Basically, you would be giving yourself a deep tissue massage. When you have adhesions, they can limit movement and cause pain. After you've rolled over the foam roll, you will help break up the adhesions and draw blood to the area. It's helps in continuing to heal a previously area.
I have a professional foam roller, so it is very firm, but I'm also prepared for the initial pain when you resume this kind of self treatment. You can get a commercial grade roller at Target. Google or You Tube "foam roller therapy" so you can see the various exercises.
It could really help you out. I'd suggest it for anyone.