A foot injury refers to any damage or harm that occurs to one's foot, ankle or lower leg. This can include sprains, strains, fractures, cuts, bruises and other injuries caused by accidents, falls, sports activities or overuse. The severity of a foot injury can vary from mild to severe, depending on the extent of damage to the tissues, bones or joints in the affected area. Treatment for foot injuries may involve rest, ice, compression and elevation (RICE) therapy, as well as medications, physical therapy or surgery in more serious cases.