A sprained ankle, which can also be called an ankle sprain, twisted ankle, or ankle ligament injury, is a common injury where one or more of the ligaments of the ankle is torn or partially torn. Knowing the symptoms that can be experienced with a sprain is important in figuring out that the injury is not a fracture of the bone. When a sprain happens, blood vessels will leak fluid into the tissue that surrounding nearby joints. White blood cells responsible for inflammation migrate to the area. Along with this inflammation, swelling from the fluid and throbbing pain are common symptoms. This pain will increase if any pressure placed on the injury.
Movements – especially twisting, turning, and rolling of the foot – are the primary cause of an ankle sprain. Sport that involve explosive side to side movement place people at the highest risk for this condition. Examples include tennis and basketball. Weakness in muscle and tendons surrounding the ankle, or wearing shoes with insufficient support can increase the risk further.