@ellensm60 & @mnurse - Prolotherapy has been found to provide relief for some with arthritis - this is different from "prolozone injections" in non-clinical settings.
You can take a look here if you would like the scientific perspective:
https://pmc.ncbi.nlm.nih.gov/articles/PMC9235417/
The bad news is that there is not yet a large enough body of proof to convince Medicare and insurance companies to cover this as a routine procedure, so the patient must pay. It typically takes years of evidence, and a number of research studies to "move the needle" and add covered treatments - but this is a good thing. It has not been around long enough to show that it is safe long-term, and that the relief lasts.