Key points from article :
A treatment has restored the movement of patients with chronic Parkinson's disease.
1 in 4 patients have difficulty walking, often freezing on the spot and falling.
Normal walking involves the brain sending and receiving instructions to/from the legs.
Parkinson's disease reduces the returning signals causing the patient to freeze.
Western University in London, Ontario, has developed an implant that boosts the signal.
Treatment was long-lasting and worked even when the implant was turned off.
