Boston Red Sox infielder Julio Lugo waits to take batting practice during a workout before a MLB spring training exhibition game with the New York Yankees in Fort Myers, Florida March 13, 2009.  REUTERS/Steve Nesius  As was thought yesterday, the news for Boston Red Sox shortstop Julio Lugo isn’t good.

It was announced today that Lugo will undergo arthroscopic surgery on his right knee on Tuesday back in Boston. There is no timetable for his return but if it’s just a torn meniscus, he could be back within a month.

“The extent of what’s going on it there, it’s a little hard to determine the severity, or lack of severity,” Francona said this morning. “That’s why we have Tom. Tom treats the symptoms, not just the MRI [which Lugo received Friday night]. And they’re pretty conclusive that something is going on.”

“There’s no way any of us can know,” Francona said. “I don’t think this is going to be a terribly long procedure, how long he misses. But we just don’t know. That’s why we try to be a little careful.”

If Lugo does miss extended time, it could create an opening for either Nick Green, Ivan Ochoa or Gil Velazquez as the utility infielder.

Arthroscopic surgery for Lugo [Extra Bases]