The name of our microprocessor knee prosthesis, ADLIB, comes from Latin word “Ad Libitum”, which means “at one’s pleasure”, and also become our principal design concepts. Through this concept, we already bring more intelligent and secure feeling for the amputee, and make the user lead a leisurely and careless life. Bringing a techno-style into design idea, the look and the functions were evolved together. At the appearance, a blue light across the dark sky on the product, symbolizing and subliming a new freedom of lifestyle. The ADLIB Microprocessor Knee Prosthesis is controlled by microprocessor and electric sensors. The main function of the product, joint resistance, can be adjusted automatically during walking; in addition, manual set for the joint resistance is also available. Finally, this product provides confidence and satisfying for users exploring their new life.