Vikings guard Josh Samuda will undergo surgery Tuesday after suffering a broken right fibula during a voluntary offseason workout on Tuesday, according to an NFL source.
Doctors will find out the full extent of the injury during surgery, but Samuda also could have ligament damage.
Samuda, 25, dislocated his right ankle during a noncontact conditioning drill open to the media in which one player chased another around a tight circle. Samuda twisted the ankle, collapsed on the turf and clutched his leg. Teammates helped him off the field and into the trainer's room.
Later Tuesday, Samuda posted on Twitter: "Thank you everyone for the love and support ! Don't know when, but I can't wait to get back to work, and play the best sport ever created !''
Samuda signed a reserve/future contract with the Vikings in January. He played 16 games for the Miami Dolphins in 2012 after signing as a rookie free agent out of Massachusetts. He did not play in 2013 after the Dolphins waived him before the start of the season.
Team adds two
The Vikings made two additions to their roster on Tuesday by signing tight end Allen Reisner and claiming linebacker Terrell Manning off waivers.
Reisner, who worked out with the team Tuesday morning, returns to the Vikings after starting his career in purple. He signed with the Vikings as an undrafted free agent out of Iowa in 2011. Reisner, 25, spent the final week of the 2012 season and all of last season with the Jaguars after he was signed off the Vikings practice squad.
The Vikings have four tight ends on their roster and their first addition since releasing John Carlson in the offseason. Outside of Kyle Rudolph, the other three tight ends, Reisner, Chase Ford and Rhett Ellison, have 30 career catches for 317 yards. Reisner has seven catches for 58 yards in 15 career games.