The Vario crank shortener allows you to adjust the pedals of your Exercise bike or Ergometer.

By adjusting both pedals the crank becomes shorter and you can make a complete pedal rotation with only 70 degrees range of motion.

The Vario crank shortener can be permanently installed on the Exercise bike/Ergometer and can be adjusted as recouperation advances.

The video shows clearly how it works.

Form the original pedal position, you can adjust the maximal flexion of your patient. The saddle height should be adjusted at the same time. The maximum adjustment of the pedal is 9 cm, which allows for a full rotation with just 70 degrees of knee bending (or flexion).  The crank plate has a cm indicator, 0-9 cm.