My father is 63 years old, he is facing very

Patient: My father is 63 years old, he is facing very difficulty in walking or even standing since past 1 year. He has consulted many doctors and they say that few of his brain nerves have blocked thats why his legs arent working fine. he cannot walk or stand without support. he is taking medications recommended by doctors but doesnt feel any better infact his condition is worsening. i would like to know what is the propper treatment that he should undergo and if there is any doctor who can handle his case and make him fine soon. any doctor any country just hoping for him to get well soon.please give me suggestion

Doctor: