Surgery went very well. Recovery was slow for first month - pretty depressing for son not to be able to do anything - no driving - right arm in sling for one month before real rehab began (this was done in July when he was accustomed to busy baseball schedule).
Major rehab began when he got back to school - but rehab done three times a week at physical therapy center off campus - interestingly, college offerings in this area not as good.
He tried to play in March, but still had some pain so basically took off the season. Was ready to play by May for summer ball. Arm felt much stronger, and throw to second was much stronger than before.
For my son, rehab was slow and he may have come back too soon. Doctors had told him rehab would take a good year, and he rushed his return (with a little encouragement from others around him).
Every rehab is on a different schedule, though and I've heard of players having a much faster rehab.