Pressure Curves, Static and Dynamic Stiffness of Different Two-Component Compression Systems for the Treatment of Chronic Edema of the Lower Limbs

Compression is a cornerstone modality in edema treatment. Different types of bandages are available in clinical practice. Short-stretch bandages are commonly used; however, newer technologies such as the two-component compression system are available as well. This study assesses the pressure curves and static and dynamic stiffness (Static Stiffness Index [SSI] and Dynamic Stiffness Index [DSI]) of two different two-component compression systems, Coban and CoFlex, for edema treatment. For this prospective cohort study, 12 healthy volunteers were recruited. The healthy volunteers wore both two-component compression systems for 48 hours. Pressure sensors (PicoPress^®; Microlab, Italy) were placed at 10 and 25 cm above the internal malleolus and 10 pressure readings were used to obtain pressure curves. The SSI and DSI were assessed. Additionally, comfort (ICC compression questionnaire) and adverse events were assessed as well. Both two-component compression systems exert a sufficient amount of sub-bandage pressure, although CoFlex exerts systematically significantly lower pressure in comparison with Coban. This difference in sub-bandage pressure remains constant over 48 hours. Both two-component compression systems are sufficiently stiff (stiffness >15 mmHg) and remain stiff over time. Both two-component compression systems have pressure curves that are high enough to motivate their use in the treatment of chronic edema. Additionally, both systems were found to be comfortable and have clinically effective SSI and DSI values.