Strong ligaments hold the bones of your joints in place while the joints are in motion and at rest. Muscles and tendons hold the bones of the joints in place most often when moving. Instability happens when these structures weaken.
Chronic ankle instability often develops after repeated ankle sprains.
This is a condition in which the foot has a very high arch.
Peroneal Tendon Injuries
A tendon is a band of tissue that connects a muscle to a bone. The two peroneal tendons in the foot run side by side behind the outer ankle bone.