Partial Foot Amputation If A Person Has A Partial Foot, Meaning They Have Their Ankle And Heel, But Not The Mid Foot And Toes..?

If a person has a partial foot, meaning they have their ankle and heel, but not the mid foot and toes..? - partial foot amputation

Who knows what is called the disease? I'm not talking about the amputation, but since she was born with the heel of the foot, but not before .. and what is the name of the type of prosthesis is used by the person? Is there some kind of prosthesis, the shoes to a person who not only tennis shoes, or some sort of prosthesis, a kind of elasticity in the fingers in order to contribute to the development of the calf muscle to be allowed or walking / jogging Easier?