ABSTRACT
Crushed cartilage is used in rhinoplasties and crushing carry the risk of devitalization. The most infero-posterior part of the septal cartilage has a rough surface compared with the smooth surface of the remaining parts. This cartilage may be more convenient for crushing with lesser pressure requirements, increasing the viability. Twenty-six patients underwent septorhinoplasty and the infero-posterior part of the septal cartilage was harvested. The rough cartilage was utilized in nine patients (excluded from the study). Seventeen patients were included in the study. The mean age of the patients was 28 (19-37y). Two pairs of grafts were utilized for histological study. In fifteen patients crushing experiment was performed. The smooth-surfaced cartilages were the control group, the rough-surfaced cartilages were the study group. For each case, grafts were reduced to the same dimensions and placed over millimetric-paper and photographed. The grafts were crushed simultaneously. The crushed cartilages were also placed on millimetric-paper and photographed. The data were evaluated statistically. The mean surface increment ratio was 2.26 ± 0.28 for the control and 2.94 ± 0.25 for the study group. The difference was statistically significant (p < 0.0048). In two specimen, after applying hematoxylin & eosin stain, the extracellular matrix of the rough cartilage specimen stained darker due to more abundant proteoglycan content. The rough septal cartilage widens more compared with the smooth cartilage under the same crushing pressure. Thus, the rough cartilage requires lesser pressure for widening which may increase the viability. The rough septal cartilage contains more proteoglycan which may explain its softness.
ABSTRACT
OBJECTIVES: This study aims to classify the factors that make rhinoplasty difficult and appropriate reconstruction of it. PATIENTS AND METHODS: We retrospectively evaluated the records of 103 patients who underwent rhinoplasty at our private clinic between April 2002 and December 2014. The most important reagent affecting the degree of difficulty in our study was the adhesion of the bone and cartilaginous structures to the skin and mucosa, as an outcome of on previous operations. Structural deficiencies in various parts of bone and cartilaginous structures, presence of septum deviation at a very advanced level, asymmetries in the lower and upper lateral cartilages, fracture deformities or trauma-related bone compressions, skin quality and thickness and the age of the patient were other criteria that affected the degree of difficulty of rhinoplasty. Taking these compelling factors into consideration, a difficulty coefficient table was set up with a new classification that determines complexity and suggests appropriate reconstructions. RESULTS: The total of difficulty coefficients of rhinoplasties between 1-3 were considered to be less complex, those between 4-6 as intermediate complex and those being >7 as very complex rhinoplasty. CONCLUSION: Calculation of the difficulty coefficient provides objective determination of the degree of difficulty of the operation. Reconstruction plans, probable duration of surgery, preoperative preparations, all grafts and materials considered for use may be predicted according to the difficulty coefficient. The surgeon can test whether his or her experience is sufficient or not according to the difficulty coefficient. Surgical risks can be assessed in the light of the difficulty coefficient and shared with the patient.
