Two thirds of the population have unfavourably formed, or even badly formed feet. Splayed feet or flat feet are particularly common. This applies to the entire cross-
section of the population, i.e. both the very young and the elderly, sportsmen and people who mainly stand during their work.

Practice has shown that in a large number of cases, foot complaints are not taken into consideration and unfavourable forms of the foot are «overcorrected». This often has long-term consequences, e.g. tiredness and incorrect weight-bearing on the feet give rise to complaints in the entire apparatus of locomotion from the feet to the spinal column.