Assessment of Socket Pressure during Walking in Rapid Fit Prosthetic Sockets

Sasaki, Kazuhiko; Guerra, Gary; Phyu, Win Lei; Chaisumritchoke, Sirarat; Sutdet, Prawina; Kaewtip, Sirintip

doi:10.3390/s22145224

Cited by 4 publications

(3 citation statements)

References 30 publications

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“…There were two trials for each liner and a 5 min rest for each trial. Forty data steps were used to analyse the pressure distribution [ 30 ]. After the 2-min walking test, the subjects were asked to rate the comfort of the socket using the SCS.…”

Section: Methodsmentioning

confidence: 99%

The AERO prosthetic liner: socket pressure distribution, comfort and material composition

Miyata,

Sasaki,

Guerra

et al. 2024

Annals of Medicine

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Purpose This study aimed to evaluate the pressure distribution and comfort of transtibial prosthesis wearers using an affordable ethyl-vinyl acetate (EVA) roll-on (AERO) liner. Method Fifteen unilateral transtibial prosthesis users wore patella tendon bearing (PTB) sockets with a polyethylene foam (PE-lite) liner were enrolled this study. AERO liners were provided to all participants. Six force sensors were applied to the residual limb to evaluate pressure distribution during treadmill walking, and the socket comfort score (SCS) was used to evaluate comfortability. Fourier transform infrared (FT-IR) spectroscopy was performed on the EVA and PE-lite liners. Results Eleven participants used prefabricated AERO liners and four participants used custom-made AERO liners. The pressure distribution was analysed by the coefficient of variation (CV): PE-lite was 75.7 ± 6.0 and AERO liner 83.3 ± 4.1. Residual limb pressure was significantly decreased when using the AERO liner ( p = .0007), with a large effect size ( r = 0.87). Mean SCS was 7.5 ± 1.3 and 8.9 ± 1.1 for PE-lite and AERO liner respectively. Conclusion Better pressure distribution and comfort were observed when the participants used the AERO liner. AERO had a greater proportion of calcium carbonate (CaCO 3 ). These findings suggest that the AERO liner is a better off-the-shelf option for persons using traditional prosthetic sockets and liners.

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Section: Methodsmentioning

confidence: 99%

The AERO prosthetic liner: socket pressure distribution, comfort and material composition

Miyata,

Sasaki,

Guerra

et al. 2024

Annals of Medicine

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“… Major applications of multimodal human–robot interaction (Hahne et al, 2020 ; Kavalieros et al, 2022 ; Mocan et al, 2022 ; Pawuś and Paszkiel, 2022 ; Sasaki et al, 2022 ). …”

Section: Techniques For Multimodal Human–robot Interactionmentioning

confidence: 99%

Recent advancements in multimodal human–robot interaction

Yang

et al. 2023

Front. Neurorobot.

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Robotics have advanced significantly over the years, and human–robot interaction (HRI) is now playing an important role in delivering the best user experience, cutting down on laborious tasks, and raising public acceptance of robots. New HRI approaches are necessary to promote the evolution of robots, with a more natural and flexible interaction manner clearly the most crucial. As a newly emerging approach to HRI, multimodal HRI is a method for individuals to communicate with a robot using various modalities, including voice, image, text, eye movement, and touch, as well as bio-signals like EEG and ECG. It is a broad field closely related to cognitive science, ergonomics, multimedia technology, and virtual reality, with numerous applications springing up each year. However, little research has been done to summarize the current development and future trend of HRI. To this end, this paper systematically reviews the state of the art of multimodal HRI on its applications by summing up the latest research articles relevant to this field. Moreover, the research development in terms of the input signal and the output signal is also covered in this manuscript.

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“…The prosthesis is divided into several parts (inner soft socket, outer hard socket, ring for connection to the myoelectrical hand, etc.). The purpose of the designed outer socket is to connect the inner socket with the functional elements of the prosthesis, to protect the stump and the internal mechanical or electrical parts of the prosthesis, and to provide a cosmetic or design replacement with an emphasis on the individual needs of the patient [11,12]. All of these requirements are suitable for the use of new 3D printing technologies, but the exact construction and design process needs to be verified and validated in collaboration with patients [13].…”

Section: Introductionmentioning

confidence: 99%

Parametric Production of Prostheses Using the Additive Polymer Manufacturing Technology Multi Jet Fusion

Ráž,

Chval,

Kemka

2024

Materials

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This study aims to develop a procedure for the production of 3D-printed forearm prostheses (especially hard outer sockets). The production procedure is designed in the form of a parametric workflow (CAD model), which significantly speeds up the designing process of the prosthesis. This procedure is not fixedly dependent on the software (SW) equipment and is fully transferable into another SW environment. The use of these prostheses will significantly increase the comfort of their patients’ lives. It is possible to produce prostheses faster and in larger amounts and variants by the usage of additive technology. The input for the own production of the prosthesis is a model of the internal soft socket of the patient. This soft socket (soft bed) is made by a qualified prosthetist. A 3D-scanned CAD model is obtained afterward using the scanning method by an automatic laser projector. An editable, parametric external socket (modifiable in any CAD format) is generated from the obtained 3D scan using a special algorithmic model. This socket, after the necessary individual modifications, is transferred to 3D printing technology and produced using powder technology Multi Jet Fusion (HP MJF). The result of the designed and tested procedure is a quickly editable 3D-printed outer socket (main part of prosthesis), which is able to fully replace the current long-fiber composite solution. Production of current solutions is relatively time-consuming, and only one piece is produced in a given time. The newly designed technology eliminates this. This study summarized the possibilities of speeding up the production of forearm prostheses (but not only these) by creating a parametric CAD model that is applicable to different patients.

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Assessment of Socket Pressure during Walking in Rapid Fit Prosthetic Sockets

Cited by 4 publications

References 30 publications

The AERO prosthetic liner: socket pressure distribution, comfort and material composition

The AERO prosthetic liner: socket pressure distribution, comfort and material composition

Recent advancements in multimodal human–robot interaction

Parametric Production of Prostheses Using the Additive Polymer Manufacturing Technology Multi Jet Fusion

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