Stafford has dislocated knee cap

Posted by ESPN.com's Kevin Seifert

We're starting to get some details on quarterback Matthew Stafford's right knee injury. ESPN's Chris Mortensen reported on SportsCenter that Stafford suffered a dislocated knee cap in Sunday's 48-24 loss at Chicago.

The injury is not considered serious and isn't likely to cost Stafford more than one or two games, according to Mortensen. The knee cap popped back in while Stafford was on the sidelines.

If necessary, Daunte Culpepper would start in place of Stafford next week against Pittsburgh.