Confirming the news to the Ipswich Evening Star, Town boss Jim Magilton said: "It is frustrating for him and us. At least they have found out what the problem is and they can sort that out.
"He needs an operation to remove a piece of cartilage in a big toe and he will be missing for up to 12 weeks.
"Richard is an experienced player and a valuable member of our squad, so we will miss him."