Hanna's Modified Sagittal Split Osteotomy (HSSO): An Alternative to Inverted L Osteotomy-Merging Function and...

Area of Science:

• Oral and Maxillofacial Surgery
• Orthognathic Surgery
• Surgical Innovation

Background:

• Current orthognathic surgery requires solutions balancing function and aesthetics.
• Existing techniques like inverted L osteotomy have limitations in stability and nerve protection.
• There is a need for versatile, minimally invasive surgical approaches.

Purpose of the Study:

• To present the High-Sagittal Split Osteotomy (HSSO) as an optimized orthognathic surgical technique.
• To evaluate the functional and aesthetic outcomes of HSSO.
• To compare HSSO with traditional methods, such as inverted L osteotomy and bilateral sagittal split osteotomy (BSSO).

Main Methods:

• A case series illustrating the application of HSSO.
• HSSO combines advantages of transoral inverted L osteotomy with enhancements for versatility and accessibility.
• Technique allows for significant mandibular rotation without trocars or skin incisions.

Main Results:

• HSSO demonstrated high postoperative stability, especially with concurrent LeFort 1 osteotomy.
• The technique offers improved inferior alveolar nerve safety compared to traditional sagittal split methods.
• HSSO effectively corrects mandibular asymmetries and maintains jawline aesthetics without soft tissue step deformity.

Conclusions:

• HSSO provides predictable, functional, and aesthetically pleasing results in orthognathic surgery.
• It offers a viable alternative to traditional orthognathic techniques.
• The technique enhances stability, nerve protection, and aesthetic outcomes.