He is the director of the Department of Vascular Surgery at the DERMATOLOGIKUM Hamburg. He has performed over 4000 endovenous procedures with the VNUS Closure system and more than 3000 procedures with the Closure FAST system. At present he performed more VNUS Closure FAST catheter procedures than anywhere else in the whole of Europe. The Vascular Surgery Department at DERMATOLOGIKUM is the European training centre for practitioners of the VNUS Closure FAST catheter system. Dr. Alm is involved in the Multicentre Closure FAST study and the new RFS catheter study.