Reconstruction of a Severely Damaged Cartilaginous Septum with a Bypass L-Strut Graft using Costal Cartilage

Abstract

Reconstruction of a weakened septal cartilage is a key procedure for the correction of deformed noses. However, when septal mucoperichondrium dissection is technically challenging, reconstruction of the lower two-thirds of the nose should be performed bypassing the damaged septal cartilage and mucosa. This article summarizes our experience with treating patients with severely damaged septal cartilage with bypass L-strut graft using costal cartilage. We retrospectively reviewed 26 patients who underwent rhinoplasty using bypass L-strut graft. Autologous costal cartilage was used for creating L-strut in two different ways: (1) by fashioning the L-shaped graft as one unit using the sixth rib cartilage and (2) by integrating a dorsal strut with a columellar strut using slices of the seventh rib cartilage. The caudal strut is fixated to the anterior nasal spine; the dorsal L-strut is placed on the nasal dorsum with no fixation to the nasal bone. Medical records were assessed for demographic, clinical, and treatment information. One-piece-type L-strut graft was used for 11 patients and integrated-type L-strut graft was used for 15 patients. No statistical differences were found in postoperative aesthetic outcomes between the two groups. The postoperative assessment of surgical outcomes was excellent in 10 patients, good in 10, fair in 6, and poor in none. Functionally, all 26 patients experienced improvements in nasal breathing. Bypass L-strut graft using costal cartilage is a useful surgical maneuver of septal reconstruction in particular nasal deformity when the creation of the septal mucoperichondrial pocket is difficult or better to be avoided.