The bouncing mechanism of running in a transfemoral amputee wearing a blade prosthesis

Mauroy, Geoffrey; Jaeger, Dominique De; Vanmarsenille, Jean-Marie; Willems, Patrick

doi:10.1080/10255842.2012.713721

Cited by 7 publications

(3 citation statements)

References 3 publications

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“…This observation is most likely the result of pre-tensioning within the muscles and ligaments of the limb during relatively high-speed activities, and is supported by the finding that running speed is linearly associated with limb stiffness [19]. Mauroy and colleagues [20], measuring blade prosthesis properties in transfemoral amputees also showed that not only does the stiffness of a prosthetic blade change with increasing running speed, but that the stiffness of the limb muscles (hip muscles) increased too.…”

Section: Discussionmentioning

confidence: 87%

A non-Invasive Assessment of Ground Reaction Forces in the Human Leg in Response to Walking, Jogging, Running and Jumping

Pingel¹,

Harrison²

2020

OJO

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Running is one of the most popular forms of exercise. Even though regular exercise is beneficial to human health, running is also often associated with an increased risk of injury. Lack of shock absorption in running shoes has often been stated as one of the main reasons for why running-related injuries have been on the increase. The aim of the present study was to assess the degree to which ground reaction forces (GRF) can be dissipated in the human leg in a barefoot subject, in connection with diverse physical activities. Acoustic myography (AMG), a non-invasive technique that records pressure waves from contracting muscles as well as the harmonic damping of ligaments, was applied to four anatomical sites on the subject's leg, during barefoot walking, jogging, running and jumping. The data for walking on a hard surface show much lower ESTi TM parameters than those for the soft surface, and these lower values are observed mainly for sites 1 (toes; 65%) and 2 (ankle; 53%), respectively. AMG parameters for jogging reveal this gait to have very low ES-Ti TM parameters for site 1 and site 2 (ESTi 2-3), yet similar for both surfaces. The data for running on a hard and soft surface revealed much lower ESTi TM parameters (38%) than those for sites 3 (knee) and 4 (hip). The data from the big jump, reveal that on a hard surface, the lowest ESTi TM parameters were for sites 1 (toes; 46%) and 2 (ankle; 27%), compared to values on a soft surface. The speed with which GRFs were transmitted up the leg varied from site to site and also with the type of activity, ranging from undetectable to approx. 60 m/sec. The present study reveals that the ankle joint is exposed to the greatest forces during jumping and running. In addition, this study has confirmed that exercising on a hard surface does indeed increase the stress forces on the toes and ankles. It is interesting to note that the data reveal that toes and ankles absorb most of the GRF during running, while the knee and hip How to cite this paper:

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Section: Discussionmentioning

confidence: 87%

A non-Invasive Assessment of Ground Reaction Forces in the Human Leg in Response to Walking, Jogging, Running and Jumping

Pingel¹,

Harrison²

2020

OJO

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“…Metals and other alloys are currently being used to make prostheses for modern sports that imitate the functions of a real human limb (Hagberg et al, 2005;Jayaraman et al, 2019;Krausz and Hargrove, 2019;Parga and Yu, 2019;Villarreal and Gregg, 2019;Damerla et al, 2022;Gomez-Correa and Cruz-Ortiz, 2022). Artificial limbs are more expensive than mechanical prostheses, which is a disadvantage for lower-middle-class economies because they will not be able to afford such high prices (Mauroy et al, 2012;Devaraj et al, 2020;Migliore et al, 2020;Powell et al, 2020). Nevertheless, they provide necessary features and help close the gap between mechanical and automated prostheses.…”

Section: Introductionmentioning

confidence: 99%

Static Behavior of a Prosthetic Running Blade Made from Alloys and Carbon Fiber

Siddiqui¹,

Arifudin²,

Alnaser³

et al. 2023

Journal of Disability Research

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Prosthetic running blades offer a solution for individuals with disabilities to engage in sports, benefiting them both psychologically and physiologically. Furthermore, a good prosthetic running blade in terms of performance and cost is rarely available to all disabled persons. In this study, we have examined how various materials impact the static behavior of the prosthetic running blade. A finite element numerical analysis was conducted on a prosthetic design to investigate this effect. We have used different materials for investigation such as aluminum alloy (2024 T4), stainless steel (AISI 316), carbon fiber, and titanium alloy (grade 5), under different load conditions. The load conditions have been varied mainly to three conditions, namely, rest (700 N), walking (1400 N), and running (2100 N). In our experimental design, we studied total deformation, equivalent stress, and strain energy to understand the performance based on material choice. It was noticed that the aluminum alloy (2024 T4) blade goes under much deformation when compared to titanium- and carbon fiber-made running blades. The least amount of overall deformation occurs in carbon fiber under varying load conditions. Carbon fiber appears to be the most profitable option due to its lowest cost per running blade. Titanium alloy grade 5, carbon fiber, AISI 316 stainless steel, and aluminum 2024 T4 alloy cost a total of 78.1, 48.5, 67.6, and 20.9 USD, respectively. It is evident that titanium alloy materials carry a higher price compared to alternative materials.

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“…It has been observed from the literature that composites, metal, and alloys have been used to manufacture prosthetic running blades (Hagberg et al, 2005;Jayaraman et al, 2019;Krausz and Hargrove, 2019;Parga and Yu, 2019;Villarreal and Gregg, 2019;Damerla et al, 2022;Gomez-Correa and Cruz-Ortiz, 2022). In recent years, some manufacturers are enabling sports persons to engage in their preferred sports events, by using novel advanced materials and utilizing cutting-edge technologies (Jönsson et al, 2011;Mauroy et al, 2012;Devaraj et al, 2020;DeVillez et al, 2022). Patients can participate in more demanding recreational activities such as jogging thanks to specialized prosthetics known as prosthetic improvements.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation on the Performance of Prosthetic Running Blades by Using Different Materials

Siddiqui

Arifudin

Alnaser

et al. 2023

Journal of Disability Research

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The amputation of a lower limb for humans is one of the most traumatic experiences, both physically and emotionally. Prosthetic running blades provide disabled persons with an opportunity to participate in sports and thus help to improve their psychological health. They also allow them to participate in activities that were previously unavailable to them due to financial constraints. In the current study, we looked at how different materials affected the functionality of prosthetic running blades. We investigated the static behavior of a prosthetic running blade using finite element modeling. Under various load circumstances, we conducted numerical simulation using a variety of materials, including titanium alloy (grade 5), carbon fiber, stainless steel (AISI 316), and aluminum alloy (2024 T4). We studied three major load conditions: rest (700 N), walking (1400 N), and running (2200 N). To understand the performance depending on the selection of materials, we evaluated total deformation, equivalent stress, and strain energy in the design of our experiment. The titanium alloy is more durable and has a higher tensile strength. The high cost of manufacture for titanium alloy, however, is a major deterrent to its use in running blades. It was noticed that the aluminum alloy (2024 T4) blade goes under much deformation as compared to titanium and carbon fiber-made running blades. Furthermore, carbon fibers offer excellent mechanical properties, which are essential for creating running blades. It has outstanding tensile properties. Additionally, the low density of carbon fiber has the added advantage of making running blades lighter.

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The bouncing mechanism of running in a transfemoral amputee wearing a blade prosthesis

Cited by 7 publications

References 3 publications

A non-Invasive Assessment of Ground Reaction Forces in the Human Leg in Response to Walking, Jogging, Running and Jumping

A non-Invasive Assessment of Ground Reaction Forces in the Human Leg in Response to Walking, Jogging, Running and Jumping

Static Behavior of a Prosthetic Running Blade Made from Alloys and Carbon Fiber

Numerical Investigation on the Performance of Prosthetic Running Blades by Using Different Materials

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