Step Genioplasty Using Trapezoid Osteotomy for Chin Advancement

Area of Science:

• Plastic Surgery
• Facial Aesthetics
• Surgical Innovation

Background:

• The chin significantly influences lower facial aesthetics and harmony.
• A broad or square chin is often considered unaesthetic.
• Advancement and narrowing genioplasty is frequently indicated for East Asian women seeking a more attractive profile.

Purpose of the Study:

• To present and evaluate the outcomes of step genioplasty utilizing trapezoid osteotomy.
• To assess the efficacy of this technique in chin advancement and narrowing.

Main Methods:

• Retrospective review of 145 patients undergoing genioplasty (January 2019 - December 2023).
• Lateral cephalograms were used for pre- and post-operative facial profile assessment.
• Measurements focused on chin advancement, shortening, and bony stability.

Main Results:

• Mean chin advancement of 5.3 mm and shortening of 3.4 mm observed.
• A mean soft-to-hard tissue ratio of 0.90:1 indicates effective profile modification.
• Minimal bony relapse rate of 3.0% and no major complications reported.

Conclusions:

• Trapezoid osteotomy facilitates chin narrowing.
• The bony step provides stabilization, ensuring long-term stability and adequate soft tissue adaptation.
• Step genioplasty with trapezoid osteotomy is a viable surgical option for correcting broad and recessed chins.