This is the most common type of ankle sprain and is characterized by moderate pain in addition to swelling, bruising, and some difficulty with movement. Third degree sprains occur when the ligament has torn completely. This is the most severe type of sprain, and typically involves immense pain, swelling, loss of motion, and joint instability.
Bruising and swelling are common signs of a sprained ankle. If there is severe tearing of the ligaments, you might also hear or feel a “pop” when the sprain occurs.
Most sprained ankles occur in the lateral ligaments on the outside of the ankle. Sprains can range from tiny tears in the fibers that make up the ligament to complete tears through the tissue.