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Aims The aim of this study was to translate the MiRa scale into French and validate its use for French-speaking surgeons. Material and methods ISPOR and WHO recommendations were used to carry out the translation process from English to French in five steps. The MiRa scale is a validated analysis scale of nasal dysmorphoses. Few tools are available in French for French-speaking surgeons. ISPOR and WHO recommendations were used to complete the five-step translation process from English into French. To assess the reliability of the MiRa scale–French version, we statistically compared intra-observer repeatability (comparison of scores obtained when one observer assessed each patient twice at a one-month interval) and inter-observer repeatability (comparison of scores obtained when 2 observers assessed the same patient) using the Wilcoxon test and the intraclass correlation coefficient (ICC) (α = 5%). Objectives Our goal was to obtain a translation of the idea or concept rather than a literal translation to enable good intra- and inter-observer repeatability. Results Each step allowed us to make changes gradually working towards a conceptual translation equivalent to the original version. Conclusion The MiRa scale is the only aesthetic analysis scale validated in the literature for nasal dysmorphoses. The combined use of two sets of translation recommendations, with a five-step translation-back-translation process, made it possible to obtain a French version perfectly in line with the original. This version is usable by French-speakers.

The nasal septum presents inter-individual conformational variations. The objectives of this study were to establish a validated protocol for nasal septum analysis using geometric morphometrics (GM) to establish a classification of septal deviations (SD). This was a retrospective study including two groups of patients: patients operated on by septoplasty (SD group) and patients without nasal obstruction (control group). The 3D segmentation model was extracted from CT scans. Thirty landmarks were defined on the nasal septum and validated by MANOVA Procrustes. Using a clusterization process, the septum was classified to reflect its different conformations. Nasal resistances were compared between the two groups. Fifty scans of patients with SD were included. The percentage of variability due to measurement error was 7.9% across all landmarks. We identified two clusters for the SD group. Using GM, conformation of cluster 1 (S-shaped) and cluster 2 (C-shaped) was visualized and identified. There was a statistically significant difference regarding nasal resistance between each cluster in the SD group compared with the control group (p