Richardson's representatives sent a memo to all 32 teams informing them of the procedure, ESPN NFL Insider Adam Schefter reported Wednesday.
A person familiar with the procedure told Schefter the surgery was "no big deal at all."
According to the memo, Richardson is expected to be able to participate in on-field activity by the end of March. Alabama's pro day is slated for March 7.
The NFL Network reported earlier Wednesday that Richardson was injured in a practice leading up to the Allstate BCS National Championship Game and had the surgery roughly three weeks ago to ease discomfort.
The 5-foot-11, 224-pound running back has made good progress since the procedure, the report said, but will skip the drills as a precaution.
Richardson set school single-season rushing records with 1,679 yards and 21 touchdowns in his lone season as a full-time starter in 2011 after running behind 2009 Heisman winner Mark Ingram.
Richardson was a Heisman Trophy finalist and the Doak Walker Award winner as the nation's top running back. He is the No. 1-ranked running back prospect in April's draft by both ESPN's Scouts Inc. and ESPN NFL draft analyst Mel Kiper Jr., and is a projected top-10 pick.
I would personally love if Richardson fell to us. If Sparano wants to go ground-&-pound then we need a stable of running backs, and Richardson is a game-changing talent. I know we have other positions that we need to address, but some of those can be shored up by: resigning Braylon/grabbing a later round WR (think Fuller or Quick a little earlier), grabbing a RT in the 2nd, and making room for Michael Griffin. Then we're only lacking a pass rusher, but there are no elite rushers in this class, or free agency anyway aside from Super Mario, and we all know that's a pipe dream.