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https://www.readbyqxmd.com/read/28425251/evaluation-of-plantar-pressure-distributions-in-patients-with-anteriorcruciate-ligament-deficiency-preoperative-and-postoperative-changes
#1
Engin Çetin, Mehmet Ali Deveci, Murat Songür, Hamza Özer, Sacit Turanli
BACKGROUND/AIM: Anterior cruciate ligament (ACL) deficiency results in several kinematic changes in the lower extremities. The aim of this study is to define the plantar pressure parameters in ACL-deficient patients and to show the effect of ACL reconstruction on dynamic plantar pressure. MATERIALS AND METHODS: Forty patients with unilateral ACL rupture and 40 healthy controls were included in this study. Dynamic plantar pressures of both groups were recorded by the EMED SF-2 system during level walking...
April 18, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28422549/obesity-is-associated-with-altered-plantar-pressure-distribution-in-elderly-women
#2
Silvia Gonçalves Ricci Neri, André Bonadias Gadelha, Ana Luiza Matias Correia, Juscélia Cristina Pereira, Ana Cristina de David, Ricardo Moreno Lima
Increased plantar pressure has been found to be related with greater risk of falling. Although there is evidence suggesting that obesity is linked to foot disorders, the association between obesity and plantar pressure of older adults has been poorly investigated. The purpose of this study was to examine the association between obesity and plantar pressure distribution and to explore its relationship with body fat distribution. Two hundred and eleven elderly women took part in this cross-sectional study. Body mass index were taken for obesity classification...
April 19, 2017: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/28385920/blood-pressure-and-calf-muscle-oxygen-extraction-during-plantar-flexion-exercise-in-peripheral-artery-disease
#3
J Carter Luck, Amanda J Miller, Faisal Aziz, John F Radtka, David N Proctor, Urs A Leuenberger, Lawrence I Sinoway, Matthew D Muller
Peripheral artery disease (PAD) is an atherosclerotic vascular disease that affects 200 million worldwide. While PAD primarily affects large arteries, it is also associated with microvascular dysfunction, an exaggerated blood pressure (BP) response to exercise, and high cardiovascular mortality. We hypothesized that fatiguing plantar flexion exercise that evokes claudication elicits a greater reduction in skeletal muscle oxygenation (SmO2) and a higher rise in BP in PAD compared to age-matched healthy subjects, but low-intensity steady state plantar flexion elicits similar responses between groups...
April 6, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28367189/the-biomechanical-study-of-the-influence-to-the-forefoot-plantar-pressure-of-the-first-tarsometatarsal-joint-fracture-dislocation-fixed-by-three-different-implants
#4
Xiao Yu, Qing-Jiang Pang, Xian-Jun Chen
OBJECTIVES: To study the influence of forefoot plantar pressure of the first tarsometatarsal joint fracture-dislocation by three different implants to provide experimental reference in selecting implants. METHODS: Eight fresh foot specimens were made into the models of the first tarsometatarsal joint fracture-dislocation, which were fixed with 3.5 mm cortical screw, 1/4 tubular plate and compressive staple in turn. After the loading of 600N, the changes of the plantar pressure in forefoot were measured by the method of the F-scan plantar pressure system...
January 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28349064/reliability-of-baropodometry-on-the-evaluation-of-plantar-load-distribution-a-transversal-study
#5
Daniel Baumfeld, Tiago Baumfeld, Romário Lopes da Rocha, Benjamim Macedo, Fernando Raduan, Roberto Zambelli, Thiago Alexandre Alves Silva, Caio Nery
Introduction. Baropodometry is used to measure the load distribution on feet during rest and walking. The aim of this study was to evaluate changes in plantar foot pressures distribution due to period of working and due to stretching exercises of the posterior muscular chain. Methods. In this transversal study, all participants were submitted to baropodometric evaluation at two different times: before and after the working period and before and after stretching the muscles of the posterior chain. Results. We analyzed a total of 54 feet of 27 participants...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28345173/increasing-preferred-step-rate-during-running-reduces-plantar-pressures
#6
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/28333570/plantar-pressure-and-surgical-indication-of-toe-arthroplasty-for-rheumatoid-forefoot-deformity
#7
Hyunho Lee, Hajime Ishikawa, Yusuke Miyagawa, Chinatsu Takai, Yumi Nomura, Tetsuya Nemoto, Daisuke Kobayashi, Asami Abe, Hiroshi Otani, Satoshi Ito, Kiyoshi Nakazono, Takao Ishii, Shu Saito, Yasuaki Tokuhashi, Akira Murasawa
OBJECTIVES: The objective of this study is to clarify the surgical indication for rheumatoid forefoot deformity according to background characteristics and plantar pressure. METHODS: Patients with rheumatoid arthritis were divided into a non-surgical group (group N) and a surgical group (group S). The former consisted of 225 ft, and the latter consisted of 88 ft. DAS28, Japanese Society for Surgery of the Foot rheumatoid arthritis foot and ankle scale (JSSF scale) and hallux valgus angle (HVA) were evaluated as background characteristics...
March 23, 2017: Modern Rheumatology
https://www.readbyqxmd.com/read/28331259/long-term-follow-up-on-the-donor-foot-after-thumb-reconstruction-using-big-toe-wrap-around-flap-in-two-different-operation-methods
#8
Zhi-Guo Ma, Yong-Jun Guo, Hou-Jun Yan, Qi-Ming Li, Bin Ma
The function of the donor foot has been affected after using big toe wrap-around flap for thumb reconstruction. A modified operation method has been developed to reduce the adverse effect on the donor foot. The current study compared the long-term effect of the classic and the modified operation methods on the donor foot. Gait analysis was carried out, including how the patient walked, the walking speed and walking distance, and how the patient jumped and ran. Plantar pressure was measured while the patient was standing and moving...
February 2017: Indian Journal of Surgery
https://www.readbyqxmd.com/read/28326159/effects-of-weight-bearing-exercise-on-a-mini-trampoline-on-foot-mobility-plantar-pressure-and-sensation-of-diabetic-neuropathic-feet-a-preliminary-study
#9
Wararom Kanchanasamut, Praneet Pensri
Objective: Foot and ankle exercise has been advocated as a preventative approach in reducing the risk of foot ulceration. However, knowledge about the appropriate types and intensity of exercise program for diabetic foot ulcer prevention is still limited. The current study aimed to examine the effects of an eight-week mini-trampoline exercise on improving foot mobility, plantar pressure and sensation of diabetic neuropathic feet. Methods: Twenty-one people with diabetic peripheral neuropathy who had impaired sensation perception were divided into two groups...
2017: Diabetic Foot & Ankle
https://www.readbyqxmd.com/read/28320506/unexpected-walking-perturbations-reliability-and-validity-of-a-new-treadmill-protocol-to-provoke-muscular-reflex-activities-at-lower-extremities-and-the-trunk
#10
Tilman Engel, Juliane Mueller, Stephan Kopinski, Antje Reschke, Steffen Mueller, Frank Mayer
Instrumented treadmills offer the potential to generate standardized walking perturbations, which are particularly rapid and powerful. However, technical requirements to release adequate perturbations regarding timing, duration and amplitude are demanding. This study investigated the test-retest reliability and validity of a new treadmill perturbation protocol releasing rapid and unexpected belt perturbations to provoke muscular reflex responses at lower extremities and the trunk. Fourteen healthy participants underwent two identical treadmill walking protocols, consisting of 10 superimposed one-sided belt perturbations (100ms duration; 2m/s amplitude), triggered by a plantar pressure insole 200ms after heel contact...
April 11, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28317554/chimpanzee-and-human-midfoot-motion-during-bipedal-walking-and-the-evolution-of-the-longitudinal-arch-of-the-foot
#11
Nicholas B Holowka, Matthew C O'Neill, Nathan E Thompson, Brigitte Demes
The longitudinal arch of the human foot is commonly thought to reduce midfoot joint motion to convert the foot into a rigid lever during push off in bipedal walking. In contrast, African apes have been observed to exhibit midfoot dorsiflexion following heel lift during terrestrial locomotion, presumably due to their possession of highly mobile midfoot joints. This assumed dichotomy between human and African ape midfoot mobility has recently been questioned based on indirect assessments of in vivo midfoot motion, such as plantar pressure and cadaver studies; however, direct quantitative analyses of African ape midfoot kinematics during locomotion remain scarce...
March 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28314520/interaction-between-postural-asymmetry-and-visual-feedback-effects-in-undisturbed-upright-stance-control-in-healthy-adults
#12
Patrice R Rougier, Samir Boudrahem
OBJECTIVES: The technique of additional visual feedback has been shown to significantly decrease the center of pressure (CP) displacements of a standing subject. Body-weight asymmetry is known to increase postural instability due to difficulties in coordinating the reaction forces exerted under each foot and is often a cardinal feature of various neurological and traumatic diseases. To examine the possible interactions between additional visual feedback and body-weight asymmetry effects, healthy adults were recruited in a protocol with and without additional visual feedback, with different levels of body-weight asymmetry...
March 14, 2017: Neurophysiologie Clinique, Clinical Neurophysiology
https://www.readbyqxmd.com/read/28292884/vascular-conductance-and-muscle-blood-flow-during-exercise-are-altered-by-inspired-oxygen-fraction-and-arterial-perfusion-pressure
#13
Rodrigo Villar, Richard L Hughson
We tested the hypothesis during the combined challenges of altered inspired O2 fraction (FIO2) and posture changes at lower power output regardless of body position that the vascular conductance (VC) recruitment to the exercising muscle would not limit muscle perfusion and estimated O2 delivery (DO2est ). However, in head-down tilt at the higher power output exercise in hypoxia, the recruitment of VC would have a functional limitation which would restrict muscle blood flow (MBF) leading to a limitation in DO2est with consequent increases in metabolic stress...
March 2017: Physiological Reports
https://www.readbyqxmd.com/read/28284667/center-of-pressure-and-center-of-mass-behavior-during-gait-initiation-on-inclined-surfaces-a-statistical-parametric-mapping-analysis
#14
Marcus Fraga Vieira, Ademir Alves de Brito, Georgia Cristina Lehnen, Fábio Barbosa Rodrigues
This study analyzed gait initiation (GI) on inclined surfaces with 68 young adult subjects of both sexes. Ground reaction forces and moments were collected using two AMTI force platforms, of which one was in a horizontal position and the other was inclined by 8% in relation to the horizontal plane. Departing from a standing position, each participant executed three trials in the following conditions: horizontal position (HOR), inclined position at ankle dorsi-flexion (UP), and inclined position at ankle plantar-flexion (DOWN)...
February 27, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28282671/pedobarographic-analysis-in-total-knee-arthroplasty
#15
Melih Güven, Onur Kocadal, Budak Akman, Uğur Şayli, Faik Altıntaş
Pedobarographic gait analysis is a useful tool for the determination of loading distributions and alterations on the lower extremity and their reflection on the foot sole after many orthopaedic surgical applications. To date, there have been no studies evaluating the relationship between component alignment and changes of pedobarographic gait analysis in total knee arthroplasty (TKA). We aimed to investigate the effects of TKA and prosthetic alignment on the distribution of pedobarographic parameters. Quantitative gait patterns of 47 patients were prospectively evaluated by using pedobarography 1 week before surgery and at the seventh month, on average, postoperatively...
March 10, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28272013/when-traditional-offloading-is-not-an-option-could-an-external-fixator-be-a-solution-a-case-report
#16
Abdulaziz A Kimawi, Robert J Snyder, Mario A Cala, Cherison Cuffy
Offloading is a cornerstone in managing diabetic plantar foot ulcers; however, it often represents one of the most challenging aspects of treatment for clinician and patient alike. The authors present a case of a 61-year-old African American man with type 2 diabetes and a limb-threatening plantar foot ulcer that required aggressive wound and surgical management. Due to the heavy drainage and patient adherence issues, traditional offloading techniques such as total contact cast, DH Pressure Relief Walker (Össur, Foothill Ranch, CA), and wedge shoes, among others, were not viable options...
February 2017: Wounds: a Compendium of Clinical Research and Practice
https://www.readbyqxmd.com/read/28271930/plantar-static-pressure-distribution-in-normal-feet-using-cotton-socks-with-different-structures
#17
Zeynab Soltanzadeh, Saeed Shaikhzadeh Najar, Mohammad Haghpanahi, Mohammd Reza Mohajeri-Tehrani
BACKGROUND: The major goal of investigating plantar pressure in patients with pain or those at risk for skin injury is to reduce pressure under prominent metatarsal heads, especially the first and second metatarsals. In research, the insole is used to reduce plantar pressure by increasing the contact area in the midfoot region, which, in turn, induces an uncomfortable feeling near the arch during walking. It is deduced that sock structure can redistribute plantar pressure distribution...
January 2017: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/28268324/testing-and-comparing-of-film-type-sensor-materials-in-measurement-of-plantar-pressure-distribution
#18
Satu Rajala, Timo Salpavaara, Sampo Tuukkanen
Simple in-shoe sensors based on film-type sensor materials were developed in this study. Three sensor materials were tested: polyvinylidenefluoride (PVDF), cellulose nanofibrils (CNF) and ElectroMechanical Film (EMFi). Plantar pressure distributions of a subject were measured with the developed in-shoe sensors; each consisting of three sensor channels (lateral and medial metatarsal heads and heel). In addition, piezoelectric sensor sensitivities and crosstalk between the sensor channels were determined. Differences between the tested film-type materials and measured plantar pressure distribution signals were studied...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28265729/quality-control-of-the-foot-revascularization-using-indocyanine-green-fluorescence-imaging
#19
Nicla Settembre, Petteri Kauhanen, Anders Albäck, Kristyna Spillerova, Maarit Venermo
OBJECTIVES: Critical limb ischemia (CLI) is a clinical diagnosis, confirmed by objective tests, usually ankle-brachial index (ABI), toe pressure (TP) and TcPO2. Furthermore, the anatomical lesions in patients affected by CLI were visualized by ultrasound, angiography, CTA, or MRA. Indocyanine green fluorescence imaging (ICG-FI) is a diagnostic modality for assessing foot perfusion. We aimed to study the usefulness of ICG-FI in the quality control of revascularization. MATERIALS AND METHODS: One hundred and four CLI limbs in 101 patients were studied with ICG-FI using SPY Elite before and after open or endovascular revascularization...
March 6, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28238588/rest-stress-limb-perfusion-imaging-in-humans-with-contrast-ultrasound-using-intermediate-power-imaging-and-microbubbles-resistant-to-inertial-cavitation
#20
Brian P Davidson, James Hodovan, J Todd Belcik, Federico Moccetti, Aris Xie, Azzdine Y Ammi, Jonathan R Lindner
BACKGROUND: Contrast-enhanced ultrasound (CEU) limb perfusion imaging is a promising approach for evaluating peripheral artery disease (PAD). However, low signal enhancement in skeletal muscle has necessitated high-power intermittent imaging algorithms, which are not clinically feasible. We hypothesized that CEU using a combination of intermediate power and a contrast agent resistant to inertial cavitation would allow real-time limb stress perfusion imaging. METHODS: In normal volunteers, CEU of the calf skeletal muscle was performed on separate days with Sonazoid, Optison, or Definity...
February 23, 2017: Journal of the American Society of Echocardiography
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