AP

Surgery on Patriots tight end Rob Gronkowski’s back has concluded, a source told PFT’s Mike Florio on Tuesday.

It is believed the surgery, conducted Tuesday, was successful, the source told PFT.

At present, it’s not yet certain when Gronkowski — one of the game’s top all-around performers at his position — will again be ready to play. The Pro Bowl tight end was bothered by a forearm injury /infection late in the 2012 campaign and into this offseason before the back issue became a primary concern.

Gronkowski, 24, caught 55 passes for 790 yards and 11 touchdowns in just 11 regular-season games in 2012. Slightly more than one-in-five of his career regular-season catches have gone for touchdowns (38 TDs, 187 receptions).