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No / High compression therapy, whether with bandage systems or hosiery, is the accepted treatment of lower limb venous ulceration. Compression has not only been shown to improve healing, it has been demonstrated to reduce oedema and improve tissue oxygen levels (Stacey et al, 1990), reversing some of the changes associated with chronic venous insufficiency (Vandongen and Stacey, 2000). The introduction of multilayer high compression bandage systems in the late 1980s, and subsequent improvements in bandage textiles and design, have undoubtedly improved outcomes for many patients. However, compression alone does not address the underlying pathology of venous ulceration, chronic venous insufficiency (CVI), and without treatment CVI continues to cause skin damage and increases the risk of recurrent ulceration. In 1999, Nelzen emphasised that compression treatment has been used since the days of Hippocrates and yet has not solved the problem of leg ulceration (Nelzen, 1999).

Yes / Soft silicone's flexibility, adhesive capacity and non-toxic, non-odourous and hypoallergenic nature have made it an established material for adhesive and protective therapeutic devices. In wound care, silicone is a component of contact layer dressings for superficial wounds and silicone gel sheeting for reducing the risk of scarring, as well as of barriers for incontinence-associated dermatitis. Regarding stoma accessories, silicone is established in barrier films to prevent contact dermatitis, adhesive removers to prevent skin stripping and filler gels to prevent appliance leaks. Until recently, silicone has not been used in stoma appliances flanges, as its hydrophobic nature has not allowed for moisture management to permit trans-epidermal water loss and prevent maceration. Traditional hydrocolloid appliances manage moisture by absorbing water, but this can lead to saturation and moisture-associated skin damage (MASD), as well as increased adhesion and resultant skin tears on removal, known as medical adhesive-related skin injury (MARSI). However, novel silicone compounds have been developed with a distinct evaporation-based mechanism of moisture management. This uses colloidal separation to allow the passage of water vapour at a rate equivalent to normal trans-epidermal water loss. It has been shown to minimise MASD, increase wear time and permit atraumatic removal without the use of adhesive solvents. Trio Healthcare has introduced this technology with a range of silicone-based flange extenders and is working with the University of Bradford Centre for Skin Sciences on prototype silicone-based stoma appliance flanges designed to significantly reduce the incidence of peristomal skin complications, such as MARSI and MASD. It is hoped that this will also increase appliance wear time, reduce costs and improve patient quality of life.