Thank you for your question. As you can see, the visibility of these contours in your case is more limited and requires some tension in the skin to show it. In some instances, these contours appear more visible. In general, positioning the nasal bones closer to the midline after the bones are reset poses some difficulties. In my experience using manual instruments versus ultrasonic instruments in rhinoplasty makes it more difficult to create a good contour continuity. It is also possible to stitch the nasal bones together after the bridge height has been reduced to create smoother contour. Overall, I have found ultrasonic rhinoplasty to be of benefit for control of the bridge shape. In the end, it is also fair to say that no technique offers 100% guarantee of control of the nasal shape. The displacement that you are discussing, would have happened in the early stages after the surgery, probably whilst the cast was still in place. In the early stages, the swelling of the skin masks their appearance and they become more noticeable as the swelling decreases. There is no secondary sliding of the bones towards the original position after the first 10 days from surgery as the relocated nasal bones are fused in position quite quickly. It is possible to camouflage the contour irregularities with injectable filler. Otherwise, surgical intervention can also produce a smoother contour. If visibility of the irregularities is only when the skin is under tension, there is relatively little value to further intervention.