Foot orthoses are frequently used to treat a variety of foot disorders from overpronation and fallen arches to plantar fasciitis and other reasons for heel pain. The scientific evidence points too they are generally very good at fixing many of the disorders as long as they are indicated for that problem, Foot orthoses frequently get used to support the foot, when support of the foot may have nothing to do with the problem that the individual could have. This can lead to them being misused and mistakenly blamed for treatment failures.
The other issue is that there are many different types of foot orthoses and also within every type of foot orthotic, there is an almost infinite variation in the design features that could be included in them. If even one of those design features isn't good for the person, then the prospects of that foot orthotic helping is potentially reduced. That is why selecting the various designs is really based upon the expertise and experience of the clinician. The medical professional will determine the design features required for the individual and if the device needs to be custom made for the individual or if a premade more affordable foot orthotic can be used. With regards to custom made orthotics, the clinician needs to take a plaster cast or optical scan of the foot kept in specific positions for the foot orthotic to be made on. When it comes to the design of the device various elements are looked at. For example, if the patient has adult acquired flat foot, then something like a Cluffy Wedge type foot orthotic should be used. The MOSI has special modifications to handle the range of issues that occur in that disorder. If the concern is associated with deficiencies in shock absorption, then the orthotic really should be made to support that. The range of options is endless and is determined by the condition present and the wishes of the treating podiatrist.