Rob Gronkowski (forearm) to have surgery tomorrow
During the surgery, it is expected that doctors will take cultures from his forearm to verify whether or not Gronkowski is free from infection and the results should be known in roughly one week.
Provided he is clear is from infection, then the doctors will be able to go back in and switch the plate in his forearm and he will begin the 10-11 week recovery period. If he is not free from infection, then it's "back to square one" as Guregian writes and the probability that he misses regular-season games increases significantly.
In addition to surgery on his forearm, Gronkowski may also need surgery on his back as well, but that is not expected to sideline him longer than the arm injury.
Gronkowski, my top-ranked fantasy tight end for 2013, has scored a total of 39 touchdowns in 43 career games.