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Advisor(s)
Abstract(s)
Diabetic foot is a serious complication of diabetes that affects millions of people around the world. It is characterized by poor circulation, nerve damage and high plantar pressure that can lead to the development of foot ulcers and amputations. Offloading plantar pressure in certain regions is extremely important. In this paper
we propose a preliminary methodology for a new concept of pneumatic insole for plantar pressure offloading. It consists of an insole with pockets, located in critical regions of the diabetic foot, which can be inflated or deflated to maintain adequate pressure. The main goal of this work is to select the most suitable fluid for the
system and that provides a better applicability for this new solution, describing its pros and cons. When analyzing the results, the use of compressed air as a fluid to regulate the pressure in the insole pockets stood out as the most appropriate and advantageous option compared to other gaseous or liquid fluids. Liquid fluids have negative aspects, such as the risk of damaging electronic components in case of leaks and the need for additional reservoirs. In addition, air has a better thermal insulation capacity and does not pose a risk of toxicity, an important aspect for a system that will be in direct contact with the diabetic foot. The availability and zero cost of air, its lightness, and the absence of the need for reservoirs make the pneumatic insole more accessible and low cost, also providing greater cushioning, shock absorption and pressure redistribution.
Description
PCM's contribution to this work was within the scope of a PhD grant (UI/BD/151285/2021) financed by the Portuguese Foundation for Science and Technology (FCT, Portugal). Part this work was developed in the scope of the “Smart-Health-4-All—Smart medical technologies for better health and care” project (POCI-01-0247-FEDER-046115; LISBOA-01-0247-FEDER-046115), which was co-financed by Portugal 2020, under the Operational Program for Competitiveness and Internationalization (COMPETE 2020) through the European Regional Development Fund (ERDF).
Keywords
Diabetic foot Offloading Plantar pressure Pneumatic insole
Citation
Castro-Martins, P., Pinto-Coelho, L., Vaz, M., Pinto, M., Marques, A. (2023). Towards an In-Shoe Pneumatic Insole to Plantar Injury Prevention in Diabetic Foot. In: Martins Amaro, A., et al. Proceedings of the 10th Congress of the Portuguese Society of Biomechanics. CNB 2023. Lecture Notes in Bioengineering. Springer, Cham. https://doi.org/10.1007/978-3-031-47790-4_29 Proceedings of the 10th Congress of the Portuguese Society of Biomechanics, Lecture Notes in Bioengineering, https://doi.org/10.1007/978-3-031-47790-4_29
Publisher
Springer