Derrick Rose left the Chicago Bulls' loss to the Milwaukee Bucks late in the fourth quarter with left patellar tendonitis.

It was unclear when Rose suffered the injury.

Rose initially exited the game early in the third quarter and received treatment from the Bulls' trainer.

Rose came back into the game with under six minutes left in the fourth quarter but was moving gingerly.

Rose tore the ACL in his left knee in April 2012. Rose missed three games a few weeks ago due to a sore right knee and hamstring.