Answer:
Physically handicapped are those who have either got the disability through any of the two means either hereditery or through the environment eg. through some accident, on the other hand ,orthopedically handicapped are those who have some handicap related to their muscles or bones like your bones are too weak to enable you to lead a normal life or like it happens in polio or paralysis when your muscles stop moving its a precise term ,whereas, physical handicap is a wider term that we use for physical disabilities. i have tried my best to help you friend.