Computer-assisted anthropometry for outcome assessment of cleft lip

Area of Science:

• Plastic Surgery
• Medical Imaging Analysis
• Quantitative Morphology

Background:

• Clinical assessment of repaired cleft lip and nose morphology is crucial.
• Existing methods may lack objective quantification.
• A need exists for practical, accurate image analysis tools.

Purpose of the Study:

• To develop and validate a computer-assisted anthropometric analysis for evaluating repaired cleft lip and nose.
• To create a quantitative tool for assessing aesthetic outcomes.
• To correlate the severity of congenital deformity with surgical outcomes.

Main Methods:

• Utilized public domain NIH-Image software for image analysis.
• Compared NIH-Image-based measurements with direct physical measurements.
• Developed a structured physical examination form and a scoring system for lip and nasal aesthetics.
• Applied the analysis to digitized images of children before and after cleft lip and nose repair.

Main Results:

• Demonstrated exceptional linear correlation (Pearson R = 0.96) between computer-assisted and direct measurements.
• Achieved high accuracy with average differences as low as 0.025-0.997 mm for measurements within the camera plane.
• Quantified a spectrum of anatomical results, with mean scores indicating good outcomes.
• Found a weak positive correlation (R² = 0.223) between the severity of congenital deformity and surgical outcome.

Conclusions:

• An accurate and practical computer-assisted method for morphologic outcome assessment of repaired cleft lip and nose has been developed.
• The analysis effectively quantifies and grades relevant anatomical features.
• A weak direct correlation exists between the severity of initial deformity and the final surgical outcome.
• Further multi-center testing is recommended.