Rhinoplasty changes the shape of the nose. The change can be made by adding or removing bone or cartilage or grafting tissue from another part of the body. Internal rhinoplasty involves making all incisions inside the nasal cavity. The external, or "open," technique involves a skin incision across the base of the nasal columella and incisions inside the nose. An external incision allows the surgeon to expose the bone and cartilage more fully and is most often used for complex procedures.