The knee

Our knee design is a passive mechanical device that swings freely in both flexion and extension when unweighted, but when weighted prevents flexion while simultaneously allowing free extension. This functionality works throughout the gait cycle regardless of joint angles or ground reaction force locations.


The name

XonotivTM (“Zoh-No-Tiv”) is a fictional word derived from the ancient Greek word Xthonostivis (χθονοστιβής), which was used by Sophocles and means “walking the earth.”


The status

We are funded and working on continued development and commercialization.