The SYMBIONIC LEG is an integrated prosthetic leg for transfemoral and knee disarticulation amputees. || Product Usage: SYMBIONIC LEG is intended for continuous use by amputees of low to moderate impact levels that weigh less than 125 kg for foot categories 25 30 and less than 100kg for foot categories 22, 23 and 24. The system is not intended for athletic use.