Prediction of Compression of Knitted Orthopaedic Supports by Inlay-Yarn Properties

Ališauskienė, Diana; Mikučionienė, Daiva

doi:10.5755/j01.ms.20.3.4048

Cited by 8 publications

(20 citation statements)

References 9 publications

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“…As it was stated in our earlier work [16] and is seen from the results presented in Figure 3, the influence of total linear density of the elastomeric inlay-yarn on tensile force is not significant, if the linear density of elastane core is similar (in this case -47 tex and 47.5 tex), the elongation of the yarn does not exceed 50% (in this caseuntil 20%) and the inlay-yarn is inserted in every course of the knit. Orthopaedic supports sustain low elongation during exploitation and the inlay-yarn is stretched so that only elastomeric core is affected by the tensile force.…”

Section: Resultssupporting

confidence: 73%

“…practically do not have significant influence on tensile force values as elastomeric yarns are used in orthopaedic supports in the limits of extension (until 30%) in which only elastomeric core is affected [16].…”

Section: Resultsmentioning

confidence: 99%

“…The ways how textile materials stretch under applied stresses play an important role in their processing and enduse. Many studies have been made on stretchability of knitted fabrics [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

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Influence of knitted orthopaedic support construction on compression generated by the support

Mikučionienė

Milašiūtė

2016

Journal of Industrial Textiles

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This study attempts to investigate the influence of the inlay-yarn insertion density into a knitted structure and of the area of a rigid element integrated into a knitted orthopaedic support on a compression generated by the support. The samples were made on a flat double needle-bed knitting machine with a laid-in structure knitted on a rib 1 × 1 pattern base, differing in the inlay-yarn insertion density. In general, research studies analyse compression and other properties of compressive stockings and do not investigate the influence of non-textile parts usually used in the knitted orthopaedic support. It was established that the linear density of the inlay-yarn has a visible influence on the compression generated by knitted support when inlay-yarn insertion density is every other course and less. When inlay-yarn is inserted into every course, the generated compression is the highest and the influence of inlay-yarn linear density on the generated compression is significant. It was found that compression of the support increases depending on the area of the rigid element in the knitted support. The rate of influence of the rigid area on compression rises with an increase in the inlay-yarn insertion density and in the elongation value. By designing a knitted compressive orthopaedic support, it is necessary to find an optimal ratio between an inlay-yarn insertion density and an area of a rigid element, thereby achieving the best compressive, wear comfort and economical result.

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Section: Resultssupporting

confidence: 73%

Section: Resultsmentioning

confidence: 99%

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Influence of knitted orthopaedic support construction on compression generated by the support

Mikučionienė

Milašiūtė

2016

Journal of Industrial Textiles

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“…yarn density, twist, draw ratio structures), fabric structural design, fabrics of quite different density and thickness may be produced leading to the capacity to apply different pressures, and thus perform differently during use. 43,71–74 In graduated compression stockings for example, thinner (mean 0.35 mm) and lighter fabrics (mass per unit area, mean 85 g/m 2 ) were shown to exert less pressure than thicker, heavier fabrics. 75…”

Section: Considerations Affecting Use Of Compression Therapymentioning

confidence: 99%

Textile-based compression therapy in managing chronic oedema: Complex interactions

2020

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Background Compression is a common therapy for management of chronic disease, including oedema of the lower limb. Modern compression interventions exert pressure on the lower limb through use of one or more materials which exert pressure against the limb over time. Where these materials are textiles, they range from elastic to inelastic, and are produced using knitting, weaving, or other textile technologies which can be manipulated to control performance properties. Thus, understanding of both the materials/textiles and the human body is needed if the most appropriate compression device and treatment strategy is to be used. Neither is independent of the other. This review aims to enhance understanding of critical textile performance properties and how selection of textiles may affect treatment efficacy when managing chronic oedema of the lower limb. Method Relevant papers for review were identified via PubMed Central® library, and Google Scholar using keywords associated with textile-based treatments of the oedematous lower limb and wider interdisciplinary factors. Results Assessment of the disorder, the severity of oedema, and location of fluid accumulation are required to inform treatment of chronic oedema. While the need to understand the patient is well established (e.g. age, sex, body mass index, skin thickness and colour, patient compliance with treatment), information about preferred compression systems and material structures, and inherent properties of these, is generally lacking. Conclusion Greater detail about materials used (e.g. fabric structure, number and order of layers, fibre content) and patient diagnosis (e.g. underlying cause, severity, location of oedema; patient age and sex; evidence of compliance with treatment; pressure exerted; lower leg shape, size, and properties of the tissue) is needed to facilitate advances in efficacy of compression treatment. Reduced limb swelling with a textile-based treatment occurs simultaneously with changes to the textile itself. Textiles cannot be considered inert.

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“…cotton, polyamide, polyester, viscose, polypropylene) around a stretchable core such as latex or polyurethane (PU) as shown in Figure 9(d), which are commonly applied as inlay threads to knit or weave with ground yarns, to deliver compression fabrics with specific thickness, tension and stiffness. [111][112][113][114][115][116][117][118][119][120] The dimensional thickness of inlay yarn is commonly expressed by using linear density with units of denier (den), tex or dtex. Denier is defined as the mass in grams per 9000 meters (1 den ¼ 0.111 tex and 1.110 dtex).…”

Section: Compression Textiles: Materials Structures and Fabrication Technologymentioning

confidence: 99%

A critical review on compression textiles for compression therapy: Textile-based compression interventions for chronic venous insufficiency

Liu

Guo

Lao

et al. 2016

Textile Research Journal

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Compression textiles as adjuvant physical interventions are increasingly applied for prophylaxis and treatment of chronic venous insufficiency (CVI), providing benefits of calibrated compression and controlled stretch. Pressure dosage delivered and mechanical properties (stiffness, elasticity and hysteresis) are determined by material nature, stitches structures, fabrication technology and delivery modes. Laplace’s Law and Pascal’s Law contribute to elaborate the static and dynamic working mechanisms behind the interaction between compression interventions and a biological body. However, there is still a lack of sufficient awareness on compression materials, and there is controversy regarding the best solution for clinical application of compression. This study integrates the views from physiology, pathophysiology, biomechanics, material science and textile engineering, to review and clarify physical–mechanical characteristics of compression materials, working mechanisms of textile-based compression interventions and their medical benefits in chronic venous insufficiency treatment. The aim is to enhance understanding of compression textiles applied in compression therapy, and to facilitate cooperation among multiple parties working in related supply chains, thus promoting textile-based compression interventions in chronic venous insufficiency treatment and growth of technical textiles applied in healthcare, medical and rehabilitation fields.

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Prediction of Compression of Knitted Orthopaedic Supports by Inlay-Yarn Properties

Cited by 8 publications

References 9 publications

Influence of knitted orthopaedic support construction on compression generated by the support

Influence of knitted orthopaedic support construction on compression generated by the support

Textile-based compression therapy in managing chronic oedema: Complex interactions

A critical review on compression textiles for compression therapy: Textile-based compression interventions for chronic venous insufficiency

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