There are many different size bones, that make a body.
Some bone categories are: long bones, short bones, sesamoid bones, flat bones, and irregular bones. Some bone types appear more frequently in a body, than others. Even your spinal cord is made of different size and shaped bones. :)
long answer: if you are comparing the same bones from person to person than no, every person grows differently and thus their bones are different. if you are comparing bones in the same body than no, the femur is not the same size as your flanges.