ABSTRACT
Chronic deep venous disease can be due to venous obstruction, reflux or both. Clinical features consequent on past deep vein thrombosis constitute the post-thrombotic syndrome. The post-thrombotic syndrome can occur as a long-term complication of deep vein thrombosis due to persisting obstruction or to loss of valve function from damage after recanalization. Computed tomography venography shows thrombus that is often eccentric, partly adherent to the vein wall, and partly recanalized, with a heterogeneous lumen and intraluminal strands. Specialist units routinely measure physiological variables by air plethysmography, ambulatory venous pressures, arm/foot venous pressure differential and femoral vein pressure. A patient with femoro-popliteal reflux can be treated with a short segment of axillary vein containing a valve, placed as an interposition graft in the proximal femoral vein or popliteal vein. The aim is to reduce vein dissection and the risk of venous dilatation which can complicate open repair.
