An ankle sprain is one of the most common injuries seen in professional and recreational athletes1, 2. The injury usually involves inversion (turning in) of the ankle with some amount of injury to the lateral (outer) ligaments.  Most of these injuries heal with little to no treatment, and infrequently develop long term instability and pain. Long-lasting problems have been found in up to 20% of patients who get twisting injuries and typically are a result of stiffness (lack of motion)