I've had a lot of massage, dr's appts, chiropractic care, etc. for this one. But nothing helped me like the sacro wedgy. A massage therapist sent me to a massage store on congress for mine 15 years ago, but I've now notice you can get one for double what I paid off Amazon! There's a male and female version and when you see it, it's hard to believe that it works, but it really does. The key is to find the right chair & placement for it when you are at rest!