We've been through a couple of shoulder surgeries with our sons, one with Dr. Conway in Ft. Worth and the other by a leading specialist at Stanford. While I'm far from an expert, I have learned a few things.
1. It's hard to see everything that's going on in the shoulder in an MRI. Sometimes you need exploratory arthroscopic surgery, but that's usually a last resort when pain still persists after treatment.
2. If money and distance are not a concern, see a specialist that has a strong track record of treating pro baseball players. Retaining the range of motion required to throw a baseball requires specialized skills and experience.
3. Use a good PT with pro player experience and a record for success.
4. Don't loose hope. Our oldest had a torn labrum repaired and actually throws harder now than before.