Ankle sprains are among the most common musculoskeletal injuries. Patients typically describe an episode where they "roll their ankle" to one side (often inward, a so called "inversion" sprain (Figure 1) and thereby tear the ligaments on the outside (lateral) ankle. This is contrasted with a less common "eversion" sprain where the foot rolls to the outside and the medial (deltoid) ligament is torn. Patients with sprained ankles can have significant pain and swelling. There is usually a limp, but unlike an ankle fracture, a sprained ankle will usually tolerate some weight-bearing but, in severe cases, not for 7 to...
