The main problem currently existing prostheses it is the inflexibility and lack of communication with the rest body. Prostheses that replace the active parts of the body are the only substitute. They are not better than the lost legs or arms and they are not even the same functionality, so they are much worse. This situation has been unchanged for centuries until it has appeared biomechatronics. Until the late twentieth century, the prosthesis was attached to the human body only mechanically. More recently, began to develop the new trend in orthopedics, which is quite called biomechatronics. It is merger robotics with the human nervous system. It should be noted that the already developed artificial limbs that move just like the real leg or arm. Very soon the wealthy people can afford high-tech prosthetic legs, which can replace the most amputated limb. The main advantage of them is that they are managed directly by the brain. This is a huge breakthrough, which can improve the quality of life of many people with