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Split-Overlapping Genioplasty: Surgical Technique, Morphological and Radiological Long-Term Outcomes
Flore Roul-Yvonnet1, Julien Quilichini, Patrick Leyder
1*Department of Maxillofacial and Plastic Surgery, Robert Ballanger Hospital, Aulnay-sous-bois †Assistance Publique Hôpitaux de Paris (AP-HP), University Hospital Paris Seine Saint Denis-Avicenne Hospital, Paris XIII University, Bobigny, France.
The Journal of Craniofacial Surgery
|October 12, 2017
Summary
This study presents a modified split-overlapping genioplasty technique for chin deformities. The procedure offers stable, satisfactory aesthetic and radiologic outcomes with minimal complications.
Area of Science:
- Plastic Surgery
- Oral and Maxillofacial Surgery
- Aesthetic Surgery
Background:
- Tessier's overlapping bone flap genioplasty addresses major retrognathia and long, retruded chins.
- A modified technique has been employed for 15 years to mitigate drawbacks of the original procedure.
Purpose of the Study:
- To describe a modified split-overlapping genioplasty technique.
- To evaluate the long-term morphologic and radiologic outcomes of this modified procedure.
Main Methods:
- A retrospective analysis of split-overlapping genioplasties performed between 2004 and 2014.
- Radiologic assessment of bone resorption using cephalometric X-rays (preoperative, day 1, and year 1 postoperative).
- Morphologic outcome evaluation using standardized pre- and postoperative photographs on a Likert scale.
Main Results:
- Forty-seven patients were analyzed, with 44 undergoing combined mandibular and/or maxillary osteotomy.
- Average symphysis height reduction was 5 mm, and average pogonion advancement was 4.3 mm.
- Average bone resorption after 1 year was 7%, with no major complications reported. Morphologic outcomes were largely satisfactory.
Conclusions:
- Modified split-overlapping genioplasty is a safe and effective procedure for chin augmentation.
- The technique yields stable, long-lasting aesthetic and radiologic results.
- It is particularly beneficial for correcting significant chin deformities.
