Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/34827
Title: New methods for evaluating physical and thermal comfort properties of orthotic materials used in insoles for patients with diabetes
Authors: Lo, WT
Yick, KL 
Ng, SP
Yip, J 
Keywords: Diabetic foot
Friction
Insole materials
Performance index
Physical properties
Pressure redistribution
Orthotic insoles
Shearing
Thermal comfort properties
Ulceration
Issue Date: 2014
Publisher: VA Health Care
Source: Journal of rehabilitation research and development, 2014, v. 51, no. 2, p. 311-324 How to cite?
Journal: Journal of rehabilitation research and development
Abstract: Orthotic insoles are commonly used in the treatment of the diabetic foot to prevent ulcerations. Choosing suitable insole material is vital for effective foot orthotic treatment. We examined seven types of orthotic materials. In consideration of the key requirements and end uses of orthotic insoles for the diabetic foot, including accommodation, cushioning, and control, we developed test methods for examining important physical properties, such as force reduction and compression properties, insole-skin friction, and shear properties, as well as thermal comfort properties of fabrication materials. A novel performance index that combines various material test results together was also proposed to quantify the overall performance of the insole materials. The investigation confirms that the insole-sock interface has a lower coefficient of friction and shearing stress than those of the insole-skin interface. It is also revealed that material brand and the corresponding density and cell volume, as well as thickness, are closely associated with the performance of moisture absorption and thermal comfort. On the basis of the proposed performance index, practitioners can better understand the properties and performance of various insole materials, thus prescribing suitable orthotic insoles for patients with diabetic foot.
URI: http://hdl.handle.net/10397/34827
ISSN: 0748-7711 (print)
DOI: 10.1682/JRRD.2013.01.0012
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