Patriots tight end Rob Gronkowski was supposed to make his 2013 debut in Week 3. But after offseason surgery on his arm and back he still remains sidelined as New England's offense sputters. According to WEEI's Mike Petraglia Gronkowski's arm injury which he initially suffered in November 2012 might have healed properly without surgery. "But the team and Gronkowski perhaps looking to hasten his return to the field decided upon surgery to use an implement in hopes he would be ready for the playoffs" Petraglia wrote. Earlier this week there was a report that Gronk had finally been cleared to play but Thursday night a source told that "serious concerns" remain about the integrity of the bone in the tight end's arm where the implement was placed as well as the surrounding nerves.