The Blades were victorious at the Pirelli Stadium, winning 3-1 and thus returning (if only briefly) to the top of the Championship. But at 2-1 up, with half-time looming a challenge involving Marvin Sordell and the 29 year old midfielder resulting in the former Derby County man being carried off.
It has since emerged that he has fractured his tibia and will require surgery.
Chris Wilder said after the game; "We are a fair team and a committed team and unfortunately through the course of games, seasons and careers you pick up these injuries. We have picked up a nasty one. We are a bit subdued. It's a difficult situation because we were outstanding and deservedly won the game."