For litmus, it so happens that the 50 / 50 colour does occur at close to pH 7 - that's why litmus is commonly used to test for acids and alkalis. As you will see below, that isn't true for other indicators. Methyl orange. Methyl orange is one of the indicators commonly used in titrations. In an alkaline solution, methyl orange is yellow and the structure is: Now, you might think that when you add an acid, the hydrogen ion would be picked up by the negatively charged oxygen. That's the obvious place for it to go.
Ankle sprain: Types list. The list of types of Ankle sprain mentioned in various sources includes: 1  Anterior talofibular ligament sprain - most common. 2  Calcaneofibular ligament sprain - second most common.  Inversion injury - from the foot turning inward.
Types of Ankle Sprains. An inversion injury is the most common cause of an ankle sprain and occurs when the ankle rolls outward and the foot turns inward. It results in stretching and tearing of the ligaments on the outside of the ankle. Less commonly, the ankle rolls inward and the foot outward in an eversion injury, damaging the ligaments at the inside of the ankle. The high ankle sprain is the least common. It can happen when the foot is forced to rotate toward the outside (away from the other foot), or when the foot is planted so it can't move and the leg is rotated toward the inside.