Vein glue versus radiofrequency therapy – 7 years: For more than 20 years now, truncal varicose veins has increasingly been treated endovenously with catheter support. It all began with the rather cumbersome VNUS® Closure process and the easier-to-use linear laser. This was followed in 2006/2007 by the bipolar RFITT® catheter and the VNUS® ClosureFast system as well as the radial laser. However, it should be said that following historical medical truth, endovenous sclerotherapy has been developed and used since 1911. And already in the late 20s, many surgeons in Germany used the gluing technique with sugar solutions. Also, Ferdinand Sauerbruch of the Charitè hospital in Berlin was a friend of this method.