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Torres WO, Abbott ME, Wang Y, Stuart HS. Skin Sensitivity Assessment Using Smartphone Haptic Feedback. IEEE OPEN JOURNAL OF ENGINEERING IN MEDICINE AND BIOLOGY 2023; 4:216-221. [PMID: 38059068 PMCID: PMC10697294 DOI: 10.1109/ojemb.2023.3328502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 09/21/2023] [Accepted: 10/25/2023] [Indexed: 12/08/2023] Open
Abstract
Goal: This work presents a smartphone application to assess cutaneous sensory perception by establishing Vibrational Perception Thresholds (VPTs). Cutaneous sensory perception diagnostics allow for the early detection and symptom tracking of tactile dysfunction. However, lack of access to healthcare and the limited frequency of current screening tools can leave skin sensation impairments undiscovered or unmonitored. Methods: A 23-participant cross-sectional study in subjects with a range of finger sensation tests Smartphone Established VPTs (SE-VPTs) by varying device vibrational intensity. These are compared against monofilament test scores, a clinical measure of skin sensitivity. Results: We find a strong positive correlation between SE-VPTs and monofilament scores ([Formula: see text] = 0.86, p = 1.65e-07). Conclusions: These results demonstrate the feasibility of using a smartphone as a skin sensation screening tool.
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Affiliation(s)
- Wilson O. Torres
- Embodied Dexterity Group, Department of Mechanical EngineeringUniversity of California BerkeleyBerkeleyCA94720USA
| | - Michael E. Abbott
- Embodied Dexterity Group, Department of Mechanical EngineeringUniversity of California BerkeleyBerkeleyCA94720USA
| | - Yuqing Wang
- Embodied Dexterity Group, Department of Mechanical EngineeringUniversity of California BerkeleyBerkeleyCA94720USA
| | - Hannah S. Stuart
- Embodied Dexterity Group, Department of Mechanical EngineeringUniversity of California BerkeleyBerkeleyCA94720USA
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Fakkel TM, Rinkel WD, Coert JH. Does Lower Extremity Nerve Decompression Surgery Improve Quality of Life? Plast Reconstr Surg 2022; 150:1351-1360. [PMID: 36161790 DOI: 10.1097/prs.0000000000009699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Entrapment neuropathies are more prevalent in patients with diabetes than in healthy patients. The aim of this study was to assess the effects of lower extremity nerve decompression surgery on quality of life and clarify predictors of this surgical outcome and the incidence of surgical site problems. METHODS Patients who underwent lower extremity nerve decompression surgery between September of 2017 and March of 2019 were followed prospectively at the outpatient clinic of University Medical Center Utrecht. The common, superficial, and deep peroneal nerve and tibial nerve at the tarsal tunnel and soleal sling were decompressed if an entrapment was diagnosed. The primary study outcome was quality of life as measured by the Norfolk Quality of Life-Diabetic Neuropathy questionnaire. Secondary outcomes of interest were change in Michigan Neuropathy Screening Instrument score, predictors of the Norfolk score at follow-up, and the occurrence of complications. RESULTS Sixty patients underwent surgery (45 unilateral, 15 bilateral), with a median postoperative follow-up of 13.0 months (interquartile range, 7.3 to 18.0 months). Quality of life improved significantly in this period of observation [baseline median, 46.0 (34.0 to 62.0) versus follow-up median, 37.0 (20.0 to 60.0); p = 0.011], as did Michigan Neuropathy Screening Instrument scores [7.0 (5.0 to 9.0) versus 3.0 (0.0 to 6.5); p < 0.01]. Predictors of quality of life were a higher baseline quality of life score [β, 0.59 ( p = 0.001)], longer follow-up time [β, 2.34 ( p < 0.001)], and hypertension [β, 16.38 ( p = 0.03)]. A total of 26.7 percent of patients had surgical site problems, including wound infections (18.3 percent). CONCLUSIONS Lower extremity nerve decompression surgery significantly improves quality of life by reducing neuropathy symptoms in patients with lower extremity nerve compressions. Attention should be given to lowering the risk of wound complications. CLINICAL QUESTION/LEVEL OF EVIDENCE Therapeutic, III.
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Affiliation(s)
- Tirzah M Fakkel
- From the Department of Plastic, Reconstructive, and Hand Surgery, Utrecht University Medical Center
| | - Willem D Rinkel
- From the Department of Plastic, Reconstructive, and Hand Surgery, Utrecht University Medical Center
| | - J Henk Coert
- From the Department of Plastic, Reconstructive, and Hand Surgery, Utrecht University Medical Center
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Cost-Effectiveness of Lower Extremity Nerve Decompression Surgery in the Prevention of Ulcers and Amputations: A Markov Analysis. Plast Reconstr Surg 2021; 148:1135-1145. [PMID: 34705790 DOI: 10.1097/prs.0000000000008440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND The costs and health effects associated with lower extremity complications in diabetes mellitus are an increasing burden to society. In selected patients, lower extremity nerve decompression is able to reduce symptoms of neuropathy and the concomitant risks of diabetic foot ulcers and amputations. To estimate the health and economic effects of this type of surgery, the cost-effectiveness of this intervention compared to current nonsurgical care was studied. METHODS To estimate the incremental cost-effectiveness of lower extremity nerve decompression over a 10-year period, a Markov model was developed to simulate the onset and progression of diabetic foot disease in patients with diabetes and neuropathy who underwent lower extremity nerve decompression surgery, compared to a group undergoing current nonsurgical care. Mean survival time, health-related quality of life, presence or risk of lower extremity complications, and in-hospital costs were the outcome measures assessed. Data from the Rotterdam Diabetic Foot Study were used as current care, complemented with information from international studies on the epidemiology of diabetic foot disease, resource use, and costs, to feed the model. RESULTS Lower extremity nerve decompression surgery resulted in improved life expectancy (88,369.5 life-years versus 86,513.6 life-years), gain of quality-adjusted life-years (67,652.5 versus 64,082.3), and reduced incidence of foot complications compared to current care (490 versus 1087). The incremental cost-effectiveness analysis was -€59,279.6 per quality-adjusted life-year gained, which is below the Dutch critical threshold of less than €80,000 per quality-adjusted life-year. CONCLUSIONS Decompression surgery of lower extremity nerves improves survival, reduces diabetic foot complications, and is cost saving and cost-effective compared with current care, suggesting considerable socioeconomic benefit for society.
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Aan de Stegge WB, Schut MC, Abu-Hanna A, van Baal JG, van Netten JJ, Bus SA. Development of a prediction model for foot ulcer recurrence in people with diabetes using easy-to-obtain clinical variables. BMJ Open Diabetes Res Care 2021; 9:e002257. [PMID: 34301678 PMCID: PMC8311312 DOI: 10.1136/bmjdrc-2021-002257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 06/30/2021] [Indexed: 12/14/2022] Open
Abstract
INTRODUCTION We aimed to develop a prediction model for foot ulcer recurrence in people with diabetes using easy-to-obtain clinical variables and to validate its predictive performance in order to help risk assessment in this high-risk group. RESEARCH DESIGN AND METHODS We used data from a prospective analysis of 304 people with foot ulcer history who had 18-month follow-up for ulcer outcome. Demographic, disease-related and organization-of-care variables were included as potential predictors. Two logistic regression prediction models were created: model 1 for all recurrent foot ulcers (n=126 events) and model 2 for recurrent plantar foot ulcers (n=70 events). We used 10-fold cross-validation, each including five multiple imputation sets for internal validation. Performance was assessed in terms of discrimination using area under the receiver operating characteristic curve (AUC) (0-1, 1=perfect discrimination), and calibration with the Brier Score (0-1, 0=complete concordance predicted vs observed values) and calibration graphs. RESULTS Predictors in model 1 were: a younger age, more severe peripheral sensory neuropathy, fewer months since healing of previous ulcer, presence of a minor lesion, use of a walking aid and not monitoring foot temperatures at home. Mean AUC for model 1 was 0.69 (2SD 0.040) and mean Brier Score was 0.22 (2SD 0.011). Predictors in model 2 were: a younger age, plantar location of previous ulcer, fewer months since healing of previous ulcer, presence of a minor lesion, consumption of alcohol, use of a walking aid, and foot care received in a university medical center. Mean AUC for model 2 was 0.66 (2SD 0.023) and mean Brier Score was 0.16 (2SD 0.0048). CONCLUSIONS These internally validated prediction models predict with reasonable to good calibration and fair discrimination who is at highest risk of ulcer recurrence. The people at highest risk should be monitored more carefully and treated more intensively than others. TRIAL REGISTRATION NUMBER NTR5403.
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Affiliation(s)
- Wouter B Aan de Stegge
- Amsterdam UMC, Department of Rehabilitation Medicine, University of Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands
- Hospital Group Twente, Department of Surgery, Almelo, The Netherlands
| | - Martijn C Schut
- Amsterdam UMC, Department of Medical Informatics, University of Amsterdam, Amsterdam, The Netherlands
| | - Ameen Abu-Hanna
- Amsterdam UMC, Department of Medical Informatics, University of Amsterdam, Amsterdam, The Netherlands
| | - Jeff G van Baal
- Hospital Group Twente, Department of Surgery, Almelo, The Netherlands
| | - Jaap J van Netten
- Amsterdam UMC, Department of Rehabilitation Medicine, University of Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands
| | - Sicco A Bus
- Amsterdam UMC, Department of Rehabilitation Medicine, University of Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands
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Peterson M, Pingel R, Rolandsson O, Dahlin LB. Vibrotactile perception on the sole of the foot in an older group of people with normal glucose tolerance and type 2 diabetes. SAGE Open Med 2020; 8:2050312120931640. [PMID: 32587694 PMCID: PMC7294473 DOI: 10.1177/2050312120931640] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 05/13/2020] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVES To evaluate vibrotactile sense in an older group of people with normal glucose tolerance and type 2 diabetes relative to other sensory tests. METHODS Vibration perception thresholds on the sole of the foot (Multifrequency vibrametry and Biothesiometer) were compared to the results from evaluation of touch (monofilament), electrophysiology (sural nerve) and thermal sensation (Thermotest®). RESULTS Vibration perception and temperature thresholds, as well as sural nerve function, differed between normal glucose tolerance and type 2 diabetes. Measuring vibration perception thresholds at lower frequencies with multifrequency vibrametry versus biothesiometer provided correlations similar to sural nerve amplitude. Temperature thresholds correlated with vibration perception thresholds and sural nerve function. Monofilaments revealed pathology in only a few participants with type 2 diabetes. CONCLUSIONS In an older group of people, vibration perception thresholds show a correlation similar to sural nerve amplitude on tactile and non-tactile surfaces. Measuring a vibration perception threshold on a tactile surface in type 2 diabetes provides no clear advantage over measuring it on the medial malleolus. In older type 2 diabetes subjects, both large and small diameter nerve fibers are affected.
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Affiliation(s)
- Magnus Peterson
- Department of Public Health and Caring Sciences, Section of Family Medicine and Preventive Medicine, Uppsala University, Uppsala, Sweden
- Academic Primary Healthcare Centre, Stockholm, Sweden
- Division of Family Medicine and Primary Care, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
| | - Ronnie Pingel
- Department of Statistics, Uppsala University, Uppsala, Sweden
| | - Olov Rolandsson
- Department of Public Health and Clinical Medicine, Section of Family Medicine, Umeå University, Umeå, Sweden
| | - Lars B Dahlin
- Department of Translational Medicine—Hand Surgery, Lund University and Skåne University Hospital, Malmö, Sweden
- Department of Hand Surgery, Skåne University Hospital, Malmö, Sweden
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Rinkel WD, van der Oest MJW, Coert JH. Item reduction of the 39-item Rotterdam Diabetic Foot Study Test Battery using decision tree modelling. Diabetes Metab Res Rev 2020; 36:e3291. [PMID: 31955486 PMCID: PMC7317595 DOI: 10.1002/dmrr.3291] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 12/20/2019] [Accepted: 01/15/2020] [Indexed: 12/11/2022]
Abstract
AIMS Pedal sensory loss due to diabetes-related neuropathy can be graded by testing static two-point discrimination (S2PD), moving two-point discrimination (M2PD), static one-point discrimination (S1PD; eg, 10-g monofilament), and vibration sense and is included in the Rotterdam Diabetic Foot (RDF) Study Test Battery. The aim of this study is to investigate if decision tree modelling is able to reduce the number of tests needed in estimating pedal sensation. METHODS The 39-item RDF Study Test Battery (RDF-39) scores were collected from the prospective RDF study and included baseline (n = 416), first follow-up (n = 364), and second follow-up (n = 135) measurements, supplemented with cross-sectional control data from a previous study (n = 196). Decision tree analysis was used to predict total RDF-39 scores using individual test item data. The tree was developed using baseline RDF study data and validated in follow-up and control data. Spearman correlation coefficients assessed the reliability between the decision tree and original RDF-39. RESULTS The tree reduced the number of items from 39 to 3 in estimating the RDF-39 sum score. M2PD (hallux), S2PD (first dorsal web, fifth toe), vibration sense (interphalangeal joint), and S1PD (first dorsal web, fifth toe) measurements proved to be predictive. The correlation coefficients to original scores were high (0.76 to 0.91). CONCLUSIONS The decision tree was successful at reducing the number of RDF Test Battery items to only 3, with high correlation coefficients to the scores of the full test battery. The findings of this study aids medical decision making by time efficiently estimating pedal sensory status with fewer tests needed.
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Affiliation(s)
- Willem D. Rinkel
- Department of Plastic, Reconstructive and Hand SurgeryUtrecht University Medical Center, Utrecht UniversityUtrechtThe Netherlands
- Department of Plastic, Reconstructive and Hand SurgeryFranciscus Gasthuis & VlietlandRotterdamThe Netherlands
| | - Mark J. W. van der Oest
- Department of Plastic, Reconstructive and Hand SurgeryErasmus University Medical CenterRotterdamThe Netherlands
| | - J. Henk Coert
- Department of Plastic, Reconstructive and Hand SurgeryUtrecht University Medical Center, Utrecht UniversityUtrechtThe Netherlands
- Department of Plastic, Reconstructive and Hand SurgeryFranciscus Gasthuis & VlietlandRotterdamThe Netherlands
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Rinkel WD, Fakkel TM, Castro Cabezas M, Birnie E, Coert JH. (Cost-)effectiveness of lower extremity nerve decompression surgery in subjects with diabetes: the DeCompression (DECO) trial-study protocol for a randomised controlled trial. BMJ Open 2020; 10:e035644. [PMID: 32341044 PMCID: PMC7204866 DOI: 10.1136/bmjopen-2019-035644] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2019] [Revised: 03/21/2020] [Accepted: 04/07/2020] [Indexed: 11/04/2022] Open
Abstract
INTRODUCTION The peripheral nerves of patients with diabetes are often pathologically swollen, which results in entrapment at places of anatomical narrowing. This results in nerve dysfunction. Surgical treatment of compression neuropathies in the lower extremities (lower extremity nerve decompression (LEND)) results in relief of symptoms and gain in peripheral nerve function, which may lead to less sensory loss (short term) and less associated detrimental effects including foot ulceration and amputations, and lower costs (long term). The aim of the DeCompression trial is to evaluate the effectiveness and (cost-)effectiveness of surgical decompression of compressed lower extremity nerves (LEND surgery) compared with patients treated with conventional (non-surgical) care. METHODS AND ANALYSIS A stratified randomised (1 to 1) controlled trial comparing LEND surgery (intervention) with conventional non-surgical care (control strategy) in subjects with diabetes with problems of neuropathy due to compression neuropathies in the lower extremity. Randomisation is stratified for participating hospital (n=11) and gender. Patients and controls have the same follow-up at 1.5, 3, 6, 9, 12, 18, 24 and 48 months. Participants (n=344) will be recruited in 12 months and enrolled in all affiliated hospitals in which they receive both the intervention or conventional non-surgical care and follow-up. Outcome assessors are blinded to group assignment. PRIMARY OUTCOME disease-specific quality of life (Norfolk Quality of Life Questionnaire-Diabetic Neuropathy). SECONDARY OUTCOMES health-related quality of life (EuroQoL 5-dimension 5-level (EQ-5D5L), 36-item Short Form (SF-36)), plantar sensation (Rotterdam Diabetic Foot Test Battery), incidence of ulcerations/amputations, resource use and productivity loss (Medical Cost Questionnaire, Productivity Cost Questionnaire) during follow-up. The incremental cost-effectiveness ratio will be estimated on the basis of the collected empirical data and a cost-utility model. ETHICS AND DISSEMINATION Ethics approval has been granted by the Medical Research Ethics Committee of Utrecht University Medical Center (reference: NL68312.041.19v5, protocol number: 19-335/M). Dissemination of results will be via journal articles and presentations at national and international conferences. TRIAL REGISTRATION NUMBER NetherlandsTrial Registry NL7664.
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Affiliation(s)
- Willem D Rinkel
- Department of Plastic-, Reconstructive- and Hand Surgery, Utrecht University Medical Center, Utrecht, The Netherlands
| | - Tirzah M Fakkel
- Department of Plastic-, Reconstructive- and Hand Surgery, Utrecht University Medical Center, Utrecht, The Netherlands
| | - Manuel Castro Cabezas
- Department of Internal Medicine, Franciscus Gasthuis en Vlietland, Rotterdam, The Netherlands
| | - Erwin Birnie
- Department of Plastic-, Reconstructive- and Hand Surgery, Utrecht University Medical Center, Utrecht, The Netherlands
- Department of Genetics, University Medical Center Groningen, Groningen, The Netherlands
| | - J Henk Coert
- Department of Plastic-, Reconstructive- and Hand Surgery, Utrecht University Medical Center, Utrecht, The Netherlands
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Construction and Validation of an Instrument for Assessing the Feet of Persons with Diabetes. Adv Skin Wound Care 2020; 33:267-271. [PMID: 32304450 DOI: 10.1097/01.asw.0000658588.28614.96] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To construct and validate an assessment instrument to evaluate the feet of people with diabetes mellitus in Brazil. METHODS Methodological research developed in three stages: construction of the Assessment Instrument for the Feet of People with Diabetes Mellitus, validation of face and content validity, and field research with 131 participating patients. The Pearson (r) and Spearman correlation coefficients (ρ) were used for criterion validity. To test reliability, the internal consistency of the Cronbach α domains was evaluated and simple κ, weighted κ, and intraclass correlation coefficients for interobserver evaluation were determined. RESULTS The instrument demonstrated validity and reliability. The content validity index represented a high internal consistency (α > .70). The interclass correlation coefficient was high (>0.98). The Pearson (r) and Spearman (ρ) correlation tests confirmed a correlation between the two variables. CONCLUSIONS The instrument was valid and reliable for assessing the feet of people with diabetes mellitus in Brazil. Future studies should identify the cut off point for the diagnosis of neuropathic and vascular impairment of the feet of diabetic persons through appropriate statistical methods.
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Rinkel WD, Castro Cabezas M, Birnie E, Coert JH. The natural history of tarsal tunnel syndrome in diabetic subjects. J Plast Reconstr Aesthet Surg 2020; 73:1482-1489. [PMID: 32276769 DOI: 10.1016/j.bjps.2020.02.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 02/11/2020] [Indexed: 01/13/2023]
Abstract
INTRODUCTION Tibial nerve entrapment is highly prevalent in diabetic subjects, resulting in significantly more neuropathic complaints and concomitant sensory disturbances. The study aim was to assess the impact of tarsal tunnel syndrome (TTS) and sensory loss at baseline on incident diabetic foot ulceration (DFU) in diabetic patients, since decompressing the tibial nerve might change the natural history of the disease. METHODS In this study, 113 subjects with TTS (69 bilateral, 23 left-sided and 21 right-sided) participating in the prospective Rotterdam Diabetic Foot Study were compared to 303 diabetic controls without TTS, regarding incident DFU. Kaplan-Meier analysis and Cox's regression analysis were used to determine the independent hazard of baseline variables for new DFU. RESULTS The median observation period was 836.5 days (IQR, 459-1077.8). In bilateral TTS, 17.4% (95% CI: 8.4-26.3%) of subjects experienced DFU versus 8.3% (95% CI: 5.1-11.6%) in controls (left or right) during follow-up (p = 0.0036). In left-sided TTS, no subjects versus 6.2% (95% CI: 3.4-9.0%) in controls had DFUs (p = 0.243). Incident ulceration was seen in 14.3% (95% CI: -0.7% to -29.3%) of right-sided TTS subjects versus 4.1% (95% CI: 1.5-6.3%) in controls (p = 0.034). Besides HbA1c, diminished sensation at the hallux independently increased the risk of ulceration, in patients with (HR: 4.692, p = 0.003) and without (HR: 2.307, p = 0.002) prior DFU. DISCUSSION Elevated sensory thresholds in TTS render diabetic patients at a higher risk for DFU. With effective surgery, TTS is likely to be an amenable factor to potentially prevent diabetic foot disease and thereby reduce amputation risk. LEVEL OF EVIDENCE II.
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Affiliation(s)
- Willem D Rinkel
- Department of Plastic-, Reconstructive- and Hand Surgery, Franciscus Gasthuis & Vlietland, Rotterdam, the Netherlands; Department of Plastic-, Reconstructive- and Hand Surgery, Utrecht University Medical Center, Utrecht, the Netherlands.
| | - Manuel Castro Cabezas
- Department of Internal Medicine/Centre for Diabetes, Endocrinology and Vascular Medicine, Franciscus Gasthuis & Vlietland, Rotterdam, the Netherlands
| | - Erwin Birnie
- Department of Statistics and Education, Franciscus Gasthuis & Vlietland, Rotterdam, the Netherlands; Department of Genetics, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - J Henk Coert
- Department of Plastic-, Reconstructive- and Hand Surgery, Franciscus Gasthuis & Vlietland, Rotterdam, the Netherlands; Department of Plastic-, Reconstructive- and Hand Surgery, Utrecht University Medical Center, Utrecht, the Netherlands
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Derakhshandeh H, Aghabaglou F, McCarthy A, Mostafavi A, Wiseman C, Bonick Z, Ghanavati I, Harris S, Kreikemeier-Bower C, Basri SMM, Rosenbohm J, Yang R, Mostafalu P, Orgill D, Tamayol A. A Wirelessly Controlled Smart Bandage with 3D-Printed Miniaturized Needle Arrays. ADVANCED FUNCTIONAL MATERIALS 2020; 30:1905544. [PMID: 34354556 PMCID: PMC8336080 DOI: 10.1002/adfm.201905544] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Indexed: 05/18/2023]
Abstract
Chronic wounds are one of the most devastating complications of diabetes and are the leading cause of nontraumatic limb amputation. Despite the progress in identifying factors and promising in vitro results for the treatment of chronic wounds, their clinical translation is limited. Given the range of disruptive processes necessary for wound healing, different pharmacological agents are needed at different stages of tissue regeneration. This requires the development of wearable devices that can deliver agents to critical layers of the wound bed in a minimally invasive fashion. Here, for the first time, a programmable platform is engineered that is capable of actively delivering a variety of drugs with independent temporal profiles through miniaturized needles into deeper layers of the wound bed. The delivery of vascular endothelial growth factor (VEGF) through the miniaturized needle arrays demonstrates that, in addition to the selection of suitable therapeutics, the delivery method and their spatial distribution within the wound bed is equally important. Administration of VEGF to chronic dermal wounds of diabetic mice using the programmable platform shows a significant increase in wound closure, re-epithelialization, angiogenesis, and hair growth when compared to standard topical delivery of therapeutics.
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Affiliation(s)
- Hossein Derakhshandeh
- Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE 68588, USA
| | - Fariba Aghabaglou
- Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE 68588, USA
| | - Alec McCarthy
- Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE 68588, USA
| | - Azadeh Mostafavi
- Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE 68588, USA
| | - Chris Wiseman
- Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE 68588, USA
| | - Zack Bonick
- Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE 68588, USA
| | - Ian Ghanavati
- Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE 68588, USA
| | - Seth Harris
- Veterinary Diagnostic Center, School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln Lincoln, NE 68583, USA
| | | | - Seyed Masoud Moosavi Basri
- Department of Biomedical Engineering, American University of Sharjah, Sharjah 26666, United Arab Emirates
| | - Jordan Rosenbohm
- Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE 68588, USA
| | - Ruiguo Yang
- Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE 68588, USA
| | - Pooria Mostafalu
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02139, USA
| | - Dennis Orgill
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Ali Tamayol
- Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE 68588, USA
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Rinkel WD, van Nieuwkasteele S, Castro Cabezas M, van Neck JW, Birnie E, Coert JH. Balance, risk of falls, risk factors and fall-related costs in individuals with diabetes. Diabetes Res Clin Pract 2019; 158:107930. [PMID: 31738998 DOI: 10.1016/j.diabres.2019.107930] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 11/06/2019] [Accepted: 11/13/2019] [Indexed: 12/11/2022]
Abstract
AIMS Sensory loss and impaired balance are considered risk factors of incident falls. The aim of this study was to assess the relationship between degree of foot sensation and balance, risk of falls, incidence of fall-related injuries and costs in a cohort of patients with diabetes. METHODS (Non)-neuropathic subjects participating in the Rotterdam Diabetic Foot Study were followed prospectively. Subjects underwent sensory testing of the feet (39 item Rotterdam Diabetic Foot Study Test Battery (RDF-39)); balance was assessed at the second follow-up (Brief-BESTest) as were data on incident falls. Medical records and financial data were abstracted to estimate fall-related morbidity and in-hospital costs. RESULTS A higher RDF-39 score, cerebral artery disease, type 2 diabetes, height and age were predictors of the Brief-BESTest total score. 41/296 patients (13.9%) reported two or more falls during follow-up. Predictors for recurrent falls were a higher RDF-39 score (aOR: 1.124, p < 0.0005), male gender (aOR: 0.319, p = 0.016), age (aOR: 0.938, p = 0.003) and type 2 diabetes (aOR: 3.157, p = 0.100). Thirty-one patients used medical resources (median US$ 440.45 (IQR: 179-1162). CONCLUSIONS Degree of sensory loss correlates significantly with an increased imbalance and risk of falls. The RDF-39 may be used as stratification tool in medical decision-making and patient information.
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Affiliation(s)
- Willem D Rinkel
- Department of Plastic-, Reconstructive- and Hand Surgery, Utrecht University Medical Center, Utrecht University, Utrecht, the Netherlands; Department of Plastic-, Reconstructive- and Hand Surgery, Franciscus Gasthuis & Vlietland, Rotterdam, the Netherlands.
| | - Shelly van Nieuwkasteele
- Department of Plastic-, Reconstructive- and Hand Surgery, Franciscus Gasthuis & Vlietland, Rotterdam, the Netherlands; Department of Plastic-, Reconstructive- and Hand Surgery, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Manuel Castro Cabezas
- Department of Internal Medicine/Centre for Diabetes, Endocrinology and Vascular Medicine, Franciscus Gasthuis & Vlietland, Rotterdam, the Netherlands
| | - Johan W van Neck
- Department of Plastic-, Reconstructive- and Hand Surgery, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Erwin Birnie
- Department of Statistics and Education, Franciscus Academy, Franciscus Gasthuis & Vlietland, Rotterdam, the Netherlands; Department of Genetics, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - J Henk Coert
- Department of Plastic-, Reconstructive- and Hand Surgery, Utrecht University Medical Center, Utrecht University, Utrecht, the Netherlands; Department of Plastic-, Reconstructive- and Hand Surgery, Franciscus Gasthuis & Vlietland, Rotterdam, the Netherlands
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Boegle AK, Narayanaswami P. Sense, sense‐ability, and all that Mokken jazz. Muscle Nerve 2019; 60:496-498. [DOI: 10.1002/mus.26685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 08/22/2019] [Accepted: 08/23/2019] [Indexed: 11/05/2022]
Affiliation(s)
- Aimee K. Boegle
- Department of Neurology, Division of Neuromuscular Diseases Beth Israel Deaconess Medical Center Boston Massachusetts
- Harvard Medical School Boston Massachusetts
| | - Pushpa Narayanaswami
- Department of Neurology, Division of Neuromuscular Diseases Beth Israel Deaconess Medical Center Boston Massachusetts
- Harvard Medical School Boston Massachusetts
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Rinkel WD, Aziz MH, Van Neck JW, Cabezas MC, van der Ark LA, Coert JH. Development of grading scales of pedal sensory loss using Mokken scale analysis on the Rotterdam Diabetic Foot Study Test Battery data. Muscle Nerve 2019; 60:520-527. [PMID: 31281987 PMCID: PMC6852564 DOI: 10.1002/mus.26628] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 06/24/2019] [Accepted: 07/01/2019] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Loss of sensation due to diabetes-related neuropathy often leads to diabetic foot ulceration. Several test instruments are used to assess sensation, such as static and moving 2-point discrimination (S2PD, M2PD), monofilaments, and tuning forks. METHODS Mokken scale analysis was applied to the Rotterdam Diabetic Foot Study data to select hierarchies of tests to construct measurement scales. RESULTS We developed 39-item and 31-item scales to measure loss of sensation for research purposes and a 13-item scale for clinical practice. All instruments were strongly scalable and reliable. The 39 items can be classified into 5 hierarchically ordered core clusters: S2PD, M2PD, vibration sense, monofilaments, and prior ulcer or amputation. DISCUSSION Guided by the presented scales, clinicians may better classify the grade of sensory loss in diabetic patients' feet. Thus, a more personalized approach concerning individual recommendations, intervention strategies, and patient information may be applied.
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Affiliation(s)
- Willem D Rinkel
- Department of Plastic, Reconstructive, and Hand Surgery, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Plastic, Reconstructive, and Hand Surgery, Franciscus Gasthuis & Vlietland, Rotterdam, The Netherlands.,Department of Plastic, Reconstructive and Hand Surgery, University Medical Center Utrecht, Utrecht, The Netherlands
| | - M Hosein Aziz
- Department of Plastic, Reconstructive, and Hand Surgery, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Johan W Van Neck
- Department of Plastic, Reconstructive, and Hand Surgery, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Manuel Castro Cabezas
- Department of Internal Medicine/Centre for Diabetes, Endocrinology and Vascular Medicine, Franciscus Gasthuis & Vlietland, Rotterdam, The Netherlands
| | - L Andries van der Ark
- Faculty of Social and Behavioural Sciences, Research Institute of Child Development and Education, University of Amsterdam, Amsterdam, The Netherlands
| | - J Henk Coert
- Department of Plastic, Reconstructive, and Hand Surgery, Franciscus Gasthuis & Vlietland, Rotterdam, The Netherlands.,Department of Plastic, Reconstructive and Hand Surgery, University Medical Center Utrecht, Utrecht, The Netherlands
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Rinkel WD, van der Oest MJW, Dijkstra DA, Castro Cabezas M, Coert JH. Predicting ulcer-free survival using the discriminative value of screening test locations. Diabetes Metab Res Rev 2019; 35:e3119. [PMID: 30575290 DOI: 10.1002/dmrr.3119] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 12/16/2018] [Accepted: 12/16/2018] [Indexed: 01/19/2023]
Abstract
BACKGROUND Current guidelines recommend screening the feet of diabetic subjects with a 10-g monofilament or tuning fork. We investigated which tests and locations on the feet have the best predictive value regarding 1-year ulcer-free survival in diabetic subjects participating in the prospective Rotterdam Diabetic Foot Study. METHODS Decision tree analysis was used to predict ulcer-free survival based on responses from individual test locations (monofilaments on 10 sites, vibration sense was tested on both halluces and medial malleoli). Separate trees for patients with and without a history of diabetic foot ulcer (DFU) were developed. RESULTS Four hundred sixteen subjects (mean [SD] age, 61.8 years [12.4]; range, 21.6-90.2) were measured, of whom 24 developed new DFUs. Three tests exhibited discriminative and predictive properties: testing vibration sense on the medial malleolus and monofilament testing on heel and hallux. The decision tree to predict ulcer-free survival in patients with a history of DFU yielded a sensitivity of 87.0%, which was 99.6% for the tree of patients without a history of DFU. CONCLUSION The findings of this study aids medical decision making by discriminating between high- and low-risk patients of developing DFU using selective testing on sites with predictive properties.
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Affiliation(s)
- Willem D Rinkel
- Department of Plastic, Reconstructive, and Hand surgery, Erasmus University Medical Center, Rotterdam, the Netherlands
- Department of Plastic, Reconstructive, and Hand surgery, Franciscus Gasthuis & Vlietland, Rotterdam, the Netherlands
- Department of Plastic, Reconstructive, and Hand surgery, University Medical Center Utrecht (UMCU), Utrecht, the Netherlands
| | - Mark J W van der Oest
- Department of Plastic, Reconstructive, and Hand surgery, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Don A Dijkstra
- Department of Internal Medicine/Centre for Diabetes, Endocrinology and Vascular Medicine, Franciscus Gasthuis & Vlietland, Rotterdam, the Netherlands
| | - Manuel Castro Cabezas
- Department of Internal Medicine/Centre for Diabetes, Endocrinology and Vascular Medicine, Franciscus Gasthuis & Vlietland, Rotterdam, the Netherlands
| | - Jan Hendrik Coert
- Department of Plastic, Reconstructive, and Hand surgery, Erasmus University Medical Center, Rotterdam, the Netherlands
- Department of Plastic, Reconstructive, and Hand surgery, Franciscus Gasthuis & Vlietland, Rotterdam, the Netherlands
- Department of Plastic, Reconstructive, and Hand surgery, University Medical Center Utrecht (UMCU), Utrecht, the Netherlands
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Two-Point Discrimination Predicts Pain Relief after Lower Limb Nerve Decompression for Painful Diabetic Peripheral Neuropathy. Plast Reconstr Surg 2018; 143:446e-447e. [PMID: 30516755 DOI: 10.1097/prs.0000000000005244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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