A British man has become one of the first in the world to have a tiny metal tube implanted in his pelvis to help him beat erectile dysfunction. "Erectile dysfunction is when a man cannot achieve an erection for a suitable amount of time for sexual activity. At the moment erectile dysfunction can be treated with prescription medication such as Viagra, Cialis & Levitra." Doctors at University Hospital of Wales, Cardiff, fitted the middle-aged man with the stent to open an artery failing to carry blood to his penis. The op could help many of the 30% of impotent men for whom Viagra does not work but doctors have warned similar operations in the 80s met with mixed results. Sex expert Dr David Edwards: "It's not for everyone."