Ankles and feet are responsible for weight bearing and ambulation (aka walking).
Proper function and mechanics of ankles and feet are essential for most sports activities and performance of activities of daily living.
Slight abnormalities in the feet and ankles (e.g. muscular imbalance, proprioceptive dysfunction, and structural changes) are transmitted via the kinetic chain to most joints superior to them in the body.
Thus, knee, hip, low back, neck, shoulder, and body alignment and postural problems can at times be traced to dysfunctional ankles and feet.