Karen Guregian of the Boston Herald was first to report the procedure Friday, and ESPN Boston's Mike Reiss confirmed that the scope did in fact occur two days ago. (photo: Beth Hart, Flickr)
Vollmer, who is slated to hit free agency in mid-March if he isn't re-signed or franchise-tagged by the Patriots, battled "swelling" in the knee throughout the 2012 season but sat out only one game -- a Thursday night matchup with the New York Jets.
The 6-foot-8, 320-pound starter graded out as New England's best pass blocker in 2012 by a pretty respectable margin despite giving up a team-most seven sacks.
Vollmer missed most of training camp last summer with back problems, so despite his productivity, health will be a major factor in how the Patriots decided to handle him moving forward. A franchise tag worth just $9.6 million isn't really plausible.
Other key impending unrestricted free agents the Patriots are set to make big decisions on are receiver Wes Welker and cornerback Aqib Talib.
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