An approach to examine dynamic behavior of medical compression bandage

Abstract

Compression bandages are subjected to a repeated and prolonged spatial deformation, at knee and ankle positions, during ambulatory conditions of the lower limb. The important dynamic variables like speed, the amount of the degree of bending at knees and ankles, etc. could affect the long-term compression behavior of the bandage. The aim of this study was to investigate the dynamic behavior of medical compression bandage using a newly designed dynamic leg-segment model. A prototype was especially designed to simulate the dynamic behavior of the human leg using a mannequin limb. The influence of major factors, i.e. the speed of the reciprocating movement of the mannequin, the amount of displacement amplitude of the reciprocating movement of the mannequin (i.e. step size), and the applied extension level given to the bandage, on the sub-bandage pressure exerted by the bandage on the mannequin surface were analyzed using this model. It was observed that the rate and amount of the sub-bandage pressure drop increased under dynamic mode of the mannequin as compared to static mode. A higher drop in the sub-bandage pressure under dynamic mode was obtained with increasing the amount of displacement amplitude of the mannequin leg and also with increasing the applied extension level given to the bandage. The ambulatory conditions of the leg result in cyclic deformations in the wrapped bandage, and this influences the sub-bandage pressure variations over time. The proposed leg-segment model enables to assess dynamic behavior of different compression bandages under customized conditions and hence could be used for comparing and pre-evaluating different bandage products.

Nonwoven Padding for Compression Management

“…The main parameter responsible for clinical efficiency is the interface pressure [19][20][21][22][23][24][25][26]. Interface pressure is defined as the pressure exerted by the compression system over the surface of skin.…”

Development of a Care Labelling Process for Compression Stockings Based on Natural (Cotton) Fibers

“…The effectiveness of the compression treatment is very much dependent on the interface pressure between the textiles and the skin, and the literature shows that factors such as limb shape, size and properties of compression products do have a significant influence on this pressure [ 9 , 10 , 11 ]. The changes occurring in the interface pressure applied by a medical compression product is, on the other hand, quite important because such changes directly affect the potency of the treatment of the compression garment [ 5 , 12 , 13 , 14 , 15 ]. In that respect, it should be noted that the success of compression treatment is very much determined by the fiber and fabric construction employed in a product.…”

“…Synthetic fibers (e.g., nylon, PET, elastane) have low stress relaxation in comparison to cotton fiber because of their higher relaxation time, whereas elastomeric yarns keep the internal stress for a longer time because of their good elastic properties. This is one of the reasons why elastomeric yarns are utilized for medical stockings and other compression garments [ 12 , 13 , 22 , 23 ].…”

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

“…A manikin study has focused on the dynamic condition of the lower leg, movement and bending of ankle and knee positions, showing that the dropped amount of bandage-manikin interface pressure over time is higher than that which occurs in the static condition. 34 This drop in interface pressure under dynamic conditions was increased by enhancing the displacement amplitude of the manikin, and tension level in the compression fabric. 34 However, changes in the radius of curvature of the leg while performing activities i.e.…”

“…34 This drop in interface pressure under dynamic conditions was increased by enhancing the displacement amplitude of the manikin, and tension level in the compression fabric. 34 However, changes in the radius of curvature of the leg while performing activities i.e. walking, running, or jogging, and bandaging techniques were not considered in this study.…”