It turns out the new boot reduces force on the knee by 30% to 60%, even more than Lange had claimed.

FORBES: Revenge of the Nerds

With a deafening mechanical whine, the Instron's piston bore down on the metal leg inside the boot, mimicking the effect of a skier falling backward, the move that has ruptured thousands of knee ligaments.

FORBES: Magazine Article

With a deafening mechanical whine, the Instron's piston bore down on the metal leg inside the boot, mimicking the effect of a skier falling backward, a move that has ruptured thousands of knee ligaments.

FORBES: Magazine Article