Can surgery on leg veins cause DVT?

The DVT risk associated with surgery can be quite significant. Reports of five per cent DVT after varicose vein operation on one leg, and 15 per cent after varicose vein operation on both legs, have appeared in scientific literature. The risk varies depending on patient factors such as age, weight, gender and degree of mobility after surgery. Most patients are discharged on the same day and are mobile fairly quickly, which is important in prevention of DVT.