Some of the most common injuries seen in urgent care clinics and emergency rooms are sprained ankles. Sprained ankles can cause severe pain, and sometimes can trick patients into thinking they may have a more severe injury like a fractured bone. Sprained ankles occur when the ligaments that support the ankle joint and hold it in place are strained, leading to swelling and joint instability. Sprained ankles often heal on their own, however, understanding the ...