Research and development of 3D printing orthotic insoles and preliminary treatment of leg length discrepancy patients

Wang, Kai; Lu, Chunhua; Ye, Rongju; He, Wen; Wei, Xiating; Li, Yuan; Pan, Xiaolin; Zhao, Chen; Yu, Xian‐Min

doi:10.3233/thc-202170

Cited by 11 publications

(4 citation statements)

References 22 publications

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“…Foot scan of neutral calcaneal position. 3,7,22 3D scanning was performed with an Artec Eva handheld 3D scanner (Artec, USA)used software algorithms: 36 tracking Geometry+Texture, visualization of color distance, and Auto-align new scan. Feet capturing (Figure 2): (1) The standing-on-one-leg posture.…”

Section: D Foot Scanmentioning

confidence: 99%

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3D Printing of Individual Running Insoles – A Case Study

Danko,

Sekac,

Dzivakova

et al. 2023

ORR

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The study's starting point is to find a low-cost and best-fit solution for comfortable movement for a recreational runner with knee pain using an orthopedic device. It is a case study. The research aims to apply digitization, CAD/CAM tools, and 3D printing to create an individual 3D running insole. The objective is to incorporate flexible shape optimization would provide comfort reductions in foot plantar pressures in one subject with knee pain while running. The test hypothesis was if it is possible to make it from one material. For this purpose, we created a new digital workflow based on the Decision Tree method and analyzed pain and comfort scores during user testing of prototypes. Patient and Methods: The input data were obtained during a professional examination by a specialist doctor in the orthopedic outpatient clinic in the motion laboratory (DIERS 4D Motion Lab, Germany) with the output of data on the proband's complex movement stereotype. Surface and volumetric data were obtained in the biomedical laboratory with the 3D scanner. We modified the digital 3D foot models in 3D mesh software, developed the design in SW Gensole (Gyrobot, UK), and finally incorporated the internal structure and the surface layer of the insole data of the knowledge from the medical examination, comfort analyses, and scientific studies findings. Results: Four complete 3D-printed prototypes (n=4) with differences in density and correction elements were designed. All of them were fabricated on a 3D printer (Prusa i3 MK3S, Czech Republic) with flexible TPU material suitable for skin contact. The Participant tested each of them five times in the field during a workout and final insoles three months on the routine training. Conclusion: A novel workflow was created for designing, producing, and testing full 3D-printed insoles. The product is fit for immediate use.

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Section: D Foot Scanmentioning

confidence: 99%

“…The pelvis is neutral, hands are freely released, and the participant looks ahead. 22 The measured ankle hangs over the edge of the chair. (Figure 2).…”

Section: D Foot Scanmentioning

confidence: 99%

3D Printing of Individual Running Insoles – A Case Study

Danko,

Sekac,

Dzivakova

et al. 2023

ORR

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show abstract

“…16. This material has proved to be suitable for the 3D printing of insoles, since it has an optimal resistance to elongation and abrasion as well as a high tensile strength (Wang et al 2020). These properties make Filaflex 82A a perfect material for the production of flexible, comfortable and resistant insoles.…”

Section: Manufacturing Feasibility Evaluationmentioning

confidence: 99%

Design of cellular materials for multiscale topology optimization: application to patient-specific orthopedic devices

Ferro

Perotto

Bianchi

et al. 2022

Struct Multidisc Optim

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A flexible problem-specific multiscale topology optimization is introduced to associate different areas of the design domain with diverse microstructures extracted from a dictionary of optimized unit cells. The generation of the dictionary is carried out by exploiting micro-SIMP with AnisoTropic mesh adaptivitY (microSIMPATY) algorithm, which promotes the design of free-form layouts. The proposed methodology is particularized in a proof-of-concept setting for the design of orthotic devices for the treatment of foot diseases. Different patient-specific settings drive the prototyping of customized insoles, which are numerically verified and successively validated in terms of mechanical performances and manufacturability.

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“…The 3D-printed element has been widely accepted and utilized in many sensory applications. For example, 3D-printed polymer packages have been embedded to protect long period fiber Bragg gratings (LPG) stress and temperature sensors [ 24 , 25 , 26 , 27 ] and tapered optical fiber for humidity and gas sensing [ 28 ]. Helical distributed feedback FBG and rocking filters have also been written in a fibers fabricated from a 3D printed glass preform [ 29 ].…”

Section: Introductionmentioning

confidence: 99%

Low-Cost 3D Printer Drawn Optical Microfibers for Smartphone Colorimetric Detection

et al. 2022

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A fused deposition modeling (FDM) 3D printer extruder was utilized as a micro-furnace draw tower for the direct fabrication of low-cost optical fibers. An air-clad multimode microfiber was drawn from optically transparent polyethylene terephthalate glycol (PETG) filament. A custom-made spooling collection allows for an automatic variation of fiber diameter between ϕ ∼ 72 to 397 μm by tuning the drawing speed. Microstructure imaging as well as the 3D beam profiling of the transmitted beam in the orthogonal axes was used to show good quality, functioning microfiber fabrication with uniform diameter and identical beam profiles for orthogonal axes. The drawn microfiber was used to demonstrate budget smartphone colorimetric-based absorption measurement to detect the degree of adulteration of olive oils with soybean oil.

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Research and development of 3D printing orthotic insoles and preliminary treatment of leg length discrepancy patients

Cited by 11 publications

References 22 publications

3D Printing of Individual Running Insoles – A Case Study

3D Printing of Individual Running Insoles – A Case Study

Design of cellular materials for multiscale topology optimization: application to patient-specific orthopedic devices

Low-Cost 3D Printer Drawn Optical Microfibers for Smartphone Colorimetric Detection

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