ONE Injection Paralysis Cure ???

https://www.dailymail.co.uk/sciencetech/article-14531869/paralyzed-man-walks-stem-cell-injection-treatment.html
A single shot of stem cells may hold the cure for people paralyzed
by a spinal cord injury.
Stem cell scientist Hideyuki Okano from Keio University in Japan
has just announced that a fully paralyzed man can now stand and
is learning how to walk again after receiving reprogrammed
stem cells.
The patient was one of four Japanese men to receive the
injection shortly after devastating injuries left each one
paralyzed.
Another man in the first-of-its-kind trial can now move
some of his arm and leg muscles.
Although scientists said larger clinical trials will be
needed, the early results point to a 50-50 chance that
stem cells could restore a paralyzed patient's ability
to move again.
. . .
   Note the afflicted are not running marathons - but
   the approach DOES seem to have much to offer.