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https://www.readbyqxmd.com/read/28499137/a-comparison-of-the-ground-reaction-force-frequency-content-during-rearfoot-and-non-rearfoot-running-patterns
#1
Allison H Gruber, W Brent Edwards, Joseph Hamill, Timothy R Derrick, Katherine A Boyer
Running with a non-rearfoot pattern has been claimed to reduce injury risk because the impact peak in the vertical ground reaction force (GRF) is visually absent in the time-domain compared with a rearfoot pattern. However, running results in a rapid deceleration of the lower extremity segments immediately following initial contact with the ground, regardless of footfall pattern. Therefore, the frequency content of the GRF is expected to contain evidence of this collision. The purpose of the present study was to characterize the waveform components of the GRF generated during the impact phase by habitual rearfoot and habitual non-rearfoot pattern groups using the continuous wavelet transform...
April 28, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28483559/effect-of-taping-on-multi-segmental-foot-kinematic-patterns-during-walking-in-persons-with-chronic-ankle-instability
#2
Bart Dingenen, Kevin Deschamps, Frauke Delchambre, Evelien Van Peer, Filip F Staes, Giovanni A Matricali
OBJECTIVES: To evaluate multi-segmental foot kinematic patterns in chronic ankle instability (CAI) participants during walking, and to investigate the influence of high-Dye and low-Dye taping on these kinematic patterns. DESIGN: Cross-sectional study. METHODS: Kinematic data of 12 non-injured controls and 15 CAI participants were measured with a three-dimensional motion analysis system during barefoot walking. In addition, the CAI participants walked with high-Dye and low-Dye taping...
April 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28483557/six-week-transition-to-minimalist-shoes-improves-running-economy-and-time-trial-performance
#3
Joel T Fuller, Dominic Thewlis, Margarita D Tsiros, Nicholas A T Brown, Jonathan D Buckley
OBJECTIVES: This study investigated if gradually introducing runners to minimalist shoes during training improved running economy and time-trial performance compared to training in conventional shoes. Changes in stride rate, stride length, footfall pattern and ankle plantar-flexor strength were also investigated. DESIGN: Randomised parallel intervention trial. METHODS: 61 trained runners gradually increased the amount of running performed in either minimalist (n=31) or conventional (n=30) shoes during a six-week standardised training program...
April 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28481686/lower-extremity-joint-loads-in-habitual-rearfoot-and-mid-forefoot-strike-runners-with-normal-and-shortened-stride-lengths
#4
Elizabeth R Boyer, Timothy R Derrick
Our purpose was to compare joint loads between habitual rearfoot (hRF) and habitual mid/forefoot strikers (hFF), rearfoot (RFS) and mid/forefoot strike (FFS) patterns, and shorter stride lengths (SLs). Thirty-eight hRF and hFF ran at their normal SL, 5% and 10% shorter, as well as with the opposite foot strike. Three-dimensional ankle, knee, patellofemoral (PF) and hip contact forces were calculated. Nearly all contact forces decreased with a shorter SL (1.2-14.9% relative to preferred SL). In general, hRF had higher PF (hRF-RFS: 10...
May 8, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28476393/is-it-worth-discriminating-against-patients-who-smoke-a-systematic-literature-review-on-the-effects-of-tobacco-use-in-foot-and-ankle-surgery
#5
REVIEW
Jason H Kim, Sandeep Patel
Although numerous studies have linked smoking with lower extremity wound and bone healing complications, a comprehensive study on the effects of smoking in foot and ankle surgery has not yet been reported. The purpose of the present study was to report the results of our systemic literature review, identifying the effects of tobacco use on common foot and ankle procedures. The systematic literature review was performed according to guidelines set by the PRIMSA statement (Preferred Reporting Items for Systematic Review and Meta-Analyses)...
May 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28460254/foot-segmental-motion-and-coupling-in-stage-ii-and-iii-tibialis-posterior-tendon-dysfunction
#6
Maarten Van de Velde, Giovanni Arnoldo Matricali, Sander Wuite, Charlotte Roels, Filip Staes, Kevin Deschamps
BACKGROUND: Classification systems developed in the field of posterior tibialis tendon dysfunction omit to include dynamic measurements. Since this may negatively affect the selection of the most appropriate treatment modality, studies on foot kinematics are highly recommended. Previous research characterised the foot kinematics in patients with posterior tibialis tendon dysfunction. However, none of the studies analysed foot segmental motion synchrony during stance phase, nor compared the kinematic behaviour of the foot in presence of different posterior tibialis tendon dysfunction stages...
June 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28460179/manipulation-of-foot-strike-and-footwear-increases-achilles-tendon-loading-during-running
#7
Hannah Rice, Mubarak Patel
BACKGROUND: The Achilles tendon is the most common site of tendon overuse injury in humans. Running with a forefoot strike pattern and in minimal shoes is a topic of recent interest, yet evidence is currently limited regarding the combined influence of foot strike and footwear on Achilles tendon loading. PURPOSE: To investigate the influence of both foot strike and footwear on Achilles tendon loading in habitual rearfoot strike runners. STUDY DESIGN: Controlled laboratory study...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28417667/immediate-and-short-term-biomechanical-adaptation-of-habitual-barefoot-runners-who-start-shod-running
#8
Ivan P H Au, Fannie O Y Lau, Winko W An, Janet H Zhang, Tony L Chen, Roy T H Cheung
This study investigated the immediate and short-term effects of minimalist shoes (MS) and traditional running shoes (TRS) on vertical loading rates, foot strike pattern and lower limb kinematics in a group of habitual barefoot runners. Twelve habitual barefoot runners were randomly given a pair of MS or TRS and were asked to run with the prescribed shoes for 1 month. Outcome variables were obtained before, immediate after and 1 month after shoe prescription. Average and instantaneous vertical loading rates at the 1-month follow-up were significantly higher than that at the pre-shod session (P < 0...
April 18, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28394676/communication-of-contrast-in-the-flexor-hallucis-longus-tendon-with-other-pedal-tendons-at-the-master-knot-of-henry
#9
Sayed Ali, Nicole L Griffin, Whitney Ellis, Andrew J Meyr
It is important to have a full appreciation of lower-extremity anatomical relationships before undertaking diabetic foot surgery. We sought to evaluate the potential for communication of the flexor hallucis longus (FHL) tendon with other pedal tendons and plantar foot compartments at the master knot of Henry and to provide cadaveric images and computed tomographic (CT) scans of such communications. Computed tomography and subsequent anatomical dissection were performed on embalmed cadaveric limbs. Initially, 5 to 10 mL (1:4 dilution) of iohexol and normal saline was injected into the FHL sheath as it coursed between the two hallux sesamoids...
March 2017: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/28390293/comparison-of-foot-muscle-morphology-and-foot-kinematics-between-recreational-runners-with-normal-feet-and-with-asymptomatic-over-pronated-feet
#10
Xianyi Zhang, Jeroen Aeles, Benedicte Vanwanseele
Over-pronated feet are common in adults and are associated with lower limb injuries. Studying the foot muscle morphology and foot kinematic patterns is important for understanding the mechanism of over-pronation related injuries. The aim of this study is to compare the foot muscle morphology and foot inter-segmental kinematics between recreational runners with normal feet and those with asymptomatic over-pronated feet. A total of 26 recreational runners (17 had normal feet and 9 had over-pronated feet) participated in this study and their foot type was assessed using the 6-item Foot Posture Index...
March 31, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28345173/increasing-preferred-step-rate-during-running-reduces-plantar-pressures
#11
James M Gerrard, Daniel R Bonanno
Increasing preferred step rate during running is a commonly used strategy in the management of running-related injuries. This study investigated the effect of different step rates on plantar pressures during running. Thirty-two healthy runners ran at a comfortable speed on a treadmill at five step rates (preferred, ±5%, and ±10%). For each step rate, plantar pressure data were collected using the pedar-X in-shoe system. Compared to running with a preferred step rate, a 10% increase in step rate significantly reduced peak pressure (144...
March 27, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28272012/accuracy-of-the-ankle-brachial-index-in-the-assessment-of-arterial-perfusion-of-heel-pressure-injuries
#12
Amanda Crowell, Andrew J Meyr
BACKGROUND: The evaluation and treatment of heel pressure injuries are a significant and expensive sequela of the aging population. Although the workup of patients with lower extremity tissue loss usually involves an assessment of the arterial blood flow by means of noninvasive vascular testing, the results may be misleading in patients with heel pressure injuries when the ankle-brachial index (ABI) does not provide direct information about perfusion of the rearfoot. The objective of this retrospective, observational investigation was to determine if noninvasive vascular testing provides accurate and reliable results in patients with heel pressure injuries...
February 2017: Wounds: a Compendium of Clinical Research and Practice
https://www.readbyqxmd.com/read/28262467/quantitative-assessment-of-peroneal-artery-pressure-at-the-ankle-with-noninvasive-vascular-testing
#13
Whitney Ellis-McConnell, Amanda Taylor, Patrick Kelly, Andrew J Meyr
Although the foot and ankle derives its arterial supply from a combination of the anterior tibial artery (ATA), posterior tibial artery (PTA), and peroneal artery (PA), the focus of clinical examination techniques and noninvasive vascular testing is primarily on the ATA and PTA and not on the PA. The objectives of the present investigation were to evaluate the feasibility of incorporating an assessment of the PA into a noninvasive vascular testing protocol and to collect normative data of pressure measurements of the PA at the ankle...
March 2, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28257426/effects-of-different-medial-arch-support-heights-on-rearfoot-kinematics
#14
Gunnar Wahmkow, Michael Cassel, Frank Mayer, Heiner Baur
BACKGROUND: Foot orthoses are usually assumed to be effective by optimizing mechanically dynamic rearfoot configuration. However, the effect from a foot orthosis on kinematics that has been demonstrated scientifically has only been marginal. The aim of this study was to examine the effect of different heights in medial arch-supported foot orthoses on rear foot motion during gait. METHODS: Nineteen asymptomatic runners (36±11years, 180±5cm, 79±10kg; 41±22km/week) participated in the study...
2017: PloS One
https://www.readbyqxmd.com/read/28242379/plantar-fascia-segmentation-and-thickness-estimation-in-ultrasound-images
#15
Abdelhafid Boussouar, Farid Meziane, Gillian Crofts
Ultrasound (US) imaging offers significant potential in diagnosis of plantar fascia (PF) injury and monitoring treatment. In particular US imaging has been shown to be reliable in foot and ankle assessment and offers a real-time effective imaging technique that is able to reliably confirm structural changes, such as thickening, and identify changes in the internal echo structure associated with diseased or damaged tissue. Despite the advantages of US imaging, images are difficult to interpret during medical assessment...
March 2017: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
https://www.readbyqxmd.com/read/28157573/foot-segmental-mobility-during-subphases-of-running-comparative-study-between-two-striking-patterns
#16
Helen Peters, Kevin Deschamps, Giovanni Arnoldo Matricali, Filip Staes
OBJECTIVES: The literature lacks comparative data regarding foot segmental mobility in rearfoot (RFS) and midfoot striking (MFS) patterns. The aim of the study is to quantify the foot segmental mobility during distinct subphases of stance in presence of both striking patterns. METHODS: Twelve participants were instructed to run barefoot at a constant speed of 3.3m/s on a 10-m walkway, while adopting a RFS and a MFS pattern. Multi-segment foot mobility during the impact phase, the absorption phase and the generation phase was subsequently calculated and compared between both conditions...
January 16, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28149661/biomechanical-podiatric-evaluation-in-an-italian-cohort-of-patients-with-systemic-sclerosis-a-pilot-study
#17
Susanna Maddali Bongi, Giovanni Ravenni, Benedetta Ciampi, Angela Del Rosso, Khadija El Aoufy
OBJECTIVE: Foot problems are often present in Systemic Sclerosis (SSc) patients, however studies regarding podiatric problems related to SSc are lacking and there are no data evaluating the foot biomechanical changes. The aim of the present pilot study was to evaluate podiatric problems in an Italian cohort of SSc patients by assessing received podiatric services, foot pain and disability and biomechanical foot deformity. MATERIAL AND METHODS: 25 consecutive SSc patients were enrolled from the Division of Rheumatology, University of Florence...
December 2016: European Journal of Rheumatology
https://www.readbyqxmd.com/read/28129518/body-mass-and-weekly-training-distance-influence-the-pain-and-injuries-experienced-by-runners-using-minimalist-shoes-a-randomized-controlled-trial
#18
Joel T Fuller, Dominic Thewlis, Jonathan D Buckley, Nicholas A T Brown, Joseph Hamill, Margarita D Tsiros
BACKGROUND: Minimalist shoes have been popularized as a safe alternative to conventional running shoes. However, a paucity of research is available investigating the longer-term safety of minimalist shoes. PURPOSE: To compare running-related pain and injury between minimalist and conventional shoes in trained runners and to investigate interactions between shoe type, body mass, and weekly training distance. STUDY DESIGN: Randomized clinical trial; Level of evidence, 2...
April 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28095359/gait-deviations-associated-with-plantar-heel-pain-a-systematic-review
#19
REVIEW
Adam Phillips, Shane McClinton
BACKGROUND: Plantar heel pain is a common foot disorder associated with significant pain and gait-related disability. The aim of this systematic review was to identify gait deviations associated with plantar heel pain. METHODS: A systematic review of articles with quantitative gait variables in individuals with plantar heel pain was conducted using the CINAHL, MEDLINE, Scopus, and Embase databases. Methodological quality was assessed using the modified Downs and Black criteria and used along with the number of studies per gait variable to determine level of evidence...
February 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28063387/effects-of-chronic-ankle-instability-on-kinetics-kinematics-and-muscle-activity-during-walking-and-running-a-systematic-review
#20
REVIEW
Gabriel Moisan, Martin Descarreaux, Vincent Cantin
The aim of this study is to systematically review and appraise studies assessing the effects of chronic ankle instability (CAI) on kinetics, kinematics and muscle activity during walking and running. The primary search was conducted in PubMed, Embase, CINAHL, AMED and SPORTDiscus. Only studies that compared participants with CAI with healthy participants and assessed kinetics, kinematics or muscle activity during walking or running were included. The risk of bias assessment was conducted using a modified version of the Quality Index checklist...
February 2017: Gait & Posture
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