An ankle sprain is a condition where the ankle is moved outside of its appropriate range of motion. When stressed beyond this point the ligaments that help support the ankle can tear from the strain. Sprained ankles can range from minor to more severe injuries and without the appropriate care sprains can reoccur, leading to long-term damage.
If the sprain is mild, your doctor may not order X-rays. But with more severe sprains, you may need X-rays to rule out a broken bone in the ankle or the foot. It is possible to break a bone in your foot or ankle at the same time as a sprain.