Customized Insole Fabrication for Foot Deformities in Leprosy Patients1

Paul, Sathish Kumar; Vijayakumar, Rekha; Sivarasu, Sudesh

doi:10.1115/1.4027065

Cited by 6 publications

(6 citation statements)

References 3 publications

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“…Computed Tomography (CT) images of a foot in the subtalar neutral position were used to create a realistic foot model ideal for the foot insole. 16 Then the foot-insole assembly was created on CAD and exported to ANSYS for simulation.…”

Section: Methodsmentioning

confidence: 99%

“…Analysis of the insoles made from Isoprene, Butyl Rubber, Polyurethane, Neoprene, Micro Cellular Rubber, Ethylene Vinyl Acetate and Natural Rubber were carried out through constant loading geometric and meshing properties. 17 The mechanical properties, such as elasticity, stress, strain and deformation of each material were analysed on the designed insole.…”

Section: Methodsmentioning

confidence: 99%

“…Evidence demonstrates that among the materials, the one with the lowest elastic modulus has the highest elastic property. [18][19][20]…”

Section: Methodsmentioning

confidence: 99%

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Material analysis for therapeutic insoles — A short report

Paul¹,

Kumar²,

Siva³

2021

LEPROSY

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Customized footwear with appropriate insole material for offloading is widely used for preventing ulceration in diabetic and leprosy affected patients. Methods: Computer based finite element analysis was carried out on a 3 dimensionally modelled insole. The insole was tested with the boundary condition of constant geometry, constant loading and varied material properties to identify the biomechanical behaviour of material. Results: A total of 7 commonly used insole rubber materials including Butyl Rubber, Ethylene Vinyl Acetate (EVA), Isoprene, Natural Rubber, Neoprene, Polyurethane and Micro Cellular Rubber (MCR) were tested using finite element analysis. The study exhibited low deformation and stress values for EVA. High deformation and stress values were seen in MCR. Conclusion:The comparison of insole materials provides health workers with the required knowledge for selection of appropriate material for therapeutic insoles. The mechanical analysis of materials through the computer aided analysis will help the therapeutic footwear technician and designer to design, fabricate and use appropriate insoles.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Material analysis for therapeutic insoles — A short report

Paul¹,

Kumar²,

Siva³

2021

LEPROSY

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“…The designed insole model was then exported to the computer aided analysis software (ANSYS) to carry out simulation. Simultaneously, Computed Tomography (CT) images of the foot in the subtalar neutral positionto createa realistic foot model ideal for providing a foot insole [13]. Then foot-insole assembly was created on CAD and exported to ANSYS for simulation.…”

Section: Methodsmentioning

confidence: 99%

Material Analysis for Therapeutic Insoles

Paul

Kumar

Siva

2020

Preprint

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Background: Customized footwear with appropriate insole material for offloading is widely used for preventing ulceration indiabetic and leprosy affected patients.Methods: Finite element analysis was carried outon a 3 dimensionally modelledinsole. The insole was tested with the boundary condition of constant geometry, constant loading and varied material properties to identify the biomechanical behaviour of material.Results: The study demonstrates that Ethylene Vinyl Acetate and Micro Cellular Rubber reduce the elevated plantar pressure significantly in comparison to the other materials commonly used in fabricating foot orthosis.Conclusion: The comparison of the insole materials provides the health worker the required knowledge for selection of appropriate material for therapeutic insoles. The mechanical analysis of materials through the computer aided analysis would help therapeutic footwear designer to design, fabricate and use appropriate insoles.

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“…The 3-dimensional fabrication of insoles was found to be effective in offloading the foot, although initial investments are required for acquiring data. 10,11 There is evidence that repeated or prolonged use of the traditional offloading devices like the TCC and MDRS often lead to undesirable social and medical consequences and are sometimes not preferred even by health workers. 12,13 The other disadvantage with the existing offloading devices is that they are heavy and cumbersome to wear.…”

Section: Introductionmentioning

confidence: 99%

Computer designed orthotic device for offloading plantar ulcers—Technical paper

Kumar

Paul

Siva

2021

LEPROSY

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Introduction: Plantar ulcers occur in patients with peripheral arterial disease or peripheral neuropathy. Plantar ulcers resulting from the peak plantar pressures often lead to disabilities and even amputations. Using an appropriate offloading device would reduce peak plantar pressures and prevent ulcers.Objectives: To design and analyze a customized lightweight offloading device that will improve patient compliance and provide good aesthetic value, without compromising on efficacy. Computer Aided Design (CAD) software SOLIDWORKS was used to design two different 3-dimensional models of offloading devices. The light weight, energy efficient and cosmetically appealing offloading devices could be a replacement for the traditional offloading devices made of Plaster of Paris, which are bulky and unappealing, leading to poor compliance. Results: The computer simulation studies have established the efficacy of the new designs in offloading the foot. Conclusion:The developed designs could be an ideal replacement for traditional offloading devices like the Bohler iron. The designs could improve the user's compliance and acceptance without compromising on the efficacy. These designs need to be field tested.

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Customized Insole Fabrication for Foot Deformities in Leprosy Patients1

Cited by 6 publications

References 3 publications

Material analysis for therapeutic insoles — A short report

Material analysis for therapeutic insoles — A short report

Material Analysis for Therapeutic Insoles

Computer designed orthotic device for offloading plantar ulcers—Technical paper

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