Effectiveness of various materials in reducing plantar shear forces. A pilot study

2000 ◽  
Vol 90 (7) ◽  
pp. 346-353 ◽  
Author(s):  
M Curryer ◽  
ED Lemaire
Keyword(s):  
Diabetes Mellitus ◽  
Pilot Study ◽  
Diabetic Foot ◽  
Shear Force ◽  
Foot Ulcers ◽  
Shear Forces ◽  
Patients With Diabetes ◽  
Force Data ◽  
Precipitating Factor ◽  
Better Than

Vertical plantar forces are known to be a major precipitating factor in the development of foot pathology. It is also postulated that shear forces are important in the pathogenesis of foot ulcers in patients with diabetes mellitus. Various materials are used in insoles designed to reduce forces on the foot. While many foam materials have been tested for their ability to dissipate vertical forces, few studies have tested the effect of these materials on shear forces. This study assessed the effectiveness of five different materials in reducing plantar shear forces and compared two new gel materials with three of the more conventional foam materials. Four subjects were tested while walking over a force platform with one of the five materials taped to the surface. Peak force, impulse, and resultant shear force data were analyzed. The gel materials were significantly better than the foam materials at reducing shear forces. Thus the use of gel materials in insoles may be indicated for the reduction of plantar shear forces on the diabetic foot.

Surgical Off-loading of the Diabetic Foot

2010 ◽  
Vol 100 (5) ◽  
pp. 369-384 ◽  
Author(s):  
Robert G. Frykberg ◽  
Nicholas J. Bevilacqua ◽  
Geoffrey Habershaw
Keyword(s):  
Diabetes Mellitus ◽  
High Risk ◽  
Diabetic Foot ◽  
Surgical Intervention ◽  
Surgical Decompression ◽  
Foot Ulcers ◽  
Foot Surgery ◽  
Patients With Diabetes

Surgical intervention for chronic deformities and ulcerations has become an important component in the management of patients with diabetes mellitus. Such patients are no longer relegated to wearing cumbersome braces or footwear for deformities that might otherwise be easily corrected. Although surgical intervention in these often high-risk individuals is not without risk, the outcomes are fairly predictable when patients are properly selected and evaluated. In this brief review, we discuss the rationale and indications for diabetic foot surgery, focusing on the surgical decompression of deformities that frequently lead to foot ulcers. (J Am Podiatr Med Assoc 100(5): 369–384, 2010)

scholarly journals Impact of diabetic (diabetes mellitus) patients immune factors on the skin cell viability in vitro

2020 ◽  
Vol 17 (3) ◽  
pp. 263-274
Author(s):  
M. A. Mashkova ◽  
T. V. Mokhort ◽  
V. A. Goranov
Keyword(s):  
Diabetes Mellitus ◽  
Diabetic Foot ◽  
Culture System ◽  
Foot Ulcers ◽  
Diabetic Foot Ulcers ◽  
Skin Culture ◽  
Patients With Diabetes ◽  
Immune Factors ◽  
3D Skin

At the moment, a lot of scientific research focused on the role of immune mechanisms in diabetic foot ulcers development and impaired healing. A 3D skin culture system as a relevant skin model may prove valuable in investigating these mechanisms and may be a useful tool to study interactions between different cell types such as keratinocytes, fibroblasts, and immune cells. The aim of our research was to study keratinocytes and fibroblasts viability in co-culture with immune factors of patients with diabetes mellitus type 2 (DM2) and patients with diabetes and chronic foot ulcers in a 3D skin culture system. In this study, the multilayer 3D immunocompetent model of human skin comprising keratinocytes, fibroblasts, and mononuclears in an agarose-fibronectin gel was used. The human immortalized keratinocyte cell line, HaCaT, and primary fibroblast cell culture isolated from skin samples of healthy man in abdominal surgery were used for the 3D system. For the experiment 20 % serum of 9 patients with chronic diabetic foot ulcers (without active inflammation signs), 9 diabetic type 2 patients and 9 healthy people, and mononuclears of the same groups of patients were used. 9 experimental series with 3 repeats were carried out. Mononuclears of patients with DM2 and DM2 and diabetic foot syndrome (DFS) had a greater inhibitory effect on fibroblasts, significantly inhibiting their proliferation to a level of 83.78 [79.03; 89.53] % vs 70.18 [66.38; 72.10] % vs 95.40 [91.75; 99.05] %, H = 21.259, p <0.001 – DM2, DFS, and the control group, respectively. There was no significant difference in the cytoinhibitory effect of mononuclears on keratinocytes between different groups: 96.40 [92.82; 100.50] % vs 93.61 [86.80; 97.10] % vs 92.87 [85.15; 95.25] %, H = 4.459, p = 0.108 – control, DM2 and DFS group, respectively. Adding serum to the culture system influenced significantly the viability of neither keratynocytes – 99.40 [95.35; 102.05]  % vs 98.60 [90.55; 100.40] % vs 94.79 [91.65; 98.16] %, H = 3.030, p = 0.220 nor of fibroblasts – 95.61 [92.39; 100.19] % vs 95.80 [88.99; 102.15] % vs 96.20 [99.69; 88.70] %, H = 0.353, p = 0.838, control, DM2 and DFS group, respectively. It was determined that the fibroblasts vialability significantly decreases after introducing mononuclears of patients with DM and patients with DM and chronic diabetic foot ulcers to the co-culture system. Adding serum of these patient groups to the culture system doesn’t influence significantly the viability of skin cells.

scholarly journals Drugs abuse and increase in referral to hospital to prevent recurrence of diabetic foot ulcer infection

2019 ◽  
Vol 10 (1) ◽  
pp. 89-94
Author(s):  
Mostafa Madmoli ◽  
Yaghoob Madmoli ◽  
Fariba Mobarez ◽  
Hosein Taqvaeinasab ◽  
Pouriya Darabiyan ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Drug Abuse ◽  
Significant Relationship ◽  
Diabetic Foot ◽  
Foot Ulcer ◽  
Diabetic Foot Ulcer ◽  
Foot Ulcers ◽  
Diabetic Foot Ulcers ◽  
Patients With Diabetes ◽  
History Of

Introduction: Diabetic foot ulcer is one of the complications of diabetes. This study was aimed to determine drugs abuse and increase in referral to hospital to prevent recurrence of diabetic foot ulcer infection. Materials and Methods: In this retrospective cross-sectional analytical descriptive study, 1693 patients with diabetes between 2015-17 were enrolled. Files of this number of diabetic patients admitted to khatam-ol-Anbia hospital in shoushtar city were studied. Data were entered into SPSS software version 18 and analyzed using descriptive statistics, analytical tests. Results: In this study 1693 patients with diabetes mellitus with a mean age of 52.13 ± 53.22 years. In the case of diabetic foot ulcers, 9.5% of the patients had diabetic foot ulcers and 4.8% had a history of amputation and 2.4% of the patients had a history of surgery on their diabetic ulcer. In this study, a significant relationship was found between education level and diabetic foot ulcer (p <0.003). Also, there was a significant relationship between limb amputation and drug abuse or smoking (P = 0.009). In this study, patients who had drug and smoking or smoking 4.3% more than those who did not consume, they were referred to the hospital to prevent recurrence of foot ulcer infection. In this study, there was a significant relationship between drug abuse or smoking and the rate of surgery in diabetes mellitus (P = 0.007). Conclusion: Given that in this study, patients who had drug and smoking or smoking 4.3% more than those who did not consume, they were referred to the hospital to prevent recurrence of foot ulcer infection. In this study, there was a significant relationship between drug abuse or smoking and the rate of surgery in diabetes mellitus. Therefore, there is a suggestion to reduce the consumption or abandonment of drugs and smoking.  

scholarly journals Do Patients With Diabetes Mellitus Want Wearable Technology to Prevent Diabetic Foot Ulcers?

2019 ◽  
Vol 13 (4) ◽  
pp. 799-800
Author(s):  
Taylor Novice ◽  
Chandu Vemuri ◽  
Catherine Gilbert ◽  
Anthony Fici ◽  
Elizabeth VanWieren ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Diabetic Foot ◽  
Wearable Technology ◽  
Foot Ulcers ◽  
Diabetic Foot Ulcers ◽  
Patients With Diabetes

Severe Vitamin D3 Deficiency in the Majority of Patients with Diabetic Foot Ulcers

2018 ◽  
Vol 50 (08) ◽  
pp. 615-619 ◽  
Author(s):  
Joachim Feldkamp ◽  
Karsten Jungheim ◽  
Matthias Schott ◽  
Beatrix Jacobs ◽  
Michael Roden
Keyword(s):  
Diabetes Mellitus ◽  
Diabetic Foot ◽  
Cell Function ◽  
Glycosylated Hemoglobin ◽  
Diabetic Foot Syndrome ◽  
Foot Ulcers ◽  
Control Group ◽  
Diabetic Foot Ulcers ◽  
Healthy Humans ◽  
Patients With Diabetes

AbstractDiabetic foot ulcers are a severe complication in patients with diabetes mellitus. Vitamin D is associated with impaired β-cell function and insulin resistance, and is necessary for wound healing and bone metabolism. We measured the serum concentrations of 25-hydroxyvitamin D3 in 104 patients (63 inpatients, 41 outpatients) with diabetic foot ulcers and compared them to 99 healthy humans (control) and 103 patients with diabetes mellitus type 2 without diabetic foot ulcers. Calcium, creatinine, and parathyroid hormone were measured in patients with diabetic foot ulcers. The data were analysed together with glycosylated hemoglobin A1c and the severity of diabetic foot lesions according to the Armstrong classification. Levels of 25-hydroxyvitamin D3 were lower (11.8±11.3 ng/ml, p<0.001) in patients with diabetic foot ulcers (mean age 70±12 years) than in the control group (27.2±12.2 ng/ml). No difference was found between in- and outpatients. Fifty-eight (55.8%) of patients with diabetic foot ulcers had a severe 25-hydroxyvitamin D3 deficiency with levels below 10 ng/ml. Only 12% of the patients had 25-hydroxyvitamin D3 levels above 20 ng/ml. Secondary hyperparathyroidism was found in 27.9% of patients and 11.5% of the patients were hypocalcemic. There was a negative correlation (r=–0.241) (p<00.1) between Armstrong classification and 25-hydroxyvitamin D3 status. In conclusion, patients with diabetic foot syndrome are at high risk of 25-hydroxyvitamin D3 deficiency. Thus, any patient with diabetic foot syndrome should undergo 25-hydroxyvitamin D3 measurement and supplementation, if values are found to be decreased.

scholarly journals Glycated Hemoglobin (HbA1c) as a Biomarker for Diabetic Foot Peripheral Neuropathy

Diseases ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 16
Author(s):  
Giulia Casadei ◽  
Marta Filippini ◽  
Lorenzo Brognara
Keyword(s):  
Diabetes Mellitus ◽  
Peripheral Neuropathy ◽  
Diabetic Foot ◽  
Glycated Hemoglobin ◽  
Chronic Inflammatory Demyelinating Polyneuropathy ◽  
Glycemic Variability ◽  
Future Research ◽  
Patients With Diabetes ◽  
Axonal Dysfunction ◽  
Biomarker Research

Background: Diabetic peripheral neuropathy (DPN) is known to predict foot ulceration, lower-extremity amputation and mortality. Patients with diabetes mellitus have a predisposition toward developing chronic inflammatory demyelinating polyneuropathy, and this may also facilitate the formation of diabetic foot and cutaneous impairment, which are considered one of the most serious impairments of diabetes mellitus, with a prevalence of 4–10% in this population. Biomarkers research provides opportunities for the early diagnosis of these complications for specific treatments useful to prevent amputation and, therefore, physical inability and mental disturbance. The recent literature has suggested that glycemic levels may be a novel factor in the pathogenesis of diabetic foot complications and is an important mediator of axonal dysfunction. The aim of this systematic literary review is to determine whether hemoglobin A1c (HbA1c) is a positive predictor for diabetic foot peripheral neuropathy and its complications, such as foot cutaneous impairments. There is a lack of consensus regarding the effect of glycemic variability on diabetic foot peripheral neuropathy, unlike other complications such as retinopathy, nephropathy or micro/macrovascular pathology. Methods: Relevant articles were searched in the Medline database using PubMed and Scopus and relevant keywords. The primary search terms used were “glycated hemoglobin” OR “HbA1c” AND “diabetic neuropathies” AND “Foot”. Results: A number of articles (336) were initially identified while searching the scientific literature regarding this topic, and 32 articles were selected and included in this review. Conclusions: This review highlights the role of HbA1c in diabetic foot peripheral neuropathy. Biomarkers play an important role in the decision-making process, and HbA1c levels are extensively used for diabetic foot clinical outcomes and settings, but biomarker research in diabetic foot peripheral neuropathy is in its infancy and will require careful attention to a number of factors and associations, since the consequences of DPN also include neurological alterations. HbA1c is an accurate and easy-to-administer test and can be an effective biomarker in establishing the diagnosis of diabetes, but future research should focus on standardizing the HbA1c level and selecting which DPN value and its correlated complications, such as foot cutaneous impairments, are the most informative.

scholarly journals Quantifying dermal microcirculatory changes of neuropathic and neuroischemic diabetic foot ulcers using spatial frequency domain imaging: a shade of things to come?

2020 ◽  
Vol 8 (2) ◽  
pp. e001815
Author(s):  
Grant A Murphy ◽  
Rajinder P Singh-Moon ◽  
Amaan Mazhar ◽  
David J Cuccia ◽  
Vincent L Rowe ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Spatial Frequency ◽  
Oxygen Saturation ◽  
Diabetic Foot ◽  
Clinical Course ◽  
Tissue Oxygen Saturation ◽  
Tissue Oxygen ◽  
Spatial Frequency Domain Imaging ◽  
Patients With Diabetes ◽  
Spatial Frequency Domain

IntroductionThe use of non-invasive vascular and perfusion diagnostics are an important part of assessing lower extremity ulceration and amputation risk in patients with diabetes mellitus. Methods for detecting impaired microvascular vasodilatory function in patients with diabetes may have the potential to identify sites at risk of ulceration prior to clinically identifiable signs. Spatial frequency domain imaging (SFDI) uses patterned near-infrared and visible light spectroscopy to determine tissue oxygen saturation and hemoglobin distribution within the superficial and deep dermis, showing distinct microcirculatory and oxygenation changes that occur prior to neuropathic and neuroischemic ulceration.Research designs and methods35 patients with diabetes mellitus and a history of diabetic foot ulceration were recruited for monthly imaging with SFDI. Two patients who ulcerated during the year-long longitudinal study were selected for presentation of their clinical course alongside the dermal microcirculation biomarkers from SFDI.ResultsPatient 1 developed a neuropathic ulcer portended by a focal increase in tissue oxygen saturation and decrease in superficial papillary hemoglobin concentration 3 months prior. Patient 2 developed bilateral neuroischemic ulcers showing decreased tissue oxygen saturation and increased superficial papillary and deep dermal reticular hemoglobin concentrations.ConclusionsWounds of different etiology show unique dermal microcirculatory changes prior to gross ulceration. Before predictive models can be developed from SFDI, biomarker data must be correlated with the clinical course of patients who ulcerate while being followed longitudinally.Trial registration numberNCT03341559.

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