Extended L-Framework: An Innovative Technique for Reconstruction of Low Nasal Dorsum by Autogenous Costal Cartilage Graft.

Abstract

Background Congenital, iatrogenic, and traumatic etiologies can produce a deficient nasal dorsum requiring dorsal augmentation. Traditional techniques for dorsal augmentation as onlay dorsal graft, cantilever graft, or conventional L-framework usually have less stability and produce a rigid lobule if the single unit framework extends to the tip. Because of abundant volume and relative ease of harvest and carving, the autogenous rib cartilage has been considered the graft of choice for dorsal nasal augmentation when structural support is necessary and sufficient septal cartilage is not available. Methods Eighteen patients with congenital, iatrogenic, and posttraumatic low nasal dorsum were reconstructed with the extended L-cartilage framework over the past 3 years with an average postoperative follow-up of 15 months. The framework was reconstructed from 3 carved cartilaginous pieces. If needed, columellar strut, spreader, and tip grafts were also provided. Results All the 18 patients were generally satisfied with the cosmetic and functional outcomes at around 1-year follow-up. The nasal projection and dorsal aesthetic lines were pleasing and maintained over a prolonged postoperative follow-up period. There was free natural movement of the lobular part of the nose. No major complications were encountered. Conclusions Consistent, reproducible results were achieved with using the extended L-framework in primary and secondary rhinoplasty and in posttraumatic dorsal nasal deformities as well. This technique has different advantages over the conventional techniques as the extended framework is more anatomical, preserves pliability of the lobule, maintains stability without any means of fixation, and offers good control of aesthetic needs.