Relevant bibliographies by topics / In-shoe orthoses

Academic literature on the topic 'In-shoe orthoses'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "In-shoe orthoses"

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Illgner, Ulrich, Tymo Budny, Marc Hoyer, and Hans Henning Wetz. "Clinical Acceptance, Reasons for Rejection, and Reduction of In-Shoe Peak Pressure with Interdigital Silicone Orthoses." Journal of the American Podiatric Medical Association 104, no. 1 (January 1, 2014): 30–33. http://dx.doi.org/10.7547/0003-0538-104.1.30.

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Background For several years, confectioned or customized interdigital silicone orthoses have been used to treat toe malformations; however, long-term clinical and biomechanical studies are missing. The aim of this study was to evaluate the biomechanical effects of these orthoses and their clinical acceptance. Methods In 2008, 46 patients (30 women and 16 men; average age, 56.8 years) received interdigital silicone orthoses. All of the patients were included in the biomechanical and clinical study. Compliance and acceptance were measured by the Muenster shoe and foot questionnaire, which includes 13 items on pain, activities of daily living, satisfaction, and activity. Mean follow-up was 18 months. Ten feet (eight patients) were chosen by random and underwent pedobarography. One forefoot sensor and two single sensors were attached between the skin and the orthosis. Measurements were performed in-shoe three times with and without the orthosis without removal of the sensors. Results Forty-four of the 46 patients (95.7%) were included. At the 18-month investigation, 19 patients no longer used their orthoses, most commonly because of pain and failure of the material. Twenty-two patients regularly used their orthoses (8 h/d on average). In-shoe peak pressure lowered significantly with orthosis use (P < .04). Patients who used the orthoses were mostly satisfied. Conclusions Interdigital silicone orthoses reduce in-shoe peak pressure. Patient satisfaction was good. The durability of the material has to be optimized, and manufacturing remains difficult. The effect on ulcer reduction must be evaluated in a large prospective study.
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Spooner, Simon K., David K. Smith, and Kevin A. Kirby. "In-Shoe Pressure Measurement and Foot Orthosis Research." Journal of the American Podiatric Medical Association 100, no. 6 (November 1, 2010): 518–29. http://dx.doi.org/10.7547/1000518.

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Foot orthoses are believed to exert their therapeutic effect on the human locomotor apparatus by altering the location, magnitude, and temporal patterns of ground reaction forces acting on the plantar foot during weightbearing activities. In-shoe pressure-measurement systems are increasingly being used by clinicians and researchers to assess kinetic changes at the foot-orthosis interface to better understand the function of foot orthoses and to derive more efficacious treatments for many painful foot and lower-extremity abnormalities. This article explores how the inherent three-dimensional surface topography and load-deformation characteristics of foot orthoses may challenge the validity, reliability, and clinical usefulness of the data obtained from in-shoe pressure-measurement systems in the context of foot orthotic therapy and research. The inability of in-shoe pressure-measurement systems to measure shearing forces beneath the foot, the required bending of the flat two-dimensional sensor insole to fit the pressure insole to the three-dimensional curves of the orthosis, the subsequent unbending of the sensor insole to display it on a computer monitor, and variations in the load-deformation characteristics of orthoses are all sources of potential error in examination of the kinetic effects of foot orthoses. Consequently, caution is required when interpreting the results of orthotic research that has used in-shoe pressure insole technology. The limitations of the technology should also be given due respect when in-shoe pressure measurement is used to make clinical decisions and prescribe custom foot orthoses for patients. (J Am Podiatr Med Assoc 100(6): 518–529, 2010)
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Arvin, Mina, Mojtaba Kamyab, Vahideh Moradi, Behnam Hajiaghaei, and Nader Maroufi. "Influence of modified solid ankle-foot orthosis to be used with and without shoe on dynamic balance and gait characteristic in asymptomatic people." Prosthetics and Orthotics International 37, no. 2 (August 20, 2012): 145–51. http://dx.doi.org/10.1177/0309364612454159.

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Background: Ankle-foot orthoses are usually used in combination with footwear. Shoe design can have a significant effect on kinematics of the lower limb joints and line of action of the ground reaction force during walking. But, ankle-foot orthosis–footwear combination is not appropriate for indoor barefoot walking in some Asian cultures. In this study, we have modified a solid ankle-foot orthosis in order to set it in the same position as a solid ankle-foot orthosis–footwear combination. Objective: To investigate the effect of a modified solid ankle-foot orthosis; a solid ankle-foot orthosis which can be locked in different positions on gait and balance performance in comparison with a conventional solid ankle-foot orthosis, a common solid ankle-foot orthosis–shoe combination in asymptomatic adults. Study Design: Cross sectional. Methods: Two standard solid ankle-foot orthoses were manufactured with the ankle joint in neutral position. Then, one of these solid ankle-foot orthoses was modified in order to allow locking in a different alignment. Walk across, limit of stability, and sit-to-stand tests of the balance master system were performed while participants wore the modified solid ankle-foot orthosis aligned in 5°–7° anterior inclination without a shoe and a conventional solid ankle-foot orthosis–shoe combination. Results: There was no significant change in walking speed, step length, and step width with the conventional and modified solid ankle-foot orthoses. In addition, movement velocity and maximum excursion of the center of gravity during the limit of stability test were not different, although the maximal forward excursion of the center of gravity was longer when wearing the modified solid ankle-foot orthosis compared to the conventional solid ankle-foot orthosis–shoe combination ( P = 0.000). Sway velocity of the center of gravity did not change during the sit-to-stand test. Conclusion: The results demonstrated that the modified solid ankle-foot orthosis had the same effects as the conventional solid ankle-foot orthosis–shoe combination on the gait and balance performance of asymptomatic adults. Clinical relevance The findings of the present study can be used as the basis for further investigations on the efficacy of the modified solid ankle-foot orthoses in different neuromuscular populations in order to help people who do not wear shoes at home, as is the custom in some Asian cultures.
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Condie, David N. "In-shoe orthoses." Current Opinion in Orthopaedics 9, no. 6 (December 1998): 100–104. http://dx.doi.org/10.1097/00001433-199812000-00018.

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Brown, Melanie, Sally Rudicel, and Alberto Esquenazi. "Measurement of Dynamic Pressures at the Shoe-Foot Interface During Normal Walking with Various Foot Orthoses Using the FSCAN System." Foot & Ankle International 17, no. 3 (March 1996): 152–56. http://dx.doi.org/10.1177/107110079601700306.

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Foot orthoses are routinely used in clinical practice to redistribute pressure at the shoe-foot interface, although there is very little scientific evidence to support the efficacy of their use. In this study, the FSCAN sensor (an ultrathin in-shoe transducer) was used to determine the efficacy of pressure redistribution with a Plastizote, Spenco, cork, and a plastic foot orthosis as compared with control (no orthosis). Measurement variations of up to 18% occurred between sensors, and changes in stance time of up to 5% occurred between the orthoses and the control conditions. In spite of these potentially confounding variables, statistically significant differences in peak pressure between the orthotic types and the control condition (range, 9–146%) were noted. We conclude that Plastizote, cork, and plastic foot orthoses can be beneficial in relieving pressure in certain regions of the shoe-foot interface, but that they may do so at the cost of increasing pressure in other areas of the plantar surface.
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Imhauser, Carl W., Nicholas A. Abidi, David Z. Frankel, Kenneth Gavin, and Sorin Siegler. "Biomechanical Evaluation of the Efficacy of External Stabilizers in the Conservative Treatment of Acquired Flatfoot Deformity." Foot & Ankle International 23, no. 8 (August 2002): 727–37. http://dx.doi.org/10.1177/107110070202300809.

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This study quantified and compared the efficacy of in-shoe orthoses and ankle braces in stabilizing the hindfoot and medial longitudinal arch in a cadaveric model of acquired flexible flatfoot deformity. This was addressed by combining measurement of hindfoot and arch kinematics with plantar pressure distribution, produced in response to axial loads simulating quiet standing. Experiments were conducted on six fresh-frozen cadaveric lower limbs. Three conditions were tested: intact-unbraced; flatfoot-unbraced; and flatfoot-braced. Flatfoot deformity was created by sectioning the main support structures of the medial longitudinal arch. Six different braces were tested including two in-shoe orthoses, three ankle braces and one molded ankle-foot orthosis. Our model of flexible flatfoot deformity caused the calcaneus to evert, the talus to plantarflex and the height of the talus and medial cuneiform to decrease. Flexible flatfoot deformity caused a pattern of medial shift in plantar pressure distribution, but minimal change in the location of the center of pressure. Furthermore, in-shoe orthoses stabilized both the hindfoot and the medial longitudinal arch, while ankle braces did not. Semi-rigid foot and ankle orthoses acted to stabilize the medial longitudinal arch. Based on these results, it was concluded that treatment of flatfoot deformity should at least include use of in-shoe orthoses to partially restore the arch and stabilize the hindfoot.
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Payehdar, Somaieh, Hassan Saeedi, Amir Ahmadi, Mohammad Kamali, Maryam Mohammadi, and Vahid Abdollah. "Comparing the immediate effects of UCBL and modified foot orthoses on postural sway in people with flexible flatfoot." Prosthetics and Orthotics International 40, no. 1 (June 18, 2014): 117–22. http://dx.doi.org/10.1177/0309364614538091.

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Background: Different types of foot orthoses have been prescribed for patients with flatfoot. Results of several studies have shown that orthoses were able to change balance parameters in people with flatfoot. However, the possible effect of orthosis flexibility on balance has not yet been investigated. Objectives: The aim of the current study was to investigate the immediate effect of a rigid University of California Berkeley Laboratory (UCBL) foot orthosis, a modified foot orthosis, and a normal shoe on the postural sway of people with flexible flatfoot. Study design: Quasi-experimental. Methods: In all, 20 young adults with flatfoot (aged 23.5 ± 2.8 years) were invited to participate in this study. The Biodex Stability System was employed to perform standing balance tests under three testing conditions, namely, shoe only, UCBL, and modified foot orthosis. Total, medial–lateral, and anterior–posterior sway were evaluated for each condition. Results: The results of this study revealed no statistical difference in the medial–lateral and anterior–posterior stability indices between foot orthoses and shoed conditions. The overall stability index with the UCBL foot orthosis, however, was significantly lower than that with the modified foot orthosis. Conclusion: The UCBL foot orthosis was able to decrease total sway and improve balance in people with flexible flatfoot. Clinical relevance Results of previous studies have indicated that foot orthoses were able to affect the balance of people with flatfeet. However, the possible effects of flexible orthoses on balance have not been examined. The results of this study may provide new insight into material selection for those people with balance disorders.
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Guldemond, Nick A., Pieter Leffers, Antal P. Sanders, Hans Emmen, Nicolaas C. Schaper, and Geert H. I. M. Walenkamp. "Casting Methods and Plantar Pressure." Journal of the American Podiatric Medical Association 96, no. 1 (January 1, 2006): 9–18. http://dx.doi.org/10.7547/0960009.

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Foot orthoses are widely used to treat various foot problems. A literature search revealed no publications on differences in plantar pressure distribution resulting from casting methods for foot orthoses. Four casting methods were used for construction of orthoses. Two foam box techniques were used: accommodative full weightbearing method (A) and functional semiweightbearing method (B). Also, two suspension plaster casting techniques were used: accommodative casting (C) and functional subtalar joint neutral position (Root) method (D). Their effects on contact area, plantar pressure, and walking convenience were evaluated. All orthoses increased the total contact area (mean, 17.4%) compared with shoes without orthoses. Differences in contact areas between orthoses for total plantar surface were statistically significant. Peak pressures for the total plantar surface were lower with orthoses than without orthoses (mean, 22.8%). Among orthoses, only the difference between orthoses A and B was statistically significant. Differences between orthoses for the forefoot were small and not statistically significant. The gait lines of the shoe without an insole and of the accommodative orthoses are more medially located than those of functional orthoses. Walking convenience in the shoe was better rated than that with orthoses. There were no differences in perception of walking convenience between orthoses A, B, and C. Orthosis D had the lowest convenience rating. The four casting methods resulted in differences between orthoses with respect to contact areas and walking convenience but only slight differences in peak pressures. (J Am Podiatr Med Assoc 96(1): 9–18, 2006)
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Aminian, Gholamreza, Zahra Safaeepour, Mahboobeh Farhoodi, Abbas Farjad Pezeshk, Hassan Saeedi, and Basir Majddoleslam. "The effect of prefabricated and proprioceptive foot orthoses on plantar pressure distribution in patients with flexible flatfoot during walking." Prosthetics and Orthotics International 37, no. 3 (October 19, 2012): 227–32. http://dx.doi.org/10.1177/0309364612461167.

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Background:Previous studies have suggested that orthoses with different constructions could alter gait parameters in flexible flatfoot. However, there is less evidence about the effect of insoles with proprioceptive mechanism on plantar pressure distribution in flatfoot.Objectives:To assess the effect of orthoses with different mechanisms on plantar pressure distribution in subjects with flexible flatfoot.Study Design:Quasi-experimental.Methods:In total, 12 flatfoot subjects were recruited for this study. In-shoe plantar pressure in walking was measured by Pedar-X system under three conditions including wearing the shoe only, wearing the shoe with a proprioceptive insole, and wearing the shoe with a prefabricated foot insole.Results:Using the proprioceptive insoles, maximum force was significantly reduced in medial midfoot, and plantar pressure was significantly increased in the second and third rays (0.94 ± 0.77 N/kg, 102.04 ± 28.23 kPa) compared to the shoe only condition (1.12 ± 0.88 N/kg and 109.79 ± 29.75 kPa). For the prefabricated insole, maximum force was significantly higher in midfoot area compared to the other conditions ( p < 0.05).Conclusions:Construction of orthoses could have an effect on plantar pressure distribution in flatfeet. It might be considered that insoles with sensory stimulation alters sensory feedback of plantar surface of foot and may lead to change in plantar pressure in the flexible flatfoot.Clinical relevanceBased on the findings of this study, using orthoses with different mechanisms such as proprioceptive intervention might be a useful method in orthotic treatment. Assessing plantar pressure can also be an efficient quantitative outcome measure for clinicians in evidence-based foot orthosis prescription.
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Palamarchuk, HJ, and J. Fry. "In-shoe casting technique for specialized sports shoes." Journal of the American Podiatric Medical Association 79, no. 9 (September 1, 1989): 462–65. http://dx.doi.org/10.7547/87507315-79-9-462.

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The use of vacuum casting to create better-fitting orthoses for special athletic shoes has been discussed. By vacuum-forming a negative cast within the confines of special athletic shoes, such as bicycling cleats or fencing shoes, a better-fitting orthosis can be fabricated with little or no special adjustments or modifications necessary to create the best fit and function.
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Dissertations / Theses on the topic "In-shoe orthoses"

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Heller, Michelle Frances. "Biomechanical changes in gait and posture as a result of in-shoe orthoses and external load." 2005. http://etda.libraries.psu.edu/theses/approved/WorldWideIndex/ETD-1152/index.html.

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Book chapters on the topic "In-shoe orthoses"

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Werd, Matthew B. "Athletic Shoe Lacing in Sports Medicine." In Athletic Footwear and Orthoses in Sports Medicine, 79–87. New York, NY: Springer New York, 2010. http://dx.doi.org/10.1007/978-0-387-76416-0_8.

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Werd, Matthew B. "Athletic Shoe Lacing in Sports Medicine." In Athletic Footwear and Orthoses in Sports Medicine, 107–14. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-52136-7_8.

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Levine, David. "Athletic Shoe Evaluation." In Athletic Footwear and Orthoses in Sports Medicine, 55–62. New York, NY: Springer New York, 2010. http://dx.doi.org/10.1007/978-0-387-76416-0_5.

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Levine, David. "Athletic Shoe Evaluation." In Athletic Footwear and Orthoses in Sports Medicine, 67–74. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-52136-7_5.

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White, Josh. "Athletic Shoe Fit and Modifications." In Athletic Footwear and Orthoses in Sports Medicine, 63–67. New York, NY: Springer New York, 2010. http://dx.doi.org/10.1007/978-0-387-76416-0_6.

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White, Josh, and Arnie Davis. "Athletic Shoe Fit, Modifications, and Prescriptions." In Athletic Footwear and Orthoses in Sports Medicine, 75–90. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-52136-7_6.

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Conference papers on the topic "In-shoe orthoses"

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Schaller, Marcus, Seyed Mostafa Rezayat Sorkhabadi, and Wenlong Zhang. "Robotic Shoe: An Ankle Assistive Device for Gait Plantar Flexion Assistance." In 2020 Design of Medical Devices Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/dmd2020-9058.

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Abstract Gait disorders can be attributed to a variety of factors including aging, injury, and neurological disorders. A common disorder involves the ankle push-off phase of an individual’s gait, which is vital to their ability to walk and propel themselves forward. During the ankle push-off stage, plantar flexor muscles are required to provide a large amount of torque to propel the heel off the ground, thus a condition that compromises the strength of these muscles can greatly affect one’s walking ability. In order to rectify these issues, Ankle-Foot Orthoses (AFO) are used to provide support to a user’s ankle and assist with the force needed for heel off. This article introduces a robotic AFO which was developed with the intent of aiding during the heel-off stage. The proposed design utilizes the user’s body weight to extend constant force springs positioned parallel to the calf to replicate the muscular force generated in plantar flexion. The extended spring is held in place using a ratcheting mechanism which is released with a solenoid during heel up. Similar research has been conducted in which assistive AFO’s have been created, however little research has investigated the use of constant force springs in such devices. A healthy user tested the device on a treadmill and surface electromyography (sEMG) sensors were placed on the user’s plantar flexor muscles to monitor potential reductions in muscular activity resulting from the assistance provided by the AFO device. The data demonstrates the robotic shoe was able to assist during the heel-off stage and reduced activation in the plantar flexor muscles was evident from the EMG data collected.
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Durfee, William, Saeed Hashemi, and Andrew Ries. "Hydraulic Ankle Foot Orthosis Emulator for Children With Cerebral Palsy." In BATH/ASME 2020 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/fpmc2020-2791.

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Abstract Objective: Ankle foot orthoses (AFOs) are used by nearly 50% of children with cerebral palsy (CP) to ameliorate gait impairments. The methods used to prescribe and tune the mechanical properties of an AFO, including its angular stiffness about the ankle, are based on the intuition and experience of the practitioner. The long-term goal of this research is to develop and deploy a technology-based solution to prescribing passive AFOs that uses an AFO emulator to be used in the clinic that can, under computer control, vary its stiffness in real-time to determine the best stiffness for walking. The objective of this project was to design and bench-test a first-generation wearable hydraulic ankle exoskeleton, and to conduct a small clinical trial to determine whether walking in a conventional plastic AFO was the same as walking in the hydraulic exoskeleton whose stiffness was programmed to match that of the conventional AFO. Methods: The hydraulic ankle exoskeleton was comprised of a wearable ankle exoskeleton tethered by small-diameter hydraulic hose to a push-behind cart that contained the hydraulic power supply and control components. The ankle component contained a novel double-ended cylinder with a cable anchored to the piston. The system was controlled to emulate a rotary spring. Bench top tests were performed to validate the performance of the system. In addition, an early feasibility clinical trial was conducted with five children with cerebral palsy who walked in three conventional AFOs (flexible, medium and stiff) and the hydraulic AFO controlled to match each stiffness. Kinematics and dynamics of gait were measured with a 12-camera motion capture system and a force plate. Results: The weight of the wearable exoskeleton plus shoe was 1.5 kg, 60% over the design goal. The system, running at a rail pressure of 141 bar (2,050 psi), could produce 62 Nm of torque and could emulate springs from 1 to 4.6 Nm/deg, the stiffness range of most conventional AFOs. Once calibrated, the torque-displacement properties were similar to the matched conventional AFO. Walking metrics were the same for hydraulic and conventional AFOs. Interpretation: Small-scale hydraulics are effective for a wearable exoskeleton that is designed to mimic a passive AFO and hydraulics can be used to emulate a rotary stiffness. While heavier than the design target, the added weight of the hydraulic system did not seem to impact walking in a significant way. The metrics used to evaluate walking were not sensitive enough to detect any subtle differences between walking with the hydraulic system and walking in a normal AFO.
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