Download or read book Design Enhancement of a Solid Ankle Foot Orthosis written by Khamis Sa'id Abu-Hasaballah and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optimized Design and Testing of Kids Ankle Foot Orthosis A Case Study written by Harish Kumar Banga and published by GRIN Verlag. This book was released on 2019-11-20 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technical Report from the year 2019 in the subject Engineering - Mechanical Engineering, grade: 10.00, , language: English, abstract: Ankle foot orthosis (AFO) are externally applied device that a reused to support as well as control the foot and ankle joint of patients having foot deformity. Foot drop is caused by a deficiency in the ankle joint in which results in the weakness of ankle and toe dorsiflexion. This research proposes a new approach to design and performance evaluation of AFO fabrication that utilizes modeling, simulation and analysis software (like Open Sim, Ansys Work bench & Solid work) and additive manufacturing technologies to customize the fit form to an individual. By implementing a carbon fibre strut at ankle joint the design will result in a stronger, more comfortable, more flexible AFO that can adaptively constrain ankle movement for various different activities. GAIT Analysis was performed on six patients having foot drop, from the emotion analysis system in the GAIT lab. The data from the GAIT lab was then imported into the Open Sim to create a biomechanics simulation to extract the joint angle and joint moments. These value of ankle angle and moment with & without AFO was compared with normal value. The results show a considerable effect of the use of the AFO by drop foot patients in terms of ankle angle and ankle moments. Furthermore, the muscular analysis in terms of activation and forces also suggest that the dorsiflexors are assisted by the AFO during GAIT and the activation of the plantarflexion are considerably less during the lifting of the foot of the ground.

Download or read book Journal of Rehabilitation Research Development written by and published by . This book was released on 2001 with total page 954 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of Rehabilitation R D written by and published by . This book was released on 2001 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design of a Powered Ankle Foot Orthosis AFO written by Muhammad Asyraf Anuar and published by . This book was released on 2015 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tuning a Custom Made Solid Ankle foot Orthosis in Early Stroke Rehabilitation written by Melissa Rodgers and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tuning ankle-foot orthoses (AFO) involves adjusting the design for biomechanical optimisation to improve gait. Research conlcuded only half of NHS orthotists execute tuning with lack of three-dimensional (3D) equipment a restricting factor. The study had three aims: first to investigate spatiotemporal and kinematic effects of fitting and tuning AFO on gait of acute stroke, compared to un-tuned AFO; secondly, to evaluate use of novel 3d gait analysis system which provided point of care feedback; and finally to establish any difference to tuning prescription between the novel system and observational gait analysis (OGA) by a NHS orthotist. Two males participated. Both presented hemiplegia in the lower limbs following a recent stroke and had been precribed a custom-made solid AFO which was tuned by the NHS orthotist using OGA. Gait analysis and tuning were also carried out using novel system producing point of care feedback of the following trials; treadmill, walking with shoes only, un-tuned AFO and during tuning. The software indicated the same wedge as the orthotist chose using OGA. Walking velocity and step symmetry increased for both patients with AFO. P1 achieved highest velocity and step-length with the un-tuned AFO. This was rejected as it caused excessive knee flexion throughout the gait cycle. Cadence increased for P2 and decreased for P1. P2's step length decreased with the use of an AFO. Neither patient achieved normal kinemtaic profiles for the hip, knee or ankle with the use of a tuned or un-tuned AFO.

Download or read book The Design of a Device to Assist in the Prescription of an Ankle foot Orthosis written by James Bartlett Paull and published by . This book was released on 1974 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design and Analysis of a Dual Axis Articulated Ankle foot Orthosis written by Elizabeth L. Lawrence and published by . This book was released on 2004 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Design and Control of Active Ankle foot Orthoses written by Kenneth A. Shorter and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Ankle foot orthoses (AFOs) can be used to ameliorate the impact of impairments to the lower limb neuromuscular motor system that affect gait. Existing AFO technologies include passive devices with fixed and articulated joints, semi-active devices that modulate damping at the joint and active devices that make use of a variety of technologies to produce power to move the foot. Emerging technologies provide a vision for fully powered, untethered AFOs. In this dissertation, a novel portable powered ankle-foot orthosis (PPAFO) cabable of providing un-tethered assistance during gait is presented. The PPAFO provides both plantarflexor and dorsiflexor torque assistance via a bi-directional pneumatic rotary actuator. The system uses a portable pneumatic power source (compressed CO2 bottle) and embedded electronics to control the motion of the foot. Experimental data from two impaired and five healthy subjects were collected to demonstrate design functionality. The impaired subjects had bilateral impairments to the lower legs that caused weakness to the plantarflexors, in one case, and to the dorsiflexors in the other. Data from the healthy walkers demonstrated the PPAFO0́9s capability to provide correctly timed plantarflexor and dorsiflexor assistance during gait. The results from the impaired subjects demonstrated the PPAFO0́9s ability to provide functional assistance during gait. Additionally, this dissertation presented a modeling and control approach to address limitations present in the PPAFO through the introduction of a new hardware configuration and new control architecture. A combined model consisting of both the PPAFO and the human foot and shank segments was first derived and validated. Next, the current and the new PPAFO system configurations were evaluated both in simulation and experimentally during three simplified functional gait tasks: (1) motion control of the foot at the start of the gait cycle, (2) plantarflexor torque assistance during late stance, and (3) dorsiflexor position control of the foot during swing. The resulting analysis showed that the new system configuration both outperformed and was more efficient than the current PPAFO configuration. The stringent design requirements of light weight, small size, high efficiency and low noise make the creation of daily wear assist devices challenging, but once such devices appear they will present new opportunities for clinical treatment of gait abnormalities.

Download or read book Investigation on Fatigue Life of Ankle foot Orthosis Design Model Using Ansys Workbench written by and published by . This book was released on 2013 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Solutions for Ankle Foot Orthosis in Diabetic Care written by Oliver Alexander and published by . This book was released on 2024-02-13 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: : "Solutions for Ankle Foot Orthosis in Diabetic Care" explores cutting-edge advancements in the development and design of ankle foot orthosis (AFO) tailored specifically for patients dealing with diabetic foot-related complications. This comprehensive guide delves into the intricate world of biomechanical principles, leveraging advanced algorithms to revolutionize AFO solutions. In this enlightening text, readers will gain insights into the meticulous process of crafting AFOs that address the unique challenges faced by individuals with diabetic foot ulcers. The book navigates through bio-mechanical intricacies, offering a detailed examination of the principles governing AFO design. It highlights the intersection of medical science and engineering, providing an invaluable resource for healthcare professionals, researchers, and practitioners seeking innovative solutions for diabetic foot care. With a focus on enhancing patient outcomes, "Solutions for Ankle Foot Orthosis in Diabetic Care" emphasizes personalized approaches driven by algorithmic precision. The narrative weaves together theoretical foundations with practical applications, fostering a deeper understanding of the symbiotic relationship between technology and healthcare in the realm of diabetic foot management. This book serves as an indispensable guide, offering a roadmap for the future of AFO design and its pivotal role in elevating the standard of care for individuals navigating the complexities of diabetes-induced foot conditions.

Download or read book Index Medicus written by and published by . This book was released on 2001 with total page 1876 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1963- include as pt. 2 of the Jan. issue: Medical subject headings.

Download or read book Development and Evaluation of a Quick Release Posterior Strut Ankle Foot Orthosis written by Wentao Li and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Ankle foot orthosis (AFO) stiffness affects ankle range of motion but can also provide energy storage and return to improve mobility. To perform multiple activities during the day, a person may want to change their AFO stiffness to meet their activity's demand. Carrying multiple AFO and changing the AFO is inconvenient and could discourage users from engaging in multiple activities. This thesis developed a new quick-release mechanism (QRM) that allows users to easily change posterior strut elements to change AFO stiffness. The QRM attaches to the AFO and requires no tools to operate. The new QRM includes a quick-release key, weight-bearing pin, receptacle anchor, and immobilization pin. A prototype was modelled with SolidWorks and simulated with SolidWorks Simulation. The QRM was designed to have no mechanical failure during intense activities such as downhill walking and running. Unlike a solid screw connection, the QRM needed an additional part to eliminate unsecured motion related to clearance between the quick release key and receptacle anchor. Mechanical test results and measurement data demonstrated no deformation on each part after mechanical testing. User testing revealed that, although the quick release mechanism can be locked or unlocked rapidly, the person's posture when operating can facilitate strut swapping. A learning effect occurred by repeated practice. The Quick Release AFO (QRAFO) prototype verified the manufacturing feasibility of the QRAFO design. Overall, the novel quick release AFO improved strut swapping time without sacrificing device strength.

Download or read book Lower limb Prosthetics and Orthotics written by Joan E. Edelstein and published by SLACK Incorporated. This book was released on 2011 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is a comprehensive overview of lower-limb prosthetics and orthotics, covering normal and pathological gait, lower-limb biomechanics, clinical applications, as well as prosthetic and orthotic designs and components. Clinical management is incorporated throughout the text, including basic surgical concepts, postoperative management, preprosthetic care, and training in the use of devices. Additionally, this text incorporates unique features relevant to physicians such as prescription writing and prosthetic and orthotic construction and modification, as well as the latest research regarding energy consumption and long-term utilization of protheses.

Download or read book Design of an Energy conserving Ankle foot orthotic AFO written by Adam C. Wolovick and published by . This book was released on 2005 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Improvement of Ankle Joint Stability in Foot Drop Patients During Walking by 3D Printed Ankle Foot Orthoses written by Harish Banga and published by GRIN Verlag. This book was released on 2018-10-04 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Document from the year 2018 in the subject Medicine - Anatomy, Physiology, Cytology, grade: 10.0, , language: English, abstract: Lower leg foot orthoses are orthotic gadgets that help the decrease leg joint and are suitable for a few pathologies, typically those that improve the foot drop circumstance, which is resulting from a lower leg joint insufficiency. In the existing paintings, a custom designed model of decrease leg foot orthosis applied as a part of the human frame has been created. Additive Manufacturing structures has been utilized to create the lower leg foot orthosis (Selective Laser Sintering Technology). Kinematic estimations had been received in a stride lab from foot drop sufferers, with and with out three-D plastic printed lower leg foot orthoses on unmarried toes. The consequences got proven that with the orthoses, the lower leg joint conduct is sort of a instantly torsional spring, with out a hysteresis. With an goal to check the sufficiency of the AFO, Clinical GAIT Analysis of Foot Drop Patients has been performed. Customized 3-d printed Ankle Foot orthosis has been established to present higher GAIT cycle execution. The consequences of this look at indicated that development of gait in foot drop sufferers with 3-d published ankle foot orthosis that's measured via Clinical Gait evaluation.

Download or read book Design and Simulation of a Single hinge and Adaptive Ankle Foot Orthoses Based on Superelasticity of Shape Memory Alloys written by Morteza Gorzinmataee and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this thesis is to propose and develop new designs of Ankle Foot Orthosis (AFO) based on superelastic characteristics of shape memory alloys (SMAs). The problem investigated in this research is a human gait abnormality called drop foot caused by the paralysis of the muscles which allow the ankle to dorsiflex. This neuromuscular disorder results in foot slap after heel strike and toe drag during leg swing. As the most common solution, drop foot patients use an orthotic device called AFO add support and improve their gait. However, development of a more compact assistive device, which could passively or actively secure the normal gait requirements, is still a need by both patients and clinicians. Based on investigations and experimentations performed in Dynamic and Smart Systems Laboratory at University of Toledo, SMA is a potential solution due to its unique stiffness behavior and hysteretic characteristics. In this work superelastic characteristics of SMAs is considered as an enabler in the development of new generation of AFOs. Within this work a passive AFO design is proposed which employs a superelastic SMA element as the hinge of the device. This SMA hinge controls the ankle motion by storing and releasing energy during walking. The superelastic element enables the AFO to provide sufficient torque during dorsiflexion to raise the foot in the swing phase of the gait. In order to evaluate the design performance a comprehensive gait analysis study is performed to extract the requirements of motion, understand the critical loads, and calibrate the desired stiffness profiles for the ankle and the superelastic element. A Finite Element Analysis is performed to realize an optimum design for the SMA hinge. Preliminary simulations are carried out in the sagittal plane of the body to verify the functionality of the design in providing the motion requirements. Unlike existing AFOs with two hinges, the proposed design uses only one hinge. The multi-axial loading of the ground reaction in 3D is then simulated to estimate lateral response of the hinge in preventing hypermobility and securing the walking stability. To maintain stability the hinge should limit the motion in directions other than rotation in the sagittal plane. In addition to this passive hinge, superelastic SMA is also envisioned to realize an active AFO. To this end, an active superelastic SMA element which is adjusted structurally and dynamically is used to reproduce the stiffness variation of a healthy ankle. This concept could produce a controlled stiffness profile desired for different walking conditions such as various speeds. Actuation mechanism design for this concept is also discussed. Although, the major contribution of this study is developing a reliable passive AFO design, experimental and numerical analyses confirm the functionality of both passive and active SMA AFOs.