Chronic ankle instability (CAI) is a condition that develops due to frequent sprains (for example, when twisting your foot). Over time, the ankle begins to lose its functionality, and its stability is significantly reduced, which leads to new sprains, subluxations and dislocations. People with CAI have a particularly hard time with physical activity - for example, intensive walking, climbing a hill, walking on an uneven surface.
The main symptoms of chronic ankle instability:- pain in the ankle - it can be acute or chronic (aching), intensifies after walking or standing for a long time;
- a feeling of an unstable "wobbly" joint;
- repeated sprains or dislocations of the ankle;
- crunching or clicking in the joint;
- unsteadiness when walking, loss of balance;
- fatigue of the legs.
In case of acute injury (ligament sprain, subluxation or dislocation) the ankle joint swells, turns red and starts to hurt. Over time, the range of motion in it may be limited, difficulties arise, for example, with extension-flexion of the foot.