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https://www.readbyqxmd.com/read/29931378/-components-of-the-joint-sparing-combined-bony-and-soft-tissue-correction-of-the-cavovarus-foot
#1
REVIEW
A Wallroth, T Dreher
OBJECTIVE: Combined bony and soft tissue correction of a mild foot and flexible rearfoot deformity in cavovarus foot. INDICATIONS: Drop foot during swing phase and muscular imbalance in the stance phase in cavovarus foot, flexible cavovarus foot, accompanying symptoms such as recurrent calluses and ulcerations, compliance. CONTRAINDICATIONS: Pes cavovarus of spastic genesis, mild deformities, fixed bony deformity, lack of compliance, florid inflammation in the foot area, severe peripheral artery disease (PAD), diabetes mellitus...
June 21, 2018: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/29909229/functional-evaluation-of-bilateral-subtalar-arthroereisis-for-the-correction-of-flexible-flatfoot-in-children-1-year-follow-up
#2
Paolo Caravaggi, Giada Lullini, Lisa Berti, Sandro Giannini, Alberto Leardini
BACKGROUND: Flexible flatfoot (FFF) is a common alteration of the foot diagnosed in the pediatric population causing pain and decreased quality of life. Surgical treatment via arthroereisis of the subtalar joint can be recommended when non-invasive options do not result in sufficient pain relief. While clinical outcome of subtalar joint arthroereisis is generally positive, no functional evaluation has thus far been reported following surgery. RESEARCH QUESTION: The aim of this study was to assess the effects of two arthroereisis implants for the correction of bilateral FFF on foot and lower limb biomechanics during gait...
June 11, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29906659/validation-of-an-inertial-measurement-unit-for-the-quantification-of-rearfoot-kinematics-during-running
#3
Daniel Koska, Jasmin Gaudel, Tobias Hein, Christian Maiwald
BACKGROUND: The popular protocol used to study running motion suffers from problems that lead to a limited ability to generalize the obtained results. Inertial measurement units (IMU) appear to be promising in increasing ecological validity of the collected data. However, quantifying running kinematics utilizing IMU signals is complex and potentially affected by several well-established and less well-known errors. RESEARCH QUESTION: The purpose of this study was to examine the validity of kinematic variables obtained from a single, shoe-mounted IMU using an opto-electronic motion analysis reference system...
June 9, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29900183/influence-of-maximal-running-shoes-on-biomechanics-before-and-after-a-5k-run
#4
Christine D Pollard, Justin A Ter Har, J J Hannigan, Marc F Norcross
Background: Lower extremity injuries are common among runners. Recent trends in footwear have included minimal and maximal running shoe types. Maximal running shoes are unique because they provide the runner with a highly cushioned midsole in both the rearfoot and forefoot. However, little is known about how maximal shoes influence running biomechanics. Purpose: To examine the influence of maximal running shoes on biomechanics before and after a 5-km (5K) run as compared with neutral running shoes...
June 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29895679/short-and-long-term-effects-of-altered-point-of-ground-reaction-force-application-on-human-running-energetics
#5
Antonis Ekizos, Alessandro Santuz, Adamantios Arampatzis
The current study investigates an acute and a gradual transition of the point of force application (PFA) from the rearfoot towards the fore of the foot during running, on the rate of metabolic energy consumption. The participants were randomly assigned in two experimental and one control groups: a short-term intervention group (STI, N=17; two training sessions), a long-term intervention group (LTI, N=10; 14-week gradual transition) and a control group (CG, N=11). Data were collected at two running velocities (2...
June 12, 2018: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29866518/acute-changes-in-foot-strike-pattern-and-cadence-affect-running-parameters-associated-with-tibial-stress-fractures
#6
Jennifer R Yong, Amy Silder, Kate L Montgomery, Michael Fredericson, Scott L Delp
Tibial stress fractures are a common and debilitating injury that occur in distance runners. Runners may be able to decrease tibial stress fracture risk by adopting a running pattern that reduces biomechanical parameters associated with a history of tibial stress fracture. The purpose of this study was to test the hypothesis that converting to a forefoot striking pattern or increasing cadence without focusing on changing foot strike type would reduce injury risk parameters in recreational runners. Running kinematics, ground reaction forces and tibial accelerations were recorded from seventeen healthy, habitual rearfoot striking runners while running in their natural running pattern and after two acute retraining conditions: (1) converting to forefoot striking without focusing on cadence and (2) increasing cadence without focusing on foot strike...
May 18, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29842825/accuracy-and-precision-of-loadsol-%C3%A2-insole-force-sensors-for-the-quantification-of-ground-reaction-force-based-biomechanical-running-parameters
#7
Wolfgang Seiberl, Elisabeth Jensen, Josephine Merker, Marco Leitel, Ansgar Schwirtz
Force plates represent the "gold standard" in measuring running kinetics to predict performance or to identify the sources of running-related injuries. As these measurements are generally limited to laboratory analyses, wireless high-quality sensors for measuring in the field are needed. This work analysed the accuracy and precision of a new wireless insole forcesensor for quantifying running-related kinetic parameters. Vertical ground reaction force (GRF) was simultaneously measured with pit-mounted force plates (1 kHz) and loadsol® sensors (100 Hz) under unshod forefoot and rearfoot running-step conditions...
May 29, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29809093/determination-of-ankle-and-metatarsophalangeal-stiffness-during-walking-and-jogging
#8
Fabian Mager, Jim Richards, Malika Hennies, Eugen Dötzel, Ambreen Chohan, Alex Mbuli, Felix Capanni
Forefoot stiffness has been shown to influence joint biomechanics. However, little or no data exists on metatarsophalangeal stiffness. Twenty-four healthy rearfoot strike runners were recruited from a staff and student population at the University of Central Lancashire. Five repetitions of shod, self-selected speed level walking and jogging were performed. Kinetic and kinematic data were collected using retro-reflective markers placed on the lower limb and foot, to create a three-segment foot model using the Calibrated Anatomical System Technique...
May 29, 2018: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/29791183/a-2-year-prospective-cohort-study-of-overuse-running-injuries-the-runners-and-injury-longitudinal-study-trails
#9
Stephen P Messier, David F Martin, Shannon L Mihalko, Edward Ip, Paul DeVita, D Wayne Cannon, Monica Love, Danielle Beringer, Santiago Saldana, Rebecca E Fellin, Joseph F Seay
BACKGROUND: The National Center for Injury Prevention and Control, noting flaws in previous running injury research, called for more rigorous prospective designs and comprehensive analyses to define the origin of running injuries. PURPOSE: To determine the risk factors that differentiate recreational runners who remain uninjured from those diagnosed with an overuse running injury during a 2-year observational period. STUDY DESIGN: Cohort study; Level of evidence, 2...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29787473/factors-contributing-to-medial-tibial-stress-syndrome-in-runners-a-prospective-study
#10
James Becker, Mimi Nakajima, Will F W Wu
PURPOSE: Medial tibial stress syndrome (MTSS) is one of the most common overuse injuries sustained by runners. Despite the prevalence of this injury, risk factors for developing MTSS remain unclear. The purpose of this study was to prospectively evaluate differences in passive range of motion, muscle strength, plantar pressure distributions, and running kinematics between runners who developed MTSS and those who did not. METHODS: 24 NCAA Division 1 cross country runners participated in this study...
May 22, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29780837/foot-kinematics-differ-between-runners-with-and-without-a-history-of-navicular-stress-fractures
#11
James Becker, Stanley James, Louis Osternig, Li-Shan Chou
Background: A navicular stress fracture (NSF) is a common and high-risk injury in distance runners. It is not clear whether there are differences in foot structure and function between runners who have and those who have not sustained an NSF. Purpose/Hypothesis: This study compared foot structure, range of motion, and biomechanics between runners with a history of unilateral NSFs and runners who had never sustained this injury. The hypothesis was that runners with a history of NSFs will have less dorsiflexion and subtalar range of motion in a clinical examination and greater rearfoot eversion and higher eversion velocity while running than either the noninvolved feet or healthy controls...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29770274/do-running-speed-and-shoe-cushioning-influence-impact-loading-and-tibial-shock-in-basketball-players
#12
Wing-Kai Lam, Jacobus Liebenberg, Jeonghyun Woo, Sang-Kyoon Park, Suk-Hoon Yoon, Roy Tsz-Hei Cheung, Jiseon Ryu
Background: Tibial stress fracture (TSF) is a common injury in basketball players. This condition has been associated with high tibial shock and impact loading, which can be affected by running speed, footwear condition, and footstrike pattern. However, these relationships were established in runners but not in basketball players, with very little research done on impact loading and speed. Hence, this study compared tibial shock, impact loading, and foot strike pattern in basketball players running at different speeds with different shoe cushioning properties/performances...
2018: PeerJ
https://www.readbyqxmd.com/read/29760787/inverted-rearfoot-posture-in-subjects-with-coexisting-patellofemoral-osteoarthritis-in-medial-knee-osteoarthritis-an-exploratory-study
#13
Hirotaka Iijima, Hiroshi Ohi, Naoto Fukutani, Tomoki Aoyama, Eishi Kaneda, Kaoru Abe, Masaki Takahashi, Shuichi Matsuda
Background: While abnormal rearfoot posture and its relationship to patellofemoral (PF) pain has been thoroughly discussed in the literature, its relationship to patellofemoral osteoarthritis (PFOA) has not been determined. This study aimed to examine whether rearfoot posture is associated with a higher prevalence of radiographic PFOA in a compartment-specific manner in patients with medial tibiofemoral osteoarthritis (TFOA). Methods: Participants from orthopedic clinics ( n  = 68, age 56-90 years, 75...
2018: Journal of Foot and Ankle Research
https://www.readbyqxmd.com/read/29723650/calcaneus-range-of-motion-underestimated-by-markers-on-running-shoe-heel
#14
Ryan S Alcantara, Matthieu B Trudeau, Eric S Rohr
BACKGROUND: The measurement of rearfoot kinematics by placing reflective markers on the shoe heel assumes its motion is identical to the foot's motion. Studies have compared foot and shoe kinematics during running but with conflicting results. The primary purpose of this study was to compare shoe and calcaneus three-dimensional range of motion during running. A secondary purpose was to determine the effect of a less rigid heel counter on tibia motion. RESEARCH QUESTION: Do markers placed on the shoe heel accurately represent calcaneus kinematics during running? METHODS: Three-dimensional coordinate data were collected on 14 subjects (M/F: 9/5) who ran on an instrumented treadmill at 3...
June 2018: Gait & Posture
https://www.readbyqxmd.com/read/29713385/a-minimal-markerset-for-three-dimensional-foot-function-assessment-measuring-navicular-drop-and-drift-under-dynamic-conditions
#15
Patric Eichelberger, Angela Blasimann, Nicole Lutz, Fabian Krause, Heiner Baur
Background: The validity of predicting foot pronation occurring mainly at the midfoot by surrogate measures from the rearfoot, like eversion excursion, is limited. The dynamic navicular mobility in terms of vertical navicular drop ( dNDrop ) and medial navicular drift ( dNDrift ) may be regarded as meaningful clinical indicators to represent overall foot function. This study aimed to develop a minimal approach to measure the two parameters and to examine their intra- and interday reliability during walking...
2018: Journal of Foot and Ankle Research
https://www.readbyqxmd.com/read/29685563/changes-in-rearfoot-alignment-in-chronic-plantar-heel-pain
#16
Kadir Ilker Yildiz, Abdulhamit Misir, Turan Bilge Kizkapan, Mustafa Cukurlu
Plantar heel pain is a common disabling condition in adults. Biomechanical factors are important in the development of plantar heel pain. Quantitative changes in rearfoot alignment in patients with plantar heel pain have not been previously investigated. From April 2016 to March 2017, 100 patients with plantar heel pain and 100 healthy individuals were recruited. The foot posture index was used for the measurement of foot alignment. The generalized joint hypermobility condition was assessed using the Beighton scale...
May 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29682429/when-why-and-how-foot-orthoses-fos-should-be-prescribed-for-children-with-flexible-pes-planus-a-delphi-survey-of-podiatrists
#17
Sindhrani Dars, Hayley Uden, Saravana Kumar, Helen A Banwell
Background: Flexible pes planus (flat feet) in children is a common reason parents and caregivers seek health professionals consult and a frequent reason podiatrists prescribe foot orthoses. Yet no universal agreement exists on the diagnosis of this condition, or when and how foot orthoses should be prescribed. The aim of this study was to garner consensus and agreement among podiatrists on the use of FOs for paediatric flexible pes planus. Methods: A three round Delphi consensus survey was undertaken with 15 podiatry experts from Australia, New Zealand and the United Kingdom...
2018: PeerJ
https://www.readbyqxmd.com/read/29680311/midtarsal-locking-the-windlass-mechanism-and-running-strike-pattern-a-kinematic-and-kinetic-assessment
#18
Dustin A Bruening, Michael B Pohl, Kota Z Takahashi, Joaquin A Barrios
Changes in running strike pattern affect ankle and knee mechanics, but little is known about the influence of strike pattern on the joints distal to the ankle. The purpose of this study was to explore the effects of forefoot strike (FFS) and rearfoot strike (RFS) running patterns on foot kinematics and kinetics, from the perspectives of the midtarsal locking theory and the windlass mechanism. Per the midtarsal locking theory, we hypothesized that the ankle would be more inverted in early stance when using a FFS, resulting in decreased midtarsal joint excursions and increased dynamic stiffness...
May 17, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29625412/which-is-the-best-predictor-of-excessive-hip-internal-rotation-in-women-with-patellofemoral-pain-rearfoot-eversion-or-hip-muscle-strength-exploring-subgroups
#19
Amanda Schenatto Ferreira, Danilo de Oliveira Silva, Ronaldo Valdir Briani, Deisi Ferrari, Fernando Amâncio Aragão, Marcella Ferraz Pazzinatto, Fábio Mícolis de Azevedo
BACKGROUND: Patellofemoral pain (PFP) has been linked to increased patellofemoral joint stress as a result of excessive hip internal rotation. Lower hip strength and/or excessive rearfoot eversion have been used to explain such altered movement pattern; however, it is unknown which one is the best predictor of excessive hip internal rotation. RESEARCH QUESTION: To investigate if peak rearfoot eversion and/or peak concentric hip abductor strength can predict peak hip internal rotation during stair ascent in women with PFP...
May 2018: Gait & Posture
https://www.readbyqxmd.com/read/29573984/electromyographic-analysis-of-balance-exercises-in-single-leg-stance-using-different-instability-modalities-of-the-forefoot-and-rearfoot
#20
Martin Alfuth, Markus Gomoll
PURPOSE: To investigate the activity of lower extremity muscles in response to single-leg stance on a training device, destabilizing the forefoot while the rearfoot stands on a fixed plate and vice versa compared with a balance pad and the floor. DESIGN: Cross-sectional study. SETTING: University's laboratory. PARTICIPANTS: Twenty-seven healthy adults. METHODS: Surface electromyography and 2D video analysis were used to record the activity of lower extremity muscles and to control sagittal knee joint angle during single-leg stance trials under one stable control condition and five unstable conditions...
May 2018: Physical Therapy in Sport
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