Is Myelomalacia With High BP And Diabetes Life Threatening?

my father is suffering from cervical and lumber spondalities.the docter say that he has myelomalacia.they said that surgery is the only option.but he has highBP,diabetics.he has numbness in his hands and legs.he has difficulty in walking properly.i want to know that is there a threat to his life . what are your view for his condition.