I) Introduction
Background. The use of compression therapy is mainly based on tradition and experience. Randomized controlled trials demonstrating clinical effects in different indications are rare or non-existing. A clear proof of effectiveness for different compression devices endorsed by evidence based medicine will be a prerequisite for reimbursement by health budgets in the near future. Against this background a group of experts has discussed and approved the following position document under the auspices of the International Union of Phlebology. Indications for compression therapy in phlebology and lymphology are mainly: 1. Chronic venous disorders (CEAP C0-C6 ) (1) 2. Acute venous diseases 3. Lymphoedema. The following 3 questions are discussed for every single indication: ¥ What is done? (Current practice and rationale) ¥ What do we know? (Level of recommendation based on present knowledge) ¥ What do we need to know? (Proposals for randomized controlled trials on compression therapy)