Italian neurosurgeon Sergio Canavero announced an experiment to reattach the head of a corpse to a body had been achieved as planned.
He said the test showed it was possible to reattach the spine, nerves, blood vessels, veins and skin from the head to the body.
The next step will be to carry out the procedure using a live, but brain dead, human being who has agreed to organ donation, before the first attempt at a living person with a functioning brain is made.
Dr Canavero, is dubbed Dr Frankenstein for his bid to be the first medic to carry out a full head transplant on a living human.