Using cells transplanted from the patients nose were implanted in his spinal cord...
"Darek Fidyka, who was paralyzed from the chest down in a knife attack in 2010, can now walk using a frame.
The treatment, a world first, was carried out by surgeons in Poland in collaboration with scientists in London.
Details of the research are published in the journal Cell Transplantation."
"Dr Pawel Tabakow, consultant neurosurgeon at Wroclaw University Hospital, who led the Polish research team, said: "It's amazing to see how regeneration of the spinal cord, something that was thought impossible for many years, is becoming a reality."
The treatment used olfactory ensheathing cells (OECs) - specialist cells that form part of the sense of smell.
OECs act as pathway cells that enable nerve fibres in the olfactory system to be continually renewed."
"The complex neural circuitry responsible for our sense of smell is the only part of the nervous system that regenerates throughout adult life."

http://www.bbc.com/news/health-29645760