Just watched some vids on this , looks pretty cool, actually may look into it.
I had some extensive prolotherapy sessions with injections right into the tendons that share a lot with what the principles behind this procedure . The major difference I see is that this actually removes the damaged area. The prolo was more about the positive inflammation cascade and blood flow. Rotator cuff was pain free for over a year whilst I beat the shit out of it with heavy weights, fights and gasoline fueled recreation. Hard to say how long I could have stayed pain free if I had been a responsible kind of guy. Seems like this would even be better.
The prolo was on a shoulder with a 20 year history of abuse and surgeries, 20 years more have gone by and it feels less than great( ) now