Thank you for this question. The surgeon you have seen is correct: rib grafts can warp. That being said, a number of factors play into the warping to include your age, the quality of your cartilage, certain technical factors of your surgery, etc. I would recommend that you see a Board certified plastic surgeon to review these factors as they apply to you.
Thank you for your question. In rhinoplasty, we use cartilage from either the septum, ear, and/or rib. All of them work well when used correctly and, as you can imagine, each is a little different. I would recommend a consultation with a board certified plastic surgeon to determine what is the best option for you.