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Journal articles on the topic 'Prosthetic foot'

Author: Grafiati

Published: 4 June 2021

Last updated: 27 July 2025

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1

Mohammed, Salsabil karim. "Design and Manufacturing of a New Prosthetic Foot." Journal Port Science Research 4, no. 2 (2021): 109–15. http://dx.doi.org/10.36371/port.2020.2.8.

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All prosthetic foot designs, adapted in common use, don't imitate the specific qualities of a typical human foot. The premise of this task is to explore current prosthetics so as to plan and assemble a more human like prosthesis. In attempted such a structure, the new prosthesis will show a more extensive scope of qualities than those showed in current prosthetic feet. In doing as such, the new prosthesis will give a closer portrayal of the capacities inalienable to an ordinary human foot. The qualities associated with ordinary strolling incorporate dorsiflexion foot test. The qualities showed

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Padhi, Jayanta Kumar, Parthasarathi Swain, and Choudhury Madhusmita Das. "Development of an Adjustable Pylon for Lower Limb Prosthesis: A Prototype." International Journal of Health Sciences and Research 12, no. 4 (2022): 120–23. http://dx.doi.org/10.52403/ijhsr.20220414.

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Amputation of a limb is always perceived as a catastrophe. The principles underlying creation of a stump adapted to modern prosthetic fittings must be fully understood and the patient managed by a multidisciplinary team. In paediatric patients, managing the prosthetic limb length is a crucial point that should be maintained according to the expected growth potential of the child. The main problem with child amputee is the heel height and adjustment of height of prosthesis during change of foot wears and bare foot walking. Children with congenital amputation and congenital anomalies need specia

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Lestari, Wahyu Dwi. "Passive Prosthetic Ankle Design Based on Indonesian Anthropometry." Journal of Mechanical Engineering Science and Technology (JMEST) 6, no. 1 (2022): 1. http://dx.doi.org/10.17977/um016v6i12022p001.

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Foot prosthesis is a replacement for the foot to overcome activity limitations due to disease, birth defects, accidents or amputations. Many foot prosthetics have been developed in recent years to treat patients. However, prostheses on the market today have drawbacks, including their high price, lack of comfort, stiff ankles, and low durability. The main objective of this study is to develop an existing ankle-foot prosthesis design that approximates the resemblance of a human foot according to the anthropometry of Asians, especially Indonesians. This study contains the design of a prosthetic f

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Syamimi Shamsuddin, Muhammad Ezzaq Elfi Rafie, Intan Fatihah Ahmad, Winal Zikril Zulkifli, Mahasan Mat Ali, and Amalina Amir. "Design and Development of Printable Prosthetic Foot using Acrylonitrile Butadiene Styrene (ABS) for Below Knee Amputation (BKA)." Malaysian Journal on Composites Science & Manufacturing 10, no. 1 (2023): 11–23. http://dx.doi.org/10.37934/mjcsm.10.1.1123.

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Prosthesis is an artificial replacement for a person's missing limb to help regain mobility and the ability to manage daily activities. The type of prosthetic covered in this project is for people with below-knee amputation (BKA). Muscle fatigue is a major issue for amputees who lose a lower limb after prolonged use of artificial limbs. Available designs of prosthetics for BKA are also expensive. This study aims to design and develop an affordable and comfortable prosthetic foot with an energy-story ability for persons with BKA using an additive manufacturing process to help reduce fatigue. Th

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Walker, Nicole R., Myrriah P. Laine Dyreson, Juan E. Cave II, et al. "Functional dynamic prosthesis alignment maintained across varying footwear using a modular prosthetic ankle-feet system." PLOS One 20, no. 5 (2025): e0323647. https://doi.org/10.1371/journal.pone.0323647.

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Changing footwear often presents a challenge for lower extremity prosthesis users. When prosthesis alignment is completed by the Certified Prosthetist, the prosthetic foot is set at an angle accommodating a single shoe heel rise (shoe heel height minus forefoot height); deviation from this heel rise causes misalignment of the prosthesis. To address this problem, the Rehabilitation & Engineering Center for Optimizing Veteran Engagement & Reintegration (RECOVER) has developed a modular ankle-feet system allowing for the use of footwear of varying heel rises without the need for realignme

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Pataniak, Rakesh, and Rani Kumari. "Cost-effective External Keel SACH Foot for Syme’s Prosthesis." Journal of Integrated Health Sciences 11, no. 2 (2023): 114–17. http://dx.doi.org/10.4103/jihs.jihs_29_23.

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Abstract Background: The prosthetic management of Syme’s amputation is a challenge when it comes to the attachment of SACH foot. SACH foot is made up of small narrow wooden keel which is covered by soft flexible sponge rubber therefore it is difficult to attach SACH foot directly to the Syme’s socket. Moreover, there is no rigid structure of the SACH foot available for bonding with the laminated socket considering the Syme’s amputee. Aim: This new design of prosthetic foot provide easy attachment to the Syme’s socket, thus helping in the prosthetic management of Syme’s amputation. Methodology:

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Fridman, A., I. Ona, and E. Isakov. "The influence of prosthetic foot alignment on trans-tibial amputee gait." Prosthetics and Orthotics International 27, no. 1 (2003): 17–22. http://dx.doi.org/10.3109/03093640309167973.

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An optimally aligned prosthesis, as accomplished by the subjective judgment of the prosthetist, guarantees the best quality of gait. Yet, amputees can adapt to a large variety of geometrical configurations of the prosthetic components. Different external rotation angles of the foot in trans-tibial (TT) prostheses were investigated. The study tried to identify (a) the relationship between foot angle and other gait parameters and (b) the compensating pattern of the amputees to excessive external rotation of the foot. Eight (8) TT amputees, fitted with an identical type of prosthesis, were invest

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Naseri, Amirreza, Majid Mohammadi Moghaddam, Mohammad Gharini, and Maziar Ahmad Sharbafi. "A Novel Adjustable Damper Design for a Hybrid Passive Ankle Prosthesis." Actuators 9, no. 3 (2020): 74. http://dx.doi.org/10.3390/act9030074.

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Specifications of actuators when interacting with biological systems such as the human body are entirely different from those used in industrial machines or robots. One important instance of such applications is assistive devices and prostheses. Among various approaches in designing prostheses, recently, semi-active systems attracted the interest of researchers. Even more, some commercial systems benefit from designs such as implementing an adjustable damper in the ankle prosthesis to increase range of motion. The main reason for adding damper is to assist amputees’ walking locomotion on slope

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Major, Matthew J., Joel Scham, and Michael Orendurff. "The effects of common footwear on stance-phase mechanical properties of the prosthetic foot-shoe system." Prosthetics and Orthotics International 42, no. 2 (2017): 198–207. http://dx.doi.org/10.1177/0309364617706749.

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Background:Prosthetic feet are prescribed based on their mechanical function and user functional level. Subtle changes to the stiffness and hysteresis of heel, midfoot, and forefoot regions can influence the dynamics and economy of gait in prosthesis users. However, the user’s choice of shoes may alter the prosthetic foot-shoe system mechanical characteristics, compromising carefully prescribed and rigorously engineered performance of feet.Objectives:Observe the effects of footwear on the mechanical properties of the prosthetic foot-shoe system including commonly prescribed prosthetic feet.Stu

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Warchoł, Kamil, Monika Szuba, Anna Kopeć, Adam Martowicz, and Jakub Bryła. "Application of 3D printing technology to the components subjected to significant mechanical loads, using the example of a prosthetic climbing foot prototype." Bulletin of the Military University of Technology 72, no. 4 (2023): 121–42. http://dx.doi.org/10.5604/01.3001.0054.7921.

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The paper describes the results of a study aimed at identifying the mechanical parameters of a prosthetic foot designed for wall climbing. The prosthesis was manufactured with an additive method using FDM/MEX [Fused Deposition Modelling/ Material Extrusion] technology. At the initial stage of the research, uniaxial tensile and three-point bending tests were carried out on specimens made of six different materials to select a material for the production of the prosthetic component. Based on the results, a functional prosthetic foot prototype was designed and fabricated from two selected polymer

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R. Thakre, Devidas, Manoj Kumar Tiwari, and Deepak P. Prabhu. "Comparative Study between Indigenously Developed Multi-Axis Prosthetic Foot and SACH Foot in Terms of Gait Parameters and Energy Expenditure in the Patients with Unilateral Transtibial Amputation." International Journal of Health Sciences and Research 13, no. 5 (2023): 128–42. http://dx.doi.org/10.52403/ijhsr.20230515.

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Background: There are a large number of commercially available, prosthetic feet. Properly selecting prosthetic foot-ankle components with appropriate design characteristics is critical for successful amputee rehabilitation. However, currently developed prosthetic foot designs are high performance, dynamic response, energy restoring, and multi-axial motion properties. These are all made from carbon composite material, with superior strength and weight ratio. In fitting an artificial limb, the goal of the prosthetist is to restore the ability of the amputee to perform everyday activities in an e

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Mulder, Inge A., Herman R. Holtslag, Leonardus FA Beersma, and Bart FJM Koopman. "Keep moving forward: A new energy returning prosthetic device with low installation height after Syme or Pirogoff amputation." Prosthetics and Orthotics International 38, no. 1 (2013): 12–20. http://dx.doi.org/10.1177/0309364613485112.

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Background:The incidence of foot amputations increased in the Netherlands to 3.3/100,000 people up to 1994. Despite these numbers, only a few basic prosthetic and orthotic devices are available, and all lack functionality to restore ankle and foot mobility.Objectives:The aim of this explorative study was to design and test a unique prosthesis for Syme or Pirogoff amputees with the necessary low installation height but restoring ankle and foot mobility.Study design:A case study was performed.Methods:The new prosthesis was designed and numerically analyzed on aspects concerning strength and defo

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Ali, Saad Mahmood, and Mahmood Shurooq. "Design and Manufacturing of a Low-Cost Prosthetic Foot." Ingeniería e Investigación 43, no. 3 (2023): e98916. http://dx.doi.org/10.15446/ing.investig.98916.

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Below-knee prosthetics are used to restore the functional activity and appearance of persons with lower limb amputation. This work attempted to design and manufacture a low-cost, novel, comfortable, lightweight, durable, and flexible smart below-knee foot prosthesis prototype. This prosthesis foot was designed according to the natural leg measurement of an adult male patient. The foot is composed of rigid PVC layers interspersed with elastic strips of PTFE, and the axis of the ankle joint is flexible and consists of metal layers and a composite of polymeric damping strips with different mechan

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Lacraz, Alain, Stéphane Armand, Katia Turcot, et al. "Comparison of the Otto Bock solid ankle cushion heel foot with wooden keel to the low-cost CR-Equipements™solid ankle cushion heel foot with polypropylene keel: A randomized prospective double-blind crossover study assessing patient satisfaction and energy expenditure." Prosthetics and Orthotics International 41, no. 3 (2016): 258–65. http://dx.doi.org/10.1177/0309364616677649.

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Background:The International Committee of the Red Cross supports a worldwide program of prosthetic fitting and rehabilitation. In this context, a prosthetic foot was developed and widely distributed in least developed countries.Study design:Prospective, randomized, double-blind, controlled study.Objective:To compare patient satisfaction and energy expenditure during ambulation between a low-cost prosthetic foot designed with a polypropylene keel (CR-Equipements™solid ankle cushion heel, International Committee of the Red Cross) to a well-recognized solid ankle cushion heel foot with a wooden k

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Verheul, Floor Jacoba Marie-Georgette, Olaf Verschuren, Maremka Zwinkels, et al. "Effectiveness of a crossover prosthetic foot in active children with a congenital lower limb deficiency: an explorative study." Prosthetics and Orthotics International 44, no. 5 (2020): 305–13. http://dx.doi.org/10.1177/0309364620912063.

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Background: Children with lower limb prostheses cannot always keep up with their peers during active play. A pediatric crossover foot may be a promising prosthetic alternative for children engaging in high-intensity movements necessary for active play. Objectives: To compare children’s walking performance, running performance, experienced competence, and cosmesis using their prescribed prosthesis compared with the crossover foot. Study Design: Pretest-posttest study. Methods: Children with lower limb amputation or deficiency were recruited. Measurements were taken at baseline with the prescrib

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Habecker, Matthew J. "Glass Tracing Alignment Method: A Novel, Low-Cost Coronal and Sagittal Alignment Transfer Method for Lower-Limb Prostheses." JPO Journal of Prosthetics and Orthotics 36, no. 3 (2024): e67-e74. http://dx.doi.org/10.1097/jpo.0000000000000511.

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ABSTRACT Introduction There are numerous ways to transfer the alignment of a lower-limb prosthesis that have been used and adapted over the last several decades. The proposed glass tracing alignment method (GTAM) allows for a convenient and rapid transfer of prosthetic alignment in the coronal and sagittal planes with minimal equipment requirements. Objective The aim of this article is to share a novel method for coronal and sagittal plane prosthetic alignment transfer, which may be done with minimal time, materials, and expense. Materials and Methods Prosthetic alignment may be transferred in

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Kam, A. "40. The evolution of prosthetics." Clinical & Investigative Medicine 30, no. 4 (2007): 49. http://dx.doi.org/10.25011/cim.v30i4.2800.

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Throughout history, prosthetic limbs have undergone significant changes in design and function. For example, an ancient bronze and iron prosthesis with a wooden core, discovered in Italy and dated back to 300 BC, has evolved into a modern shock-absorbing multi-axis prosthetic foot for walking on uneven ground. Recent advances in “neuro-controlled” prosthetics with microprocessor controllers further allow their users to produce smooth, multi-joint movements, simulating “real limbs”. With an increase in government funding focusing on researches in independent mobility, it is expected that new de

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Hawkins, James, Siamak Noroozi, Mihai Dupac, and Philip Sewell. "Development of a Wearable Sensor System for Dynamically Mapping the Behavior of an Energy Storing and Returning Prosthetic Foot." Measurement Science Review 16, no. 3 (2016): 174–82. http://dx.doi.org/10.1515/msr-2016-0021.

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Abstract It has been recognized that that the design and prescription of Energy Storing and Returning prosthetic running feet are not well understood and that further information on their performance would be beneficial to increase this understanding. Dynamic analysis of an amputee wearing a prosthetic foot is typically performed using reflective markers and motion-capture systems. High-speed cameras and force plates are used to collect data of a few strides. This requires specialized and expensive equipment in an unrepresentative environment within a large area. Inertial Measurement Units are

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Wurdeman, Shane R., Phillip M. Stevens, and James H. Campbell. "Mobility analysis of AmpuTees (MAAT 5): Impact of five common prosthetic ankle-foot categories for individuals with diabetic/dysvascular amputation." Journal of Rehabilitation and Assistive Technologies Engineering 6 (January 2019): 205566831882078. http://dx.doi.org/10.1177/2055668318820784.

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Introduction Diabetes and vascular disease represent the most common etiologies for lower limb amputations. In lower limb loss rehabilitation, the prosthetic ankle-foot mechanism is the most common major component needed to restore function. The purpose of this study was to examine the impact of five common prosthetic ankle-foot mechanisms on functional mobility in a large sample of individuals with amputation due to diabetes/dysvascular disease. Methods A retrospective analysis of the Prosthetic Limb Users' Survey of Mobility (PLUS-M®) captured in the patient care setting. A total of 738 indi

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Hansen, Andrew H., Margrit R. Meier, Pinata H. Sessoms, and Dudley S. Childress. "The Effects of Prosthetic Foot Roll-Over Shape Arc Length on the Gait of Trans-Tibial Prosthesis Users." Prosthetics and Orthotics International 30, no. 3 (2006): 286–99. http://dx.doi.org/10.1080/03093640600816982.

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The Shape&Roll prosthetic foot was used to examine the effect of roll-over shape arc length on the gait of 14 unilateral trans-tibial prosthesis users. Simple modifications to the prosthetic foot were used to alter the effective forefoot rocker length, leaving factors such as alignment, limb length, and heel and mid-foot characteristics unchanged. Shortening the roll-over shape arc length caused a significant reduction in the maximum external dorsiflexion moment on the prosthetic side at all walking speeds ( p < 0.001 for main effect of arc length), due to a reduction in forefoot levera

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Talla, Hayder Kareem, Jawad Kadhim Oleiwi, and Abdul Kareem F. Hassan. "Performance of Athletic Prosthetic Feet Made of Various Composite Materials with PMMA Matrix: Numerical and Theoretical Study." Revue des composites et des matériaux avancés 31, no. 4 (2021): 257–64. http://dx.doi.org/10.18280/rcma.310410.

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Prosthetic upgrades are specialized prosthetics that enable patients to participate in more demanding recreational activities, such as running. This study examines the use of prosthetic limbs, specifically the athletic prosthetic foot. The current research focused on the manufacturing and production properties of an samples athletic prosthetic Foot made from composite materials based on a polymethyl methacrylate resin (PMMA) reinforced with various fibers (UHMWPE, Perlon, Carbon fiber, and Glass fiber). The finite element method (ANSYS-19R) is used to build an athletic prosthetic model and app

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Jung, Sungbae, Sunwoo Yuk, Ki-Won Choi, and Sangsoo Park. "Development and Test Application of Guidelines for Evaluating the Usability of Artificial Foot Products." Society for Standards Certification and Safety 14, no. 2 (2024): 1–10. http://dx.doi.org/10.34139/jscs.2024.14.2.1.

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Artificial foot is an assistive device worn by calf or thigh amputees to enable walking. Orthotic prosthesis including artificial foot are internationally classified as medical devices, but in Korea, they are still classified as assistive devices for the disabled rather than medical devices. All medical devices under the the Ministry of Food and Drug Safety regulation are required to conform to the international standard IEC 62366-1 since 2021. However, prosthetic orthotic products such as artificial foot are not classified as medical devices, so their usability test requirement has not yet be

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Cohen-Sobel, E., MA Caselli, and J. Rizzuto. "Prosthetic management of a Chopart amputation variant." Journal of the American Podiatric Medical Association 84, no. 10 (1994): 505–10. http://dx.doi.org/10.7547/87507315-84-10-505.

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The history and prosthetic difficulties of a patient with an unusual Chopart amputation variant have been presented. Although it is possible for the Chopart amputee to walk with just a shoe and filler, this patient does best with a formal prosthesis. The Chopart amputation, which has been surgically stabilized with Achilles tendon lengthening to prevent equinus contractures, can be fitted successfully with a lightweight circumferential plastic or silicone prosthesis or more traditionally with a solid ankle foot orthosis with filler. This partial foot prosthesis is worn with a sturdy shoe with

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Wernke, Matthew M., Evandro M. Ficanha, Zac Thomas, et al. "Mechanical testing of frontal plane adaptability of commercially available prosthetic feet." Journal of Rehabilitation and Assistive Technologies Engineering 9 (January 2022): 205566832211233. http://dx.doi.org/10.1177/20556683221123330.

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Introduction Prosthetic feet have limited adaptability in the frontal plane. Research shows walking on uneven terrain is difficult for many prosthesis users. A new prosthetic foot, the META Arc, was designed with a polycentric ankle joint that allows relatively free movement in the frontal plane to address this limitation. Previous simulations of the polycentric ankle mechanism found potential benefits such as reduced lateral movement of a proximal mass during forward progress and reduced forces being transferred upward from the ground through the foot. Methods Standard mechanical testing prot

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Turner, Anne T., Elizabeth G. Halsne, Joshua M. Caputo, et al. "Prosthetic forefoot and heel stiffness across consecutive foot stiffness categories and sizes." PLOS ONE 17, no. 5 (2022): e0268136. http://dx.doi.org/10.1371/journal.pone.0268136.

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Prosthetic foot stiffness plays a key role in the functional mobility of lower limb prosthesis users. However, limited objective data exists to guide selection of the optimal prosthetic foot stiffness category for a given individual. Clinicians often must rely solely on manufacturer recommendations, which are typically based on the intended user’s weight and general activity level. Availability of comparable forefoot and heel stiffness data would allow for a better understanding of differences between different commercial prosthetic feet, and also between feet of different stiffness categories

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Liabakh, Andrii, Olena Turchin, Tetiana Yevlantieva, and Vasyl Kharchyk. "SYME’S OPERATION IN THE TREATMENT OF GUNSHOT INJURIES OF THE FOOT." ORTHOPAEDICS TRAUMATOLOGY and PROSTHETICS, no. 2 (July 9, 2024): 5–10. http://dx.doi.org/10.15674/0030-5987202425-10.

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Symeʼs operation for gunshot injuries of the foot may be a viable alternative to transtibial amputation. Objective. To analyze the results of the use of Symeʼs operation in patients with gunshot injuries of the foot, to highlight the important points of surgical technique, rehabilitation and prosthetics. Methods.The results of treatment of 12 men with gunshot wounds to the foot aged 23–54 years (mean age (36.1 ± 2.7) years) who underwent Syme surgery were analyzed. All patients were military personnel at the time of injury. Clinical, instrumental and microbiological examinations were used. The

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De Pauw, Kevin, Pierre Cherelle, Bart Roelands, Dirk Lefeber, and Romain Meeusen. "The efficacy of the Ankle Mimicking Prosthetic Foot prototype 4.0 during walking: Physiological determinants." Prosthetics and Orthotics International 42, no. 5 (2018): 504–10. http://dx.doi.org/10.1177/0309364618767141.

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Background: Evaluating the effectiveness of a novel prosthetic device during walking is an important step in product development. Objective: To investigate the efficacy of a novel quasi-passive ankle prosthetic device, Ankle Mimicking Prosthetic Foot 4.0, during walking at different speeds, using physiological determinants in transtibial and transfemoral amputees. Study design: Nonrandomized crossover design for amputees. Methods: Six able-bodied subjects, six unilateral transtibial amputees, and six unilateral transfemoral amputees underwent a 6-min walk test at normal speed, followed by seri

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Debta, Sanghamitra, and Kaushik Kumar. "Design and Analysis of Powered Ankle-Foot Mechanism Using Hydraulic System." Applied Mechanics and Materials 877 (February 2018): 384–90. http://dx.doi.org/10.4028/www.scientific.net/amm.877.384.

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Currently available foot prosthesis model are more than 50 in number. In order to perform some extraordinary errands, for example, strolling, moving, cycling, golfing, swimming, snow skiing or running they are employed. Many are waterproof and made of lightweight materials, for example, plastic, metal combinations and carbon-fiber composites. Prosthetic feet can be essential (unmoving), explained (moving in at least one bearings), or element reaction (putting away and returning vitality when strolling, giving a feeling of "pushing off," much like the human foot). However there are certain prob

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Hernández Martin, John Alexander, Luis Parra Piñero, César Pinzón Pinzón, Oscar Bejarano Peña, Jairo Romero Gutiérrez, and Pedro García Benavides. "Analysis and construction of a prosthetic foot." I+D Tecnológico 14, no. 1 (2018): 76–82. http://dx.doi.org/10.33412/idt.v14.1.1805.

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The assistive devices for people with disabilities are configured as a set of mechanical, electromechanical, orthotic and prosthetic parts designed to assist in the rehabilitation process of patients who suffered amputation of their lower limbs, whether the injury generates The implementation of a transtibial or transfemoral prosthesis these elements must be performed with proper analysis of pre-amputation, amputation and post amputation in order to achieve specific objectives for each patient, achieving the best possible treatment. It is important to ensure that in the treatment of lower limb

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Geil, M. D., and A. Lay. "Plantar foot pressure responses to changes during dynamic trans-tibial prosthetic alignment in a clinical setting." Prosthetics and Orthotics International 28, no. 2 (2004): 105–14. http://dx.doi.org/10.1080/03093640408726695.

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Alignment of a lower limb prosthesis refers to the spatial orientation of the prosthetic components and socket with respect to one another. During the process of dynamic alignment, a prosthetist repeatedly modifies this spatial orientation and observes the amputee's resulting walking pattern, eventually arriving at an alignment that is judged to be optimal. Quantification of the effect of each alignment modification and correlation of the magnitude of modification with the changes in gait could improve understanding of the process and promote an evidential base for practice. This investigation

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Swain, Parthasarathi, Pradipta Patra, and Sonali Mohanty. "Development of an Adjustable Prosthetic Ankle-Foot Adapter: A Prototype." International Journal of Health Sciences and Research 11, no. 10 (2021): 288–93. http://dx.doi.org/10.52403/ijhsr.20211038.

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Prosthetic ankle-foot systems cannot adapt automatically to changes in shoe heel height. These systems can be altered using changes in alignment to properly orient the roll-over shape of the ankle-foot-shoe system. However, these changes require manual adjustments and, with most systems, require tools to make the adjustments. The use of heel-height-adjustable prosthetic ankle-foot systems may be advised for persons who would prefer to use shoes of different heel heights and who understand the necessary alignment changes needed for switching between these shoes. Further work is needed to examin

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Teater, Rachel H., Karl E. Zelik, and Kirsty A. McDonald. "Biomechanical effects of adding an articulating toe joint to a passive foot prosthesis for incline and decline walking." PLOS ONE 19, no. 5 (2024): e0295465. http://dx.doi.org/10.1371/journal.pone.0295465.

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Walking on sloped surfaces is challenging for many lower limb prosthesis users, in part due to the limited ankle range of motion provided by typical prosthetic ankle-foot devices. Adding a toe joint could potentially benefit users by providing an additional degree of flexibility to adapt to sloped surfaces, but this remains untested. The objective of this study was to characterize the effect of a prosthesis with an articulating toe joint on the preferences and gait biomechanics of individuals with unilateral below-knee limb loss walking on slopes. Nine active prosthesis users walked on an inst

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Maikos, Jason T., Alison L. Pruziner, Brad D. Hendershot, et al. "Effects of a Powered Ankle-Foot Prosthesis and Physical Therapy on Function for Individuals With Transfemoral Limb Loss: Rationale, Design, and Protocol for a Multisite Clinical Trial." JMIR Research Protocols 13 (January 26, 2024): e53412. http://dx.doi.org/10.2196/53412.

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Background Powered ankle-foot prosthetic devices can generate net positive mechanical work during gait, which mimics the physiological ankle. However, gait deviations can persist in individuals with transfemoral limb loss because of habit or lack of rehabilitation. Prosthetic research efforts favor the design or evaluation of prosthetic componentry and rarely incorporate any type of rehabilitation, despite evidence suggesting that it is critical for minimizing gait imbalances. Given the accelerated rate of innovation in prosthetics, there is a fundamental knowledge gap concerning how individua

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Sedki, Imad, and Raymond Moore. "Patient evaluation of the Echelon foot using the Seattle Prosthesis Evaluation Questionnaire." Prosthetics and Orthotics International 37, no. 3 (2012): 250–54. http://dx.doi.org/10.1177/0309364612458448.

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Background: The introduction of the Echelon prosthetic foot with a hydraulic self-aligning ankle adds improved adaptability to varied terrains and uneven walking surfaces. However, the specific indications for prescribing such components and the potential benefits are yet to be fully established. Case Description and Methods: Nine amputees including three bilateral amputees evaluated their standard prostheses using the Seattle Prosthesis Evaluation Questionnaire. They were then provided with Echelon feet, and they evaluated them after 4 weeks of use. Findings and Outcomes: Improved satisfactio

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Major, Matthew J., Julia Quinlan, Andrew H. Hansen, and Elizabeth Russell Esposito. "Effects of women’s footwear on the mechanical function of heel-height accommodating prosthetic feet." PLOS ONE 17, no. 1 (2022): e0262910. http://dx.doi.org/10.1371/journal.pone.0262910.

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The loaded mechanical function of transtibial prostheses that result from the clinical assembly, tuning, and alignment of modular prosthetic components can directly influence an end user’s biomechanics and overall mobility. Footwear is known to affect prosthesis mechanical properties, and while the options of footwear are limited for most commercial feet due to their fixed geometry, there exists a selection of commercial prosthetic feet that can accommodate a moderate rise in heel height. These feet are particularly relevant to women prosthesis users who often desire to don footwear spanning a

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Major, Matthew J., David Howard, Rebecca Jones, and Martin Twiste. "The effects of transverse rotation angle on compression and effective lever arm of prosthetic feet during simulated stance." Prosthetics and Orthotics International 36, no. 2 (2012): 231–35. http://dx.doi.org/10.1177/0309364611435996.

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Background and Aim: Unlike sagittal plane prosthesis alignment, few studies have observed the effects of transverse plane alignment on gait and prosthesis behaviour. Changes in transverse plane rotation angle will rotate the points of loading on the prosthesis during stance and may alter its mechanical behaviour. This study observed the effects of increasing the external transverse plane rotation angle, or toe-out, on foot compression and effective lever arm of three commonly prescribed prosthetic feet.Technique: The roll-over shape of a SACH, Flex and single-axis foot was measured at four ext

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Agrawal, Vibhor, Robert Gailey, Christopher O’Toole, Ignacio Gaunaurd, and Adam Finnieston. "Influence of gait training and prosthetic foot category on external work symmetry during unilateral transtibial amputee gait." Prosthetics and Orthotics International 37, no. 5 (2013): 396–403. http://dx.doi.org/10.1177/0309364612473501.

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Background:Prosthetic foot prescription guidelines lack scientific evidence and are concurrent with an amputee’s concurrent with an amputee’s Medicare Functional Classification Level (K-Level) and categorization of prosthetic feet.Objective:To evaluate the influence of gait training and four categories of prosthetic feet (K1, K2, K3, and microprocessor ankle/foot) on Symmetry in External Work for K-Level-2 and K-Level-3 unilateral transtibial amputees.Design:Randomized repeated-measures trial.Methods:Five K-Level-2 and five K-Level-3 subjects were tested in their existing prosthesis during Ses

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Timmermans, Celine, Andrea G. Cutti, Hester van Donkersgoed, and Melvyn Roerdink. "Gaitography on lower-limb amputees: Repeatability and between-methods agreement." Prosthetics and Orthotics International 43, no. 1 (2018): 71–79. http://dx.doi.org/10.1177/0309364618791618.

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Background: Gaitography is gait parametrization from center-of-pressure trajectories of walking on an instrumented treadmill. Gaitograms may be useful for prosthetic gait analyses, as they can be rapidly and unobtrusively collected over multiple gait cycles without constraining foot placement. However, its reliability must still be established for prosthetic gait. Objectives: To evaluate (a) within-method test–retest repeatability and (b) between-methods agreement for temporal gait events (foot contact, foot off) and gait characteristics (e.g. step times, single-support duration). Study design

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Štrbac, Matija, and Dejan B. Popović. "Software Tool for the Prosthetic Foot Modeling and Stiffness Optimization." Computational and Mathematical Methods in Medicine 2012 (2012): 1–8. http://dx.doi.org/10.1155/2012/421796.

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We present the procedure for the optimization of the stiffness of the prosthetic foot. The procedure allows the selection of the elements of the foot and the materials used for the design. The procedure is based on the optimization where the cost function is the minimization of the difference between the knee joint torques of healthy walking and the walking with the transfemural prosthesis. We present a simulation environment that allows the user to interactively vary the foot geometry and track the changes in the knee torque that arise from these adjustments. The software allows the estimatio

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Goujon, H., X. Bonnet, P. Sautreuil, et al. "A Functional Evaluation of Prosthetic Foot Kinematics During Lower-Limb Amputee Gait." Prosthetics and Orthotics International 30, no. 2 (2006): 213–23. http://dx.doi.org/10.1080/03093640600805134.

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This paper reports on a functional evaluation of prosthetic feet based on gait analysis. The aim is to analyse prosthetic feet behaviour under loads applied during gait in order to quantify user benefits for each foot. Ten traumatic amputees (six trans-tibial and four trans-femoral) were tested using their own prosthetic foot. An original protocol is presented to calculate the forefoot kinematics together with the overall body kinematics and ground reaction forces during gait. In this work, sagittal motion of the prosthetic ankle and the forefoot, time-distance parameters and ground reaction f

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Kumarajati, Dhananjaya Yama Hudha. "Design And Analysis of 3D Printable Prosthetic Foot with Honeycomb Structure." APPLIED SCIENCE AND TECHNOLOGY REASERCH JOURNAL 2, no. 2 (2023): 92–99. http://dx.doi.org/10.31316/astro.v2i2.5628.

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This study designs and analyzes a 3D printable prosthetic foot with a honeycomb structure, which has many benefits for prosthetic foot design and analysis. The honeycomb structure can provide high strength and stiffness with low weight and material consumption, variable stiffness and damping properties, and biomimetic structure and function. This study uses 3D printing technology and finite element analysis (FEA) to design and fabricate the prosthetic foot and to evaluate its performance under different loading scenarios. The results show that the prosthetic foot has a satisfactory performance

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Shi, Qiu-Qiong, Kit-Lun Yick, Jinlong Wu, Xujia Huang, Chi-Yung Tse, and Mei-Ki Chan. "A Scientometric Analysis and Visualization of Prosthetic Foot Research Work: 2000 to 2022." Bioengineering 10, no. 10 (2023): 1138. http://dx.doi.org/10.3390/bioengineering10101138.

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This study aims to highlight recent research work on topics around prosthetic feet through a scientometric analysis and historical review. The most cited publications from the Clarivate Analytics Web of Science Core Collection database were identified and analyzed from 1 January 2000 to 31 October 2022. Original articles, reviews with full manuscripts, conference proceedings, early access documents, and meeting abstracts were included. A scientometric visualization analysis of the bibliometric information related to the publications, including the countries, institutions, journals, references,

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Hansen, Andrew. "Effects of Alignment on the Roll-Over Shapes of Prosthetic Feet." Prosthetics and Orthotics International 32, no. 4 (2008): 390–402. http://dx.doi.org/10.1080/03093640802366158.

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Recent work suggests that a prosthetic ankle-foot component's roll-over shape – the effective rocker it conforms to between initial contact and opposite initial contact (the ‘roll-over’ interval of walking) – is closely linked to its final alignment in the prosthesis (as determined by a skilled prosthetist using heuristic techniques). If true, this information may help to determine the appropriate alignment for a lower limb prosthesis before it is built, or a priori. Knowledge is needed for future models that will incorporate the roll-over shape including the relative effect of alignment on th

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Safaeepour, Zahra, Ali Esteki, Farhad Tabatabai Ghomshe, and Mohammad E. Mousavai. "Design and development of a novel viscoelastic ankle-foot prosthesis based on the human ankle biomechanics." Prosthetics and Orthotics International 38, no. 5 (2014): 400–404. http://dx.doi.org/10.1177/0309364613505108.

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Background and aim: In the present study, a new approach was applied to design and develop a viscoelastic ankle-foot prosthesis. The aim was to replicate the intact ankle moment–angle loop in the normal walking speed. Technique: The moment–angle loop of intact ankle was divided into four parts, and the appropriate models including two viscoelastic units of spring-damper mechanism were considered to replicate the passive ankle dynamics. The developed prototype was then tested on a healthy subject with the amputee gait simulator. The result showed that prosthetic ankle moment–angle loop was simi

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Culham, E. G., M. Peat, and E. Newell. "Below-Knee Amputation: A Comparison of the Effect of the Sach Foot and Single Axis Foot on Electromyographic Patterns During Locomotion." Prosthetics and Orthotics International 10, no. 1 (1986): 15–22. http://dx.doi.org/10.3109/03093648609103074.

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The purpose of this investigation was to measure the effect of two terminal prosthetic components, the SACH foot and the single axis foot, on the locomotion patterns of unilateral below-knee amputees. The ten subjects who participated in the study were evaluated on two occasions, once following prescription of a PTB prosthesis and one terminal device and once following its replacement with the second device. The two devices were allocated alternately at the time of prosthetic prescription to ensure that five of the subjects used the SACH foot initially and five used the single axis foot. The e

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Paradisi, Francesco, Anna Sofia Delussu, Stefano Brunelli, et al. "The Conventional Non-Articulated SACH or a Multiaxial Prosthetic Foot for Hypomobile Transtibial Amputees? A Clinical Comparison on Mobility, Balance, and Quality of Life." Scientific World Journal 2015 (2015): 1–10. http://dx.doi.org/10.1155/2015/261801.

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The effects of a non-articulated SACH and a multiaxial foot-ankle mechanism on the performance of low-activity users are of great interest for practitioners in amputee rehabilitation. The aim of this study is to compare these two prosthetic feet and assess possible improvements introduced by the increased degrees of freedom provided by the multiaxial foot. For this purpose, a group of 20 hypomobile transtibial amputees (TTAs) had their usual SACH replaced with a multiaxial foot. Participants’ functional mobility, involving ambulatory skills in overground level walking, ramps, and stairs, was e

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Suresh, A. M. R., Dimple Kashyap, and Tapas Priyaranjan Behera. "Effect of Pre-Prosthetic Training in Balance and Prosthetic Performance in Traumatic Unilateral Trans-Femoral Prosthesis Users in the Age Group of 20-40 Years." International Journal of Health Sciences and Research 11, no. 8 (2021): 91–101. http://dx.doi.org/10.52403/ijhsr.20210814.

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Background: Amputation at the trans-femoral level can be very challenging for the amputee as well for the surgeon, the prosthetist, the physical therapist. Learning to walk after a trans-femoral amputation is many times harder than learning to walk after a trans-tibial amputation. The trans-femoral amputee not only has to learn to use a prosthetic knee but also must learn to coordinate the interaction of the foot components with the prosthetic knee, which requires more mental energy. The trans-femoral amputee has more difficulty with balance and decreased proprioception and therefore a greater

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Miller, Taavy A., James H. Campbell, Dwiesha L. England, Phillip M. Stevens, and Shane R. Wurdeman. "OASIS 2: Mobility differences with specific prosthetic feet across procedure codes." Journal of Rehabilitation and Assistive Technologies Engineering 9 (January 2022): 205566832211016. http://dx.doi.org/10.1177/20556683221101623.

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Introduction Recently, many prosthetic devices were subjected to reimbursement coding review. Several prosthetic feet that were historically coded with the shock-attenuating function were recoded. The purpose of this analysis was to compare patient-reported functional mobility across a range of prosthetic feet using real-world clinical outcomes data. Methods A retrospective, observational review. A univariate generalized linear model was used to assess mobility across foot categories and between different prosthetic feet coded as L5987 or L5981. Results The final sample analyzed comprised of 5

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Mrozek-Czajkowska, Agata, and Tomasz Stręk. "Design Optimization of the Mechanics of a Metamaterial-Based Prosthetic Foot." Materials 18, no. 1 (2024): 96. https://doi.org/10.3390/ma18010096.

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This paper is dedicated to the analysis of a foot prosthesis optimization process, with a particular focus on the application of optimization algorithms and unconventional materials, such as auxetic materials. The study aims to enhance prosthesis performance by minimizing the difference between the ground reaction force generated by the prosthetic foot and that of a natural limb. In the initial part of the study, the basic topics concerning the parameterization of the foot prosthesis geometry and the preparation of a finite element model for human gait are discussed. In the subsequent part of

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Wardoyo, Christianus Pigun, Muslim Mahardika, Suyitno Suyitno, Rini Dharmastiti, Urip Agus Salim, and Budi Arifvianto. "FABRIKASI DAN PENGUJIAN TELAPAK KAKI PALSU JENIS SINGLE AXIS." Jurnal Rekayasa Mesin 15, no. 3 (2024): 1331–42. https://doi.org/10.21776/jrm.v15i3.1622.

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Along with the increasing number of persons with disabilities, the need for prosthetic foot has also increased. However, the irony is that some of the products circulating in Indonesia are still imported from abroad, while the domestic product is quite limited and possesses some drawbacks. This study aims to study the production process of the single axis type of the right-side prosthetic foot as well as to evaluate the performance of this product. The prosthetic foot in this research was made from thermoplastic polyurethane (TPU) resin and prepared with casting by pouring it into a pre-fabric

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