Ten Tips to Help Prevent Running Injuries. (#2)
Have a formal gait analysis performed, and use orthotics if recommended.
Poor foot bio-mechanics such as heel strike, excessive pronation, or a very rigid or very flexible foot arch can lead to inefficiency and injuries.
Most runners can control these problems by carefully selecting the right shoe type or by seeing an expert that can analyze your running gait and make orthotic inserts specific to your foot structure.