@toula Myofascial release does break up surgical scar tissue. It may take a bit more work and more sessions, but it helps. I have had neck spine surgery which makes a tight scar and I and my PT periodically stretch this to release the fascia. I think it may be worth trying. You might want to look for an expert level therapist and discuss this with them. This summer, I spent 3 months not being able to walk because of a broken ankle and spent too much time sitting which caused some issues with overly tight hip flexors and my guts getting adhered to my body wall. My PT was able to treat that and resolve it. It is amazing how everything is so interconnected, and when you stop moving and maintaining good posture, it causes problems. A therapist will be able to feel where the issues are.