Definition
Pronation is a biomechanical function of the foot. Below, the left foot shows excessive pronation and the right foot is in the neutral positon. The right foot has been aligned properly with an orthotic. Excessive pronation similar to the foot on the left is a leading cause for heel pain.
The Pronated Foot


Causes
Over-pronation occurs when you are walking or running; your foot hits the ground, and the arch and the bones of your feet flatten out and roll inward. This can occur because of looseness in the ligaments or tendons that attach to your foot bones. You can be born with this type of problem, or it can result from injuries or overuse.

Treatment
Over-pronation and the problems that go along with it are best treated with arch supports called orthotics. Custom orthotics are usually made by taking a mold of your foot and can cost as much as $450 a pair. Most people should not start out with with custom orthotics. The logical alternative is to try a high quality over-the-counter orthotic first. (See the Ultimate here)

