German farmer Karl Merk, 54, looks at his transplanted arms in a Munich hospital, October 10, 2008. Merk who received the world's first complete double arm transplant is able to perform some basic tasks, but it still could take up to two years until he re-learns how to use his hands properly. Doctors spent 15 hours on July 25-26 grafting the donor arms onto the body of Merk, who lost his own just below the shoulder in a farm accident involving a combine six years ago. REUTERS/Alexandra Beier (GERMANY)