Scientists report in the Lancet a case of a 23 year old man paralyzed from the chest down who was able to learn to stand and walk with the aid of a spinal stimulator. This is an interesting advance, but news reports are careful to point out (correctly) that it is not a cure.
Rob Summers suffered an car accident in 2006 that damaged his spinal cord at the T1 level – just below the neck. This would mostly (although not completely) spare his arms, but render him weak in the legs. According to the case report he had no detectable leg movement and lost bladder control but had partial sensation in the legs. This is an important detail to put this case into perspective – Summers’ injury was partial, if severe. This means there were some neurons that were spared.
NeuroLogica Blog » Paraplegic Man Walks with Spinal Stimulation