Would stem cell therapy work for complicated spinal stenosis? My 65yo brother lives in FLA. Over the past 10 yrs or so has had many surgeries (about 4), had metal inserted, contracted Mercer, had to have metal removed. Told it cannot be re-inserted bc of the Mercer (which was treated and is gone). Now suffers from much pain, apprehensive but taking addictive medication and can't walk w/o assistance. Seems he has gone through all the surgeries, pain, rehab, etc. over and over gain for nothing – as is back to step one. Wondering if stem cell would help?