The channel you were counting on is gone
In September 2019 Google announced a policy prohibiting advertising for unproven or experimental medical techniques, naming most stem cell therapy, cellular non-stem therapy, and gene therapy. It took effect that October. Meta enforces a comparable restriction. There is no clever workaround, and the agencies selling one are getting accounts permanently disabled.
What replaces it is slower and more durable. Organic search for the specific joint, condition, and procedure. A Google Business Profile that ranks. Reviews from patients who were treated. A referral relationship with the orthopedic and pain practices in your market. None of that turns on in a week.