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Castro-Martins P, Marques A, Coelho L, Vaz M, Baptista JS. In-shoe plantar pressure measurement technologies for the diabetic foot: A systematic review. Heliyon 2024; 10:e29672. [PMID: 38699042 PMCID: PMC11064085 DOI: 10.1016/j.heliyon.2024.e29672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 04/11/2024] [Accepted: 04/12/2024] [Indexed: 05/05/2024] Open
Abstract
Introduction Loss of cutaneous protective sensation and high plantar pressures increase the risk for diabetic foot patients. Trauma and ulceration are imminent threats, making assessment and monitoring essential. This systematic review aims to identify systems and technologies for measuring in-shoe plantar pressures, focusing on the at-risk diabetic foot population. Methods A systematic search was conducted across four electronic databases (Scopus, Web of Science, PubMed, Oxford Journals) using PRISMA methodology, covering articles published in English from 1979 to 2024. Only studies addressing systems or sensors exclusively measuring plantar pressures inside the shoe were included. Results A total of 87 studies using commercially available devices and 45 articles proposing new systems or sensors were reviewed. The prevailing market offerings consist mainly of instrumented insoles. Emerging technologies under development often feature configurations with four, six or eight resistive sensors strategically placed within removable insoles. Despite some variability due to the inherent heterogeneity of human gait, these devices assess plantar pressure, although they present significant differences between them in measurement results. Individuals with diabetic foot conditions appears exhibit elevated plantar pressures, with reported peak pressures reaching approximately 1000 kPa. The results also showed significant differences between the diabetic and non-diabetic groups. Conclusion Instrumented insoles, particularly those incorporating resistive sensor technology, dominate the field. Systems employing eight sensors at critical locations represent a pragmatic approach, although market options extend to systems with up to 960 sensors. Differences between devices can be a critical factor in measurement and highlights the importance of individualized patient assessment using consistent measurement devices.
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Affiliation(s)
- Pedro Castro-Martins
- CIETI, ISEP, Polytechnic of Porto, Portugal
- Faculty of Engineering, University of Porto, Portugal
| | - Arcelina Marques
- CIETI, ISEP, Polytechnic of Porto, Portugal
- Institute for Science and Innovation in Mechanical and Industrial Engineering, Porto, Portugal
| | - Luís Coelho
- CIETI, ISEP, Polytechnic of Porto, Portugal
- INESC-TEC, Centre for Robotics in Industry and Intelligent Systems, Porto, Portugal
| | - Mário Vaz
- Faculty of Engineering, University of Porto, Portugal
- Institute for Science and Innovation in Mechanical and Industrial Engineering, Porto, Portugal
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Souza J, Escadas S, Baxevani I, Rodrigues D, Freitas A. Smart Wearable Systems for the Remote Monitoring of Selected Vascular Disorders of the Lower Extremity: A Systematic Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:15231. [PMID: 36429951 PMCID: PMC9690814 DOI: 10.3390/ijerph192215231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 11/03/2022] [Accepted: 11/15/2022] [Indexed: 06/16/2023]
Abstract
This systematic review aims at providing an overview of the state of the art regarding smart wearable systems (SWS) applications to monitor the status of patients suffering from vascular disorders of the lower extremity. Peer-reviewed literature has been analyzed to identify employed data collection methods, system characteristics, and functionalities, and research challenges and limitations to be addressed. The Medline (PubMed) and SCOPUS databases were considered to search for publications describing SWS for remote or continuous monitoring of patients suffering from intermittent claudication, venous ulcers, and diabetic foot ulcers. Publications were first screened based on whether they describe an SWS applicable to the three selected vascular disorders of the lower extremity, including data processing and output to users. Information extracted from publications included targeted disease, clinical parameters to be measured and wearable devices used; system outputs to the user; system characteristics, including capabilities of remote or continuous monitoring or functionalities resulting from advanced data analyses, such as coaching, recommendations, or alerts; challenges and limitations reported; and research outputs. A total of 128 publications were considered in the full-text analysis, and 54 were finally included after eligibility criteria assessment by four independent reviewers. Our results were structured and discussed according to three main topics consisting of data collection, system functionalities, and limitations and challenges.
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Affiliation(s)
- Julio Souza
- Department of Community Medicine, Information and Health Decision Sciences (MEDCIDS), Faculty of Medicine of the University of Porto, 4200-450 Porto, Portugal
| | - Sara Escadas
- Department of Community Medicine, Information and Health Decision Sciences (MEDCIDS), Faculty of Medicine of the University of Porto, 4200-450 Porto, Portugal
| | - Isidora Baxevani
- Department of Materials Science and Technology, University of Crete, 700 13 Iraklio, Greece
| | - Daniel Rodrigues
- Department of Community Medicine, Information and Health Decision Sciences (MEDCIDS), Faculty of Medicine of the University of Porto, 4200-450 Porto, Portugal
| | - Alberto Freitas
- Department of Community Medicine, Information and Health Decision Sciences (MEDCIDS), Faculty of Medicine of the University of Porto, 4200-450 Porto, Portugal
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Li M. Guidelines and standards for comprehensive clinical diagnosis and interventional treatment for diabetic foot in China (Issue 7.0). J Interv Med 2021; 4:117-129. [PMID: 34805959 PMCID: PMC8562298 DOI: 10.1016/j.jimed.2021.07.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 07/12/2021] [Accepted: 07/13/2021] [Indexed: 01/22/2023] Open
Abstract
Diabetic foot (DF) is one of the most common complications of diabetes and is associated with high morbidity, disability, lethality and low cure-rate. The clinical diagnosis and treatment of DF need to be standardized. The Chinese Diabetic Foot Cell and Interventional Therapy Technology Alliance has released six editions of guidelines and standards for clinical diagnosis and interventional treatment of DF, which filled the gap in the domestic DF treatment standard and played an important role in improving the level of diagnosis and treatment in China. In line with the latest developments in diagnosis and treatment, the Alliance, along with other 89 institutions, developed and issued the new edition based on the sixth edition to help standardize the clinical diagnosis and treatment of DF in China.
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Affiliation(s)
- Maoquan Li
- China Alliance of Cellular and Interventional Therapy Techniques for Diabetic Foot, China.,Technical Committee on Interventional Medicine and Bioengineering of Chinese Intervention Physicians Branch, China.,National Centre for Clinical Medical Research on Radiation and Treatment, China.,Department of Interventional and Vascular Surgery, Affiliated Tenth People's Hospital of Tongji University, China.,Interventional Vascular Institute of Tongji University, Shanghai 200072, China
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Abbott CA, Chatwin KE, Foden P, Hasan AN, Sange C, Rajbhandari SM, Reddy PN, Vileikyte L, Bowling FL, Boulton AJM, Reeves ND. Innovative intelligent insole system reduces diabetic foot ulcer recurrence at plantar sites: a prospective, randomised, proof-of-concept study. LANCET DIGITAL HEALTH 2019; 1:e308-e318. [PMID: 33323253 DOI: 10.1016/s2589-7500(19)30128-1] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 08/19/2019] [Accepted: 08/21/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Prevention of diabetic foot ulcer recurrence in high risk patients, using current standard of care methods, remains a challenge. We hypothesised that an innovative intelligent insole system would be effective in reducing diabetic foot ulcer recurrence in such patients. METHODS In this prospective, randomised, proof-of-concept study, patients with diabetes, and with peripheral neuropathy and a recent history of plantar foot ulceration were recruited from two multidisciplinary outpatient diabetic foot clinics in the UK, and were randomly assigned to either intervention or control. All patients received an insole system, which measured plantar pressure continuously during daily life. The intervention group received audiovisual alerts via a smartwatch linked to the insole system and offloading instructions when aberrant pressures were detected; the control group did not receive any alerts. The primary outcome was plantar foot ulcer occurrence within 18 months. This trial is registered with ISRCTN, ISRCTN05585501, and is closed to accrual and complete. FINDINGS Between March 18, 2014, and Dec 20, 2016, 90 patients were recruited and consented to the study, and 58 completed the study. At follow-up, ten ulcers from 8638 person-days were recorded in the control group and four ulcers from 11 835 person-days in the intervention group: a 71% reduction in ulcer incidence in the intervention group compared with the control group (incidence rate ratio 0·29, 95% CI, 0·09-0·93; p=0·037). The number of patients who ulcerated was similar between groups (six of 26 [control group] vs four of 32 [intervention group]; p=0·29); however, individual plantar sites ulcerated more often in the control group (ten of 416) than in the intervention group (four of 512; p=0·047). In an exploratory analysis of good compliers (n=40), ulcer incidence was reduced by 86% in the intervention group versus control group (incidence rate ratio 0·14, 95% CI 0·03-0·63; p=0·011). In the exploratory analysis, plantar callus severity (change from baseline to 6 months) was greater in re-ulcerating patients (6·5, IQR 4·0-8·3) than non-re-ulcerating patients (2·0, 0·0-4·8; p=0·040). INTERPRETATION To our knowledge, this study is the first to show that continuous plantar pressure monitoring and dynamic offloading guidance, provided by an innovative intelligent insole system, can lead to a reduction in diabetic foot ulcer site recurrence. FUNDING Diabetes UK and Orpyx Medical Technologies.
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Affiliation(s)
- Caroline A Abbott
- Research Centre for Musculoskeletal Science & Sports Medicine, Department of Life Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, UK.
| | - Katie E Chatwin
- Research Centre for Musculoskeletal Science & Sports Medicine, Department of Life Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, UK
| | - Philip Foden
- Medical Statistics Department, University Hospital of South Manchester NHS Foundation Trust, Manchester, UK
| | - Ahmad N Hasan
- Research Centre for Musculoskeletal Science & Sports Medicine, Department of Life Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, UK; Institute of Medical Science and Technology, University Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Chandbi Sange
- Diabetes Centre, Lancashire Teaching Hospitals NHS Foundation Trust, Lancashire, UK
| | - Satyan M Rajbhandari
- Diabetes Centre, Lancashire Teaching Hospitals NHS Foundation Trust, Lancashire, UK
| | - Prabhav N Reddy
- Department of Medical Physics and Biomedical Engineering, University College London, London, UK
| | - Loretta Vileikyte
- Department of Medicine, Manchester Royal Infirmary, Manchester, UK; Diabetes Research Institute, University of Miami, Miami, FL, USA
| | - Frank L Bowling
- Division of Diabetes, Endocrinology & Gastroenterology University of Manchester, Manchester, UK
| | - Andrew J M Boulton
- Department of Medicine, Manchester Royal Infirmary, Manchester, UK; Diabetes Research Institute, University of Miami, Miami, FL, USA
| | - Neil D Reeves
- Research Centre for Musculoskeletal Science & Sports Medicine, Department of Life Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, UK
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