Oops - I had put this in the wrong forum, think it's better here. Enjoy!
http://news.bbc.co.uk/2/hi/health/7582240.stmThis article is entitled Robo skeleton lets paralysed walk. Hopefully the link about will lead you to it directly. It appears to be quite impressive. It says one needs good hand and shoulder control in order to operate successfully. Though quite what good means is another thing.
In any case, if my partner gets the opportunity we'll be trying this out too. I imagine it would be good for blood circulation, blood pressure and also diminishing chances of bedsores etc.
I hope you find it useful.