Sounds like the LB from Wisconsin suffered a knee injury...
http://www.waow.com/Global/story.asp?S=11878876
UW's Schofield reportedly suffers serious leg injury during Senior Bowl practice on Monday
Posted: Jan 25, 2010 7:09 PM CST
By Russ Owens
(WAOW)- According to sources on the ground in Mobile, AL, Wisconsin linebacker O'Brien Schofield suffered a serious leg injury during a drill on Monday during practice for this coming Saturday's Under Armour Senior Bowl.
Schofield landed awkwardly on his left leg and had to be helped off the field. Sources close to practice say the injury appeared to be very serious.
Many NFL draft scouts projected Schofield to be a third or fourth round pick in the upcoming NFL Draft.
Courtesy: National Football Post