Feet are a complicated area of the body since there are a lot of small bones that are joined together by a lot of ligaments and moved by a lot of muscles. In addition to that we take weight on the feet and subject it to so many stresses and strains. To make it even worse we place the feet inside the artificial environment of a shoe. It's for this reason that the career of podiatric medicine exists because there is just so much that will go wrong with the foot and related structures. Podiatrists utilize a lots of different interventions to relieve problems of the foot and lower limb.
Foot supports can be used to treat the wide range of problems that can go wrong with the foot. The aim of foot orthotics are to change the posture of the foot towards a more corrected normal alignment or to lower the stress in structures of the foot which might be painful so that they can improve. The foot supports do that via having various design characteristics which are designed to match the foot. A custom made foot orthoses will do that. However, non-prescription orthotics can do this, usually by chance. They might or may not match the feet of the person using them as opposed to a custom orthotic will. There are many different designs which can be varied, for example the elevation of the arch and also the level of cushioning. There are even designs referred to as the Kinetic wedge and Cluffy wedge .
Sometimes the less expensive over-the-counter type insoles are better and other times the custom made ones are more effective. It will all depend on the nature of the condition, the foot type and structure as well as the guidance of a good podiatrist in regards to what is the best solution. When you have a problem with the feet and think you need some foot orthoses, then see a good foot doctor.