The injury to Redskins quarterback Robert Griffin III was a mild, or Grade 1, sprain of the lateral collateral ligament in his right knee. The LCL is a fibrous band of tissue that connects the thigh bone (femur) to the fibula. Coach Mike Shanahan said Griffin may be able to play on Sunday. (Read related article)
Sources: National Institutes of Health, Cedars-Sinai. Bonnie Berkowitz and Alberto Cuadra - The Washington Post.