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The self-retained Le Fort I osteotomy
I R Munro1, S P Beals, G J Griffin
1Humana Craniofacial Institute, Medical City Dallas, Texas 75230.
Plastic and Reconstructive Surgery
|December 1, 1987
Summary
A modified Le Fort I osteotomy technique reduces relapse rates by allowing bone fragment extrusion and self-retention, potentially eliminating the need for bone grafts in maxillofacial surgery.
Area of Science:
- Oral and Maxillofacial Surgery
- Orthognathic Surgery
- Craniofacial Reconstruction
Background:
- Inferior repositioning of the maxilla via Le Fort I osteotomy is associated with a high rate of relapse.
- Existing techniques often require bone grafts to ensure stability.
Purpose of the Study:
- To evaluate a modified bone cut technique for Le Fort I osteotomy to improve stability and reduce relapse.
- To assess the efficacy of an oblique upward bone cut in facilitating maxillomandibular advancement.
Main Methods:
- A modified Le Fort I osteotomy with an obliquely upward oriented bone cut was performed in 29 patients.
- The technique allows for extrusion of the maxillary segment while maintaining bony contact.
Main Results:
- The modified bone cut facilitated fragment extrusion and ensured good bony contact.
- This technique demonstrated self-retention of the bone fragment, obviating the need for bone grafts.
- Adaptability to movements in any plane was observed.
Conclusions:
- The modified oblique bone cut for Le Fort I osteotomy offers improved stability and reduced relapse.
- This technique simplifies the procedure by eliminating the need for bone grafting and allowing versatile repositioning.