Evaluation of a Venous-Return Assist Device (Venowave) to Treat Post-Thrombotic Syndrome: A Randomized Controlled Trial

Inclusion Criteria: * Past History of objectively documented deep vein thrombosis * Daily leg swelling with discomfort (i.e. report at least one of the following symptoms: heavy legs, aching legs and/or throbbing) for a minimum of 6 months * Over 18 years of age (and of either gender). * Villalta score of greater than 14(i.e.severe post phlebitic syndrome) Exclusion Criteria: * Episode of objectively documented deep vein thrombosis occurred less than 6 months before recruitment * Subjects report that their symptoms have been unstable (worsening, improving or variable over the previous month). * Active venous ulceration * Baseline leg circumference greater than 50 cm (cuff will not fit subject) * Symptomatic peripheral arterial disease Peripheral neuropathy