This is not feasible. Because the polished and sawed bones are not as complete as you think, they are all fragments, even if they are big enough to make a bridge of the nose. If you want to use your own tissue as the bridge of the nose, you can choose costal cartilage and make a small incision on your body. Or the expanded material rhinoplasty beam, which is also cartilage, has a very natural appearance and is the first choice for rhinoplasty.