Benefits of 3D Printed and Customized Anatomical Footwear Insoles for Plantar Pressure Distribution

Jandová, Soňa; Mendřický, Radomír

doi:10.1089/3dp.2021.0002

Cited by 18 publications

(16 citation statements)

References 20 publications

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“…2,11 At the same time, this analytical study recognized 3D printed insoles as successful in alleviating pain with an increase in the feeling of comfort (comfort score 3,6,20,21,28 ) and a possible effect on foot biomechanics. 1,4,6,18,20 The research results show that the insole should be flexible in the most stressed areas 1,9 and provide optimal support 9 in the longitudinal arch, 1,6 which can also be achieved with the porous structure inside the insole. 5 Previous studies mainly focus on insoles composed from different materials and components; 3,8,15,28 only a few are made from one material.…”

Section: Introductionmentioning

confidence: 95%

“…3 An insole must bear the oftenextreme loads 3,8,9 in athletes. 1,12,[15][16][17][18] Therefore, comfort evaluation is essential 8 because the perception of poor comfort 6 may lead to poor user compliance. 30,31 Other crucial things are the correct shoe size, adequate space 19 for the exact insole inside, which is in contact 5,8,18 with the foot during all dynamic and postural movements, 9 such as standing, walking, and running.…”

Section: Introductionmentioning

confidence: 99%

“…5, It is precisely for this purpose that digitizing dimensions is of great importance. 1,12 Several studies 1,3,6,15,[18][19][20] have investigated whether 3D-printed CMIs can reduce metatarsal pressure by distributing it over the midfoot. 3,12 They reported a reduction in damage to symptomatic flat feet.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

3D Printing of Individual Running Insoles – A Case Study

Danko,

Sekac,

Dzivakova

et al. 2023

ORR

View full text Add to dashboard Cite

show abstract

“…Insoles utilizing 3Dprinting technology have been developed, incorporating plantar pressure sensor arrays [18] while Li et al [19] investigated the therapeutic effect of 3D-printed individualized heel cups. Researchers discovered that the utilization of custom-made insoles had a substantive impact on pressure distribution in individuals with either flat or high-arched feet [20]. Wang et al [21] reported positive effects of 3D-printed insoles in treating flatfoot.…”

Section: Introductionmentioning

confidence: 99%

3D Printed customized diabetic foot insoles with architecture designed lattice structures – a case study

Kumar,

Sarangi

2023

Biomed. Phys. Eng. Express

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This study proposes a 3D printed, custom insole using an architectural lattice structure infill targeting diabetic patients at risk of foot ulcers. An analysis of five lattice configurations: Fluorite, Kelvin, Octet, Isotruss unit cells, and Truncated Octahedron was conducted to identify the most effective insole infill for plantar pressure and weight redistribution. The Kelvin lattice demonstrated minimal stiffness, suggesting its superiority in balancing plantar pressure and weight. Such lattice-structured insoles offer enhanced foot support and cushioning, crucial for ulcer-prone individuals. This research innovatively employs architectural lattice structures in designing insoles for diabetic patients, offering an insightful comparison of lattice designs for optimized foot care.

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“…Personalized customization may solve these problems as a customized wearable product is designed precisely based on the body contour and bio-mechanical characteristics of the specific customer, leading to best fitting experience than others. The customized insoles for elite basketball athletes are good examples [1]. Those specifically designed insoles only fit perfectly to their owners.…”

Section: Introductionmentioning

confidence: 99%

Body-temperature programmable ultra-soft shape memory elastomers for comfort fitting

Yin

Wang²,

Shen³

et al. 2022

Smart Mater. Struct.

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Shape memory materials can be utilized to realize fast shape customization for personalized comfort fitting experiences. In this paper, a series of body-temperature programmable shape memory elastomers are developed for comfort fitting. Unlike the reported ones, in which the shape switch is realized due to body-temperature phase transition (around 37 oC), these newly developed ones are fabricated with silicone rubber (as elastic component) and a kind of polycaprolactone (PCL, as transition component) that has melting point of about 56 oC and much lower crystallization temperature. The thermal properties, shape memory performances, mechanical behaviors under uni-axial tension at room temperature and at human body temperature (37 oC) are investigated. The specialty of these shape memory elastomers is that the programming is not carried out at around melting point of the transition component. Instead, it could be done upon cooling to 37 oC. The temporary shape is fixed only after completion of PCL crystallization. As the melting point of PCL is much higher (56 oC), the mechanical properties of these shape memory elastomers are ensured rather stable near 37 oC, which eliminates the concern of shaping/fitting failure when ambient temperature fluctuates. Besides, ultra-softness and high stretchability at room temperature are revealed as well. Excellent shape memory performance of these elastomers at 37 oC is also confirmed. The shape fixity ratio is over 90% when PCL content reaches wt% of 35%. In such a way, these elastomers are able to well duplicate the local shapes of human body in actual fitting. Upon reheating to 80 oC, they also can completely recover to their original shapes. The fitting time window at 37 oC is revealed around 5 minutes, which is rather appropriate in practice. The yielding behaviors during tension and long-term shaping/fitting performance of these elastomers are also discussed. A simple wearable orthotic device for hallux valgus is developed for proof-of-concept. It is concluded that these newly developed shape memory elastomers are well suited candidates for comfort fitting.

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Benefits of 3D Printed and Customized Anatomical Footwear Insoles for Plantar Pressure Distribution

Cited by 18 publications

References 20 publications

3D Printing of Individual Running Insoles – A Case Study

3D Printing of Individual Running Insoles – A Case Study

3D Printed customized diabetic foot insoles with architecture designed lattice structures – a case study

Body-temperature programmable ultra-soft shape memory elastomers for comfort fitting

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