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foot biomechanics

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https://www.readbyqxmd.com/read/29031139/biomechanics-of-the-infant-foot-during-the-transition-to-independent-walking-a-narrative-review
#1
REVIEW
Carina Price, Stewart C Morrison, Farina Hashmi, Jill Phethean, Christopher Nester
Recognising structural and functional development of the paediatric foot is fundamental to ensuring a strong theoretical framework for health professionals and scientists. The transition of an infant from sitting to walking takes approximately 9 months and is when the structures and function of the foot must respond to the challenges of bearing load; becoming increasingly more essential for locomotion. Literature pertaining to the phase of development was searched. A narrative approach synthesised the information from papers written in English, with non-symptomatic infant participants up to the development stage of independent walking or two years of age...
September 6, 2017: Gait & Posture
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
#2
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/28985577/characteristics-of-clinical-measurements-between-biomechanical-responders-and-non-responders-to-a-shoe-designed-for-knee-osteoarthritis
#3
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/28979585/posterior-tibial-tendon-dysfunction-an-overview
#4
Samuel Ka-Kin Ling, Tun Hing Lui
BACKGROUND: Adult acquired flatfoot deformity is a commonly seen condition with a large clinical spectrum. It ranges from asymptomatic subjects to severely disabled arthritic patients. Posterior tibialis tendon dysfunction is a common cause of adult acquired flatfoot deformity. METHODS: This article systematically reviews the published literature from books and journals that were either originally written or later translated into the English language regarding the subject of posterior tibialis tendon dysfunction...
2017: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/28968146/changes-in-youth-baseball-pitching-biomechanics-a-7-year-longitudinal-study
#5
Glenn S Fleisig, Alek Z Diffendaffer, Brett Ivey, Kyle T Aune, Tony Laughlin, Dave Fortenbaugh, Becky Bolt, Wendy Lucas, Kevin D Moore, Jeffrey R Dugas
BACKGROUND: Pitching biomechanics are associated with performance and risk of injury in baseball. Previous studies have identified biomechanical differences between youth and adult pitchers but have not investigated changes within individual young pitchers as they mature. HYPOTHESIS: Pitching kinematics and kinetics will change significantly during a youth pitcher's career. STUDY DESIGN: Descriptive laboratory study. METHODS: Pitching biomechanics were captured in an indoor laboratory with a 12-camera, 240-Hz motion analysis system for 51 youth pitchers who were in their first season of organized baseball with pitching...
September 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28968139/biomechanical-comparisons-among-fastball-slider-curveball-and-changeup-pitch-types-and-between-balls-and-strikes-in-professional-baseball-pitchers
#6
Rafael F Escamilla, Glenn S Fleisig, Dave Groeschner, Ken Akizuki
BACKGROUND: In professional baseball pitchers, pitching biomechanics have not been examined for the slider, and the only known study for the curveball and changeup examined limited kinetics. Moreover, no known studies have investigated pitching biomechanics between strikes and balls. Purpose/Hypothesis: The purpose was to compare pitching biomechanics in professional baseball pitchers among the fastball, slider, curveball, and changeup and between balls and strikes. It was hypothesized that pitching kinematics and kinetics would be similar among the slider, fastball, and curveball; shoulder and elbow forces and torques would be significantly lower in the changeup; and pitching biomechanics would be similar between balls and strikes...
September 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28964719/relationship-of-planter-pressure-and-glycemic-control-in-type-2-diabetic-patients-with-and-without-neuropathy
#7
Mohammed R Halawa, Yara M Eid, Rana A El-Hilaly, Mona M Abdelsalam, Amr H Amer
INTRODUCTION: Foot disease is a common complication of type 2 diabetes that can have tragic consequences. Abnormal plantar pressures are considered to play a major role in the pathologies of neuropathic ulcers in the diabetic foot. AIM: To examine Relationship of Planter Pressure and Glycemic Control in Type 2 Diabetic Patients with and without Neuropathy. MATERIALS AND METHODS: The study was conducted on 50 type 2 diabetic patients and 30 healthy volunteers...
September 23, 2017: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/28953186/a-novel-mobility-device-to-improve-walking-for-a-child-with-cerebral-palsy
#8
Andrea Fergus
PURPOSE: To describe the use and outcomes associated with the Upsee in conjunction with Kinesiotape for a child with cerebral palsy. DESCRIPTIONS: The Upsee and Kinesiotaping were implemented for 24 weeks with a 31-month-old child with cerebral palsy, Gross Motor Function Classification System level III. OUTCOMES: She progressed from walking with maximal assistance and extensive gait deviations to walking with supervision with a walker on level surfaces with improved gait...
October 2017: Pediatric Physical Therapy
https://www.readbyqxmd.com/read/28953178/effects-of-a-program-for-improving-biomechanical-characteristics-during-walking-and-running-in-children-who-are-obese
#9
Nili Steinberg, Meron Rubinstein, Dan Nemet, Moshe Ayalon, Aviva Zeev, Michal Pantanowitz, Tamar Brosh, Alon Eliakim
PURPOSE: To investigate the influence of a weight-reduction program with locomotion-emphasis on improving biomechanical characteristics of children who are obese (OW). METHODS: Ten children who are OW participated in a 6-month multidisciplinary childhood obesity management program (GRP1); another 10 children who are OW participated in the same multidisciplinary childhood obesity management program with additional locomotion-emphasis exercises for improving biomechanical characteristics (GRP2); and 10 control children who are OW with no intervention program...
October 2017: Pediatric Physical Therapy
https://www.readbyqxmd.com/read/28952799/biomechanical-consequences-of-subtalar-joint-arthroereisis-in-treating-posterior-tibial-tendon-dysfunction-a-theoretical-analysis-using-finite-element-analysis
#10
Duo Wai-Chi Wong, Yan Wang, Tony Lin-Wei Chen, Aaron Kam-Lun Leung, Ming Zhang
Subtalar joint arthroereisis (SJA) has been introduced to control the hyperpronation in cases of flatfoot. The objective of this study is to evaluate the biomechanical consequence of SJA to restore the internal stress and load transfer to the intact state from the attenuated biomechanical condition induced by posterior tibial tendon dysfunction (PTTD). A three-dimensional finite element model of the foot and ankle complex was constructed based on clinical images of a healthy female (age 28 years, height 165 cm, body mass 54 kg)...
September 27, 2017: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/28947176/gait-kinetics-kinematics-spatiotemporal-and-foot-plantar-pressure-alteration-in-response-to-long-distance-running-systematic-review
#11
Hyun Kyung Kim, Seyed Ali Mirjalili, Justin Fernandez
The aim of this systematic review was to obtain an improved insight of the present state of knowledge regarding the effect of long-distance running on gait kinetics, kinematics, spatiotemporal and foot plantar pressure. Electronic databases were searched for articles relating to biomechanical modification following long-distance running, published in English between 1990 and 2016. All the studies presenting gait parameters before and after long-distance running were included. A modified Quality Index was used for assessing methodological quality...
September 22, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28942488/psychological-and-biomechanical-aspects-of-patient-adaptation-to-diabetic-neuropathy-and-foot-ulceration
#12
REVIEW
Loretta Vileikyte, Ryan T Crews, Neil D Reeves
PURPOSE OF REVIEW: The purpose of this review was to elucidate how psychological and biomechanical factors interrelate in shaping patients' experience with diabetic symmetric polyneuropathy (DSPN) and its sequela-diabetic foot ulceration (DFU). RECENT FINDINGS: Recent findings emphasize the importance not only of neuropathic pain but also of other DSPN symptoms, such as unsteadiness. We highlight the negative spiral between unsteadiness, falls, and psychological distress...
September 23, 2017: Current Diabetes Reports
https://www.readbyqxmd.com/read/28942422/the-interaction-of-hip-and-foot-biomechanics-in-the-presentation-and-management-of-patellofemoral-pain
#13
Simon Lack
No abstract text is available yet for this article.
September 23, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28937802/epidemiology-of-stress-fractures-in-collegiate-student-athletes-2004-2005-through-2013-2014-academic-years
#14
Katherine H Rizzone, Kathryn E Ackerman, Karen G Roos, Thomas P Dompier, Zachary Y Kerr
CONTEXT:   Stress fractures are injuries caused by cumulative, repetitive stress that leads to abnormal bone remodeling. Specific populations, including female athletes and endurance athletes, are at higher risk than the general athletic population. Whereas more than 460 000 individuals participate in collegiate athletics in the United States, no large study has been conducted to determine the incidence of stress fractures in collegiate athletes. OBJECTIVE:   To assess the incidence of stress fractures in National Collegiate Athletic Association (NCAA) athletes and investigate rates and patterns overall and by sport...
September 22, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28929927/ankle-taping-can-reduce-external-ankle-joint-moments-during-drop-landings-on-a-tilted-surface
#15
Nahoko Sato, Hiroyuki Nunome, Luke S Hopper, Yasuo Ikegami
Ankle taping is commonly used to prevent ankle sprains. However, kinematic assessments investigating the biomechanical effects of ankle taping have provided inconclusive results. This study aimed to determine the effect of ankle taping on the external ankle joint moments during a drop landing on a tilted surface at 25°. Twenty-five participants performed landings on a tilted force platform that caused ankle inversion with and without ankle taping. Landing kinematics were captured using a motion capture system...
September 20, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28926327/long-term-outcomes-of-the-calcaneo-stop-procedure-in-the-treatment-of-flexible-flatfoot-in-children-a-retrospective-study
#16
Francisca Pinho Costa, Gilberto Costa, Manuel Santos Carvalho, António Mendes Moura, Rui Pinto, João Torres
INTRODUCTION: Flexible flatfoot is common amongst children, although treatment is rarely indicated. The calcaneo-stop procedure has been reported to be effective in short-term studies. We aim to evaluate the long-term outcomes of the calcaneo-stop procedure in the treatment of flexible flatfoot in children. MATERIAL AND METHODS: Twenty-six calcaneo-stop procedures performed between 1995 and 2006 on 13 patients were evaluated clinically and using photopodoscopy, and the FAOS questionnaire was applied for both feet...
August 31, 2017: Acta Médica Portuguesa
https://www.readbyqxmd.com/read/28915105/variations-of-ankle-foot-orthosis-constrained-movements-increase-ankle-range-of-movement-while-maintaining-power-output-of-recumbent-cycling
#17
Puteri N F Hamdan, Nur Azah Hamzaid, Juliana Usman, Md Anamul Islam, Victor S P Kean, Ahmad K Abdul Wahab, Nazirah Hasnan, Glen M Davis
Previous research investigated recumbent cycle power output (PO) from the perspective of knee and hip joint biomechanics. However, ankle-foot biomechanics and, in particular, the effect of ankle-foot orthosis (AFO)-constrained movements on cycle PO has not been widely explored. Therefore, the purpose of this study was to determine whether AFOs of a fixed position (FP) and in dorsi-plantarflexion (DPF)-, dorsiflexion (DF)- and plantarflexion (PF)-constrained movements might influence PO during voluntary recumbent cycling exercises...
September 15, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28900562/a-biomechanical-comparison-among-three-kinds-of-rebound-type-jumps-in-female-collegiate-athletes
#18
Miki Nariai, Naruto Yoshida, Atsushi Imai, Kazumichi Ae, Ryo Ogaki, Hirokazu Suhara, Hitoshi Shiraki
BACKGROUND: Single-legged drop jumps (SDJ), single-legged repetitive jumps (SRJ), and single-legged side hops (SSH) are often used as plyometric training and functional performance tests. Differences in the kinetics and kinematic characteristics of lower extremity joints during these jumps are unclear. HYPOTHESIS/PURPOSE: The purpose of this study was to investigate the joint motion and mechanical work of the takeoff leg from foot contact to foot-off during SDJ, SRJ, and SSH in the sagittal and frontal planes in female athletes...
August 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28895759/validation-of-plantar-pressure-simulations-using-finite-and-discrete-element-modelling-in-healthy-and-diabetic-subjects
#19
W Aerts, A Scarton, F De Groote, A Guiotto, Z Sawacha, C Cobelli, J Vander Sloten, I Jonkers
Plantar pressure simulation driven by integrated 3D motion capture data, using both a finite element and a discrete element model, is compared for ten healthy and ten diabetic neuropathic subjects. The simulated peak pressure deviated on average between 16.7 and 34.2% from the measured peak pressure. The error in the position of the peak pressure was on average smaller than 4.2 cm. No method was more accurate than the other although statistical differences were found between them. Both techniques are thus complementary and useful tools to better understand the alteration of diabetic foot biomechanics during gait...
September 12, 2017: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/28890257/effects-of-pdgf-bb-delivery-from-heparinized-collagen-sutures-on-the-healing-of-lacerated-chicken-flexor-tendon-in-vivo
#20
Mousa Younesi, Derrick M Knapik, Jameson Cumsky, Baris Ozgur Donmez, Ping He, Anowarul Islam, Greg Learn, Philip McClellan, Michael Bohl, Robert J Gillespie, Ozan Akkus
Flexor tendon lacerations are traditionally repaired by using non-absorbable monofilament sutures. Recent investigations have explored to improve the healing process by growth factor delivery from the sutures. However, it is difficult to conjugate growth factors to nylon or other synthetic sutures. This study explores the performance of a novel electrochemically aligned collagen suture in a flexor tendon repair model with and without platelet derived growth factor following complete tendon laceration in vivo...
September 7, 2017: Acta Biomaterialia
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