Anatomy-based computer-assisted evaluation for aesthetic new navel formation.

Area of Science:

• Plastic Surgery
• Anatomy
• Aesthetics

Background:

• Determining typical umbilical position and shape in young individuals is crucial for accurate repositioning during abdominoplasty.
• Understanding anatomical landmarks aids in achieving natural-looking results post-surgery.

Purpose of the Study:

• To establish the typical position and shape of the umbilicus in young adults.
• To provide anatomical data for guiding the creation of a new umbilicus during abdominoplasty.
• To identify ideal geometric shapes and positions based on mathematical relationships with anatomical structures.

Main Methods:

• Analysis of standardized photographs from 63 young volunteers.
• Evaluation of umbilical parameters: vertical/horizontal position, length, ratio, and shape.
• Establishment of mathematical relationships between the umbilicus and anatomical landmarks (xiphoid, pubic symphysis, iliac spine/crest) and body mass index (BMI).
• Application of derived measurements in two abdominoplasty cases.

Main Results:

• Umbilical shapes categorized: vertical oval with superior hooding (29%), round (27%), vertical lozenge (21%), protruded (11%).
• Measured xiphoid process to umbilicus / umbilicus to pubic symphysis ratio: 1.64 ± 0.40.
• Ideal aesthetic ratio for new umbilicus: 1:1, with a target of 1.6:1.
• Significant correlation found between BMI and all umbilical ratios.

Conclusions:

• The aesthetically optimal navel position aligns with the golden ratio between the xiphoid process and umbilicus relative to the umbilicus and abdominal crease.
• Maintaining a healthy body mass index is essential for achieving optimal abdominal aesthetics.
• The study provides a quantitative basis for umbilical repositioning in abdominoplasty.