This surgery made the history books with being the first double arm transplant and great progress is being made sooner than expected. He can once again ride a bicycle too. Watch the video below to see his progress, amazing. BD
A German dairy farmer who received the world's first transplant of two complete arms has spoken about his new limbs - and the joy of scratching.
Karl Merk had the 15-hour operation a year ago in Munich after losing his arms just below the shoulder in a 2002 combine harvester accident. The 55-year-old's new limbs came from an anonymous donor who had died.