In a new study, researchers treated four men with spinal cord injuries with a combination of mild electrical stimulation to the spine and intense physical therapy. The men regained the ability to move their legs, knees, ankles and toes after being paralyzed for two years or more.
The study follows a 2011 announcement that the same regimen worked for one man, Rob Summers. Over time, Summers was able to stand for a few minutes without help. He could also take steps on a treadmill, with help bearing some of his body weight and keeping him balanced.