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https://www.readbyqxmd.com/read/29021906/a-pilot-biomechanical-assessment-of-curling-deliveries-is-toe-sliding-more-likely-to-cause-knee-injury-than-flatfoot-sliding
#1
Iona Robertson, Graham P Arnold, Weijie Wang, Tim S Drew, Sadiq Nasir, Calum MacDonald, Rami J Abboud
BACKGROUND: The aim of this study was to determine whether toe sliding is more likely to cause knee injuries than flatfoot sliding in curling. METHODS: Twelve curlers participated in the study, each delivering 12 stones. Six stones per volunteer were delivered using a flatfoot slide and six were delivered using a toe slide. The Pedar-X in-shoe pressure system recorded the plantar pressure during each of the slides, while a sagittal plane digital video recorded the body position of the curler...
2017: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/29020659/3d-gait-analysis-with-and-without-an-orthopedic-walking-boot
#2
H Gulgin, K Hall, A Luzadre, E Kayfish
INTRODUCTION: Orthopedic walking boots have been widely used in place of traditional fiberglass casts for a variety of orthopedic injuries and post-surgical interventions. These walking boots create a leg length discrepancy (LLD). LLD has been shown to alter the kinematics and kinetics of gait and are associated with lumbar and lower limb conditions such as: foot over pronation, low back pain, scoliosis, and osteoarthritis of the hip and knee joints. Past gait analyses research with orthopedic boots is limited to findings on the ipsilateral limb...
October 5, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29020108/influence-of-sports-flooring-and-shoes-on-impact-forces-and-performance-during-jump-tasks
#3
Laurent Malisoux, Paul Gette, Axel Urhausen, Joao Bomfim, Daniel Theisen
We aim to determine the influence of sports floorings and sports shoes on impact mechanics and performance during standardised jump tasks. Twenty-one male volunteers performed ankle jumps (four consecutive maximal bounds with very dynamic ankle movements) and multi-jumps (two consecutive maximal counter-movement jumps) on force plates using minimalist and cushioned shoes under 5 sports flooring (SF) conditions. The shock absorption properties of the SF, defined as the proportion of peak impact force absorbed by the tested flooring when compared with a concrete hard surface, were: SF0 = 0% (no flooring), SF1 = 19%, SF2 = 26%, SF3 = 37% and SF4 = 45%...
2017: PloS One
https://www.readbyqxmd.com/read/29020012/wearable-sensors-objectively-measure-gait-parameters-in-parkinson-s-disease
#4
Johannes C M Schlachetzki, Jens Barth, Franz Marxreiter, Julia Gossler, Zacharias Kohl, Samuel Reinfelder, Heiko Gassner, Kamiar Aminian, Bjoern M Eskofier, Jürgen Winkler, Jochen Klucken
Distinct gait characteristics like short steps and shuffling gait are prototypical signs commonly observed in Parkinson's disease. Routinely assessed by observation through clinicians, gait is rated as part of categorical clinical scores. There is an increasing need to provide quantitative measurements of gait, e.g. to provide detailed information about disease progression. Recently, we developed a wearable sensor-based gait analysis system as diagnostic tool that objectively assesses gait parameter in Parkinson's disease without the need of having a specialized gait laboratory...
2017: PloS One
https://www.readbyqxmd.com/read/29016477/shod-versus-barefoot-effects-on-force-and-power-development-during-a-conventional-deadlift
#5
Mark E Hammer, Rudi A Meir, John W Whitting, Zachary J Crowley-McHattan
The kinetics of a conventional deadlift in shod (S) versus unshod (US) footwear conditions in 10 male participants (mean ± SD, age = 27.0 ± 5.8 years; weight = 78.7 ± 11.5 kg; height = 175.8 ± 8.2 cm; 1RM deadlift = 155.8 ± 25.8 kg) was assessed in two testing sessions. A counterbalanced, crossover experimental design was used with different loads (60% and 80% 1RM). Four sets of four repetitions were prescribed per session with two sets per shoe and with each shoe condition involving one set per load. Peak vertical force (PF), rate of force development (RFD), time to peak force (TPF), anterior-posterior (COP-AP) and medio-lateral (COP-ML) center of pressure excursion, and barbell peak power (PP) data were recorded during all repetitions...
October 7, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28994758/using-gold-standard-gait-analysis-methods-to-assess-experience-effects-on-lower-limb-mechanics-during-moderate-high-heeled-jogging-and-running
#6
Yan Zhang, Meizi Wang, Jan Awrejcewicz, Gusztáv Fekete, Feng Ren, Yaodong Gu
A limited number of studies have explored lower-limb biomechanics during high-heeled jogging and running, and most studies have failed to clarify the wearing experience of subjects. This protocol describes the differences in lower-limb kinematics and ground reaction force (GRF) between experienced wearers (EW) and inexperienced wearers (IEW) during moderate high-heeled jogging and running. A three-dimensional (3D) motion analysis system with a configured force platform was used to synchronously capture lower-limb joint movements and GRF...
September 14, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28993130/gait-retraining-versus-foot-orthoses-for-patellofemoral-pain-a-pilot-randomised-clinical-trial
#7
Jason Bonacci, Michelle Hall, Natalie Saunders, Bill Vicenzino
OBJECTIVES: To determine the feasibility of a clinical trial that compares a 6-week, physiotherapist-guided gait retraining program with a foot orthoses intervention in runners with patellofemoral pain. DESIGN: Pilot randomised controlled trial. METHODS: Runners aged 18-40 years with clinically diagnosed patellofemoral pain were randomly allocated to either a 6-week gait retraining intervention of increasing cadence and use of a minimalist shoe or prefabricated foot orthoses...
October 2, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28989784/glyph-guessing-for-oo-and-ee-spatial-frequency-information-in-sound-symbolic-matching-for-ancient-and-unfamiliar-scripts
#8
Nora Turoman, Suzy J Styles
In three experiments, we asked whether diverse scripts contain interpretable information about the speech sounds they represent. When presented with a pair of unfamiliar letters, adult readers correctly guess which is /i/ (the 'ee' sound in 'feet'), and which is /u/ (the 'oo' sound in 'shoe') at rates higher than expected by chance, as shown in a large sample of Singaporean university students (Experiment 1) and replicated in a larger sample of international Internet users (Experiment 2). To uncover what properties of the letters contribute to different scripts' 'guessability,' we analysed the visual spatial frequencies in each letter (Experiment 3)...
September 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28987767/effects-of-high-heeled-footwear-on-static-and-dynamic-pelvis-position-and-lumbar-lordosis-in-experienced-younger-and-middle-aged-women
#9
Jan Schroeder, Karsten Hollander
There is still conflicting evidence about the effect of high-heeled footwear on posture, especially if methodological confounders are taken into account. The purpose of this study was to investigate the effect of high-heeled footwear on lumbopelvic parameters in experienced younger and middle-aged women while standing and walking. Thirty-seven experienced younger (n=19:18-25 years) and middle-aged (n=18:26-56 years) women were included in this randomized crossover study. Using a non-invasive back shape reconstruction device (rasterstereography), static (pelvic tilt and lumbar lordosis angle) and dynamic (pelvic rotation, median lumbar lordosis angle and range of motion) parameters representing pelvis position and lumbar curvature were measured...
September 28, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28987128/walking-a-mile-in-their-shoes-reflections-on-being-an-international-medical-graduate
#10
Jennifer A May
No abstract text is available yet for this article.
August 4, 2017: Medical Journal of Australia
https://www.readbyqxmd.com/read/28985577/characteristics-of-clinical-measurements-between-biomechanical-responders-and-non-responders-to-a-shoe-designed-for-knee-osteoarthritis
#11
Yongwook Kim, Jim Richards, Roy H Lidtke, Renato Trede
PURPOSE: The purpose of this study was to investigate the characteristics of biomechanical and clinical measurements in relation to the knee adduction moment when wearing a standard shoe and a shoe design for individuals with knee osteoarthritis (Flex-OA). METHODS: Kinematic and kinetic data were collected from thirty-two healthy individuals (64 knees) using a ten camera motion analysis system and four force plates. Subjects performed 5 walking trials under the two conditions and the magnitude of individuals' biomechanical responses where explored in relation to the clinical assessment of the Foot Posture Index, hip rotation range, strength of hip rotators, and active ankle-foot motion, all of which have been described as possible compensation mechanisms in knee osteoarthritis...
September 29, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28985487/lower-extremity-dynamics-of-walking-in-neuropathic-diabetic-patients-who-wear-a-forefoot-offloading-shoe
#12
Sicco A Bus, Josina C Maas, Nicoline M Otterman
BACKGROUND: A forefoot-offloading shoes has a negative-heel rocker outsole and is used to treat diabetic plantar forefoot ulcers, but its mechanisms of action and their association with offloading and gait stability are not sufficiently clear. METHODS: Ten neuropathic diabetic patients were tested in a forefoot-offloading shoe and subsequently in a control shoe with no specific offloading construction, both worn on the right foot (control shoe on left), while walking at 1...
October 2, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28980032/-rupture-of-the-tendon-of-the-tibialis-anterior-muscle-etiology-clinical-symptoms-and-treatment
#13
REVIEW
H Waizy, B Bouillon, C Stukenborg-Colsman, D Yao, S Ettinger, L Claassen, C Plaass, K Danniilidis, D Arbab
Ruptures of the tendon of the tibialis anterior muscle tend to occur in the context of degenerative impairments. This mainly affects the distal avascular portion of the tendon. Owing to the good compensation through the extensor hallucis longus and extensor digitorum muscles, diagnosis is often delayed. In addition to the clinical examination, magnetic resonance inaging (MRI) diagnostics are of particular importance, although damage or rupture of the tendon can also be demonstrated sonographically. Therapeutic measures include conservative or operative measures, depending on the clinical symptoms...
October 4, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28979586/percutaneous-first-metatarsophalangeal-joint-fusion
#14
Thomas Bauer
The first metatarsophalangeal (MTP1) joint fusion is a very useful procedure in forefoot surgery and is still the gold standard for the treatment of severe and painful hallux rigidus. Normal walking and running are possible after MTP1 fusion, the first ray mobility being essentially in the interphalangeal (IP) joint with a compensatory hypermobility in dorsal flexion. Percutaneous MTP1 fusion is a simple procedure providing comparable results to fusions performed with open techniques. Postoperative cares are simplified with an immediate full weight bearing on rigid flat shoes and quick return to normal walking...
2017: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/28975803/the-evaluation-of-foot-rockers-on-the-kinematic-parameters-of-individuals-with-diabetes
#15
Mohammad Karimi
BACKGROUND: A variety of shoe modifications have been used to reduce the forces applied on the plantar surface of the foot in those with diabetes. Toe and heel rockers are 2 of the most common types used. The aim of this study is to evaluate the effect of these shoe modifications on the kinematics of both normal and diabetic individuals. METHOD: Two groups of healthy and diabetic individuals were recruited for this study. The Qualysis motion analysis system was used to record the motions of participants while walking with shoes with toe and a combination of toe and heel rockers (combined)...
October 1, 2017: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/28975491/the-epidemiology-clinical-course-and-management-of-snakebites-in-the-north-american-snakebite-registry
#16
Anne-Michelle Ruha, Kurt C Kleinschmidt, Spencer Greene, Meghan B Spyres, Jeffrey Brent, Paul Wax, Angela Padilla-Jones, Sharan Campleman
The American College of Medical Toxicology established the North American Snakebite Registry (NASBR), a national database of detailed, prospectively collected information regarding snake envenomation in the United States, in 2013. This report describes the epidemiology, clinical course, and management of snakebites in the NASBR. All cases entered into the NASBR between January 1, 2013 and December 31, 2015 were identified. Descriptive statistics are used to report results. Fourteen sites in 10 states entered 450 snakebites...
October 3, 2017: Journal of Medical Toxicology: Official Journal of the American College of Medical Toxicology
https://www.readbyqxmd.com/read/28965338/training-shoes-do-not-decrease-the-negative-work-of-the-lower-extremity-joints
#17
Satoru Hashizume, Akihiko Murai, Hiroaki Hobara, Yoshiyuki Kobayashi, Mitsunori Tada, Masaaki Mochimaru
Different types of running shoes may have different influence on the negative work of each lower extremity joint. Clarifying this influence can reduce the potential risk of muscle injury. The present study examined the difference in the negative work and associated kinetic and kinematic parameters of the lower extremity joints between training shoes and racing flats during the contact phase of running. Participants were asked to run on a runway at a speed of 3.0 m·s(-1) for both training shoes and racing flats...
October 1, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28962089/surgical-outcome-of-simplified-horse-shoe-technique-with-the-traditional-procedure-in-children-with-trigonocephaly
#18
Abdoljalil Kalantar Hormozi, Vahid Dastgerdi, Abdolazim Ghalambor
Trigonocephaly is one of the most common types of craniosynostosis leading to triangular-shaped head and neurodevelopmental complications. Several surgical techniques have been suggested for its correction, but the newly suggested technique seems to have optimal outcomes compared with the traditional methods. Thus, the authors retrospectively evaluated the outcomes of the simplified horse-shoe technique with previous procedures performed on 169 children severe trigonocephaly during 1996 to 2015 at Mofid Hospital, Tehran, Iran...
October 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28958428/identification-of-heel-strike-under-a-slippery-condition
#19
Wen-Ruey Chang, Xu Xu
Kinematics at heel strike instant (HSI) has been used to quantify slip severity. However, methods to identify HSI remain ambiguous and have not been evaluated under slippery conditions. A glass force plate was used to observe the contact interface between shoe and floor under slippery conditions. HSIs identified from the video captured beneath the force plate and from the force plate and kinematics were compared. The results showed that HSIs identified with the video were closer to those identified with the normal force threshold (NFT) (9...
January 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/28948846/the-influence-of-inertial-sensor-sampling-frequency-on-the-accuracy-of-measurement-parameters-in-rearfoot-running
#20
Christian Mitschke, Falk Zaumseil, Thomas L Milani
Increasingly, inertial sensors are being used for running analyses. The aim of this study was to systematically investigate the influence of inertial sensor sampling frequencies (SF) on the accuracy of kinematic, spatio-temporal, and kinetic parameters. We hypothesized that running analyses at lower SF result in less signal information and therefore the inability to sufficiently interpret measurement data. Twenty-one subjects participated in this study. Rearfoot strikers ran on an indoor running track at a velocity of 3...
September 26, 2017: Computer Methods in Biomechanics and Biomedical Engineering
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