Orthotics are shoe inserts that can alleviate pressure and stress in the foot and ankle, and thereby relieving pain and promoting proper alignment. Custom-made orthotics are medical devices and require a prescription from a podiatrist. These specialized orthotics can correct abnormal walking patterns, restore balance, improve performance and help chronic pain in the knee. hip, and back. Those that are mass-produced and sold in stores do not have the same type of specificity or personalization.