From what I read, stem cell therapy does not help neuro issues but is very beneficial with joint injuries, ligaments, tendons. The jury is still out on HBOT. Even Dr Harch's study is inconclusive. It appears to help some and not others.

My interest is in the strengthening of the C-1 to occiput and C-1 to C-2 ligaments. They can take months to strengthen by normal healing. Did the stem cell therapy target those ligaments?