I'm forced to say "NOT AGAIN !".

Someone always 'finds' this 'institute' as if it were something new on the scene.

Do a search of this site on 'Dellon' and you will find many,
many posts about this treatment. I think he is either a chiropractor or podiatrist/surgeon.
It is primarily for entrapment of nerves and is a surgery to
release the pressure that is causing the PN. Diabetics are his primary patients.
It will not work for other types of PN.
Dr Dellon trains other docs, all over the country, to do this procedure and gets a split for every one done, under his name. He does not do most of the surgeries.
He developed the procedure while practicing at Johns Hopkins and started his own independent practice he calls his 'institute'.
Results have been iffy- 50/50, according to the volume of posts here and on other sites.