Urlacher paid for the procedure out of his own pocket, one source told the Tribune. The eight-time Pro Bowl selection met with "that famous doctor everybody goes to," another source told the newspaper.
The Bears refused to confirm, deny or steer "in one direction or another" when asked by the Tribune if Urlacher had visited Dr. Peter Wehling, the German-based physician who has performed a knee procedure known as Orthokine/Regenokine on the likes of Los Angeles Lakers guard Kobe Bryant and New York Yankees third baseman Alex Rodriguez.
The treatment, which Wehling claims on his website "relieves pain and improves joint function," has not been approved by the Food and Drug Administration.
Urlacher declined to comment on the matter when asked about it by the Tribune.
Bears coach Love Smith confirmed that Urlacher had a "minor scope" on the knee last Tuesday. NFL Network and NFL.com reporter Albert Breer reported last Thursday, citing a source with knowledge of the situation, that Urlacher first underwent arthroscopic surgery on his left knee in January at the end of the regular season.