Dr. Maffetone has writen an exellent article about running shoes. You can read the whole story from http://www.philmaffetone.com (requires a free registration for a membership, worth it). Check article "Athletic Shoes and Supports: Facts & Myths" "During my 30 professional years, I may have prescribed less than a dozen pair of orthotics. However, I probably removed and discarded hundreds of pairs of orthotics from athlete’s, and other, shoes during that same time. One potential problem with orthotics is that the need for other therapies is often overlooked and not obtained. Consider orthotics almost like surgery — it’s one of the last resorts after other more conservative therapies have not found or corrected the problem. (Muscle biofeedback may be the best therapy for these types of foot‐muscle problems.)" Most probably you feet muscles are weak and out of balance with other leg muscles. This cause serious stress to different muscle groups. Orthotics can worsen the case. Please, read the article and even contact our Doctor. He is really good in replying. Good luck!