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Abstract

Objective

The purpose of this study was to develop a video-imaging mathematical method to assess nostril morphology.

Design

This retrospective study involved two age-matched groups: 28 subjects with complete unilateral cleft lip and palate (CUCLP) and 19 noncleft controls. Nose casts were reproducibly oriented in a jig such that the casts could be rotated about the coronal axis. Video images of the nostrils were captured and then analyzed for area, perimeter, centroid, principal axis, moments about the major and minor axes (I₁₁, I₂₂), anisometry, bulkiness, lateral offset, internostril angle, and rotational angle.

Results

All parameters identified nostril asymmetry in both groups. The results of the analyses using anisometry, I₁₁, and I₂₂ showed that, in both groups, one nostril was rounder and one was more elliptical. This asymmetry, however, differed between the two groups, and the difference was primarily based on the degree of ellipticity of the nostrils. Maximum dimension, perimeter, lateral offset, I₁₁, and I₂₂ were more asymmetric in the cleft group. In the control group, the right nostril was more elliptical and had a greater perimeter, and the leftside nostril had a greater bulkiness (enfolding).

Conclusions

The method developed was validated for assessment of nasal morphology in cleft and noncleft samples. Nostril morphology was asymmetric in both groups but more asymmetric in the cleft group than the control group. The dominant influence of the cleft resulted in more elliptical noncleft nostrils and greater nostril shape asymmetry in the cleft group. The validated video-imaging method can now be used to assess the efficacy of treatment on nasal morphology.

Keywords

cleft nose repair complete unilateral cleft mathematical assessment morphology nasal nostril morphology video-imaging

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Video-Imaging Assessment of Nasal Morphology in Individuals with Complete Unilateral Cleft Lip and Palate

Abstract

Objective

Design

Results

Conclusions

Keywords

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References