Costal cartilage is safe because it is an autologous cartilage. However it is a major operation that leaves a small scar by the rib. Also the fact that warping can occur at 3-5% is a negative aspect of it. The correction of the warping is possible of course. This patient had rhinoplasty using costal cartilage in our clinic 3 weeks ago. Warping has occured so there will be a correction in 3 weeks.