Problems with your joints, ligaments, bones, and muscles that cause you pain can often be treated with orthotics. These can be bought over the counter or by getting a prescription from your doctor. The over the counter orthotics you will need is dictated by your shoe size. The type of foot pain you are experiencing will also play a part in your choice. To get a prescription from your doctor, he or she will need to assess your height and weight, as well as how physically active you are. They will also take a thorough look at your medical history.