Characterization of Auricular Growth within the Pediatric Population Using Computed Tomography Scan Measurements.

Area of Science:

• Plastic Surgery
• Pediatric Otorhinolaryngology
• Medical Imaging

Background:

• Microtia reconstruction is crucial for childhood socialization.
• Optimal surgical timing is debated, with current recommendations based on general age ranges.
• Individualized auricular growth data is needed for precise surgical planning.

Purpose of the Study:

• To establish a detailed auricular growth curve based on age and sex.
• To enhance the individualized approach to microtia reconstruction.
• To provide a reliable reference for optimal surgical timing.

Main Methods:

• Retrospective analysis of 319 head and neck CT angiography scans from unaffected individuals.
• Measurement of bilateral auricular cartilage height and width using a standardized protocol.
• Calculation of mean values, standard deviations, and width:height ratios for growth analysis.

Main Results:

• Significant differences in cartilage height and width were observed between sexes.
• Maximum auricular height was achieved at age 11 (females) and 12 (males).
• Maximum auricular width was achieved at age 10 (females) and 8 (males), with a consistent width:height ratio of approximately 0.6.

Conclusions:

• An auricular growth map was developed using CT measurements.
• Maximum auricular dimensions are sex-dependent, reached at ages 11-12.
• The width:height ratio remains stable around 0.6 throughout development, informing reconstruction strategies.