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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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Lazzarini PA, Armstrong DG, Crews RT, Gooday C, Jarl G, Kirketerp-Moller K, Viswanathan V, Bus SA. Effectiveness of offloading interventions for people with diabetes-related foot ulcers: A systematic review and meta-analysis. Diabetes Metab Res Rev 2024; 40:e3650. [PMID: 37292021 DOI: 10.1002/dmrr.3650] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 04/17/2023] [Indexed: 06/10/2023]
Abstract
BACKGROUND Offloading treatment is crucial to heal diabetes-related foot ulcers (DFU). This systematic review aimed to assess the effectiveness of offloading interventions for people with DFU. METHODS We searched PubMed, EMBASE, Cochrane databases, and trials registries for all studies relating to offloading interventions in people with DFU to address 14 clinical question comparisons. Outcomes included ulcers healed, plantar pressure, weight-bearing activity, adherence, new lesions, falls, infections, amputations, quality of life, costs, cost-effectiveness, balance, and sustained healing. Included controlled studies were independently assessed for risk of bias and had key data extracted. Meta-analyses were performed when outcome data from studies could be pooled. Evidence statements were developed using the GRADE approach when outcome data existed. RESULTS From 19,923 studies screened, 194 eligible studies were identified (47 controlled, 147 non-controlled), 35 meta-analyses performed, and 128 evidence statements developed. We found non-removable offloading devices likely increase ulcers healed compared to removable offloading devices (risk ratio [RR] 1.24, 95% CI 1.09-1.41; N = 14, n = 1083), and may increase adherence, cost-effectiveness and decrease infections, but may increase new lesions. Removable knee-high offloading devices may make little difference to ulcers healed compared to removable ankle-high offloading devices (RR 1.00, 0.86-1.16; N = 6, n = 439), but may decrease plantar pressure and adherence. Any offloading device may increase ulcers healed (RR 1.39, 0.89-2.18; N = 5, n = 235) and cost-effectiveness compared to therapeutic footwear and may decrease plantar pressure and infections. Digital flexor tenotomies with offloading devices likely increase ulcers healed (RR 2.43, 1.05-5.59; N = 1, n = 16) and sustained healing compared to devices alone, and may decrease plantar pressure and infections, but may increase new transfer lesions. Achilles tendon lengthening with offloading devices likely increase ulcers healed (RR 1.10, 0.97-1.27; N = 1, n = 64) and sustained healing compared to devices alone, but likely increase new heel ulcers. CONCLUSIONS Non-removable offloading devices are likely superior to all other offloading interventions to heal most plantar DFU. Digital flexor tenotomies and Achilles tendon lengthening in combination with offloading devices are likely superior for some specific plantar DFU locations. Otherwise, any offloading device is probably superior to therapeutic footwear and other non-surgical offloading interventions to heal most plantar DFU. However, all these interventions have low-to-moderate certainty of evidence supporting their outcomes and more high-quality trials are needed to improve our certainty for the effectiveness of most offloading interventions.
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Affiliation(s)
- P A Lazzarini
- School of Public Health and Social Work, Queensland University of Technology, Brisbane, Queensland, Australia
- Allied Health Research Collaborative, The Prince Charles Hospital, Brisbane, Queensland, Australia
| | - D G Armstrong
- Southwestern Academic Limb Salvage Alliance (SALSA), Department of Surgery, Keck School of Medicine of University of Southern California (USC), Los Angeles, California, USA
| | - R T Crews
- Dr. William M. Scholl College of Podiatric Medicine's Center for Lower Extremity Ambulatory Research (CLEAR), Rosalind Franklin University, North Chicago, Illinois, USA
| | - C Gooday
- Elsie Bertram Diabetes Centre, Norfolk and Norwich University Hospitals, Norwich, UK
| | - G Jarl
- Department of Prosthetics and Orthotics, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
- University Health Care Research Center, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - K Kirketerp-Moller
- Copenhagen Wound Healing Center, Bispebjerg University Hospital, Copenhagen, Denmark
- Steno Diabetes Center, Copenhagen, Denmark
| | | | - S A Bus
- Amsterdam UMC, University of Amsterdam, Rehabilitation Medicine, Amsterdam Movement Sciences, Amsterdam, The Netherlands
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Ababneh A, Finlayson K, Edwards H, Lazzarini PA. Factors associated with adherence to using removable cast walker treatment among patients with diabetes-related foot ulcers. BMJ Open Diabetes Res Care 2022; 10:10/1/e002640. [PMID: 35144940 PMCID: PMC8845212 DOI: 10.1136/bmjdrc-2021-002640] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 01/15/2022] [Indexed: 12/15/2022] Open
Abstract
INTRODUCTION Adherence to using knee-high offloading treatment is critical for healing diabetes-related foot ulcers (DFUs). However, few studies have investigated patients' adherence to using knee-high offloading treatment. We aimed to investigate the levels and factors associated with adherence to using knee-high removable cast walker (RCW) treatment among patients with DFUs. RESEARCH DESIGN AND METHODS In this multicenter cross-sectional study, we investigated adherence to using knee-high RCWs in 57 participants with DFUs. All participants were clinically examined for multiple sociodemographic, physiological, and psychosocial factors. Each participant's adherence level to using RCWs was then objectively measured using dual activity monitors (attached to the wrist and RCW) over a 1-week period. Multiple linear regression was undertaken to determine those factors independently associated with adherence levels. RESULTS The mean adherence level to using RCWs was 33.6% (SD 16.5) of weight-bearing activity. Factors independently associated with lower adherence levels were being male, longer diabetes duration, not having peripheral artery disease (PAD), and having higher perceived RCW heaviness (p≤0.05). No associations were found with psychosocial factors. CONCLUSIONS Patients with DFUs adhered to using their RCWs on average for only a third of their prescribed weight-bearing treatment duration. Factors linked to lower RCW adherence levels were being male, longer diabetes duration, not having PAD, and perceived heavier RCWs. These findings highlight the importance of using gold standard non-removable knee-high offloading device treatment. Furthermore, these findings suggest, when gold standard devices are containdicated, that these factors be considered when prescribing the second choice RCW offloading treatment to optimise adherence. Regardless, further longitudinal studies are needed to confirm these factors.
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Affiliation(s)
- Anas Ababneh
- Faculty of Nursing, Applied Science Private University, Amman, Jordan
- School of Nursing, Queensland University of Technology, Brisbane, Queensland, Australia
- Centre for Healthcare Transformation, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Kathleen Finlayson
- School of Nursing, Queensland University of Technology, Brisbane, Queensland, Australia
- Centre for Healthcare Transformation, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Helen Edwards
- School of Nursing, Queensland University of Technology, Brisbane, Queensland, Australia
- Centre for Healthcare Transformation, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Peter A Lazzarini
- School of Public Health and Social Work, Queensland University of Technology, Brisbane, Queensland, Australia
- Allied Health Research Collaborative, The Prince Charles Hospital, Chermside, Queensland, Australia
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Bartolo E, Giacomozzi C, Coppini DV, Gatt A. The effect of induced joint restriction on plantar pressure during gait - a pilot study. Gait Posture 2021; 90:23-28. [PMID: 34365284 DOI: 10.1016/j.gaitpost.2021.07.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 06/14/2021] [Accepted: 07/24/2021] [Indexed: 02/02/2023]
Abstract
BACKGROUND The aim of this study was to analyse the effect of induced lower limb joint restriction on plantar pressures during gait. Focusing on restricting a single joint, without the effect of other co-morbidities, would provide better understanding as to the resultant plantar loadings during gait, which would be especially beneficial in patients requiring offloading procedures. RESEARCH QUESTION Does induced lower limb joint restriction affect plantar pressure distribution during gait? METHODS A prospective, quasi-experimental study was conducted, recruiting ten healthy, adult participants who were instructed to walk barefoot over a Tekscan HR Mat™. This procedure was repeated after separately inducing restriction of the hip, knee and ankle joints. Mean peak plantar pressure (MPP) and pressure-time integral (PTI) data were analysed to compare between unrestricted and restricted data. RESULTS Significant plantar pressure changes were observed in the heel and first metatarsal regions. Rearfoot PTIs were increased with restriction of the contralateral hip (left p <0.001) (right p =0.02) and knee joints (left p =0.01) (right p =0.04). Both MPPs (left p =0.01; right p =0.01) and PTIs (left p =0.004; right p =0.03) were increased in the first metatarsal when restricting the hip joint of the same limb. MPP was decreased in the left first metatarsal with induced knee (left p =0.01; right p =0.04) and ankle (left and right p <0.001) joint restriction. Finally, MPP was decreased in the right first metatarsal with knee (left and right p =0.01) and ankle (left p =0.04; right p =0.01) joint restriction. SIGNIFICANCE Limited joint mobility may have a direct effect on plantar pressure, particularly with restriction in the hip and knee joints, hence careful attention should be given especially in patients with conditions involving plantar loadings. Results in this study also show that PTI changes during gait should be equally evaluated clinically along with peak plantar pressure analysis.
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Affiliation(s)
- Erica Bartolo
- Faculty of Health Sciences, University of Malta, Msida, Malta.
| | - Claudia Giacomozzi
- Department of Cardiovascular Diseases, Dysmetabolic Diseases & Ageing, Italian National Institute of Health, Rome, Italy.
| | | | - Alfred Gatt
- Faculty of Health Sciences, University of Malta, Msida, Malta.
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Lazzarini PA, Jarl G. Knee-High Devices Are Gold in Closing the Foot Ulcer Gap: A Review of Offloading Treatments to Heal Diabetic Foot Ulcers. MEDICINA (KAUNAS, LITHUANIA) 2021; 57:941. [PMID: 34577864 PMCID: PMC8471745 DOI: 10.3390/medicina57090941] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/03/2021] [Accepted: 09/04/2021] [Indexed: 12/21/2022]
Abstract
Diabetic foot ulcers (DFU) are a leading cause of the global disease burden. Most DFUs are caused, and prolonged, by high plantar tissue stress under the insensate foot of a person with peripheral neuropathy. Multiple different offloading treatments have been used to try to reduce high plantar tissue stress and heal DFUs, including bedrest, casting, offloading devices, footwear, and surgical procedures. The best offloading treatments are those that balance the benefits of maximizing reductions in high plantar tissue stress, whilst reducing the risks of poor satisfaction, high costs and potential adverse events outcomes. This review aimed to summarize the best available evidence on the effects of offloading treatments to heal people with DFUs, plus review their use in clinical practice, the common barriers and solutions to using these treatments, and discuss promising emerging solutions that may improve offloading treatments in future. Findings demonstrate that knee-high offloading devices, non-removable or removable knee-high devices worn for all weight-bearing activities, are the gold standard offloading treatments to heal most patients with DFU, as they are much more effective, and typically safer, quicker, and cheaper to use compared with other offloading treatments. The effectiveness of offloading treatments also seems to increase when increased offloading mechanical features are incorporated within treatments, including customized insoles, rocker-bottom soles, controlled ankle motion, and higher cast walls. However, in clinical practice these gold standard knee-high offloading devices have low rates of prescription by clinicians and low rates of acceptance or adherence by patients. The common barriers resulting in this low use seem to surround historical misperceptions that are mostly dispelled by contemporary evidence. Further, research is now urgently required to close the implementation gap between the high-quality of supporting evidence and the low use of knee-high devices in clinical practice to reduce the high global disease burden of DFU in future.
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Affiliation(s)
- Peter A. Lazzarini
- School of Public Health and Social Work, Queensland University of Technology, Brisbane 4059, Australia
- Allied Health Research Collaborative, The Prince Charles Hospital, Brisbane 4032, Australia
| | - Gustav Jarl
- Department of Prosthetics and Orthotics, Faculty of Medicine and Health, Örebro University, SE-70182 Örebro, Sweden;
- University Health Care Research Center, Faculty of Medicine and Health, Örebro University, SE-70182 Örebro, Sweden
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Ababneh A, Finlayson K, Lazzarini P, Edwards H. Cross-Cultural Adaptation and Reliability Testing of Arabic Versions of Several Diabetic Foot Psychosocial Scales. INT J LOW EXTR WOUND 2021; 22:385-392. [PMID: 33960851 DOI: 10.1177/15347346211016699] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The main aims of this study were cross-cultural adaptation and reliability testing of an Arabic version of Foot Care Confidence Scale (FCCS), Foot Care Outcomes Expectations Scale (FCOES), Patient Interpretation of Neuropathy Scales (PINS), Neuropathy-specific Quality of Life Scales (NQOLS), and offloading-related Visual Analog Scales (VAS). Two phases of translation and reliability testing were conducted in Jordan. Phase 1 included 2 forward and backward translations with 2 panel consensuses (translators, clinicians, and experts). In Phase 2, Cronbach's alpha (α) and intraclass correlation coefficient (ICC) were used to test the internal consistency and stability (test-retest) of the Arabic scales in a sample of a total of 90 Jordanian participants with diabetic foot ulcers. Phase 1 resulted in Arabic translation and cross-cultural adaptation of the study scales. Phase 2 resulted in acceptable internal consistency of the translated scales (α = 0.74-0.91), except for the PIN "self/practitioner blame" and "acute ulcer onset" scales (α = 0.57, 0.49, respectively). Test-retest results (ICC) were: FCCS (0.85); FCOES (0.78); PINS (0.043-0.85); NQOLS (0.76-0.90); and offloading-related VAS (0.43-0.90). This study showed evidence of cultural appropriateness and reliability of most of the translated scales, for possible future implementation for the Arabic population.
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Affiliation(s)
- Anas Ababneh
- 1969Queensland University of Technology, Brisbane, Queensland, Australia.,Centre for Healthcare Transformation, 1969Queensland University of Technology, Brisbane, Queensland, Australia
| | - Kathleen Finlayson
- 1969Queensland University of Technology, Brisbane, Queensland, Australia.,Centre for Healthcare Transformation, 1969Queensland University of Technology, Brisbane, Queensland, Australia
| | - Peter Lazzarini
- 1969Queensland University of Technology, Brisbane, Queensland, Australia.,Centre for Healthcare Transformation, 1969Queensland University of Technology, Brisbane, Queensland, Australia.,Metro North Health Service District & Queensland University of Technology, Brisbane, Queensland, Australia
| | - Helen Edwards
- 1969Queensland University of Technology, Brisbane, Queensland, Australia.,Centre for Healthcare Transformation, 1969Queensland University of Technology, Brisbane, Queensland, Australia
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Load Transference with the Gain of Excessive Body Mass: A Two-Year Longitudinal Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18062879. [PMID: 33799795 PMCID: PMC8000463 DOI: 10.3390/ijerph18062879] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/08/2021] [Accepted: 03/09/2021] [Indexed: 11/20/2022]
Abstract
Previous studies investigating the effect of excessive weight on the foot have commonly been cross-sectional; therefore, it is still unclear how the foot function gradually changes with the increased body mass that is physiologically gained over time. This study aimed to use a load transfer method to identify the mechanism of how the foot function changed with the increased excessive body mass over two years. Taking normal weight as the baseline, fifteen children became overweight or obese (group 1), and fifteen counterparts maintained normal weight (group 0) over the two years. Barefoot walking was assessed using a Footscan® plate system. A load transfer method was used based upon the relative force–time integral (FTI) to provide an insight into plantar load transference as children increased in weight. Significantly increased FTIs were found at the big toe (BT), medial metatarsal (MM), lateral metatarsal (LM), and lateral heel (HL) in group 1, while at BT, MM, medial heel (HM), and HL in group 0. Foot load showed a posterior to anterior transferal from midfoot (2.5%) and heel (7.0%) to metatarsal and big toe in group 1. The control group, however, shifted the loading within the metatarsal level from LM to HM (4.1%), and equally relieved weight from around the midfoot (MF) (3.0%) to BT, MM, HM and HL. Earlier weight loss intervention is required to prevent further adverse effects on foot functions caused by excessive weight-bearing.
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Lazzarini PA, Jarl G, Gooday C, Viswanathan V, Caravaggi CF, Armstrong DG, Bus SA. Effectiveness of offloading interventions to heal foot ulcers in persons with diabetes: a systematic review. Diabetes Metab Res Rev 2020; 36 Suppl 1:e3275. [PMID: 32176438 PMCID: PMC8370012 DOI: 10.1002/dmrr.3275] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Revised: 09/01/2019] [Accepted: 09/30/2019] [Indexed: 12/16/2022]
Abstract
BACKGROUND Offloading interventions are commonly used in clinical practice to heal foot ulcers. The aim of this updated systematic review is to investigate the effectiveness of offloading interventions to heal diabetic foot ulcers. METHODS We updated our previous systematic review search of PubMed, EMBASE, and Cochrane databases to also include original studies published between July 29, 2014 and August 13, 2018 relating to four offloading intervention categories in populations with diabetic foot ulcers: (a) offloading devices, (b) footwear, (c) other offloading techniques, and (d) surgical offloading techniques. Outcomes included ulcer healing, plantar pressure, ambulatory activity, adherence, adverse events, patient-reported measures, and cost-effectiveness. Included controlled studies were assessed for methodological quality and had key data extracted into evidence and risk of bias tables. Included non-controlled studies were summarised on a narrative basis. RESULTS We identified 41 studies from our updated search for a total of 165 included studies. Six included studies were meta-analyses, 26 randomised controlled trials (RCTs), 13 other controlled studies, and 120 non-controlled studies. Five meta-analyses and 12 RCTs provided high-quality evidence for non-removable knee-high offloading devices being more effective than removable offloading devices and therapeutic footwear for healing plantar forefoot and midfoot ulcers. Total contact casts (TCCs) and non-removable knee-high walkers were shown to be equally effective. Moderate-quality evidence exists for removable knee-high and ankle-high offloading devices being equally effective in healing, but knee-high devices have a larger effect on reducing plantar pressure and ambulatory activity. Low-quality evidence exists for the use of felted foam and surgical offloading to promote healing of plantar forefoot and midfoot ulcers. Very limited evidence exists for the efficacy of any offloading intervention for healing plantar heel ulcers, non-plantar ulcers, and neuropathic ulcers with infection or ischemia. CONCLUSION Strong evidence supports the use of non-removable knee-high offloading devices (either TCC or non-removable walker) as the first-choice offloading intervention for healing plantar neuropathic forefoot and midfoot ulcers. Removable offloading devices, either knee-high or ankle-high, are preferred as second choice over other offloading interventions. The evidence bases to support any other offloading intervention is still weak and more high-quality controlled studies are needed in these areas.
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Affiliation(s)
- Peter A. Lazzarini
- School of Public Health and Social Work, Queensland
University of Technology, Brisbane, Queensland, Australia
- Allied Health Research Collaborative, The Prince Charles
Hospital, Brisbane, Queensland, Australia
| | - Gustav Jarl
- Department of Prosthetics and Orthotics, Faculty of
Medicine and Health, Örebro University, Örebro, Sweden
- University Health Care Research Center, Faculty of Medicine
and Health, Örebro University, Örebro, Sweden
| | - Catherine Gooday
- Elsie Bertram Diabetes Centre, Norfolk and Norwich
University Hospitals, Norwich, UK
- School of Health Sciences, University of East Anglia,
Norwich, UK
| | | | - Carlo F. Caravaggi
- Diabetic Foot Department, IRCCS Multimedica Group, Milan,
Italy
- University Vita-Salute San Raffaele, Milan, Italy
| | - David G. Armstrong
- Southwestern Academic Limb Salvage Alliance (SALSA),
Department of Surgery, Keck School of Medicine of University of Southern California
(USC), Los Angeles, California, USA
| | - Sicco A. Bus
- Amsterdam UMC, University of Amsterdam, Rehabilitation
Medicine, Amsterdam Movement Sciences, Amsterdam, The Netherlands
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Bus SA, Armstrong DG, Gooday C, Jarl G, Caravaggi C, Viswanathan V, Lazzarini PA. Guidelines on offloading foot ulcers in persons with diabetes (IWGDF 2019 update). Diabetes Metab Res Rev 2020; 36 Suppl 1:e3274. [PMID: 32176441 DOI: 10.1002/dmrr.3274] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 05/01/2019] [Accepted: 05/20/2019] [Indexed: 12/15/2022]
Abstract
The International Working Group on the Diabetic Foot (IWGDF) has published evidence-based guidelines on the prevention and management of diabetic foot disease since 1999. This guideline is on the use of offloading interventions to promote the healing of foot ulcers in people with diabetes and updates the previous IWGDF guideline. We followed the GRADE methodology to devise clinical questions and critically important outcomes in the PICO format, to conduct a systematic review of the medical-scientific literature, and to write recommendations and their rationale. The recommendations are based on the quality of evidence found in the systematic review, expert opinion where evidence was not available, and a weighing of the benefits and harms, patient preferences, feasibility and applicability, and costs related to the intervention. For healing a neuropathic plantar forefoot or midfoot ulcer in a person with diabetes, we recommend that a nonremovable knee-high offloading device is the first choice of offloading treatment. A removable knee-high and removable ankle-high offloading device are to be considered as the second- and third-choice offloading treatment, respectively, if contraindications or patient intolerance to nonremovable offloading exist. Appropriately, fitting footwear combined with felted foam can be considered as the fourth-choice offloading treatment. If non-surgical offloading fails, we recommend to consider surgical offloading interventions for healing metatarsal head and digital ulcers. We have added new recommendations for the use of offloading treatment for healing ulcers that are complicated with infection or ischaemia and for healing plantar heel ulcers. Offloading is arguably the most important of multiple interventions needed to heal a neuropathic plantar foot ulcer in a person with diabetes. Following these recommendations will help health care professionals and teams provide better care for diabetic patients who have a foot ulcer and are at risk for infection, hospitalization, and amputation.
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Affiliation(s)
- Sicco A Bus
- Amsterdam UMC, University of Amsterdam, Department of Rehabilitation Medicine, Amsterdam Movement Sciences, Amsterdam, The Netherlands
| | - David G Armstrong
- Southwestern Academic Limb Salvage Alliance (SALSA), Department of Surgery, Keck School of Medicine of University of Southern California (USC), Los Angeles, California
| | - Catherine Gooday
- Elsie Bertram Diabetes Centre, Norfolk and Norwich University Hospitals, Norwich, UK
- School of Health Sciences, University of East Anglia, Norwich, UK
| | - Gustav Jarl
- Department of Prosthetics and Orthotics, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
- University Health Care Research Center, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Carlo Caravaggi
- Diabetic Foot Department, IRCCS Multimedica Group, Milan, Italy
- University Vita-Salute San Raffaele, Milan, Italy
| | | | - Peter A Lazzarini
- School of Public Health and Social Work, Queensland University of Technology, Brisbane, Queensland, Australia
- Allied Health Research Collaborative, The Prince Charles Hospital, Brisbane, Queensland, Australia
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Moulaei K, Malek M, Sheikhtaheri A. Monitoring of external predisposing factors for Diabetic Foot: A literature review and physicians' perspectives. Med J Islam Repub Iran 2019; 33:159. [PMID: 32280665 PMCID: PMC7137813 DOI: 10.34171/mjiri.33.159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Indexed: 11/11/2022] Open
Abstract
Background: Diabetic foot is one of the most important complications of diabetes caused by the existence of some destructive factors in different anatomical locations of feet. Management and monitoring of these factors are very important to decrease or avoid ulcerating lesions of the foot. The purpose of this study is to identify and introduce the predisposing factors and anatomical locations associated with these destructive factors. Methods: First, we conducted a comprehensive review of different databases to identify the factors and associated anatomical locations from the previous studies. Then, we designed a questionnaire and invited physicians and specialists to express their perspectives on these factors and locations. The data were analyzed using SPSS version 23. Frequency, percentage, mean and standard deviation of these variables were calculated. Results: Based on the literature review, four factors, including pressure, moisture and sweat, temperature, and acceleration were identified as factors destructive to the tissues of the diabetic foot and worsen ulcers. The view of specialists approved the results of the literature review. Besides, there was an insignificant difference between the results of the literature review and the specialists' view in terms of anatomical locations that need to be continuously monitored. Conclusion: Monitoring the pressure in heel, first metatarsal, and first metatarsal head; moisture and sweat under the fingers, hallux and heels as well as the temperature at the first metatarsal, first metatarsal head, and the third metatarsal head are important in preventing ulceration, destructing the foot tissue, and accelerating the treatment process.
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Affiliation(s)
- Khadijeh Moulaei
- School of Health Management and Information Sciences, Iran University of Medical Sciences, Tehran, Iran
| | - Mojtaba Malek
- Research Center for Prevention of Cardiovascular Disease, Institute of Endocrinology and Metabolism, Iran University of medical sciences, Tehran, Iran
| | - Abbas Sheikhtaheri
- Health Management and Economics Research Center, Department of Health Information Management, School of Health Management and Information Sciences, Iran University of Medical Sciences, Tehran, Iran
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Bus SA, van Deursen RW, Armstrong DG, Lewis JEA, Caravaggi CF, Cavanagh PR. Footwear and offloading interventions to prevent and heal foot ulcers and reduce plantar pressure in patients with diabetes: a systematic review. Diabetes Metab Res Rev 2016; 32 Suppl 1:99-118. [PMID: 26342178 DOI: 10.1002/dmrr.2702] [Citation(s) in RCA: 149] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Footwear and offloading techniques are commonly used in clinical practice for preventing and healing of foot ulcers in persons with diabetes. The goal of this systematic review is to assess the medical scientific literature on this topic to better inform clinical practice about effective treatment. METHODS We searched the medical scientific literature indexed in PubMed, EMBASE, CINAHL, and the Cochrane database for original research studies published since 1 May 2006 related to four groups of interventions: (1) casting; (2) footwear; (3) surgical offloading; and (4) other offloading interventions. Primary outcomes were ulcer prevention, ulcer healing, and pressure reduction. We reviewed both controlled and non-controlled studies. Controlled studies were assessed for methodological quality, and extracted key data was presented in evidence and risk of bias tables. Uncontrolled studies were assessed and summarized on a narrative basis. Outcomes are presented and discussed in conjunction with data from our previous systematic review covering the literature from before 1 May 2006. RESULTS We included two systematic reviews and meta-analyses, 32 randomized controlled trials, 15 other controlled studies, and another 127 non-controlled studies. Several randomized controlled trials with low risk of bias show the efficacy of therapeutic footwear that demonstrates to relief plantar pressure and is worn by the patient, in the prevention of plantar foot ulcer recurrence. Two meta-analyses show non-removable offloading to be more effective than removable offloading for healing plantar neuropathic forefoot ulcers. Due to the limited number of controlled studies, clear evidence on the efficacy of surgical offloading and felted foam is not yet available. Interestingly, surgical offloading seems more effective in preventing than in healing ulcers. A number of controlled and uncontrolled studies show that plantar pressure can be reduced by several conservative and surgical approaches. CONCLUSIONS Sufficient evidence of good quality supports the use of non-removable offloading to heal plantar neuropathic forefoot ulcers and therapeutic footwear with demonstrated pressure relief that is worn by the patient to prevent plantar foot ulcer recurrence. The evidence base to support the use of other offloading interventions is still limited and of variable quality. The evidence for the use of interventions to prevent a first foot ulcer or heal ischemic, infected, non-plantar, or proximal foot ulcers is practically non-existent. High-quality controlled studies are needed in these areas.
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Affiliation(s)
- S A Bus
- Department of Rehabilitation Medicine, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
| | - R W van Deursen
- School of Health Care Sciences, College of Biomedical and Life Sciences, Cardiff University, Cardiff, UK
| | - D G Armstrong
- Southern Arizona Limb Salvage Alliance (SALSA), University of Arizona College of Medicine, Tucson, Arizona, USA
| | - J E A Lewis
- Cardiff and Vale University Health Board and Cardiff School of Health Science, Cardiff Metropolitan University, Cardiff, UK
| | - C F Caravaggi
- University Vita Salute San Raffaele and Diabetic Foot Clinic, Istituto Clinico Città, Studi, Milan, Italy
| | - P R Cavanagh
- Department of Orthopaedics and Sports Medicine, University of Washington Medical Centre, Seattle, WA, USA
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Plantar loading reflects ulceration risks of diabetic foot with toe deformation. BIOMED RESEARCH INTERNATIONAL 2015; 2015:326493. [PMID: 25861622 PMCID: PMC4378603 DOI: 10.1155/2015/326493] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Accepted: 02/25/2015] [Indexed: 12/31/2022]
Abstract
Diabetes has been one of the most common chronic diseases all over the world. The purpose of this study was to quantitatively assess the foot loading characteristics of diabetic patients with fifth-toe deformity through a comparative analysis with diabetic patients with healthy and normal feet. Six neuropathic diabetic female subjects with the fifth-toe deformation and six age-matched neuropathic diabetic controls without any feet deformities participated in the walking test. Dynamic barefoot plantar pressure was measured with Novel EMED force plate. Peak pressure and pressure-time integral for all 7 foot regions (rearfoot, midfoot, lateral forefoot, central forefoot, medial forefoot, great toe, and other toes) were collected. Peak pressure was significantly higher in the patients with toe deformity in rearfoot, central forefoot, and great toe regions compared with the control group. Meanwhile, loading sustaining period extended longer in great toe region of deformed group than in that of the control group, and the center of pressure was nearly in the big toe region during toe offstage. Diabetic patients with fifth-toe deformity could have plantar contact area reduction in the other toes part and increased loading to the great toe part. The result showed that fifth-toe deformity was associated with potential ulceration risk especially in hallux region.
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Menz HB, Auhl M, Ristevski S, Frescos N, Munteanu SE. Effectiveness of off-the-shelf, extra-depth footwear in reducing foot pain in older people: a randomized controlled trial. J Gerontol A Biol Sci Med Sci 2014; 70:511-7. [PMID: 25205761 DOI: 10.1093/gerona/glu169] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Foot pain is highly prevalent in older people and in many cases is associated with inappropriate footwear. This study evaluated the effectiveness of off-the-shelf, extra-depth footwear in reducing foot pain. METHODS Community-dwelling older people with disabling foot pain (72 men and 48 women aged 65 to 96 years; mean age 82 [SD 8]) were randomly allocated to an intervention group (n = 59) or control group (n = 61). The intervention group was provided with off-the-shelf, extra-depth footwear. Participants in the control group received their footwear at the completion of the study. Both groups continued to receive usual podiatry care for the study period. The primary outcome measure was the Foot Health Status Questionnaire (FHSQ), measured at baseline and 16 weeks. RESULTS There was a significant improvement in the FHSQ pain domain (ANCOVA-adjusted mean difference 11.5 points, 95% confidence interval 4.2 to 18.8, p = .002) and FHSQ function domain (10.0 points, 0.9 to 19.1, p = .032) in the intervention group compared to the control group. The intervention group also developed fewer keratotic lesions (mean difference -1.4, -2.5 to -0.2, p = .021), were less likely to report the use of co-interventions (relative risk [RR] 0.74, 0.56 to 0.98, p = .026) and were more likely to report that their foot pain had moderately or markedly improved during the study (RR = 7.93, 2.51 to 25.00, p < .001; number needed to treat = 3, 2 to 5). CONCLUSIONS Off-the-shelf, extra-depth footwear significantly reduces foot pain, improves foot function and is associated with the development of fewer keratotic lesions in older people.
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Affiliation(s)
- Hylton B Menz
- Lower Extremity and Gait Studies Program, School of Allied Health, La Trobe University, Bundoora, Victoria, Australia. Department of Podiatry, School of Allied Health, La Trobe University, Bundoora, Victoria, Australia.
| | - Maria Auhl
- Department of Podiatry, School of Allied Health, La Trobe University, Bundoora, Victoria, Australia
| | - Sonja Ristevski
- Department of Podiatry, School of Allied Health, La Trobe University, Bundoora, Victoria, Australia
| | - Nicoletta Frescos
- Department of Podiatry, School of Allied Health, La Trobe University, Bundoora, Victoria, Australia
| | - Shannon E Munteanu
- Lower Extremity and Gait Studies Program, School of Allied Health, La Trobe University, Bundoora, Victoria, Australia. Department of Podiatry, School of Allied Health, La Trobe University, Bundoora, Victoria, Australia
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Fernando ME, Crowther RG, Pappas E, Lazzarini PA, Cunningham M, Sangla KS, Buttner P, Golledge J. Plantar pressure in diabetic peripheral neuropathy patients with active foot ulceration, previous ulceration and no history of ulceration: a meta-analysis of observational studies. PLoS One 2014; 9:e99050. [PMID: 24915443 PMCID: PMC4051689 DOI: 10.1371/journal.pone.0099050] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Accepted: 04/25/2014] [Indexed: 12/30/2022] Open
Abstract
Aims Elevated dynamic plantar pressures are a consistent finding in diabetes patients with peripheral neuropathy with implications for plantar foot ulceration. This meta-analysis aimed to compare the plantar pressures of diabetes patients that had peripheral neuropathy and those with neuropathy with active or previous foot ulcers. Methods Published articles were identified from Medline via OVID, CINAHL, SCOPUS, INFORMIT, Cochrane Central EMBASE via OVID and Web of Science via ISI Web of Knowledge bibliographic databases. Observational studies reporting barefoot dynamic plantar pressure in adults with diabetic peripheral neuropathy, where at least one group had a history of plantar foot ulcers were included. Interventional studies, shod plantar pressure studies and studies not published in English were excluded. Overall mean peak plantar pressure (MPP) and pressure time integral (PTI) were primary outcomes. The six secondary outcomes were MPP and PTI at the rear foot, mid foot and fore foot. The protocol of the meta-analysis was published with PROPSERO, (registration number CRD42013004310). Results Eight observational studies were included. Overall MPP and PTI were greater in diabetic peripheral neuropathy patients with foot ulceration compared to those without ulceration (standardised mean difference 0.551, 95% CI 0.290–0.811, p<0.001; and 0.762, 95% CI 0.303–1.221, p = 0.001, respectively). Sub-group analyses demonstrated no significant difference in MPP for those with neuropathy with active ulceration compared to those without ulcers. A significant difference in MPP was found for those with neuropathy with a past history of ulceration compared to those without ulcers; (0.467, 95% CI 0.181– 0.753, p = 0.001). Statistical heterogeneity between studies was moderate. Conclusions Plantar pressures appear to be significantly higher in patients with diabetic peripheral neuropathy with a history of foot ulceration compared to those with diabetic neuropathy without a history of ulceration. More homogenous data is needed to confirm these findings.
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Affiliation(s)
- Malindu Eranga Fernando
- Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, School of Medicine and Dentistry, James Cook University, Townsville, Queensland, Australia
- Movement Analysis Laboratory, Institute of Sports and Exercise Science, James Cook University, Townsville, Queensland, Australia
- * E-mail:
| | - Robert George Crowther
- Movement Analysis Laboratory, Institute of Sports and Exercise Science, James Cook University, Townsville, Queensland, Australia
| | - Elise Pappas
- Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, School of Medicine and Dentistry, James Cook University, Townsville, Queensland, Australia
| | - Peter Anthony Lazzarini
- Allied Health Research Collaborative, Metro North Hospital & Health Service, Queensland Health, Brisbane, Queensland, Australia
- School of Clinical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Margaret Cunningham
- Department of Psychology, University of Stirling, Stirling, Scotland, United Kingdom
| | - Kunwarjit Singh Sangla
- Department of Internal Medicine, The Townsville Hospital, Townsville, Queensland, Australia
| | - Petra Buttner
- School of Public Health and Tropical Medicine, James Cook University, Townsville, Queensland, Australia
| | - Jonathan Golledge
- Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, School of Medicine and Dentistry, James Cook University, Townsville, Queensland, Australia
- Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, Queensland, Australia
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[Vacuum shoe system vs.forefoot offloading shoe for the management of metatarsal fractures. A prospective, randomized trial]. MMW Fortschr Med 2014; 156 Suppl 1:11-7. [PMID: 24930327 DOI: 10.1007/s15006-014-2877-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
BACKGROUND Metatarsal fractures are managed using different types of forefoot offloading orthosis. Theaim of this prospective study was to evaluate the clinical and pedographic results of a vacuum shoe system in comparison to a forefoot unloading shoe. METHOD 20 patients (14 women/6 men--age: 36.4 +/- 14.1 years) were prospectively included in the study. The patients were followed up at four different time points. Detailed clinical and radiological examinations were carried out, functional scores were measured and a pedographic assessment was performed. RESULTS Between the study groups no differences were seen in functional scoring. A complete bony healing was achieved within the 3 months of followup in all patients. The heelstrike to heelstrike time was without significant differences in the pedographic analysis. Adequate forefoot unloading was achieved with both orthosis. The load sharing between fore-, mid- and hindfoot showed no significant differences in the pedographic analysis. Patients' satisfaction was rated with higher values for the vacuum shoe system, but without significance. CONCLUSION Both shoe systems show an adequate unloading of the forefoot. Therefore both orthosis may be used for the treatment of metatarsal fractures.
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Lin TL, Sheen HM, Chung CT, Yang SW, Lin SY, Luo HJ, Chen CY, Chan IC, Shih HS, Sheu WHH. The effect of removing plugs and adding arch support to foam based insoles on plantar pressures in people with diabetic peripheral neuropathy. J Foot Ankle Res 2013; 6:29. [PMID: 23895323 PMCID: PMC3750449 DOI: 10.1186/1757-1146-6-29] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Accepted: 06/18/2013] [Indexed: 01/02/2023] Open
Abstract
Background Removable plug insoles appear to be beneficial for patients with diabetic neuropathic feet to offload local plantar pressure. However, quantitative evidence of pressure reduction by means of plug removal is limited. The value of additional insole accessories, such as arch additions, has not been tested. The purpose of this study was to evaluate the effect of removing plugs from foam based insoles, and subsequently adding extra arch support, on plantar pressures. Methods In-shoe plantar pressure measurements were performed on 26 patients with diabetic neuropathic feet at a baseline condition, in order to identify the forefoot region with the highest mean peak pressure (MPP). This was defined as the region of interest (ROI) for plug removal.The primary outcome was measurement of MPP using the pedar® system in the baseline and another three insole conditions (pre-plug removal, post-plug removal, and post-plug removal plus arch support). Results Among the 26 ROIs, a significant reduction in MPP (32.3%, P<0.001) was found after removing the insole plugs. With an arch support added, the pressure was further reduced (9.5%, P<0.001). There were no significant differences in MPP at non-ROIs between pre- and post-plug removal conditions. Conclusions These findings suggest that forefoot plantar pressure can be reduced by removing plugs and adding arch support to foam-based insoles. This style of insole may therefore be clinically useful in managing patients with diabetic peripheral neuropathy.
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Affiliation(s)
- Tung-Liang Lin
- Department of Physical Medicine & Rehabilitation, Taichung Veterans General Hospital, 1650 Taiwan Boulevard Sec. 4, Taichung 407, Taiwan, Republic of China
| | - Huey-Min Sheen
- Department of Physical Medicine & Rehabilitation, Taichung Veterans General Hospital, 1650 Taiwan Boulevard Sec. 4, Taichung 407, Taiwan, Republic of China
| | - Chin-Teng Chung
- Department of Physical Medicine & Rehabilitation, Taichung Veterans General Hospital, 1650 Taiwan Boulevard Sec. 4, Taichung 407, Taiwan, Republic of China
| | - Sai-Wei Yang
- Institute of Biomedical Engineering, National Yang-Ming University, No. 155, Sec. 2, Linong Street, Taipei 112, Taiwan, Republic of China
| | - Shih-Yi Lin
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Taichung Veterans General Hospital, 1650 Taiwan Boulevard Sec. 4, Taichung 407, Taiwan, Republic of China
| | - Hong-Ji Luo
- School and Graduate Institute of Physical Therapy and Assistive Technology, National Yang-Ming University, No. 155, Sec. 2, Linong Street, Taipei 112, Taiwan, Republic of China
| | - Chung-Yu Chen
- Graduate School of Physical Education, National Taiwan University of Physical Education and Sport, No. 16, Sec. 1, Shuang-Shih Rd, Taichung 404, Taiwan, Republic of China
| | - I-Cheng Chan
- Department of Physical Medicine & Rehabilitation, Taichung Veterans General Hospital, 1650 Taiwan Boulevard Sec. 4, Taichung 407, Taiwan, Republic of China
| | - Hsu-Sheng Shih
- Department of Physical Therapy, Fooyin University, 1 Jinxue Rd., Daliao Dist, Kaohsiung 83102, Taiwan, Republic of China
| | - Wayne Huey-Herng Sheu
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Taichung Veterans General Hospital, 1650 Taiwan Boulevard Sec. 4, Taichung 407, Taiwan, Republic of China.,College of Medicine, National Yang-Ming University, No. 155, Sec. 2, Linong Street, Taipei 112, Taiwan, Republic of China.,Institute of Medical Technology, National Chung-Hsing University, 250 Kuo Kuang Rd, Taichung 402, Taiwan, Republic of China
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The value of reporting pressure-time integral data in addition to peak pressure data in studies on the diabetic foot: a systematic review. Clin Biomech (Bristol, Avon) 2013; 28:117-21. [PMID: 23273847 DOI: 10.1016/j.clinbiomech.2012.12.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Revised: 08/14/2012] [Accepted: 12/03/2012] [Indexed: 02/07/2023]
Abstract
BACKGROUND In plantar pressure studies on the diabetic foot, pressure-time integral data is often analyzed and reported next to peak pressure data, mostly because of its assumed additional value. The aim was to assess this additional value by systematically reviewing the relevant literature. METHODS The MEDLINE database was searched for original articles that report both pressure-time integral and peak pressure data measured in the diabetic foot. Eligible articles were assessed according to differences in reported results between both parameters, the quality of discussion and specific conclusions drawn on pressure-time integral data, and the added value of the pressure-time integral data. FINDINGS All 35 eligible papers described studies on gait. Differences in reported results between parameters were found to be clear, minimal, or absent in 15, 8, and 12 papers, respectively. In 15 papers, the pressure-time integral results were discussed with respect to the peak pressure results, but in only 5 papers the explanation given for reported differences was considered meaningful. Specific conclusions were drawn in 11 papers. Some added value was found in 10 papers, but in all papers one or more limitations to this value applied. INTERPRETATION The study findings suggest that the added value of reporting pressure-time integral data is limited. Unless clear benefit can be shown such, as that ulceration can be better predicted using pressure-time integral than using peak pressure data, the reporting of pressure-time integral data seems redundant to express the plantar loading in the diabetic foot.
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Abstract
Retrospective and prospective studies have shown that elevated plantar pressure is a causative factor in the development of many plantar ulcers in diabetic patients and that ulceration is often a precursor of lower-extremity amputation. Herein, we review the evidence that relieving areas of elevated plantar pressure (off-loading) can prevent and heal plantar ulceration.There is no consensus in the literature concerning the role of off-loading through footwear in the primary or secondary prevention of ulcers. This is likely due to the diversity of intervention and control conditions tested, the lack of information about off-loading efficacy of the footwear used, and the absence of a target pressure threshold for off-loading. Uncomplicated plantar ulcers should heal in 6 to 8 weeks with adequate off-loading. Total-contact casts and other nonremovable devices are most effective because they eliminate the problem of nonadherence to recommendations for using a removable device. Conventional or standard therapeutic footwear is not effective in ulcer healing. Recent US and European surveys show that there is a large discrepancy between guidelines and clinical practice in off-loading diabetic foot ulcers. Many clinics continue to use methods that are known to be ineffective or that have not been proved to be effective while ignoring methods that have demonstrated efficacy.A variety of strategies are proposed to address this situation, notably the adoption and implementation of recently established international guidelines, which are evidence based and specific, by professional societies in the United States and Europe. Such an approach would improve the often poor current expectations for healing diabetic plantar ulcers.
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Abstract
BACKGROUND Retrospective and prospective studies have shown that elevated plantar pressure is a causative factor in the development of many plantar ulcers in diabetic patients and that ulceration is often a precursor of lower extremity amputation. In this article, we review the evidence that relieving areas of elevated plantar pressure (off-loading) can prevent and heal plantar ulceration. RESULTS There is no consensus in the literature concerning the role of off-loading through footwear in primary or secondary prevention of ulcers. This is likely due to the wide diversity of intervention and control conditions tested, the lack of information about off-loading efficacy of the footwear used, and the absence of a target pressure threshold for off-loading. Uncomplicated plantar ulcers should heal in 6 to 8 weeks with adequate off-loading. The total contact cast and other nonremovable devices are most effective because they eliminate the problem of nonadherence to recommendations for using a removable device. Conventional or standard therapeutic footwear is not effective in ulcer healing. Recent United States and European surveys show a large discrepancy between guidelines and clinical practice in off-loading diabetic foot ulcers. Many clinics continue to use methods that are known to be ineffective or have not been proven effective, while ignoring methods that have been demonstrated to be efficacious. CONCLUSIONS A number of strategies are proposed to address this situation, notably the adoption and implementation of recently established international guidelines, which are evidence-based and specific, by professional societies in the United States and Europe. Such an approach would change the often poor current expectations for healing diabetic plantar ulcers.
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Affiliation(s)
- Peter R Cavanagh
- Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, WA 98195-6500, USA.
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Gravano S, Ivanenko YP, Maccioni G, Macellari V, Poppele RE, Lacquaniti F. A novel approach to mechanical foot stimulation during human locomotion under body weight support. Hum Mov Sci 2010; 30:352-67. [PMID: 20417979 DOI: 10.1016/j.humov.2010.01.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2009] [Revised: 12/26/2009] [Accepted: 01/05/2010] [Indexed: 12/01/2022]
Abstract
Input from the foot plays an essential part in perceiving support surfaces and determining kinematic events in human walking. To simulate adequate tactile pressure inputs under body weight support (BWS) conditions that represent an effective form of locomotion training, we here developed a new method of phasic mechanical foot stimulation using light-weight pneumatic insoles placed inside the shoes (under the heel and metatarsus). To test the system, we asked healthy participants to walk on a treadmill with different levels of BWS. The pressure under the stimulated areas of the feet and subjective sensations were higher at high levels of BWS and when applied to the ball and toes rather than heels. Foot stimulation did not disturb significantly the normal motor pattern, and in all participants we evoked a reliable step-synchronized triggering of stimuli for each leg separately. This approach has been performed in a general framework looking for "afferent templates" of human locomotion that could be used for functional sensory stimulation. The proposed technique can be used to imitate or partially restore surrogate contact forces under body weight support conditions.
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Affiliation(s)
- S Gravano
- Laboratory of Neuromotor Physiology, IRCCS Fondazione Santa Lucia, via Ardeatina 306, 00179 Rome, Italy
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