[Ski boot rim fracture: tension-optical study]

Most of the models of ski-boots used today end up at the weakest area of the tibia. They should be disregarded for medical and statistical reasons because the maximal bending point lies at the minimal diameter of the tibia. A ski-boot with a joint, splinting more than the distal third of the calf and ending approximately at the mid-point of the tibia elasticity, offers an important safety to the skier. Together with a safety binding the risk of an accident of the so-called "fracture of the border of the ski-boot" can be further reduced.