Welcome @ron99, I haven't heard of any risks associated with Myofacial Release Therapy but I did find a list of very rare risks associated with MFR for certain people.

-- What Is Myofascial Release and Does It Work?: https://www.healthline.com/health/chronic-pain/myofascial-release

There is a discussion that you may want to read through and meet other members who have used MFR -- Myofascial Release Therapy (MFR) for treating compression and pain: https://connect.mayoclinic.org/discussion/myofascial-release-therapy-mfr-for-treating-compression-and-pain/.

Have you looked into Myofascial Release Therapy?