UPDATE – Steelers Troy Polamalu left knee injury is not serious. Troy Polamalu knee injury is not the same location as previously injured despite initial fears.

In 2007, Troy Polamalu missed five games with a knee injury. Then at the start of 2009’s season Troy was out four games with a collateral ligament strain.

Now Steelers reps haven’t ruled Troy Polamalu completely out for Sunday at Kansas City. Coach Mike Tomlin says Troy Polamalu remains questionable.