Plantar pressure relief under the metatarsal heads – Therapeutic insole design using three-dimensional finite element model of the foot

Chen, Wen Ming; Lee, Sung–Jae; Lee, Peter Vee Sin

doi:10.1016/j.jbiomech.2014.12.043

Cited by 61 publications

(46 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After model preparation in the ANSYS DesignModeler, the ANSYS Workbench 18.2 static structural module (ANSYS, Inc., Canonsburg, PA, USA) was employed to simulate the footwear traction performance. Footwear is normally manufactured using very compressible rubber-like materials that can be modelled by a hyperelastic material model, and a strain-energy function is needed to describe their mechanical behavior [15][16][17][18][19][20]. In the current study, an Ogden foam second-order material model was used for the footwear, and the values of the elastomeric Ogden foam parameters are shown in Table 1 [21].…”

Section: Finite Element Modelmentioning

confidence: 99%

A Biomechanical Investigation of Athletic Footwear Traction Performance: Integration of Gait Analysis with Computational Simulation

et al. 2020

View full text Add to dashboard Cite

Evaluations are vital to quantify the functionalities of athletic footwear, such as the performance of slip resistance, shock absorption, and rebound. Computational technology has progressed to become a promising solution for accelerating product development time and providing customized products in order to keep up with the competitive contemporary footwear market. In this research, the effects of various tread pattern designs on traction performance in a normal gait were analyzed by employing an approach that integrated computational simulation and gait analysis. A state-of-the-art finite element (FE) model of a shoe was developed by digital sculpting technology. A dynamic plantar pressure distribution was automatically applied to interpret individualized subject conditions. The traction performance and real contact area between the shoe and the ground during the gait could be characterized and predicted. The results suggest that the real contact area and the structure of the outsole tread design influence the traction performance of the shoe in dry conditions. This computational process is more efficient than mechanical tests in terms of both cost and time, and it could bring a noticeable benefit to the footwear industry in the early design phases of product development.

show abstract

Section: Finite Element Modelmentioning

confidence: 99%

A Biomechanical Investigation of Athletic Footwear Traction Performance: Integration of Gait Analysis with Computational Simulation

et al. 2020

View full text Add to dashboard Cite

show abstract

“…A metatarsal support significantly improves peak pressure reduction at the metatarsal heads. 10,19,[27][28][29][30][31][32][33][34][35][36][37][38] • Use a transmetatarsal bar that covers all metatarsal heads as support. 30 A metatarsal pad or dome can be used if only one metatarsal region shows (signs of) high pressure, or is a previous ulcer site.…”

Section: Metatarsal Supportmentioning

confidence: 99%

State of the art design protocol for custom made footwear for people with diabetes and peripheral neuropathy

Bus

Zwaferink

Dahmen

et al. 2019

Diabetes Metabolism Res

View full text Add to dashboard Cite

Supported by evidence‐based guidelines, custom‐made footwear is often prescribed to people with diabetes who are at risk for ulceration. However, these guidelines do not specify the footwear design features, despite available scientific evidence for these features. We aimed to develop a design protocol to support custom‐made footwear prescription for people with diabetes and peripheral neuropathy. The population of interest was people with diabetes who are at moderate‐to‐high risk of developing a foot ulcer, for whom custom‐made footwear (shoes and/or insoles) can be prescribed. A group of experts from rehabilitation medicine, orthopaedic shoe technology (pedorthics) and diabetic foot research, reviewed the scientific literature and met during 12 face‐to‐face meetings to develop a footwear design algorithm and evidence‐based pressure‐relief algorithm as parts of the protocol. Consensus was reached where evidence was not available. Fourteen domains of foot pathology in combination with loss of protective sensation were specified for the footwear design algorithm and for each domain shoe‐specific and insole (orthosis)‐specific features were defined. Most insole‐related features and some shoe‐related features were evidence based, whereas most shoe‐related features were consensus based. The pressure‐relief algorithm was evidence based using recent footwear trial data and specifically targeted patients with a healed plantar foot ulcer. These footwear design and pressure‐relief algorithms are the first of their kind and should facilitate more uniform decision making in the prescription and manufacturing of adequate shoes for moderate‐to‐high‐risk patients, reducing variation in footwear provision and improving clinical outcome in the prevention of diabetic foot ulcers.

show abstract

“…The peak of pressure and the time of pressure are highly correlated with the ulceration of the foot; thus, the best strategy to reduce the peak pressure in metatarsal areas is to increase the contact area. In this regard, the metatarsal pad is used to increase the contact surface and reduce the pressure peak [22]. This study aimed to determine the proper metatarsal pad length for reducing foot plantar pressure parameters (peak pressure and pressure time).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Appropriate Metatarsal Pad Length on Mechanical Parameters of Diabetic Foot Ulcer During Walking

Abdi

Islami²,

Taghipour

et al. 2019

J. Sport Biomech.

View full text Add to dashboard Cite

Objective: Studies have reported that the best strategy for reducing the peak pressure on metatarsals is to increase the surface area with the metatarsal pad. but the optimal length of metatarsal pads is still unclear. The purpose of this study was to evaluate the appropriate length of metatarsal pad and its effect on the reduction of diabetic foot ulcer mechanical parameters while walking. Methods: Participants were 15 male patients with diabetes mellitus (Mean±SD=63.3±2.01 years). Handmade metatarsal pads with a length equal to 18, 20, 23 and 25% of foot length were used. Patients wearing these pads passed the RS-scan foot scan in 5 separate conditions and their data were recorded. Repeated measures Analysis of Variance (ANOVA) was used for analyzing data. Results: Peak pressure significantly decreased in metatarsal regions 1, 3 and 4 (P=0.001), but no significant difference was observed in regions 2 and 5 (P<0.05). A significant difference was observed in pressure-time integral between the five conditions in all metatarsal pads (P=0.001), but its change between the type of pad and metatarsal region was different. In the metatarsal regions 1 and 2 with pads of 18 and 20% of foot length, the peak time pressure was significantly reduced, while in the pads of 23 and 25% of foot length, it significantly increased. In the metatarsal regions 3, 4 and 5 with a pad of 18% of foot length, the peak time pressure increased, while with the pads of 20, 23, and 25 of foot length, a reduction was observed. Conclusion: As the pad length increases, the pressure peak in the metatarsal areas decreases, but the effect of pad length on the time pressure depends on the metatarsal region and the pad length. The length of the pad relative to the size of the foot is a step forward for the insole design. Insole designers are recommended to use a metatarsal pad with 23% of foot length for diabetic patients.

show abstract

Plantar pressure relief under the metatarsal heads – Therapeutic insole design using three-dimensional finite element model of the foot

Cited by 61 publications

References 36 publications

A Biomechanical Investigation of Athletic Footwear Traction Performance: Integration of Gait Analysis with Computational Simulation

A Biomechanical Investigation of Athletic Footwear Traction Performance: Integration of Gait Analysis with Computational Simulation

State of the art design protocol for custom made footwear for people with diabetes and peripheral neuropathy

Evaluation of Appropriate Metatarsal Pad Length on Mechanical Parameters of Diabetic Foot Ulcer During Walking

Contact Info

Product

Resources

About