Relevant bibliographies by topics / Ankle-Foot Orthosis Testing

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Conference papers

Academic literature on the topic 'Ankle-Foot Orthosis Testing'

Author: Grafiati
Published: 9 October 2021
Last updated: 30 July 2025

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Journal articles on the topic "Ankle-Foot Orthosis Testing"

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Middleton, E. A., G. R. B. Hurley, and J. S. McIlwain. "The role of rigid and hinged polypropylene ankle-foot-orthoses in the management of cerebral palsy: a case study." Prosthetics and Orthotics International 12, no. 3 (1988): 129–35. http://dx.doi.org/10.3109/03093648809079396.

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Ankle-foot orthoses are commonly used in the treatment of spastic cerebral palsy to hold the foot in a position conducive to a more functional gait. This study, utilizing quantitative biomechanical techniques, evaluates the effects of a rigid ankle-foot orthosis and a hinged ankle-foot orthosis on spastic cerebral palsy gait. The subject was a 4.5 year old female diagnosed as spastic diplegic cerebral palsied shortly after birth. Testing involved collection of kinematic coordinate data employing a WATSMART video system and ground reaction force' data using a Kistler force plate. Jensen's (1978
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Arazpour, Mokhtar, Fardin Ahmadi, Monireh Ahmadi Bani, et al. "Gait evaluation of new powered knee–ankle–foot orthosis in able-bodied persons: A pilot study." Prosthetics and Orthotics International 38, no. 1 (2013): 39–45. http://dx.doi.org/10.1177/0309364613486917.

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Background: Knee–ankle–foot orthoses are utilized for walking by patients with lower limb weakness. However, they may be rejected by patients due to the lack of knee flexion available when using them for walking activities. Aim: The aim of this study was to perform a pilot study investigating the effect of a new powered knee–ankle–foot orthosis on walking in healthy persons before testing with patients with lower limb weakness. Methods: Walking evaluation was performed on five healthy subjects (mean age: 26 ± 5.6 years). Walking trials were randomly performed in three test conditions: normal w
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Williamson, Patrick, Aron Lechtig, Philip Hanna, et al. "Pressure Distribution in the Ankle and Subtalar Joint With Routine and Oversized Foot Orthoses." Foot & Ankle International 39, no. 8 (2018): 994–1000. http://dx.doi.org/10.1177/1071100718770659.

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Background: Foot orthoses are used to treat many disorders that affect the lower limb. These assistive devices have the potential to alter the forces, load distribution, and orientation within various joints in the foot and ankle. This study attempts to quantify the effects of orthoses on the intra-articular force distribution of the ankle and subtalar joint using a cadaveric testing jig to simulate weight bearing. Methods: Five lower-limb cadaveric specimens were placed on a custom jig, where a 334-N (75-lb) load was applied at the femoral head, and the foot was supported against a plate to s
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Darwich, Ayham, Hasan Nazha, Aleen Sliman, and William Abbas. "Ankle–foot orthosis design between the tradition and the computerized perspectives." International Journal of Artificial Organs 43, no. 5 (2019): 354–61. http://dx.doi.org/10.1177/0391398819890348.

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This study focuses on the drop foot case related to hyperthyroidism of the ankle joint resulting in the relaxation of the toes during walking. This condition requires treatment using an ankle–foot orthosis. Traditional orthosis techniques lack precision and depend on the skill of the fabricator. This research aims to make a bias in ankle–foot orthosis design and analysis methods, where a complete methodology of numerical design and testing has been proposed using advanced engineering software. A numerical model of the patient’s foot was generated and used to design an ankle–foot orthosis model
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Bin Ab Patar, Mohd Nor Azmi, Hanif Ramli, Jamaluddin Mahmud, and Abdul Halim Yusof. "Efficacy and Safety Testing of a New Biologically Based Design Ankle Foot Orthosis in Healthy Volunteer." Applied Mechanics and Materials 110-116 (October 2011): 1953–57. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.1953.

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The ankle-foot of human body is a multi-joint structure that accommodates complex foot motion. Abnormality to the ankle-foot due to injury or disease can result in abnormal gait motion. In such cases, physiotherapist has to assist hemiplegic patients (ankle dorsiflexor muscles with lack of dorsiflexion assist moment) in rehabilitation therapy by using gait training in parallel bars. Physiotherapist has to support hemiplegic patient to position foot and also supports their stand balance. This prolongs multiple task puts extra burden to physiotherapist which gives side effect such as muscular st
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Sheehan, Conor, and Elaine Figgins. "A comparison of mechanical properties between different percentage layups of a single-style carbon fibre ankle foot orthosis." Prosthetics and Orthotics International 41, no. 4 (2016): 364–72. http://dx.doi.org/10.1177/0309364616652015.

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Background:Currently, a range of ‘off-the-shelf’ ankle foot orthoses are used in clinical practice, of various functions and designs. Their use relates to immediate control over mild conditions.Objectives:To investigate the properties of carbon fibre ankle foot orthoses at different percentage layups and provide a comparison of these through assessment of the (1) elastic properties, (2) deflection about the ankle (including the calculation of stiffness) and (3) failure under compressive forces (dorsiflexion).Study design:Experimental, bench test.Methods:Literature was reviewed to derive a suit
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Davis, Priya Chantal, Timothy Michael Bach, and Darren Mark Pereira. "The Effect of Stance Control Orthoses on Gait Characteristics and Energy Expenditure in Knee-Ankle-Foot Orthosis Users." Prosthetics and Orthotics International 34, no. 2 (2010): 206–15. http://dx.doi.org/10.3109/03093641003773189.

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Stance Control knee-ankle foot orthoses (SCO) differ from their traditional locked knee counterparts by allowing free knee flexion during swing while providing stability during stance. It is widely accepted that free knee flexion during swing normalizes gait and therefore improves walking speed and reduces the energy requirements of walking. Limited research has been carried out to evaluate the benefits of SCOs when compared to locked knee-ankle foot orthoses (KAFOs). The purpose of this study was to evaluate the effectiveness of SCOs used for patients with lower limb pathology. Energy expendi
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McGrath, Robert L., Ciera A. Price, William Brett Johnson, and Walter Lee Childers. "Advancing Exoskeleton Development: Validation of a Robotic Surrogate to Measure Tibial Strain." Bioengineering 11, no. 5 (2024): 490. http://dx.doi.org/10.3390/bioengineering11050490.

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Bone stress injuries are prevalent among athletes and military recruits and can significantly compromise training schedules. The development of an ankle–foot orthosis to reduce tibial load and enable a faster return to activity will require new device testing methodologies capable of capturing the contribution of muscular force on tibial strain. Thus, an actuated robotic surrogate leg was developed to explore how tibial strain changes with different ankle–foot orthosis conditions. The purpose of this work was to assess the reliability, scalability, and behavior of the surrogate. A dual actuati
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Cappa,, P., F. Patane`,, and M. M. Pierro. "A Novel Device to Evaluate the Stiffness of Ankle-Foot Orthosis Devices." Journal of Biomechanical Engineering 125, no. 6 (2003): 913–17. http://dx.doi.org/10.1115/1.1634993.

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The evaluation of mechanical behavior of plastic Ankle-Foot Orthosis (AFO) is important since AFO can provide an efficient support to patients with disabilities in locomotion. This paper reports on a novel testing apparatus that allows: (a) the evaluation of AFO stiffness in sagittal and frontal planes; (b) the conduction of semi-automatic trials; and, finally, (c) a global accuracy associated to the AFO stiffness values always less than 4%. The stiffness values are determined by the measurements of the imposed relative displacements between the foot and the shank of the orthosis and the induc
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Baev, P. O., V. V. Pivovarov, S. V. Kornieiev, N. Yu Tregub, and S. Nolte. "Application of test-orthoses on lower extremities for determination of physical abilities and rehabilitation potential of persons with serious impairments of function of support and walking." Paediatric Surgery. Ukraine, no. 4(73) (December 30, 2021): 94–97. http://dx.doi.org/10.15574/ps.2021.73.94.

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The most numerous and most complex group of diseases which result in impairment of human function of support and walking are neuro-muscular diseases and traumas of a spine and a spinal cord. Impairments which rise as a consequence of such diseases, require effective orthotic management which will allow the patient to compensate the lost functions necessary at stable walking. For the last 15 years in Ukraine, as well as in the world, a great many of various constructions of orthoses on different levels of the lower extremity, which cover all existing pathologies, has appeared. But as practical
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Dissertations / Theses on the topic "Ankle-Foot Orthosis Testing"

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Thibodeau, Alexis. "3D-Printed Surrogate Lower Limb for Testing Ankle-Foot Orthoses." Thesis, Université d'Ottawa / University of Ottawa, 2021. http://hdl.handle.net/10393/42755.

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Traditionally, the mechanical testing of ankle-foot orthoses (AFOs) has been performed with simple limb surrogates, typically with a single axis ankle joint and rigid foot and shank components. Since many current AFO designs allow 3D motion, a surrogate lower limb (SLL) that provides anatomically similar motion in all planes is needed to enable realistic load testing and cyclic testing in a controlled manner. The aim of this thesis was to design, fabricate and test a novel SLL that provides anatomically realistic 3D foot motion, based on a consensus of the passive lower limb range of motion (R
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Viennet, Emmanuel, and Loïc Bouchardy. "Preliminary design and testing of a servo-hydraulic actuation system for an autonomous ankle exoskeleton." Technische Universität Dresden, 2020. https://tud.qucosa.de/id/qucosa%3A71229.

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The work presented in this paper aims at developing a hydraulic actuation system for an ankle exoskeleton that is able to deliver a peak power of 250 W, with a maximum torque of 90 N.m and maximum speed of 320 deg/s. After justifying the choice of a servo hydraulic actuator (SHA) over an electro hydrostatic actuator (EHA) for the targeted application, some test results of a first functional prototype are presented. The closed-loop unloaded displacement frequency response of the prototype shows a bandwidth ranging from 5 Hz to 8 Hz for displacement amplitudes between +/-5mm and +/- 20mm, thus d
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Lai, Hung-Jen, and 賴弘仁. "Ankle-foot simulator development for testing ankle-foot orthoses." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/25481858341400066357.

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博士<br>國立陽明大學<br>醫學工程研究所<br>98<br>The fatigue failure of low-temperature thermoplastic ankle-foot orthoses (AFOs) was commonly observed in clinics. However, there was no standard evaluation for the AFOs to enhance the understanding of how AFOs become more readily acceptable to patients. Therefore, this study aimed to develop an ankle-foot simulator (AFS) as a testing apparatus for AFOs, and performed a pilot test to investigate the failure mechanism of anterior ankle-foot orthosis (AAFO). The accuracy and repeatability of the AFS during cyclic walking, cyclic stepping and cyclic stepping with t
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Books on the topic "Ankle-Foot Orthosis Testing"

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Kalra, Parveen. Optimized Design and Testing of Kids Ankle Foot Orthosis. a Case Study. GRIN Verlag GmbH, 2019.

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Conference papers on the topic "Ankle-Foot Orthosis Testing"

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Gebre, Biruk A., Rodrigo Nogueira, Shubham Patidar, et al. "Efficient Digital Modeling and Fabrication Workflow for Individualized Ankle Exoskeletons." In ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-70603.

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Abstract We introduce a new design method to tailor the physical structure of a powered ankle-foot orthosis to the wearer’s leg morphology and improve fit. We present a digital modeling and fabrication workflow that combines scan-based design, parametric configurable modeling, and additive manufacturing (AM) to enable the efficient creation of personalized ankle-foot orthoses with minimal lead-time and explicit inputs. The workflow consists of an initial one-time generic modeling step to generate a parameterized design that can be rapidly configured to customizable shapes and sizes using a des
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Husain, Marwah Ali, and Mohsin Abdullah Al-Shammari. "Manufacturing and testing of knee-ankle-foot-orthosis (KAFO)." In 4TH INTERNATIONAL SCIENTIFIC CONFERENCE OF ALKAFEEL UNIVERSITY (ISCKU 2022). AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0181762.

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Zhou, Yuan, and Lu Liu. "Development and Testing of a User-adaptive Ankle Foot Orthosis." In 2020 5th International Conference on Advanced Robotics and Mechatronics (ICARM). IEEE, 2020. http://dx.doi.org/10.1109/icarm49381.2020.9195386.

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Bhadane, Minal Y., Charles Armstrong, Mohamed Samir Hefzy, and Mohammad H. Elahinia. "An Automated Testing Assembly for Characterizing Stiffness of an Ankle Foot Orthosis." In ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2011. http://dx.doi.org/10.1115/smasis2011-5197.

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An ankle foot orthosis (AFO) is a device that provides a controlled force to compensate for the muscle deficiencies in the ankle and helps normalize the gait of the patient. Evidence has indicated that there exists an optimal match correlating the patient’s gait related problems and the AFO stiffness. AFO ankle stiffness is measured by the moment around the ankle joint exerted by the AFO per degree of ankle joint rotation. To date, several testing devices and procedures have been developed to assess the stiffness characteristics of AFOs. Most of the devices are manually driven and may not exac
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Jiang, Tianshu, and William Durfee. "BENCH TESTING OF A TUNABLE ANKLE-FOOT ORTHOSIS WITH ADJUSTABLE STIFFNESS AND NEUTRAL ANGLE." In 2023 Design of Medical Devices Conference. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/dmd2023-4672.

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Abstract Cerebral palsy is the most common childhood motor disability that effects 0.3% of children in the US and two-thirds of them have gait impairment. An ankle-foot orthosis (AFO) is commonly prescribed as a gait assistance. The function of an AFO is maximized when its stiffness and neutral angle are optimally prescribed to address each user’s issue. However, the prescription process is not standardized and is subjective to the prescribing clinician. Only one-third of AFOs improved the user’s gait while another one-third negatively affected the gait. A tunable AFO is developed to allow cli
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Cummins, Joshua J., Eric J. Barth, and Douglas E. Adams. "Modeling of a Pneumatic Strain Energy Accumulator for Variable System Configurations With Quantified Projections of Energy Efficiency Increases." In ASME/BATH 2015 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/fpmc2015-9605.

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The pneumatic Strain Energy Accumulator (pSEA), a device that stores the energy of compressed air in the strain energy of a rubber bladder, has recently undergone proof of concept testing showing promise in compact energy storage applications. An adequate model of the pneumatic strain energy accumulator on a systems level is needed to explore the design space in order to optimize the device. The recent success of the pneumatic strain energy accumulator on an Ankle Foot Orthosis (AFO) medical assist device serves as motivation for such a systems level model. In laboratory experiments the AFO me
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Fite, Richard, Adrian A. Polliack, Samuel Landsberger, Donald R. McNeal, and Vicente Vargas. "The Utilization of Ambient-Stored Pre-Preg Carbon Composite Material With a New Fabrication Technique for the Development of Ankle-Foot Braces." In ASME 1998 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/imece1998-0155.

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Abstract A novel, room temperature-stored carbon-graphite cloth has been utilized to produce a variety of ankle-foot orthoses (AFO). It was discovered that the curing process of the composite could be altered, and the AFO could be partially cured under vacuum. After removal of the composite AFO from the mold, the material maintains its shape and allows the orthotist to hand-modify it further. Following this, the brace is returned to the oven for final curing. This advance in the fabrication process may allow for the manufacture and distribution of modular AFOs in the partially cured state with
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