry-in-japanese-adults
#12
Xiaoguang Zhao, Takehiko Tsujimoto, Bokun Kim, Yasutomi Katayama, Kiyoji Tanaka
BACKGROUND: Different characteristics of foot morphology are commonly accompanied by altering lower extremity biomechanical characteristics and foot function. Clarifying what factors affect foot morphology is helpful in understanding the basis of foot deformity and foot dysfunction. OBJECTIVE: The aim of this study was to investigate characteristics of foot morphology and whether related factors such as gender, age, body mass index (BMI) and bilateral asymmetry have an impact on foot morphology...
November 11, 2016: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/27856143/finite-element-modelling-of-the-foot-for-clinical-application-a-systematic-review
#13
REVIEW
Sara Behforootan, Panagiotis Chatzistergos, Roozbeh Naemi, Nachiappan Chockalingam
Over the last two decades finite element modelling has been widely used to give new insight on foot and footwear biomechanics. However its actual contribution for the improvement of the therapeutic outcome of different pathological conditions of the foot, such as the diabetic foot, remains relatively limited. This is mainly because finite element modelling has only been used within the research domain. Clinically applicable finite element modelling can open the way for novel diagnostic techniques and novel methods for treatment planning/optimisation which would significantly enhance clinical practice...
November 15, 2016: Medical Engineering & Physics
https://www.readbyqxmd.com/read/27852621/effect-of-early-supervised-physiotherapy-on-recovery-from-acute-ankle-sprain-randomised-controlled-trial
#14
Robert J Brison, Andrew G Day, Lucie Pelland, William Pickett, Ana P Johnson, Alice Aiken, David R Pichora, Brenda Brouwer
OBJECTIVE:  To assess the efficacy of a programme of supervised physiotherapy on the recovery of simple grade 1 and 2 ankle sprains. DESIGN:  A randomised controlled trial of 503 participants followed for six months. SETTING:  Participants were recruited from two tertiary acute care settings in Kingston, ON, Canada. PARTICIPANTS:  The broad inclusion criteria were patients aged ≥16 presenting for acute medical assessment and treatment of a simple grade 1 or 2 ankle sprain...
November 16, 2016: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/27849290/the-prevention-of-diabetic-foot-ulceration-how-biomechanical-research-informs-clinical-practice
#15
Frank E DiLiberto, Judith F Baumhauer, Deborah A Nawoczenski
Background: Implementation of interprofessional clinical guidelines for the prevention of neuropathic diabetic foot ulceration has demonstrated positive effects regarding ulceration and amputation rates. Current foot care recommendations are primarily based on research regarding the prevention of ulcer recurrence and focused on reducing the magnitude of plantar stress (pressure overload). Yet, foot ulceration remains to be a prevalent and debilitating consequence of Diabetes Mellitus...
November 16, 2016: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/27834573/minimum-detectable-change-in-medial-tibiofemoral-contact-force-parameters-derivation-and-application-to-a-load-altering-intervention
#16
Joaquin Barrios, John Willson
Medial tibiofemoral joint contact forces can be estimated using musculoskeletal models. To assess change in these forces that accompany load-modifying interventions, minimum detectable change (MDC) thresholds must be established. The primary study purpose was to derive MDCs for medial tibiofemoral peak force and force impulse during walking. The secondary purpose was to identify the proportions of individuals exhibiting reductions greater than these MDCs when walking with lateral foot wedging. Eight healthy individuals provided three-dimensional gait data over three test sessions to serve as inputs for an inverse dynamics-driven medial tibiofemoral contact force model, from which MDCs for peak force and impulse were derived...
November 11, 2016: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/27834504/redistribution-of-mechanical-work-at-the-knee-and-ankle-joints-during-fast-running-in-minimalist-shoes
#17
Joel T Fuller, Jonathan D Buckley, Margarita D Tsiros, Nicholas A T Brown, Dominic Thewlis
CONTEXT:  Minimalist shoes have been suggested as a way to alter running biomechanics to improve running performance and reduce injuries. However, to date, researchers have only considered the effect of minimalist shoes at slow running speeds. OBJECTIVE:  To determine if runners change foot-strike pattern and alter the distribution of mechanical work at the knee and ankle joints when running at a fast speed in minimalist shoes compared with conventional running shoes...
November 11, 2016: Journal of Athletic Training
https://www.readbyqxmd.com/read/27824657/effect-of-footwear-on-joint-pain-and-function-in-older-adults-with-lower-extremity-osteoarthritis
#18
Amy Wagner, Sarah Luna
BACKGROUND AND PURPOSE: Lower extremity osteoarthritis (OA) is a common condition among older adults; given the risks of surgical and pharmaceutical interventions, conservative, lower-cost management options such as footwear warrant further investigation. This systematic review investigated the effects of footwear, including shoe inserts, in reducing lower extremity joint pain and improving gait, mobility, and quality of life in older adults with OA. METHODS: The CINAHL, SPORTDiscus, PubMed, RECAL, and Web of Knowledge databases were searched for publications from January 1990 to September 2014, using the terms "footwear," "shoes," "gait," "pain," and "older adult...
November 7, 2016: Journal of Geriatric Physical Therapy
https://www.readbyqxmd.com/read/27812961/new-insights-into-statistical-learning-and-chunk-learning-in-implicit-sequence-acquisition
#19
Yue Du, Jane E Clark
Implicit sequence learning is ubiquitous in our daily life. However, it is unclear whether the initial acquisition of sequences results from learning to chunk items (i.e., chunk learning) or learning the underlying statistical regularities (i.e., statistical learning). By grouping responses with or without a distinct chunk or statistical structure into segments and comparing these responses, previous studies have demonstrated both chunk and statistical learning. However, few studies have considered the response sequence as a whole and examined the temporal dependency of the entire sequence, where the temporal dependencies could disclose the internal representations of chunk and statistical learning...
November 3, 2016: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/27812455/kinetics-and-kinematics-of-diabetic-foot-in-type-2-diabetes-mellitus-with-and-without-peripheral-neuropathy-a-systematic-review-and-meta-analysis
#20
REVIEW
Animesh Hazari, Arun G Maiya, K N Shivashankara, Ioannis Agouris, Ashma Monteiro, Radhika Jadhav, Sampath Kumar, C G Shashi Kumar, Shreemathi S Mayya
BACKGROUND: Diabetes mellitus patients are at increased risk of developing diabetic foot with peripheral neuropathy, vascular and musculoskeletal complications. Therefore they are prone to develop frequent and often foot problems with a relative high risk of infection, gangrene and amputation. In addition, altered plantar pressure distribution is an important etiopathogenic risk factor for the development of foot ulcers. Thus the review on study of foot kinematic and kinetic in type 2 diabetes mellitus to understand the biomechanical changes is important...
2016: SpringerPlus
keyword
keyword
97831
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"