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https://www.readbyqxmd.com/read/29214919/effect-of-total-contact-orthosis-on-medial-longitudinal-arch-and-lower-extremities-in-flexible-flatfoot-subjects-during-walking
#1
Tulaya Prachgosin, Wipawan Leelasamran, Pruittikorn Smithmaitrie, Surapong Chatpun
BACKGROUND: Total-contact orthosis (TCO) is one kind of foot orthosis (FO) that is used to adjust biomechanics in flexible flatfoot. OBJECTIVE: To determine the effects of a TCO on the MLA moment, MLA deformation angle and lower limb biomechanics. STUDY DESIGN: Cross-sectional study. METHODS: Seven-flatfoot and thirteen-normal foot subjects were recruited by footprint and radiographs. The biomechanics of subjects with normal foot (NF), flatfoot with shoe only (FWOT) and flatfoot with TCO (FWT) were collected in a 3D motion analysis laboratory and force plates...
December 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/29213246/the-influence-of-footwear-on-the-modular-organization-of-running
#2
Alessandro Santuz, Antonis Ekizos, Lars Janshen, Vasilios Baltzopoulos, Adamantios Arampatzis
For most of our history, we predominantly ran barefoot or in minimalist shoes. The advent of modern footwear, however, might have introduced alterations in the motor control of running. The present study investigated shod and barefoot running under the perspective of the modular organization of muscle activation, in order to help addressing the neurophysiological factors underlying human locomotion. On a treadmill, 20 young and healthy inexperienced barefoot runners ran shod and barefoot at preferred speed (2...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29205209/foot-mechanics-in-young-women-are-altered-after-walking-in-high-heeled-shoes
#3
Sławomir Winiarski, Alicja Rutkowska-Kucharska, Paweł Zostawa, Natalia Uścinowicz-Zostawa, Sebastian Klich
PURPOSE: Nowadays, fashion has caused that many young women are wearing high-heeled shoes. Therefore, the aim of this study was to examine the effects of long-term walking in high-heeled shoes on the foot mechanics during barefoot gait. METHODS: Forty-three young women (22 ± 2.1 years) divided into two groups participated in this retrospective cohort study. The first group was composed of women who frequently wear high-heeled footwear. The second, infrequent wearers group, consisted of women who preferred flat-heeled shoes...
2017: Acta of Bioengineering and Biomechanics
https://www.readbyqxmd.com/read/29202983/influence-of-tibialis-posterior-muscle-activation-on-foot-anatomy-under-axial-loading-a-biomechanical-ct-human-cadaveric-study
#4
Koen Dullaert, Jennifer E Hagen, Paul Simons, Florian Gras, Boyko Gueorguiev, R Geoff Richards, Kajetan Klos
BACKGROUND: Collapse of the medial longitudinal arch and subluxation of the subtalar joint are common occurrences in adult flatfoot deformity. Controversy exists about the role of the tibialis posterior (TP) tendon as first and/or essential lesion. Subtle changes in the foot configuration can occur under weight bearing. PURPOSE: This human cadaveric study is designed to investigate the effect that isolated actuation of the TP tendon has on the medial longitudinal arch and the hindfoot configuration under simulated weight bearing...
December 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29201146/time-to-revise-our-dialogue-how-flat-is-the-paediatric-flatfoot
#5
Stewart C Morrison, Juliet McClymont, Carina Price, Chris Nester
A recent systematic review of measures of foot development used the medial longitudinal arch profile as its primary indicator of development. A comparative analysis of existing studies was undertaken. This work confirmed changes with arch profile were age-dependent, although the age at which foot development ceased remains unknown. This work also highlighted the abundance of clinical measures used in existing research and outlined the challenges with drawing consensus from available data. There is a clear need to move this debate forward and, to do so, it is essential that scientific and clinical communities unite...
2017: Journal of Foot and Ankle Research
https://www.readbyqxmd.com/read/29189883/arthroscopic-treatment-combined-with-the-ankle-stabilization-procedure-is-effective-for-sinus-tarsi-syndrome-in-patients-with-chronic-ankle-instability
#6
Sheng-Kun Li, Yu-Jie Song, Hong Li, Baofu Wei, Ying-Hui Hua, Hong-Yun Li
PURPOSE: This study aimed to investigate the results of arthroscopic treatment combined with ankle stabilization procedure for sinus tarsi syndrome (STS) in patients with chronic ankle instability (CAI). METHODS: A total of 57 patients (31 males and 26 females, average age 29.9 ± 8.4 years ranging from 15 to 52 years) with STS and CAI who accepted operation from 2013 to 2015 were included in this retrospective study. Surgical procedures included thorough tarsal sinus debridement and repair or reconstruction of lateral ankle ligaments according to the quality of ligaments...
November 30, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29182114/assessment-of-the-medial-longitudinal-arch-in-children-with-flexible-pes-planus-by-plantar-pressure-mapping
#7
E M Elmoatasem, M A Eid
INTRODUCTION: Plantar Pressure mapping was introduced as a new modality for assessment of the height of the medial longitudinal arch of the foot. Therefore, the aim of this study is to correlate the plantar pressure mapping readings of arch index contact force ratio (AICFR) in children with flexible pes planus with radiographic measurements and static plantar footprints in order to determine the reliability of pressure mapping as a modality for the assessment and follow up of the flat foot deformity...
December 2016: Acta Orthopaedica Belgica
https://www.readbyqxmd.com/read/29175714/the-effect-of-additional-activation-of-the-plantar-intrinsic-foot-muscles-on-foot-dynamics-during-gait
#8
Kazunori Okamura, Shusaku Kanai, Masaki Hasegawa, Akira Otsuka, Sadaaki Oki
BACKGROUND: The plantar intrinsic foot muscles (PIFMs) contribute to support the medial longitudinal arch. But the functional role of the PIFMs during dynamic activities is not clear. The purpose of this study was to examine the change in the foot dynamics during gait accompanied with the change in the PIFMs activity to determine the functional role of the PIFMs during gait. METHODS: Twenty healthy male subjects were randomly assigned to the electrical stimulation group (ESG) or control group (CG)...
August 18, 2017: Foot
https://www.readbyqxmd.com/read/29153422/a-flap-based-on-the-plantar-digital-artery-arch-branch-to-improve-appearance-of-reconstructed-fingers-anatomical-and-clinical-application
#9
Lin-Feng Tang, Ji-Hui Ju, Yue-Fei Liu, Bo Lan, Rui-Xing Hou
AIM: To investigate blood supply features of the flap based on the plantar digital artery arch and arch branch artery, and the treatment of outcomes of reconstructed fingers by the plantar digital artery arch branch island flap. METHODS: Eight fresh foot specimens were employed with red emulsion infusion and microdissection. The vascular organization was observed in the second toe, such as initiation site, the course, and the number of the plantar digital artery arch branch...
November 16, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/29148136/effects-of-sensitive-electrical-stimulation-based-somatosensory-cueing-in-parkinson-s-disease-gait-and-freezing-of-gait-assessment
#10
Benoît Sijobert, Christine Azevedo, David Andreu, Claudia Verna, Christian Geny
This study aims to investigate the effect of a somatosensory cueing on gait disorders in subjects with Parkinson's disease (PD). After having performed stepping in place and timed up and go assessing tasks, 13 participants with PD were equipped with an electrical stimulator and an inertial measurement unit (IMU) located under the lateral malleolus on the sagittal plane. Electrodes were positioned under the arch of the foot and electrical stimulation (ES) parameters (five 500 µs/phase charge-balanced biphasic pulses delivered at 200 Hz, repeated four times at 10 Hz) adjusted to deliver a sensitive signal...
November 2017: Artificial Organs
https://www.readbyqxmd.com/read/29144991/finite-element-simulation-on-posterior-tibial-tendinopathy-load-transfer-alteration-and-implications-to-the-onset-of-pes-planus
#11
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/29135646/foot-structure-and-function-in-habitually-barefoot-and-shod-adolescents-in-kenya
#12
Herje Aibast, Paul Okutoyi, Timothy Sigei, Walter Adero, Danny Chemjor, Neford Ongaro, Noriyuki Fuku, Kenn Konstabel, Carol Clark, Daniel E Lieberman, Yannis Pitsiladis
Habitually barefoot (HB) children from the Kalenjin tribe of Kenya are known for their high physical activity levels. To date, there has been no comprehensive assessment of foot structure and function in these highly active and HB children/adolescents and link with overuse injuries. PURPOSE: The aim of this research is to assess foot structure, foot function, injury and physical activity levels in Kenyan children and adolescents who are HB compared with those who were habitually shod (HS)...
November 2017: Current Sports Medicine Reports
https://www.readbyqxmd.com/read/29134100/three-dimensional-innate-mobility-of-the-human-foot-bones-under-axial-loading-using-biplane-x-ray-fluoroscopy
#13
Kohta Ito, Koh Hosoda, Masahiro Shimizu, Shuhei Ikemoto, Takeo Nagura, Hiroyuki Seki, Masateru Kitashiro, Nobuaki Imanishi, Sadakazu Aiso, Masahiro Jinzaki, Naomichi Ogihara
The anatomical design of the human foot is considered to facilitate generation of bipedal walking. However, how the morphology and structure of the human foot actually contribute to generation of bipedal walking remains unclear. In the present study, we investigated the three-dimensional kinematics of the foot bones under a weight-bearing condition using cadaver specimens, to characterize the innate mobility of the human foot inherently prescribed in its morphology and structure. Five cadaver feet were axially loaded up to 588 N (60 kgf), and radiographic images were captured using a biplane X-ray fluoroscopy system...
October 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/29093757/movement-coordination-patterns-between-the-foot-joints-during-walking
#14
John B Arnold, Paolo Caravaggi, François Fraysse, Dominic Thewlis, Alberto Leardini
Background: In 3D gait analysis, kinematics of the foot joints are usually reported via isolated time histories of joint rotations and no information is provided on the relationship between rotations at different joints. The aim of this study was to identify movement coordination patterns in the foot during walking by expanding an existing vector coding technique according to an established multi-segment foot and ankle model. A graphical representation is also described to summarise the coordination patterns of joint rotations across multiple patients...
2017: Journal of Foot and Ankle Research
https://www.readbyqxmd.com/read/29077492/motor-evoked-potentials-of-the-abductor-hallucis-muscle-and-their-relationship-with-foot-arch-functional-anatomy
#15
Tyrone Mayorga, Erato Giokas, Anaida Abagyan, Dhaval Patel, Yasmin Sarraf, Michael Paula, Eileen Chusid, Anthony D'antoni, Fortunato Battaglia
BACKGROUND: The present study aimed to investigate the correlation between abductor hallucis (AH) muscle motor evoked potential (MEP) amplitude and foot arch anatomy. METHODS: Twelve healthy individuals underwent foot arch measurement using a digital photographic technique and measurements of cortical excitability using transcranial magnetic stimulation applied on the cortical representation area of the right AH muscle. Truncated foot length and dorsal height were then measured and used to create the arch height index (AHI)...
September 2017: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/29065655/the-effect-of-arch-height-and-material-hardness-of-personalized-insole-on-correction-and-tissues-of-flatfoot
#16
Shonglun Su, Zhongjun Mo, Junchao Guo, Yubo Fan
Flat foot is one of the common deformities in the youth population, seriously affecting the weight supporting and daily exercising. However, there is lacking of quantitative data relative to material selection and shape design of the personalized orthopedic insole. This study was to evaluate the biomechanical effects of material hardness and support height of personalized orthopedic insole on foot tissues, by in vivo experiment and finite element modeling. The correction of arch height increased with material hardness and support height...
2017: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/29056595/effectiveness-of-foot-orthoses-for-the-prevention-of-lower-limb-overuse-injuries-in-naval-recruits-a-randomised-controlled-trial
#17
Daniel R Bonanno, George S Murley, Shannon E Munteanu, Karl B Landorf, Hylton B Menz
OBJECTIVES: To evaluate the effectiveness of prefabricated foot orthoses for the prevention of lower limb overuse injuries in naval recruits. METHODS: This study was a participant-blinded and assessor-blinded, parallel-group randomised controlled trial. Three-hundred and six participants aged 17-50 years who undertook 11 weeks of initial defence training at the Royal Australian Navy Recruit School (Cerberus, Australia) were randomised to a control group (flat insoles, n=153) or an intervention group (contoured, prefabricated foot orthoses, n=153)...
October 22, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/29051543/cryoem-structure-of-saccharomyces-cerevisiae-u1-snrnp-offers-insight-into-alternative-splicing
#18
Xueni Li, Shiheng Liu, Jiansen Jiang, Lingdi Zhang, Sara Espinosa, Ryan C Hill, Kirk C Hansen, Z Hong Zhou, Rui Zhao
U1 snRNP plays a critical role in 5'-splice site recognition and is a frequent target of alternative splicing factors. These factors transiently associate with human U1 snRNP and are not amenable for structural studies, while their Saccharomyces cerevisiae (yeast) homologs are stable components of U1 snRNP. Here, we report the cryoEM structure of yeast U1 snRNP at 3.6 Å resolution with atomic models for ten core proteins, nearly all essential domains of its RNA, and five stably associated auxiliary proteins...
October 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/29028624/foot-pressure-pattern-hindfoot-deformities-and-their-associations-with-foot-pain-in-individuals-with-advanced-medial-knee-osteoarthritis
#19
Isao Saito, Kyoji Okada, Masahiko Wakasa, Hidekazu Abe, Akira Saito
This survey clarified foot pressure patterns and hindfoot deformities in individuals with advanced knee osteoarthritis (OA) and analyzed their associations with foot pain. Sixty-four individuals with unilateral knee OA who underwent total knee arthroplasty (TKA) were divided into the following groups: no foot pain (n=26; men:women, 4:22; mean age, 73.7 years), foot pain resolved after TKA (12; 2:10; 75.8), and foot pain remaining after TKA (26; 4:22; 74.7). Elderly individuals without pain or deformity in either knee (54; 10:44; 74...
January 2018: Gait & Posture
https://www.readbyqxmd.com/read/28969275/the-relation-between-dermatoglyphics-and-mesiodistal-width-of-the-deciduous-second-molar-and-permanent-first-molar
#20
Naveen Kumar Ramagoni, Vinod Kumar, Hamsini Adusumilli, Km Parveen Reddy, Nh Praveen Kumar
INTRODUCTION: Dermatoglyphics is one of the important diagnostic tools used in the recent days for identification of an individual. Dermatoglyphics is the study of type of patterns present on digits, palms and foot. The mesiodistal diameter of the tooth is an important factor which reveals the tooth-bone discrepancy. Deciduous second molar and permanent first molar exhibit least degree of variation. Both the dermal ridges and the enamel layer of the tooth originate from ectodermal layer and during the same period of intrauterine life...
August 2017: Journal of Clinical and Diagnostic Research: JCDR
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