Some day devices will be readily available to help wheel chair bound people walk again. Watch the video at the link to see a paralyzed man walk with the help of an exoskeleton.
A 22-year-old paraplegic college graduate, paralyzed since a 2007 car crash, used an exoskeleton to walk across the stage Saturday to receive his diploma.
http://www.popsci.com/technology/article/2011-05/video-robotic-exoskeleton-helps-paralyzed-college-student-walk-across-stage-graduation