@sundance6 I have no experience with this type of treatment, so cannot help you. However, I am including @artscaping and @jenniferhunter here, who I belive may be able to answer your questions.

From healthline, here is a definition of this process: https://www.healthline.com/health/chronic-pain/myofascial-release
Hope this helps somewhat.
Hoping you find what will work for you. Do you feel any relief afterwards?
Ginger