The possibility of full-fledged walking on a prosthesis depends more on the physical fitness of the patient than on their age. Initially, the patient should master armrest crutches (they are much safer than armpits). And then everything depends only on the patient's desire to work on himself and work hard. Yes, hard work, because the success of prosthetics depends on 50% of the patient and 50% of the prosthetist. Our task, as prosthetists, is to make a high-quality prosthesis, choose the optimal configuration, teach how to use a prosthesis, and the patient's task is to follow our recommendations and train.