Doctors have been so concerned about managing the infection in Tom Brady's surgically-repaired left knee that they have gone back in three times in an attempt to eradicate it. Brady has acknowledged that he had one arthroscopic procedure done to "clean and to test the wound" last Wednesday, but the Boston Herald has learned there have been two additional procedures performed since then. According to a team source, the fear is the patellar tendon graft used to replace Brady?s ACL is in danger of becoming compromised. Should that occur, the entire ACL reconstruction would have to be removed and redone from scratch.