During the last two decades new methods for investigating the venous system in the lower limbs have brought a fresh understanding and transformed many aspects of management. The instruments of research have now become the tools of diagnosis - capable of great accuracy. However, it is not always easy to decide which of the many sophisticated techniques is the most suitable for everyday use. This text has been written with this in mind and provides a comprehensive practical guide, in keeping with modern thought, on the diagnosis and management of venous disorders, deep vein thrombosis, and oedema in the lower limb.