Now if we examine our legs, the legs also contain long bones. So we have the femur, which is the bone that is much stronger than concrete. We also have the tibia and our fibula and these are also examples of long bones. Now, if we examine our fingers, the fingers specifically the metacarpals are also examples of long bones. But these are much smaller than these long bones. So basically long bones can actually be very long or they can be very small.