[Corrections of and within the athletic shoe].

The footprint is unique to every human. Because of this, the ideal shoe should be constructed in such a way as to afford the foot enough space. Many sportsmen become problems in the lower extremities that can lead to stress fractures because the industrially made sportshoe is made for the average person. In order to reduce or even avoid these problems, corrections can be made on the shoe parts such as on the sole, the heel, the pad or the high-tops. According to the measurements we have made of the foot with the hydraulic principle according to Ernst and the use of a special innersole (F-Scan, produced bei Tenscan Inc.). These have shown that at lower speeds (9 km/h) the shock absorption from the foot is such as to relieve the tension of the orthostatic system. Where as at higher speeds (14 km/h) the absorbtion produces more tension leading to an overload on the foot. This can be measured through the innersole tension and form, so that even through manipulation compensation cannot be achieved.